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Korea disclosures digest - 2026-10-30

709 KOSPI/KOSDAQ filings on DART that day (163 high-importance, 59 medium, 487 routine). Below: 22 material filings with automatic summaries that passed our number check, each with the historical price reaction for that filing type. Times are KST; the KRX regular session closes at 15:30.

Summaries are generated automatically from the filing text and DART structured data; every number was checked against the source. 167 further cards failed the check and are held back for review. Each card also shows similar past cases and a model estimate, each with its sample size and date range. These are descriptive statistics of past filings, not forecasts or advice; out of sample the per-filing model is only slightly better than the type average. Market context: in the 20 sessions to 2026-10-21 (last close used) the KOSPI moved -14.6% and the KOSDAQ -3.6%; estimates are not adjusted for market regime. Per-filing estimates: method and out-of-sample validation

2026-10-20 · 2026-10-21 · 2026-10-22 · 2026-10-23 · 2026-10-24 · 2026-10-26 · 2026-10-27 · 2026-10-28 · 2026-10-29 · 2026-10-30

Rights offering (paid-in capital increase)Naver · 035420 · KOSPIfiled 07:38 KST (amended filing)

Naver: Rights offering (paid-in capital increase)

Naver filed: Rights offering (paid-in capital increase) (07:38 KST). Details: see the Korean original on DART.

The key numbers, in plain words Rights offering / new shares

The company will issue 7.2 million shares of new stock.
Share count rises about 4.8%.
Price per new share: KRW 204,500.
Money raised: KRW 1.48 trillion, mainly for other purposes.
The new shares go to specific named investors (third-party allotment), not to all shareholders.

From the filing and DART structured data. Facts only, not advice; the Korean original prevails. Details →

After 586 similar filings (Rights offering (paid-in capital increase)), the stock did better than the market the next day 42% of the time (avg -0.5% vs. the market). Past results, not a prediction.

How we calculate

History (Rights offering (paid-in capital increase), KOSPI, Jan 2023-Oct 2026, n=586): announcement move +0.3% avg; after entry, next-day market-adjusted return avg -0.5% / median -0.4%, positive 42% of the time; 20-day avg -1.2% (median -3.9%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Source: DART 20261030000001 (NAVER, [기재정정]주요사항보고서(유상증자결정)) · automatic summary, number-checked

Preliminary earningsHANMI Semiconductor · 042700 · KOSPIfiled 09:24 KST

HANMI Semiconductor: Preliminary earnings

HANMI Semiconductor filed: Preliminary earnings (09:24 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 41% of the time (usually -0.8% vs. the market). Past results, not a prediction.

How we calculate

History (Preliminary earnings, KOSPI, Jan 2023-Oct 2026, n=4,796): announcement move +0.3% avg; after entry, next-day market-adjusted return avg -0.4% / median -0.5%, positive 43% of the time; 20-day avg -2.3% (median -2.4%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-08): beat the index next day 41% of the time, median -0.8% (middle half -3.7% to +1.6%); 5-day median -3.0%; 20-day median -6.8% (middle half -14.0% to +1.6%, beat index 32%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 44%, 5 days 44%. Type average (Preliminary earnings, KOSPI, n=4,796, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 146.6bn/day (-7.8 pts); market cap KRW 18,319bn (+5.1 pts); prior-day move -4% (+1.5 pts).

This company's own past filings of this type (n=14, since Jan 2023): next-day median -1.9%, 20-day median +3.0%. Latest: 2026-07-14: +23.6% next day, +8.9% 20d; 2026-05-15: -6.9% next day, -19.8% 20d; 2026-02-06: -2.3% next day, +51.2% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800184 (한미반도체, 연결재무제표기준영업(잠정)실적(공정공시)) · automatic summary, number-checked

Single sales/supply contractDaewoo Engineering & Construction · 047040 · KOSPIfiled 11:10 KST

Daewoo Engineering & Construction: Single sales/supply contract

Daewoo Engineering & Construction filed: Single sales/supply contract (11:10 KST). Amount: KRW 330,328,186,500. 4.1% of recent revenue. Details: see the Korean original on DART.

