Two red-sailed boats move beneath storm clouds, while small boats remain on the mudflats ahead, still unreached by the water.
2026.08.13 Sung Oh Daily Report

Two Boats Afloat

Today in One Line The Index Rose Like the Tide
533 Left in the Mudflats
A rising tidelifts all boats
Scroll down to view report ↓
Sung Oh⁠· KOSPI Daily Report Aug. 13, 2026 (Thu) · Market Close
2026.08.13 ⁠· DAILY MARKET REPORT ⁠· Summary Foreign buying for a third straight session ⁠· Samsung Electronics · SK Hynix +KRW2.60tn

Index +3.56%; advancers 37.0%

Foreign Cash+KRW2.1067tn
Samsung Electro-Mechanics+12.58%
Market Breadth334↑ · 533↓
KOSPI
6,813.34
▲3.56%
KOSDAQ
861.37
▲0.29%
Prior close 6,579.04 (gap-up open) Open 6,773.92 High 6,895.63 Low 6,748.13 Close 6,813.34 09:00 11:00 14:00 15:30
Market Context Indicators Aug. 12 U.S. close ⁠· Aug. 13 Korea close
SOX Philadelphia Semiconductor Index (SOX) · key gauge of global semiconductor stocks
12,399.38
▲2.49%
Nasdaq
26,588.49
▲0.54%
US 10Y
4.682%
▼0.2bp
USD/KRW Korea FX daytime session 09:00–15:30 close · prior KRW1,415.7 · won weakened
1,419.4
▲3.7
Samsung Electronics No. 1 by market cap · No. 1 foreign net buy · No. 1 institutional net sell
268,000
▲4.89%
SK Hynix No. 2 by market cap · No. 2 foreign net buy · No. 1 institutional net buy
1,593,000
▲5.92%
Intraday Flow
01
Pre-market · Open
· Aug. 12 U.S. market · U.S. July CPI Consumer Price Index · monthly inflation measure from the U.S. Bureau of Labor Statistics In line with expectations · rate pressure eased Nasdaq +0.54% · SOX Philadelphia Semiconductor Index (SOX) · key gauge of global semiconductor stocks +2.49% · U.S. 10-Year Treasury 4.682% · After the U.S. close · Cisco Leading U.S. networking-equipment stock · AI data-center connectivity gear · gauge of AI-infrastructure spending Earnings · revenue ·EPS Earnings per share · net income ÷ shares outstanding · adjusted EPS excludes one-off items·Guidance Management's own outlook for the next quarter and full year Beat on all threeAfter-hours decline despite the beat -4% range · non-GAAP gross margin 66.3% · 68.4% a year earlier · higher expectations and cost pressure · Korea open · KOSPI 6,773.92(+2.96%) · KOSDAQ 863.15(+0.49%)
02
Morning
· KOSPI intraday high around 20 minutes after the open 6,895.63(+4.81%) · then traded in a 6,830–6,875 range · KOSDAQ low just after the open 853.09(-0.68%) · quickly recovered · Samsung Electro-Mechanics intraday +14% range · remained No. 5 by market cap
03
Afternoon · Close
· Fell after 13:00 · intraday low around 15:00 6,748.13(+2.57%) · held above the previous close · Rebounded just before the close · KOSPI 6,813.34(+3.56%) · KOSPI200 1,071.24(+4.06%) · KOSDAQ high 870.96 after 861.37(+0.29%) · moved above the Aug. 12 high of 860.76
Other Key Indicators
Dow
53,770.27
▼0.04%
S&P500
7,748.50
▲0.26%
VIX S&P 500 options-implied volatility · fear gauge · live as of Aug. 13, 17:30 KST
14.68
▲0.89%
Dollar Index Dollar value against six major currencies · live as of Aug. 13, 17:30 KST
99.987
▼0.02%
Gold 24-hour traded asset · live as of Aug. 13, 17:30 KST · timing differs from official close
4,426.00
▲0.39%
Bitcoin 24-hour traded asset · live as of Aug. 13, 17:30 KST
63,716
▲0.50%
JPY/KRW (per ¥100)Korea FX 15:30 market average rate · prior KRW888.64
890.47
▲1.83
WTI Crude Live as of Aug. 13, 17:30 KST · Aug. 12 official close $83.27
82.16
▼1.33%
KOSPI200
1,071.24
▲4.06%
LME Copper LME Cash · London market basis · reference date Aug. 12
14,376.00
▼0.34%
LME Aluminum LME Cash · London market basis · reference date Aug. 12
3,307.50
▼1.94%
Check vs. Prior Call ⁠· 8.12 → 8.13
DirectionUpside 55 ⁠· Downside 45 Close +3.56% Closed higher ⁠· Hit
Condition CheckFour of five upside supports remained intact · Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move turned to selling after one day · three of five downside conditions materialized (breadth narrowed further · futures selling extended · KOSDAQ joint selling)
Conditions MetForeign buying extended ⁠· Institutional buying for a fifth straight session ⁠· Semiconductors & Semiconductor Equipment extended gains ⁠· Turnover: 112% → 147% of the 5-day average ⁠· KOSDAQ moved above 860.76
Conditions MissedExpected advancer ratio to recover to 50% → below half for a second day · expected cash and futures to realign → Foreign futures KOSPI200 futures net-buy amount · KRX derivatives data · value basis -KRW129.0bn · second straight day of selling · Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move Expected buying to extend → turned to -KRW64.4bn selling
Price CheckpointsHeld 6,550.94 · retest of 6,668.43 → gap-up cleared both · new high 6,895.63 · KOSPI 200 moved above the 1,050 psychological level
Result

Of the three paths, the price direction of “buying extends” materialized · recovery in advancer dominance failed · direction call right for a second straight day · breadth call missed for a second straight day