After 3,058 similar filings (Single sales/supply contract), the stock did better than the market the next day 43% of the time (avg -0.2% vs. the market). Past results, not a prediction.

How we calculate

History (Single sales/supply contract, KOSPI, Jan 2023-Oct 2026, n=3,058): announcement move +0.8% avg; after entry, next-day market-adjusted return avg -0.2% / median -0.4%, positive 43% of the time; 20-day avg -0.6% (median -2.5%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Source: DART 20261030800384 (대우건설, 단일판매ㆍ공급계약체결) · automatic summary, number-checked

Single sales/supply contractDaewoo Engineering & Construction · 047040 · KOSPIfiled 10:21 KST

Daewoo Engineering & Construction: Single sales/supply contract

Daewoo Engineering & Construction filed: Single sales/supply contract (10:21 KST). Amount: KRW 274,890,859,701. 3.41% of recent revenue. Period: 2024-08-30 Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 47% of the time (usually -0.1% vs. the market). Past results, not a prediction.

How we calculate

History (Single sales/supply contract, KOSPI, <10% of revenue, Jan 2023-Oct 2026, n=2,043): announcement move +0.6% avg; after entry, next-day market-adjusted return avg -0.1% / median -0.3%, positive 44% of the time; 20-day avg -0.4% (median -2.1%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-10): beat the index next day 47% of the time, median -0.1% (middle half -1.5% to +1.5%); 5-day median +0.9%; 20-day median +2.0% (middle half -7.4% to +8.6%, beat index 57%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 41%, 5 days 43%. Type average (Single sales/supply contract, KOSPI, n=3,058, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 101.0bn/day (-7.1 pts); market cap KRW 6,028bn (+3.7 pts); market-cap bucket 1-10tn (+1.6 pts).

This company's own past filings of this type (n=52, since Jan 2023): next-day median -0.4%, 20-day median -3.5%. Latest: 2026-10-13: -0.2% next day, n/a 20d; 2026-09-21: +2.6% next day, n/a 20d; 2026-09-18: -4.9% next day, n/a 20d. Context only, too few to estimate a probability.

Source: DART 20261030800255 (대우건설, 단일판매ㆍ공급계약체결) · automatic summary, number-checked

Preliminary earningsLG CNS · 064400 · KOSPIfiled 09:32 KST

LG CNS: Preliminary earnings

LG CNS filed: Preliminary earnings (09:32 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 57% of the time (usually +0.5% vs. the market). Past results, not a prediction.

How we calculate

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-08): beat the index next day 57% of the time, median +0.5% (middle half -1.6% to +2.3%); 5-day median +0.5%; 20-day median -1.4% (middle half -6.4% to +6.0%, beat index 42%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 42%, 5 days 43%. Type average (Preliminary earnings, KOSPI, n=4,796, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 33.4bn/day (-5.1 pts); market cap KRW 6,007bn (+3.7 pts); market-cap bucket 1-10tn (+1.6 pts).

This company's own past filings of this type (n=7, since Jan 2023): next-day median -1.4%, 20-day median -6.1%. Latest: 2026-07-31: +5.1% next day, +20.1% 20d; 2026-04-30: -3.7% next day, +75.4% 20d; 2026-01-27: -5.6% next day, -19.3% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800194 (LG씨엔에스, 연결재무제표기준영업(잠정)실적(공정공시)) · automatic summary, number-checked

Preliminary earningsKIWOOM Securities · 039490 · KOSPIfiled 08:11 KST

KIWOOM Securities: Preliminary earnings

KIWOOM Securities filed: Preliminary earnings (08:11 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 42% of the time (usually -0.3% vs. the market). Past results, not a prediction.

How we calculate

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-04): beat the index next day 42% of the time, median -0.3% (middle half -2.3% to +1.9%); 5-day median -0.6%; 20-day median -2.7% (middle half -7.3% to +2.8%, beat index 40%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 42%, 5 days 42%. Type average (Preliminary earnings, KOSPI, n=4,796, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 20.3bn/day (-4.2 pts); market cap KRW 5,508bn (+3.6 pts); market-cap bucket 1-10tn (+1.6 pts).

This company's own past filings of this type (n=13, since Jan 2023): next-day median -2.3%, 20-day median -4.6%. Latest: 2026-07-30: +0.6% next day, -14.6% 20d; 2026-04-30: -4.5% next day, -41.0% 20d; 2026-02-04: -4.3% next day, -8.4% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800044 (키움증권, 연결재무제표기준영업(잠정)실적(공정공시)) · automatic summary, number-checked

Technology licensing / allianceHanmi Pharm · 128940 · KOSPIfiled 07:42 KST

Hanmi Pharm: Technology licensing / alliance

Hanmi Pharm filed: Technology licensing / alliance (07:42 KST). Details: see the Korean original on DART.

Among the 15 most similar past filings, the stock did better than the market the next day 33% of the time (usually -1.5% vs. the market). Past results, not a prediction.

How we calculate

History (Technology licensing / alliance, KOSPI+KOSDAQ, Jan 2023-Oct 2026, n=86): announcement move +5.6% avg; after entry, next-day market-adjusted return avg -0.9% / median -1.3%, positive 37% of the time; 20-day avg -4.4% (median -8.9%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=15; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-05 to 2026-08): beat the index next day 33% of the time, median -1.5% (middle half -3.1% to +2.5%); 5-day median -2.1%; 20-day median -9.6% (middle half -17.0% to -2.3%, beat index 20%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 41%, 5 days 40%. Type average (Technology licensing / alliance, KOSPI, n=15, 2023-05 to 2026-08): 38% / 37%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 61.5bn/day (-6.1 pts); market cap KRW 4,945bn (+3.4 pts); market-cap bucket 1-10tn (+1.6 pts).

This company's own past filings of this type (n=1, since Jan 2023): next-day median -9.0%, 20-day median -23.8%. Latest: 2026-06-01: -9.0% next day, -23.8% 20d. Context only, too few to estimate a probability.

Caution: small sample; next-day type statistic: type sample <150: stability not tested; 20-day type statistic: type sample <150: stability not tested.

Source: DART 20261030800002 (한미약품, 투자판단관련주요경영사항 (파브리병 치료제(LAGLA) 기술이전 계약 체결)) · automatic summary, number-checked

Technology licensing / allianceHanmi Science · 008930 · KOSPIfiled 07:49 KST

Hanmi Science: Technology licensing / alliance

Hanmi Science filed: Technology licensing / alliance (07:49 KST). Details: see the Korean original on DART.

Among the 15 most similar past filings, the stock did better than the market the next day 33% of the time (usually -1.5% vs. the market). Past results, not a prediction.

How we calculate

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 43%, 5 days 43%. Type average (Technology licensing / alliance, KOSPI, n=15, 2023-05 to 2026-08): 38% / 37%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 15.1bn/day (-3.7 pts); prior-day move +11% (-3.5 pts); market cap KRW 3,108bn (+2.9 pts).

This company's own past filings of this type (n=1, since Jan 2023): next-day median -9.0%, 20-day median -13.8%. Latest: 2026-06-01: -9.0% next day, -13.8% 20d. Context only, too few to estimate a probability.

Caution: small sample; next-day type statistic: type sample <150: stability not tested; 20-day type statistic: type sample <150: stability not tested.

Source: DART 20261030800021 (한미사이언스, 투자판단관련주요경영사항(자회사의 주요경영사항) (파브리병 치료제(LAGLA) 기술이전 계약 체결)) · automatic summary, number-checked

Preliminary earningsGS Engineering & Construction · 006360 · KOSPIfiled 09:28 KST

GS Engineering & Construction: Preliminary earnings

GS Engineering & Construction filed: Preliminary earnings (09:28 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 34% of the time (usually -1.0% vs. the market). Past results, not a prediction.