Market Commentary

01
Inflation matched expectations All four items Consensus The average of brokerage estimates In line Night of Aug. 12 · U.S. July CPI Consumer Price Index · monthly inflation measure from the U.S. Bureau of Labor Statistics
U.S. July inflation ⁠· Consensus vs. Actual
ItemConsensus The average of brokerage estimatesActual
Headline m/m (%)+0.1+0.1
Headline y/y (%)3.43.4
Core m/m (%)+0.2+0.2
Core y/y (%)2.52.5
vs. June · headline 3.5% → 3.4% · core 2.6% → 2.5%
Energy -1.5% · Shelter +0.1% accounted for two-thirds of the increase
September FOMC Federal Open Market Committee · policy-rate meeting Rate-hike probability · CME Probability implied by CME rate futures · figures vary by data provider 46% → 42% on the same basis
SOX Philadelphia Semiconductor Index (SOX) · key gauge of global semiconductor stocks +2.49% vs. Nasdaq +0.54% · Dow -0.04%
NVIDIA +3.03% · Micron +4.92% · SK Hynix ADR Depositary receipts of foreign companies listed in the U.S. · local-market trading price +9.01%
Cisco Leading U.S. networking-equipment stock · AI data-center connectivity gear · gauge of AI-infrastructure spending FY26 Q4 · revenue $17.25bn · adjusted EPS Earnings per share · net income ÷ shares outstanding · adjusted EPS excludes one-off items $1.22 · revenue · earnings ·Guidance Management's own outlook for the next quarter and full year Beat on all three
Cisco · after-hours decline despite the beat -4% range · non-GAAP gross margin 66.3% · 68.4% a year earlier · company cited higher component costs including memory
Memory prices · a cost for Cisco · revenue for Samsung Electronics and SK Hynix · two sides of the same item
Inflation landed within expectations · relative strength concentrated in semiconductors and AI infrastructure
02
Where foreign and institutional flows diverged Opposite directions in three of the top five By stock · KRX data · KRW100mn units
Top Five Foreign Net Buys ⁠· Institutional flow in the same stock
StockForeignInstitutions
Samsung Electronics+15,489-3,100
SK Hynix+10,551+2,578
Samsung Electro-Mechanics+1,537+325
HD Hyundai Heavy Industries+826-866
KB Financial+538-523
KOSPI total flow · Foreign +KRW2.1067tn · Institutions +KRW682.2bn · Retail -KRW2.7363tn
Foreign buying for a third straight session · institutional buying for a fifth · retail selling for a third
Foreign · Samsung Electronics +KRW1.5489tn and SK Hynix +KRW1.0551tn into the two stocks +KRW2.6039tnKRX stock-level investor data
Same KRX data · sum of net-buy stocks +KRW4.5353tn · of which, outside the two stocks +KRW1.9314tn · sum of net-sell stocks -KRW930.9bnBuying still dominated even excluding the two names · concentration is a matter of intensity · do not combine totals from different series
SK Hynix ranked No. 1 in institutional net buying +KRW257.8bn · Samsung Electronics ranked No. 1 in institutional net selling -KRW310bn
Previous session · foreign and institutional top-five net buys were identical across all five names
Only SK Hynix and Samsung Electro-Mechanics were bought by both
03
Two-day surge · breadth narrowed further KOSDAQ fell to the KOSPI level vs. Previous Session
Share of Stocks Advancing ⁠· One-Day Change
Item08.1208.13
KOSPI Advancer Ratio41.9%37.0%
KOSDAQ Advancer Ratio51.7%37.1%
Advancing Sectors (of 79)3543
Advancing Themes (of 219)11995
KOSPI: 333 advancers + 1 limit-up vs. 533 decliners · advancers below half for a second day
KOSDAQ: 634 advancers + 9 limit-up vs. 1,009 decliners · 51.7% → 37.1% in one day
KOSPI200 +4.06% · KOSPI +3.56% above · heavier side dominated for a second straight day
Two-day cumulative · KOSPI +7.37% vs. KOSDAQ +0.41%
Number of gaining sectors rose by 8 · number of gaining themes fell by 24 · directions diverged
Index rose for a second straight day · advancer ratio fell for a second straight day
What the Close Means
Today's Low 6,748.13 · 79.70 points above the prior-session high of 6,668.43 Not a brief gap above the level: the entire regular session stayed above the prior high
KOSPI200 +4.06% · 0.50%p above KOSPI · large-cap leadership continued
Price acceptance strengthened · advancer ratio fell from 41.9% to 37.0%
Market closed Aug. 17 · only Aug. 14 remains in this week's Korea trading calendar

Sector Leaders & Laggards

Gaining Sectors
Electronic Equipment & Instruments+9.28%
Venture Capital+5.91%
Semiconductors & Semiconductor Equipment+5.15%
Interactive Media & Services+3.73%
Declining Sectors
Internet & Catalog Retail-8.17%
Electric Utilities-4.88%
Stationery-4.29%
Broadcasting & Entertainment-3.20%
79 sectors · 43 up · 0 flat · 36 down · up sectors increased by 8 from 35 the prior day
Stationery -4.29% · one-stock sector Sector-index return equals the single stock’s return · rank shown as is
Venture Capital +5.91% · previous session -0.97% rebounded · 42 up and 21 down among 90 stocks
Sector Read
01
inside Electronic Equipment & Instruments +9.28%
The sector leader and the stock inside it ⁠· Sector · Theme · Stock classification shown explicitly
NameCategoryChange
Samsung Electro-MechanicsStock+12.58%
Electronic Equipment & InstrumentsSector+9.28%
MLCC MLCC · a component that smooths current flow · used more heavily in AI serversTheme+2.98%
Semiconductor SubstratesTheme+2.61%
Electronic Equipment & Instruments · prior day +5.07% → today +9.28% · No. 1 among 79 sectors
54 up · 7 flat · 45 down among 106 stocks · breadth advantage was shallow
Samsung Electro-Mechanics close KRW1,503,000 · market cap KRW112.3tn · No. 5
Catalyst · Morgan Stanley replaced Samsung Electronics with Samsung Electro-Mechanics as its top pick among Korean tech stocks · target price KRW2.56mn → KRW2.62mn
Rationale · high-capacitance MLCCs for AI servers MLCC MLCC · a component that smooths current flow · used more heavily in AI servers price strength · ABF substrate High-end printed circuit board connecting semiconductor chips to substrates · AI chips require larger area and higher complexity demand improvement
Market-cap weighted Sector indexes weight stocks in proportion to market cap · larger stocks exert more influence Effect · Aug. 10 Semiconductors · Aug. 11 Aerospace & Defense · Aug. 12 Electronic Products · Aug. 13 Electronic Equipment & Instruments
The No. 1 sector changed for a third straight day · each time one heavyweight stock set the direction