How we calculate

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-08): beat the index next day 34% of the time, median -1.0% (middle half -3.3% to +1.2%); 5-day median -1.5%; 20-day median -3.4% (middle half -10.2% to +1.6%, beat index 37%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 40%, 5 days 41%. Type average (Preliminary earnings, KOSPI, n=4,796, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 44.8bn/day (-5.6 pts); market cap KRW 2,413bn (+2.5 pts); market-cap bucket 1-10tn (+1.6 pts).

This company's own past filings of this type (n=15, since Jan 2023): next-day median +0.8%, 20-day median +3.0%. Latest: 2026-07-29: +1.5% next day, +44.2% 20d; 2026-04-30: -10.6% next day, -59.3% 20d; 2026-02-06: +2.1% next day, +1.2% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800192 (GS건설, 연결재무제표기준영업(잠정)실적(공정공시)) · automatic summary, number-checked

Single sales/supply contractCS Wind · 112610 · KOSPIfiled 09:24 KST (amended filing)

CS Wind: Single sales/supply contract

CS Wind filed: Single sales/supply contract (09:24 KST). Amount: KRW 308,560,797,394. 20.3% of recent revenue. Period: 2024-12-24 to 2026-10-31. Details: see the Korean original on DART.

After 3,058 similar filings (Single sales/supply contract), the stock did better than the market the next day 43% of the time (avg -0.2% vs. the market). Past results, not a prediction.

How we calculate

Source: DART 20261030800168 (씨에스윈드, [기재정정]단일판매ㆍ공급계약체결) · automatic summary, number-checked

Single sales/supply contractHanwha Machinery & Service · 0220W0 · KOSPIfiled 11:21 KST

Hanwha Machinery & Service: Single sales/supply contract

Hanwha Machinery & Service filed: Single sales/supply contract (11:21 KST). Period: 2026-10-29 to 2027-06-04. Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 42% of the time (usually -1.4% vs. the market). Past results, not a prediction.

How we calculate

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-02 to 2026-09): beat the index next day 42% of the time, median -1.4% (middle half -3.8% to +1.9%); 5-day median -1.9%; 20-day median -4.1% (middle half -14.7% to +9.5%, beat index 43%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 38%, 5 days 35%. Type average (Single sales/supply contract, KOSPI, n=3,058, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 19.7bn/day (-4.1 pts); prior 5-day move vs. index +43% (-3.1 pts); prior 20-day move vs. index +39% (+2.5 pts).

This company's own past filings of this type: none since Jan 2023.

Source: DART 20261030800412 (한화머시너리앤서비스홀딩스, 단일판매ㆍ공급계약체결(자회사의 주요경영사항)) · automatic summary, number-checked

Share cancellationBGF · 027410 · KOSPIfiled 12:11 KST

BGF: Share cancellation

BGF filed: Share cancellation (12:11 KST). Details: see the Korean original on DART.

The key numbers, in plain words Share cancellation

3.8 million shares will be cancelled, about 6.0% of all shares.
Fewer shares means each remaining share is a slightly larger slice of the company.
Planned cancellation date: 2026-11-10.

From the filing and DART structured data. Facts only, not advice; the Korean original prevails. Details →

Among the 100 most similar past filings, the stock did better than the market the next day 46% of the time (usually -0.1% vs. the market). Past results, not a prediction.

How we calculate

History (Share cancellation, KOSPI, Jan 2023-Oct 2026, n=549): announcement move +1.6% avg; after entry, next-day market-adjusted return avg -0.4% / median -0.4%, positive 42% of the time; 20-day avg -2.3% (median -2.8%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-02 to 2026-10): beat the index next day 46% of the time, median -0.1% (middle half -1.9% to +0.9%); 5-day median -0.9%; 20-day median -1.2% (middle half -8.1% to +6.3%, beat index 46%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 46%, 5 days 43%. Type average (Share cancellation, KOSPI, n=549, 2023-01 to 2026-10): 42% / 40%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 0.3bn/day (+3.3 pts); filed for a subsidiary (+2.6 pts); prior-day move +5% (-1.5 pts).

This company's own past filings of this type (n=1, since Jan 2023): next-day median +2.7%, 20-day median n/a. Latest: 2026-10-07: +2.7% next day, n/a 20d. Context only, too few to estimate a probability.

Source: DART 20261030800437 (BGF, 주식소각결정(자회사의 주요경영사항)) · automatic summary, number-checked

Preliminary earningsXi S&D · 317400 · KOSPIfiled 10:11 KST

Xi S&D: Preliminary earnings

Xi S&D filed: Preliminary earnings (10:11 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 49% of the time (usually -0.1% vs. the market). Past results, not a prediction.

How we calculate

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-02 to 2026-08): beat the index next day 49% of the time, median -0.1% (middle half -1.7% to +2.5%); 5-day median -0.5%; 20-day median -3.4% (middle half -10.7% to +3.2%, beat index 42%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 40%, 5 days 39%. Type average (Preliminary earnings, KOSPI, n=4,796, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 7.2bn/day (-2.4 pts); time of filing intraday (+0.8 pts); prior 20-day move vs. index -9% (-0.6 pts).

This company's own past filings of this type (n=15, since Jan 2023): next-day median -0.7%, 20-day median -2.8%. Latest: 2026-07-29: +2.9% next day, +79.2% 20d; 2026-04-30: -8.0% next day, -57.8% 20d; 2026-01-26: -4.8% next day, -9.2% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800229 (자이에스앤디, 연결재무제표기준영업(잠정)실적(공정공시)) · automatic summary, number-checked

Single sales/supply contractCMES Robotics · 475400 · KOSDAQfiled 09:50 KST (amended filing)

CMES Robotics: Single sales/supply contract

CMES Robotics filed: Single sales/supply contract (09:50 KST). Amount: KRW 630,000,000. 8.25% of recent revenue. Period: 2025-02-24 to 2025-04-30. Details: see the Korean original on DART.

After 3,044 similar filings (Single sales/supply contract), the stock did better than the market the next day 39% of the time (avg -0.6% vs. the market). Past results, not a prediction.

How we calculate

History (Single sales/supply contract, KOSDAQ, Jan 2023-Oct 2026, n=3,044): announcement move +1.9% avg; after entry, next-day market-adjusted return avg -0.6% / median -0.8%, positive 39% of the time; 20-day avg -1.3% (median -3.9%). Typical KOSDAQ stock on any day: 1d median -0.3%, 20d median -2.6%.

Source: DART 20261030900219 (씨메스로보틱스, [기재정정]단일판매ㆍ공급계약체결(자율공시)) · automatic summary, number-checked

Preliminary earningsHyundai BNG Steel · 004560 · KOSPIfiled 11:00 KST

Hyundai BNG Steel: Preliminary earnings

Hyundai BNG Steel filed: Preliminary earnings (11:00 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 48% of the time (usually -0.2% vs. the market). Past results, not a prediction.

How we calculate

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-02 to 2026-08): beat the index next day 48% of the time, median -0.2% (middle half -1.6% to +1.5%); 5-day median -1.8%; 20-day median -1.5% (middle half -8.1% to +3.2%, beat index 44%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 43%, 5 days 41%. Type average (Preliminary earnings, KOSPI, n=4,796, 2023-01 to 2026-10): 43% / 42%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 0.6bn/day (+2.1 pts); time of filing intraday (+0.8 pts); prior-day move +3% (-0.8 pts).