Check sector-index direction separately from stock count · a pattern repeated recently

02
Semiconductors · gain held · number of advancers shrank
Bellwethers vs. Suppliers ⁠· Sector/theme classification shown explicitly
NameCategoryChange
Leading Semiconductor Stocks (Production)Theme+5.22%
Semiconductors & Semiconductor EquipmentSector+5.15%
S7 A thematic basket grouping seven large-cap semiconductor stocks, including Samsung Electronics and SK Hynix(Large-Cap Semiconductors)Theme+4.55%
HBM High Bandwidth Memory · stacked architecture widens data pathways · used in AI serversTheme+1.60%
Semiconductor EquipmentTheme+1.33%
Semiconductor Materials/ComponentsTheme-0.48%
Semiconductors & Semiconductor Equipment · previous session +5.98% → today +5.15% · third straight day higher
87 up · 9 flat · 75 down among 171 stocks · advancers fell by 42 from 129 the prior day
Large-Cap Theme +5.22% · +4.55% vs. Materials, Parts & Equipment Materials, Parts & Equipment · suppliers of materials and equipment to major semiconductor producers series +1.33% · -0.48%
Short Selling Sell borrowed shares → bet on a decline · turnover basis No. 1 turnover Samsung Electronics KRW773.4bn (6.3% share) · No. 2 SK Hynix KRW321.8bn (3.2%)
Sector index held a 5%-plus gain · advancers fell 129 → 87

Breadth narrowed while strength remained in large caps · divergence widened from the prior day

03
Sectors that swapped places
One day after the prior session's leaders and laggards ⁠· All sector-weighted values
Sector08.1208.13
Internet & Catalog Retail+11.06%-8.17%
Consumer Electronics+12.40%+0.70%
Electric Utilities+0.51%-4.88%
Pharmaceuticals-3.17%+0.41%
Internet & Catalog Retail · prior day +11.06% after -8.17% gave back gains · 1 up and 5 down among 6 stocks · last among 79 sectors
Electronic Products · fell from No. 1 the prior day to No. 30 today · 9 up and 5 down among 16 stocks
Electric Utilities · Korea Electric Power target-price cut report · KRW53,000 → KRW48,000 · Q2 operating profit missed market expectations
Korea Electric Power · No. 1 retail net buy +KRW143.7bn · Institutions -KRW96.5bn · Foreign -KRW48.9bn
Pharmaceuticals · 47 up and 105 down among 175 stocks · index direction and stock count moved opposite ways
The prior day's two leaders gave back gains · laggard Pharmaceuticals recovered only slightly at the index level

Sector rankings reversed day by day · third straight day

What to Watch Next Session

Next-Session Probability ⁠· Upside bias based on domestic closing signals
Upside 55%
Downside 45%
55:45 · not a quantitative forecast probability · relative weight of conditions confirmed at the 15:30 close
Upside Foreign cash +KRW2.1067tn · third straight day of buyingInstitutional cash +KRW682.2bn · fifth straight day of buyingTurnover KRW34.45tn · 147% of the 5-day averageSemiconductors & Semiconductor Equipment +5.15% · third straight day higherU.S. July CPI Consumer Price Index · monthly inflation measure from the U.S. Bureau of Labor Statistics In line with expectations · September rate-hike probability 46% → 42%
Downside Advancer ratio stayed below half · narrowed further from 41.9%Foreign futures KOSPI200 futures net-buy amount · KRX derivatives data · value basis -KRW129.0bn · selling extended · direction diverged from cashKOSDAQ advancer ratio 51.7% → 37.1% · foreign and institutions both sold for a third straight dayProgram Trading Automated multi-stock orders · a channel through which indexes and investor flows move -KRW64.4bn · turned to selling after one dayForeign net buying KRW2.8357tn → KRW2.1067tn · buying continued but amount declined
Variables Excluded from the Probability U.S. July PPI tonight, Aug. 13 · result not yet knownApplied Materials earnings early Aug. 14 · result not yet knownAug. 17 market holiday · schedule factor with no predetermined direction
Key Flow SignalsAt the Close
Foreign Cash+KRW2.1067tnThird straight day of buying
Foreign futures-KRW129bnSecond straight session of selling
Samsung Electronics+KRW1.5489tnNo. 1 foreign net buy · No. 1 institutional net sell
SK Hynix+KRW1.0551tnNo. 2 foreign net buy · No. 1 institutional net buy
KOSPI Breadth37.0%Prior day 41.9%
KOSDAQ Breadth37.1%Prior day 51.7%
Next Confirmation Conditions
FlowsWhether foreign cash buying extends to a fourth day · whether futures selling extends to a third · cash and futures realign to buying → upside · cash buying shrinks + futures selling extends → pullback
BreadthWhether breadth recovers to 40% ⁠· Whether semiconductor advancers hold at 87 or re-expand ⁠· Whether KOSDAQ moves above 870.96 If the index rises without a recovery in breadth, reduce the upside weight
Price · VariablesWhether KOSPI holds above 6,748.13 on a closing basis · whether 6,895.63 is retested · U.S. July tonight PPI Inflation based on producer selling prices · released the day after CPI · early Aug. 14 Applied Materials Leading U.S. semiconductor-equipment stock · major customers include Samsung Electronics, SK Hynix and TSMC · leading read on semiconductor capex earnings · position unwinding ahead of the Aug. 17 holiday
Flows · Breadth Detail
Flow StructureKOSPI ⁠· Naver Finance investor-flow data
Retail-KRW2.7363tn
Foreign+KRW2.1067tn
Institutions+KRW682.2bn