This company's own past filings of this type (n=11, since Jan 2023): next-day median -0.8%, 20-day median -8.5%. Latest: 2026-08-03: +2.8% next day, -2.0% 20d; 2026-04-24: +0.4% next day, -36.6% 20d; 2025-10-31: -2.5% next day, +0.2% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800368 (현대비앤지스틸, 연결재무제표기준영업(잠정)실적(공정공시)) · automatic summary, number-checked

Preliminary earningsRaon Robotics · 232680 · KOSDAQfiled 10:24 KST

Raon Robotics: Preliminary earnings

Raon Robotics filed: Preliminary earnings (10:24 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 45% of the time (usually -0.3% vs. the market). Past results, not a prediction.

How we calculate

History (Preliminary earnings, KOSDAQ, Jan 2023-Oct 2026, n=2,390): announcement move +0.8% avg; after entry, next-day market-adjusted return avg -0.3% / median -0.5%, positive 43% of the time; 20-day avg -0.5% (median -2.4%). Typical KOSDAQ stock on any day: 1d median -0.3%, 20d median -2.6%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-08): beat the index next day 45% of the time, median -0.3% (middle half -2.3% to +1.7%); 5-day median +0.0%; 20-day median -3.0% (middle half -7.2% to +4.7%, beat index 40%).

What moves the estimate vs. the type average (next-day model): prior-day move -4% (+1.5 pts); market cap KRW 117bn (-1.2 pts); trading value (liquidity) KRW 1.1bn/day (+0.9 pts).

This company's own past filings of this type (n=15, since Jan 2023): next-day median -0.1%, 20-day median -5.2%. Latest: 2026-07-31: -1.7% next day, -6.4% 20d; 2026-04-30: +1.6% next day, +12.5% 20d; 2026-01-30: +17.3% next day, -22.6% 20d. Context only, too few to estimate a probability.

Source: DART 20261030900257 (라온로보틱스, 영업(잠정)실적(공정공시)) · automatic summary, number-checked

Convertible bond issuanceAdbiotech · 179530 · KOSDAQfiled nan KST

Adbiotech: Convertible bond issuance

Adbiotech filed: Convertible bond issuance (n/a KST). Amount: KRW 1,000,000,000. Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 35% of the time (usually -1.5% vs. the market). Past results, not a prediction.

How we calculate

History (Convertible bond issuance, KOSDAQ, <5% of mkt cap, Jan 2023-Oct 2026, n=169): announcement move +0.6% avg; after entry, next-day market-adjusted return avg -1.1% / median -0.8%, positive 38% of the time; 20-day avg -4.4% (median -7.5%). Typical KOSDAQ stock on any day: 1d median -0.3%, 20d median -2.6%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-10): beat the index next day 35% of the time, median -1.5% (middle half -4.0% to +1.2%); 5-day median -2.7%; 20-day median -12.2% (middle half -17.4% to +2.3%, beat index 27%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 37%, 5 days 39%. Type average (Convertible bond issuance, KOSDAQ, n=1,141, 2023-01 to 2026-10): 39% / 41%.

What moves the estimate vs. the type average (next-day model): size bucket <5% of mkt cap (-2.4 pts); trading value (liquidity) KRW 0.5bn/day (+2.3 pts); prior-day move +6% (-2.0 pts).

This company's own past filings of this type (n=5, since Jan 2023): next-day median -0.7%, 20-day median +15.7%. Latest: 2026-06-26: -14.3% next day, -16.1% 20d; 2026-05-28: +0.2% next day, +15.7% 20d; 2025-07-25: -1.9% next day, -28.6% 20d. Context only, too few to estimate a probability.

Source: DART 20261029000674 (애드바이오텍, 주요사항보고서(전환사채권발행결정)) · automatic summary, number-checked

Delisting / administrative issue designationKwang Myung Electric · 017040 · KOSPIfiled 09:25 KST

Kwang Myung Electric: Delisting / administrative issue designation

Kwang Myung Electric filed: Delisting / administrative issue designation (09:25 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 39% of the time (usually -0.7% vs. the market). Past results, not a prediction.

How we calculate

History (Delisting / administrative issue designation, KOSPI, Jan 2023-Oct 2026, n=175): announcement move -8.1% avg; after entry, next-day market-adjusted return avg -0.1% / median -0.4%, positive 43% of the time; 20-day avg -6.6% (median -4.5%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-10): beat the index next day 39% of the time, median -0.7% (middle half -2.1% to +1.1%); 5-day median -0.8%; 20-day median -5.3% (middle half -10.3% to +1.6%, beat index 31%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 49%, 5 days 46%. Type average (Delisting / administrative issue designation, KOSPI, n=175, 2023-01 to 2026-10): 43% / 43%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 0.0bn/day (+8.5 pts); voluntary disclosure (+3.2 pts); market cap KRW 40bn (-2.6 pts).

This company's own past filings of this type (n=3, since Jan 2023): next-day median -2.6%, 20-day median -29.9%. Latest: 2026-04-07: -6.9% next day, -36.3% 20d; 2026-03-06: -2.6% next day, -29.9% 20d; 2025-03-13: +0.6% next day, -2.3% 20d. Context only, too few to estimate a probability.

Caution: very thin trading (under KRW 0.1bn/day): thinly traded stocks often close unchanged, which counts as beating a falling index, so the model estimate is likely too high; next-day type statistic: direction not consistent across years.

Source: DART 20261030800185 (광명전기, 상장적격성실질심사관련주요개선계획(자율공시)) · automatic summary, number-checked

Rights offering (paid-in capital increase)Sigetronics · 429270 · KOSDAQfiled 18:24 KST

Sigetronics: Rights offering (paid-in capital increase)

Sigetronics filed: Rights offering (paid-in capital increase) (18:24 KST). Amount: KRW 1,999,999,680. New shares: 10.6% of existing shares. Details: see the Korean original on DART.

The key numbers, in plain words Rights offering / new shares

The company will issue 762,195 shares of new stock.
Share count rises about 11%.
Price per new share: KRW 2,624 (10% below the reference price).
Money raised: KRW 2.0bn, mainly for day-to-day running costs.
The new shares go to specific named investors (third-party allotment), not to all shareholders.

From the filing and DART structured data. Facts only, not advice; the Korean original prevails. Details →

Among the 100 most similar past filings, the stock did better than the market the next day 41% of the time (usually -1.3% vs. the market). Past results, not a prediction.

How we calculate

History (Rights offering (paid-in capital increase), KOSDAQ, third-party, 10-30% new shares, Jan 2023-Oct 2026, n=94): announcement move +6.9% avg; after entry, next-day market-adjusted return avg -1.1% / median -0.8%, positive 43% of the time; 20-day avg +0.3% (median -3.4%). Typical KOSDAQ stock on any day: 1d median -0.3%, 20d median -2.6%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-10): beat the index next day 41% of the time, median -1.3% (middle half -5.4% to +3.3%); 5-day median -2.1%; 20-day median -6.0% (middle half -14.4% to +1.7%, beat index 30%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 39%, 5 days 37%. Type average (Rights offering (paid-in capital increase), KOSDAQ, n=1,385, 2023-01 to 2026-10): 38% / 38%.

What moves the estimate vs. the type average (next-day model): market cap KRW 19bn (-3.4 pts); size bucket third-party, 10-30% new shares (+2.6 pts); trading value (liquidity) KRW 0.9bn/day (+1.4 pts).

This company's own past filings of this type (n=3, since Jan 2023): next-day median -8.4%, 20-day median -13.6%. Latest: 2026-09-04: -8.4% next day, -13.6% 20d; 2025-10-15: -11.1% next day, -18.5% 20d; 2025-04-24: +1.3% next day, -13.5% 20d. Context only, too few to estimate a probability.

Source: DART 20261029000669 (시지트로닉스, 주요사항보고서(유상증자결정)) · automatic summary, number-checked

Acquisition of shares in another companyHyundai Autoever · 307950 · KOSPIfiled 10:20 KST

Hyundai Autoever: Acquisition of shares in another company

Hyundai Autoever filed: Acquisition of shares in another company (10:20 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 46% of the time (usually -0.1% vs. the market). Past results, not a prediction.