Data basis · investor-level totals = Naver Finance · stock-level = KRX · market scopes differ → no cross-aggregation or share calculations

Foreign · second straight session above KRW2tn · amount declined from +KRW2.8357tn the prior day
Institutional buying for a fifth straight session · increased from +KRW527.7bn the prior day · retail selling extended
KOSDAQ · Retail +KRW255bn · Foreign -KRW136.2bn · Institutions -KRW113.8bn
Cash buying and futures selling · same combination for a second straight day
Amount fell but direction held · read together with KRW34.45tn turnover
Foreign futures KOSPI200 futures net-buy amount · KRX derivatives data · value basis-KRW129bn
Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move(KOSPI)-KRW64.4bn
USD/KRW Domestic FX daytime-session close (09:00–15:30)1,419.4 ▲3.7
Market Breadth Share of advancing stocks · gauge of how broadly gains and losses are distributed
KOSPI 334 / 902 = 37.0% 333 advancers ⁠·1 limit-up ⁠·35 unchanged ⁠·533 decliners ⁠· Limit-down 0
KOSDAQ 643 / 1,734 = 37.1% 634 advancers ⁠·9 limit-up ⁠·81 unchanged ⁠·1,009 decliners ⁠· Limit-down 1
vs. prior day · narrowed further in both markets
KOSDAQ decliners 1,009 · 1.6× the 634 advancers
Advancer ratios in both markets converged near 37%
KOSPI narrowed for a second straight day · KOSDAQ fell 14.6%p in one day
Turnover KRX data
MarketTurnovervs. 5-Day Average
KOSPIKRW34.45tn147%
KOSDAQKRW7.53tn118%
KOSPI turnover · 112% → 147% of the 5-day average · absolute amount KRW26.21tn → KRW34.45tn
KOSDAQ turnover · 103% → 118% of the 5-day average
Short Selling Sell borrowed shares → bet on a decline · turnover basis · KOSPI KRW2.08tn · 4.6% of combined KRX+NXT turnover · prior KRW1.56tn and 4.1%
Short Selling Sell borrowed shares → bet on a decline · turnover basis · KOSDAQ KRW0.35tn · 3.8% on the same basis · prior 4.5%
Short-selling share · KOSPI 4.1% → 4.6% higher · KOSDAQ 4.5% → 3.8% lower · directions diverged across the two markets
No. 1 by stock-level share Korea Aerospace Industries 33.3% · short selling KRW54.7bn / turnover KRW164.4bn · close KRW151,200 +4.9%Selling bets concentrated in a rising stock · Aerospace & Defense sector +3.30%
Turnover KRW26.21tn → KRW34.45tn · increased by KRW8.24tn · opposite direction from the number of advancers
Flows Over the Last 5 Sessions
Flows Over the Last 5 Sessions KOSPI ⁠· Naver Finance investor-flow data
08.13Retail-KRW2.74tnForeign+KRW2.11tnInstitutions+KRW0.68tn

Foreign · buying extended · concentrated in Samsung Electronics and SK Hynix · institutional buying for a fifth day · Samsung Electronics was institutions' No. 1 net sell

08.12Retail−KRW3.19tnForeign+KRW2.84tnInstitutions+KRW0.53tn

Foreign · second straight session of buying · amount enters the KRW2tn range · concentrated in five large-cap IT names · institutions bought for a fourth session · retail selling continued

08.11Retail−KRW0.07tnForeign+KRW0.04tnInstitutions+KRW0.03tn

Foreign · turned to buying after three straight selling sessions · all three investor groups below KRW100bn · institutions bought for a third session · retail turned to selling

08.10Retail+KRW0.90tnForeign−KRW1.49tnInstitutions+KRW0.57tn

Foreign · third straight session of selling · amount again exceeded KRW1tn · concentrated in three large IT names · institutional buying extended

08.07Retail+KRW0.27tnForeign−KRW0.86tnInstitutions+KRW0.58tn

Foreign · selling extended · amount 26% of prior session · institutions turned to buying for first time in five sessions

5-session cumulative (Aug. 7–13) · Retail -KRW4.83tn · Foreign +KRW2.63tn · Institutions +KRW2.39tn
Foreign · Aug. 6 -KRW3.33tn drops out + Aug. 13 +KRW2.11tn enters → cumulative -KRW2.80tn → +KRW2.63tn · sign flipped
KOSDAQ five-session cumulative · Foreign -KRW805bn · Institutions +KRW104bn · Retail +KRW672bn
KOSPI200 futures five-session cumulative · Foreign +KRW1.58tn · Institutions -KRW1.42tn · Retail -KRW147bn
Futures ·Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move
Foreign futures KOSPI200 futures net-buy amount · KRX derivatives data · value basis
-KRW129bn
Amount narrowed from -KRW279.0bn the prior day · opposite direction from cash · KRX derivatives value basis
Institutional Futures
+KRW62bn
Turned to buying from -KRW144.0bn the prior day · Retail +KRW77.0bn
Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move(KOSPI)
-KRW64.4bn
Arbitrage +KRW5.2bn · non-arbitrage -KRW69.6bn · turned to selling after one day
Cash–Futures Closing Gap
+2.46
Cash 1,071.24 · futures 1,073.70 · Sep. 2026 contract · closes differ at 15:30 / 15:45 · same-time futures level unavailable → excluded from directional evidence
Cash buying · futures selling · same combination for a second straight day
Non-arbitrage -KRW69.6bn · Arbitrage +KRW5.2bn · index-tracking selling Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move turned the total back to net selling
Institutional futures · direction diverged from foreign flows · prior day moved in the same direction
Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move · Already included in investor-level flows → no separate addition
Net Buying · Net Selling by Investor
Foreign
Net Buying
  1. Samsung Electronics+KRW1.5489tn
  2. SK Hynix+KRW1.0551tn
  3. Samsung Electro-Mechanics+KRW153.7bn
  4. HD Hyundai Heavy Industries+KRW82.6bn
  5. KB Financial+KRW53.8bn
Net Selling
  1. Samsung Electronics Preferred-KRW99.4bn
  2. KEPCO-KRW48.9bn
  3. JYP Ent.-KRW35.2bn
  4. SK Telecom-KRW31.3bn
  5. LG Innotek−KRW27.1bn
Institutions
Net Buying
  1. SK Hynix+KRW257.8bn
  2. NAVER+KRW62.9bn
  3. SK Square+KRW53.2bn
  4. SK Telecom+KRW37.4bn
  5. Samsung Electro-Mechanics+KRW32.5bn
Net Selling
  1. Samsung Electronics-KRW310bn
  2. KEPCO-KRW96.5bn
  3. HD Hyundai Heavy Industries-KRW86.6bn
  4. Doosan Enerbility-KRW58.2bn
  5. HD Korea Shipbuilding & Offshore Engineering-KRW53.9bn
Retail
Net Buying
  1. KEPCO+KRW143.7bn
  2. Samsung Electronics Preferred+KRW100.6bn
  3. JYP Ent.+KRW52.7bn
  4. d'Alba Global+KRW41.3bn
  5. Silicon2+KRW38.1bn
Net Selling
  1. SK Hynix-KRW1.2729tn
  2. Samsung Electronics-KRW1.2264tn
  3. Samsung Electro-Mechanics-KRW183.9bn
  4. NAVER-KRW96.7bn
  5. SK Square-KRW78bn
Top-five foreign and institutional net buys · only SK Hynix and Samsung Electro-Mechanics overlapped · all five matched the prior day
Samsung Electronics · Foreign +KRW1.5489tn / Institutions -KRW310bn · Investor directions diverged
Korea Electric Power · No. 1 retail net buy / No. 2 institutional net sell · No. 2 foreign net sell
NAVER · Institutions +KRW62.9bn / Retail -KRW96.7bn · Foreign +KRW45.5bn
Top-five retail net buys · all outside large-cap semiconductors · mix of utilities, entertainment and cosmetics
What Comes Next
Buying ExtendsCash buying extends to a fourth day + futures selling narrows + tonight's PPI Inflation based on producer selling prices · released the day after CPI comes in line with expectations → retest today's high · confirmation point is whether advancer ratio recovers alongside
BreadthApplied Materials Leading U.S. semiconductor-equipment stock · major customers include Samsung Electronics, SK Hynix and TSMC · leading read on semiconductor capex earnings beat + foreign buying holds → broadening from large-cap semiconductors into equipment, substrates and materials/parts/equipment · check whether advancer ratio recovers to 40%
ReboundPPI Inflation based on producer selling prices · released the day after CPI comes in above expectations + U.S. 10Y yield and dollar rise + USD/KRW rises further + position unwinding ahead of the holiday → check whether today's low holds as support
Upcoming Calendar6 Events
Aug. 13 (Thu)
21:30
U.S. July PPI Inflation based on producer selling prices · released the day after CPI
First external variable tonight · Consensus The average of brokerage estimates +0.2% m/m
Aug. 14 (Fri)
Early morning
Applied Materials Leading U.S. semiconductor-equipment stock · major customers include Samsung Electronics, SK Hynix and TSMC · leading read on semiconductor capex Earnings Release
Released after the Aug. 13 U.S. close · 05:30 KST earnings call · check capex direction
Aug. 14 (Fri)
21:30
U.S. July Retail Sales
Test whether labor weakness is spilling into consumption
Aug. 14 (Fri)
23:00
University of Michigan Consumer Sentiment
Inflation expectations · consumer sentiment checked together
Aug. 17 (Mon)
Liberation Day substitute holiday · Korean equity market closed
This week's Korea market trades through Aug. 14 · next open is Tuesday, Aug. 18
Aug. 19 (Wed)
8/20 03:00
U.S. July FOMC Federal Open Market Committee · policy-rate meeting Minutes
Hold decision with three dissenting votes for a hike · check degree of division
Data · Earnings Benchmarks
Released overnight ⁠· Consensus vs. Actual
ItemConsensus The average of brokerage estimatesActual
U.S. July CPI Consumer Price Index · monthly inflation measure from the U.S. Bureau of Labor Statistics MoM (%)+0.1+0.1
CPI YoY (%)3.43.4
Core CPI MoM (%)+0.2+0.2
Core CPI YoY (%)2.52.5
Cisco Leading U.S. networking-equipment stock · AI data-center connectivity gear · gauge of AI-infrastructure spending FY26 Q4 revenue ($bn)16.8517.25
Cisco Adjusted EPS Earnings per share · net income ÷ shares outstanding · adjusted EPS excludes one-off items ($)1.171.22
Cisco FY27 Q1 revenue Guidance Management's own outlook for the next quarter and full year ($bn)16.818.0–18.2
June CPI Consumer Price Index · monthly inflation measure from the U.S. Bureau of Labor Statistics Actual · MoM -0.4% · YoY 3.5% · core MoM flat · YoY 2.6%
Cisco · product revenue $13.459bn · total product orders y/y +35% · Q4 AI infrastructure orders $4bn
Cisco FY27 full year Guidance Management's own outlook for the next quarter and full year · revenue $72.2–73.4bn · adjusted EPS Earnings per share · net income ÷ shares outstanding · adjusted EPS excludes one-off items $5.05–5.11
Cisco after hours · rose immediately after release, then reversed lower during the earnings call · -4% vs. close Non-GAAP gross margin 66.3% · 68.4% a year earlier · earnings beat and share-price direction diverged
Sequential checks begin tonight ⁠· Release times in Korea Standard Time
NameReleaseConsensus The average of brokerage estimates
U.S. July PPI Inflation based on producer selling prices · released the day after CPI MoM (%)Night of Aug. 13+0.2
PPI y/y (%)Night of Aug. 13about 4.9
Applied Materials Leading U.S. semiconductor-equipment stock · major customers include Samsung Electronics, SK Hynix and TSMC · leading read on semiconductor capex Revenue ($bn)Early morning, Aug. 14Approx. 9.0
Applied Materials adjusted EPS Earnings per share · net income ÷ shares outstanding · adjusted EPS excludes one-off items ($)Early morning, Aug. 14about 3.4
U.S. July Retail Sales MoM (%)Night of Aug. 14+0.3
June PPI Inflation based on producer selling prices · released the day after CPI Actual · MoM -0.3% · 5.5% a year earlier
Applied Materials company Guidance Management's own outlook for the next quarter and full year · revenue $8.95bn ±$0.5bn · adjusted EPS Earnings per share · net income ÷ shares outstanding · adjusted EPS excludes one-off items $3.36 ±$0.20
Prior-quarter results · revenue $7.91bn · adjusted EPS $2.86 · both beat consensus
Post-close variables · as of Aug. 13, 17:30 KST · not official closing prices
WTI $82.16 (-1.33%) · Gold $4,426.00 (+0.39%) · Live quote
WTI · Aug. 12 official close $83.27 · moved below the $83 range
Drivers of the oil decline · U.S. weekly crude inventories +17.42mn barrels · market had expected a draw · OPEC and IEA both cut 2026 demand forecasts
USD/KRW daytime-session close KRW1,419.4 · prior KRW1,415.7 · +KRW3.7 · won weakened
Lower oil reduces inflation pressure · higher USD/KRW works against foreign buying
This Week in Review · Aug. 10–13
Aug. 13 (Thu)KOSPI+3.56%KOSDAQ+0.29%Foreign+KRW2.11tn

Foreign buying extended · concentrated in Samsung Electronics and SK Hynix · Samsung Electro-Mechanics +12.58% drove the No. 1 sector · advancer ratio narrowed further

Aug. 12 (Wed)KOSPI+3.68%KOSDAQ+0.12%Foreign+KRW2.84tn

Foreign buying concentrated in five large-cap IT names · buy-sidecar at 11:57 · despite the index surge, advancers lost their majority

Aug. 11 (Tue)KOSPI+0.73%KOSDAQ+0.39%Foreign+KRW44.0bn

Foreign investors resumed buying Samsung Electronics · No. 1 market-cap stock returned to the front · SK Hynix near flat · prior-session growth-stock surge faded

Aug. 10 (Mon)KOSPI+0.65%KOSDAQ+6.97%Foreign−KRW1.49tn

Rate pressure eased after U.S. employment declined · KOSDAQ rose more than 6% within 50 minutes of the open · growth stocks rallied together · mega-cap semiconductors rested

Week-to-date cumulative (vs. Aug. 7 close) · KOSPI +8.86% · KOSDAQ +7.83%
Foreign KOSPI cash · Mon -KRW1.49tn → Tue +KRW44.0bn → Wed +KRW2.84tn → Thu +KRW2.11tn
Advancer ratio · Tue 62.0% → Wed 41.9% → Thu 37.0% · narrowed for a third straight session
No. 1 sector · Tue Aerospace & Defense → Wed Electronic Products → Thu Electronic Equipment & Instruments
Technical Levels ⁠· Three Indices
KOSPICurrent 6,813.34
Current
6,5506,6686,895
Support6,748.13 → 6,668.43 → 6,550.94 Today's Low ⁠· Aug. 12 high ⁠· Aug. 6 High
Resistance6,895.63 Today's High

Prior resistance at 6,668.43 turned into support · today's low is first support · next resistance is today's high

KOSPI200Current 1,071.24
Current
1,0131,0501,100
Support1,050 → 1,029.43 → 1,013.07 Psychological Level ⁠· Aug. 12 close ⁠· Aug. 3 High
Resistance1,100 Psychological Level

Moved above the 1,050 psychological level · resistance turned into support · large-cap leadership extended · closing basis

KOSDAQCurrent 861.37
Current
814853875
Support853.09 → 839.86 → 814.80 Today's Low ⁠· Aug. 12 low ⁠· Aug. 7 High
Resistance870.96 → 875.16 Today's High ⁠· Aug. 11 High

Moved above prior high 860.76 · reached 870.96 before giving back gains · 875.16 remains resistance

One-Line Glossary
Limit Up ⁠· Limit Down
Daily price limit ±30% · Aug. 13 KOSPI 1 limit-up · KOSDAQ 9 limit-up · 1 limit-down
CPI ⁠· PPI
CPI = consumer inflation · PPI = producer inflation · released monthly by the U.S. Bureau of Labor Statistics · July data due Aug. 12 and Aug. 13
FOMC
U.S. Federal Open Market Committee · policy-rate setting meeting · July meeting held rates, with three dissents favoring a hike
SOX
Philadelphia Semiconductor Index (SOX) · key gauge of global semiconductor stocks
ADR
Depositary receipts of foreign companies listed in the U.S. · local-market trading price
MLCC
MLCC · a component that smooths current flow · used more heavily in AI servers
ABF substrate
High-end printed circuit board connecting semiconductor chips to substrates · AI chips require larger area and higher complexity
HBM
High Bandwidth Memory · stacked architecture widens data pathways · used in AI servers
S7
A thematic basket grouping seven large-cap semiconductor stocks, including Samsung Electronics and SK Hynix
Materials, Parts & Equipment
Materials, Parts & Equipment · suppliers of materials and equipment to major semiconductor producers
EPS
Earnings per share · net income ÷ shares outstanding · adjusted EPS excludes one-off items
Consensus ⁠· Guidance
Consensus = average of brokerage forecasts · guidance = company-provided outlook
Short Selling
Selling borrowed shares → bearish positioning · Aug. 13 KOSPI KRW2.08tn · 4.6% of KRX+NXT turnover
Program Trading
Automated multi-stock orders · a channel for index and flow moves · already included in investor-level flow data
Arbitrage ⁠· Non-arbitrage
Arbitrage = exploits cash-futures price differences · non-arbitrage = other program trading such as index tracking
Cash–Futures Closing Gap
Cash closes 15:30 / futures 15:45 → not a same-time basis · excluded from directional signals
Onshore Daytime Close
Final traded USD/KRW rate in domestic FX market, 09:00–15:30
Base Exchange Rate
Published volume-weighted average of interbank exchange rates · used for JPY/KRW
Sector ⁠· Theme Performance
Sector = market-cap weighted · theme = simple average of constituents · when values conflict, sector value is the reference
Market-cap weighted
Sector indexes weight stocks in proportion to market cap · larger stocks exert more influence
Market Breadth
Share of advancing stocks · gauge of how broadly gains and losses are distributed
Sources & Data Notes
  1. Korea Exchange (KRX) · Naver Finance KOSPI 6,813.34 (+3.56%, Aug. 13 official close) O 6,773.92 · H 6,895.63 · L 6,748.13 / KOSDAQ 861.37 (+0.29%) O 863.15 · H 870.96 · L 853.09 / KOSPI 200 1,071.24 (+4.06%, closing basis) / breadth: KOSPI 333 advancers · 1 limit-up · 35 unchanged · 533 decliners · 0 limit-down; KOSDAQ 634 advancers · 9 limit-up · 81 unchanged · 1,009 decliners · 1 limit-down / turnover KOSPI KRW34.45tn · KOSDAQ KRW7.53tn: dashboard (Naver Finance daily index data · KRX source, collected Aug. 13, 17:34 KST)⁠· Close and percentage change are Etoday⁠·NewsPim cross-checked
  2. Investor-Level Totals(Naver Finance investor data, Aug. 13 close) KOSPI Retail -KRW2.7363tn and foreign investors +KRW2.1067tn and institutions +KRW682.2bn / KOSDAQ Retail +KRW255bn and foreign investors -KRW136.2bn and institutions -KRW113.8bn⁠· KOSPI200 futures (KRX derivatives, value basis) Foreign -KRW129bn and institutions +KRW62bn· Retail +KRW77bn⁠· Program Trading Automated multi-stock orders · a channel through which indexes and investor flows move KOSPI Arbitrage +KRW5.2bn· Non-arbitrage -KRW69.6bn· Total -KRW64.4bn⁠· Cash–futures closing gap +2.46 (cash 1,071.24 · futures 1,073.70 · Sep. 2026 contract · different closing times → not a basis measure)⁠· Aggregate series (Naver) and stock-level series (KRX) cover different market scopes · no cross-aggregation or share calculations⁠· Investor-flow figures in close reports differ by outlet(Foreign KOSPI +KRW2.095tn to +KRW2.4525tn) · body uses a single dashboard series throughout
  3. Stock-Level Investor Flows KRX investor trading statistics (entire stock market · collected Aug. 13, 17:34 KST). Foreign net buy Samsung Electronics +KRW1.5489tn· SK Hynix +KRW1.0551tn· Samsung Electro-Mechanics +KRW153.7bn· HD Hyundai Heavy Industries +KRW82.6bn· KB Financial +KRW53.8bn / Institutional net buying: SK Hynix +KRW257.8bn⁠·NAVER +KRW62.9bn· SK Square +KRW53.2bn, institutional net sells: Samsung Electronics -KRW310bn· KEPCO -KRW96.5bn / Retail net sell SK Hynix -KRW1.2729tn· Samsung Electronics -KRW1.2264tn, Retail net buy Korea Electric Power +KRW143.7bn. Samsung Electronics + SK Hynix foreign net buying totals KRW2.6039tn · simple amount sum · no share calculated against total net buying as denominator
  4. Final Stock Closing Prices Samsung Electronics KRW268,000 (+4.89%) · SK Hynix KRW1,593,000 (+5.92%) · Samsung Electronics Preferred KRW187,800 (+0.91%) · SK Square KRW1,117,000 (+9.08%) · Samsung Electro-Mechanics KRW1,503,000 (+12.58%) · Hyundai Motor KRW418,500 (+2.20%) · LG Energy Solution KRW365,500 (+1.95%) · Samsung Biologics KRW1,564,000 · Hanwha Aerospace KRW1,185,000 · KB Financial KRW168,100: KRX top market-cap names · regular-session closes (dashboard, Naver Finance source)⁠· Short Selling Sell borrowed shares → bet on a decline · turnover basis Turnover leaders Samsung Electronics KRW773.4bn (6.3% share) · SK Hynix KRW321.8bn (3.2%) · Korea Aerospace Industries KRW54.7bn (33.3%) from the same dashboard (regular-session final · KRX+NXT combined)⁠· Korea Aerospace Industries ranked No. 1 in short-selling share with KRW54.7bn short-selling turnover · KRW164.4bn stock turnover · 33.3% share · close KRW151,200 (+4.9%)
  5. Aug. 12 U.S. close Dow 53,770.27 (-0.04%)⁠·S&P500 7,748.50(+0.26%) · Nasdaq 26,588.49 (+0.54%)⁠·SOX 12,399.38(+2.49%) · U.S. 10Y 4.682% (-0.2bp): dashboard (Naver Finance · Yahoo series)⁠· Individual stock NVIDIA +3.03%· Micron +4.92%· SK Hynix ADR +9.01% and the AI infrastructure earnings sequence (CoreWeave · Super Micro · Nebius) background is covered in Yahoo Finance⁠·NewsPim cross-checked ⁠· VIX 14.68 · Dollar Index 99.987 are live quotes as of Aug. 13, 17:30 KST, not official U.S. closes
  6. U.S. July CPI MoM +0.1%· YoY 3.4% · core MoM +0.2%· core y/y 2.5% · Reuters/Dow Jones consensus matched on all four readings, with energy -1.5%· shelter +0.1%· airfares +2.2%, September FOMC hike probability 46% before release → 42% after release (CME rate-futures basis 46.1% → 41.9% · values vary by data provider): CNBC⁠·NewsPim⁠· June actual m/m −0.4%· y/y 3.5% · core m/m flat · y/y 2.6% are from the U.S. Bureau of Labor Statistics June release
  7. Cisco FY26 Q4(after the Aug. 12 U.S. regular-session close) revenue $17.25bn (y/y +18%) · adjusted EPS $1.22 (+23%) · product revenue $13.459bn (+24%) · total product orders +35%· Q4 AI infrastructure orders $4bn · FY27 Q1 revenue guidance $18.0–18.2bn · FY27 full-year revenue $72.2–73.4bn · adjusted EPS $5.05–5.11: Company IR earnings press release⁠· Revenue consensus varies by source from $16.82bn to $16.85bn, so the same Zacks consensus of $16.85bn used in the prior report is retained as the benchmark⁠· After-hours move differed by timestamp: initial rise after release (Benzinga, about +0.9%) followed by a reversal lower during the earnings call (Investing.com, about -4.2%); the body therefore shows the final direction in the -4% range together with the range⁠· Non-GAAP gross margin 66.3% (68.4% a year earlier) and higher component costs including memory are from SiliconANGLE
  8. Samsung Electro-Mechanics upside catalyst Morgan Stanley replaced Samsung Electronics with Samsung Electro-Mechanics as its top Korean tech pick · maintained Overweight · raised target KRW2.56mn → KRW2.62mn; rationale: stronger pricing for high-capacitance MLCCs used in AI servers and improving ABF-substrate demand: EBN⁠·Etoday⁠· SK Square +9.08% was reported as linked to the value of its 20.1% SK Hynix stake; no company filing was confirmed(Etoday)
  9. Korea Electric Power · Electric Utilities downside catalyst iM Securities cut target KRW53,000 → KRW48,000 (Buy maintained) · Q2 operating profit missed market expectations · cited higher fuel and power-purchase costs in 2H and constrained expectations for a tariff hike within the year: Financial News⁠·Etoday⁠· Internet & Catalog Retail -8.17% No stock-specific catalyst was confirmed, so no cause is assigned
  10. FX & Commodities USD/KRW KRW1,419.4 (prior KRW1,415.7 ⁠· +KRW3.7) are Korea FX daytime-session 09:00–15:30 close), using the same series as the prior report ⁠· JPY/KRW per ¥100 KRW890.47 (prior KRW888.64) is from Base Exchange Rate benchmark exchange rate posted as the volume-weighted average of interbank exchange rates series ⁠· The dashboard's USD/KRW 15:30 market-average-rate reading of KRW1,419.50 is a different series and is not used in the body ⁠· WTI $82.16 (-1.33%) · Gold $4,426.00 (+0.39%) · Bitcoin $63,716 are live quotes as of Aug. 13, 17:30 KST ⁠· Aug. 12 WTI official close $83.27 ⁠· Drivers of the oil decline (U.S. weekly crude inventories +17.42mn barrels · OPEC and IEA cuts to 2026 demand forecasts) are from OilPrice⁠·FXStreet⁠· LME copper $14,376.00 (-0.34%) · aluminum $3,307.50 (-1.94%) are Cash prices for Aug. 12
  11. Sectors & Themes Naver Finance sector/theme quotes (Aug. 13 close, collected 17:33 KST): among 79 sectors, 43 up · 0 flat · 36 down; among 219 themes, 95 up · 0 flat · 124 down ⁠· Electronic Equipment & Instruments +9.28%(54 up · 7 flat · 45 down among 106 stocks) · Venture Capital +5.91%(42 up among 90 stocks) · Semiconductors & Semiconductor Equipment +5.15%(87 up · 9 flat · 75 down among 171 stocks) · Interactive Media & Services +3.73%· Electronic Products +0.70%· Pharmaceuticals +0.41%(47 up · 23 flat · 105 down among 175 stocks) · Broadcasting & Entertainment -3.20%· Office Supplies -4.29%(1 constituent) · Electric Utilities -4.88%· Internet & Catalog Retail -8.17%(1 up · 5 down among 6 stocks) / theme: Semiconductor Leaders (Production) +5.22%⁠·S7 +4.55%⁠·MLCC +2.98%· Semiconductor Substrates +2.61%⁠·HBM +1.60%· Semiconductor Equipment +1.33%· Semiconductor Materials/Components -0.48%Sectors are market-cap weighted; themes are simple averages of constituent stocks, so identically named groups can show different returns · sector value used as the reference ⁠· Aug. 12 comparison values (Electronic Products +12.40%· Internet & Catalog Retail +11.06%· Electric Utilities +0.51%· Pharmaceuticals -3.17%· Electronic Equipment & Instruments +5.07%· Venture Capital -0.97%) are from the same source's Aug. 12 collection
  12. Schedule · Benchmarks U.S. July PPI on Aug. 13 · retail sales on Aug. 14 are from U.S. Bureau of Labor Statistics· U.S. Census Bureau official calendar ⁠· PPI m/m consensus +0.2%· June actual −0.3% use Investing.com Economic Calendar, y/y consensus varies by aggregator (Investing.com 4.8%⁠·FactSet 4.9%) body uses about 4.9%· June actual 5.5% ⁠· Applied Materials is released after the Aug. 13 U.S. close (Aug. 14, 05:30 KST); company guidance of revenue $8.95bn ±$0.5bn · non-GAAP EPS $3.36 ±$0.20 is from Company IR, consensus varies by aggregator revenue about $9.0bn (Zacks $9.0bn · Visible Alpha $9.04bn) · adjusted EPS $3.36–3.42 (Zacks $3.36 · Visible Alpha $3.42), body uses about $3.4, near the midpoint ⁠· U.S. July retail-sales m/m consensus +0.3%⁠· July FOMC held 3.50–3.75% · three dissenting votes favored a hike; minutes due Aug. 19 at 2:00 p.m. ET (Aug. 20, 03:00 KST)⁠· Korea market closed Aug. 17 for the Liberation Day substitute holiday · next open Aug. 18

Disclaimer: This material is for market-structure analysis and organization of decision-relevant information only and does not constitute a recommendation to buy or sell any financial instrument.

2026.08.13 ⁠· Sung Oh KOSPI Daily Report