How we calculate

History (Acquisition of shares in another company, KOSPI, Jan 2023-Oct 2026, n=922): announcement move +0.5% avg; after entry, next-day market-adjusted return avg -0.3% / median -0.3%, positive 44% of the time; 20-day avg -2.4% (median -3.3%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-10): beat the index next day 46% of the time, median -0.1% (middle half -1.1% to +1.4%); 5-day median -1.9%; 20-day median -3.1% (middle half -10.3% to +3.9%, beat index 39%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 47%, 5 days 44%. Type average (Acquisition of shares in another company, KOSPI, n=922, 2023-01 to 2026-10): 44% / 38%.

What moves the estimate vs. the type average (next-day model): market cap KRW 8,392bn (+4.2 pts); trading value (liquidity) KRW 16.9bn/day (-4.0 pts); market-cap bucket 1-10tn (+1.7 pts).

This company's own past filings of this type (n=1, since Jan 2023): next-day median +0.8%, 20-day median +2.9%. Latest: 2024-05-17: +0.8% next day, +2.9% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800265 (현대오토에버, 타법인주식및출자증권취득결정) · automatic summary, number-checked

Other material event (investment-relevant)GC Biopharma · 006280 · KOSPIfiled 07:42 KST

GC Biopharma: Other material event (investment-relevant)

GC Biopharma filed: Other material event (investment-relevant) (07:42 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 44% of the time (usually -0.3% vs. the market). Past results, not a prediction.

How we calculate

History (Other material event (investment-relevant), KOSPI, Jan 2023-Oct 2026, n=2,509): announcement move +0.6% avg; after entry, next-day market-adjusted return avg -0.4% / median -0.4%, positive 41% of the time; 20-day avg -2.9% (median -3.1%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-02 to 2026-10): beat the index next day 44% of the time, median -0.3% (middle half -1.4% to +1.8%); 5-day median -1.6%; 20-day median -6.7% (middle half -15.1% to +2.7%, beat index 26%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 40%, 5 days 40%. Type average (Other material event (investment-relevant), KOSPI, n=2,509, 2023-01 to 2026-10): 41% / 40%.

What moves the estimate vs. the type average (next-day model): market cap KRW 1,461bn (+1.9 pts); prior-day move +6% (-1.8 pts); market-cap bucket 1-10tn (+1.6 pts).

This company's own past filings of this type (n=12, since Jan 2023): next-day median -1.2%, 20-day median +1.0%. Latest: 2026-05-06: +0.7% next day, -15.4% 20d; 2026-02-05: -3.4% next day, -21.5% 20d; 2025-12-16: -1.0% next day, -23.6% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800005 (녹십자, 투자판단관련주요경영사항) · automatic summary, number-checked

Clarification of rumor / inquiryHanwha Galleria · 452260 · KOSPIfiled 12:11 KST

Hanwha Galleria: Clarification of rumor / inquiry

Hanwha Galleria filed: Clarification of rumor / inquiry (12:11 KST). Details: see the Korean original on DART.

Among the 100 most similar past filings, the stock did better than the market the next day 42% of the time (usually -1.2% vs. the market). Past results, not a prediction.

How we calculate

History (Clarification of rumor / inquiry, KOSPI, Jan 2023-Oct 2026, n=1,447): announcement move +0.5% avg; after entry, next-day market-adjusted return avg -0.4% / median -0.4%, positive 43% of the time; 20-day avg -3.4% (median -4.0%). Typical KOSPI stock on any day: 1d median -0.2%, 20d median -2.5%.

Similar past cases (n=100; same type & market, closest on deal size, market cap, prior run-up, volatility and liquidity; filed 2023-01 to 2026-10): beat the index next day 42% of the time, median -1.2% (middle half -2.3% to +1.5%); 5-day median -0.9%; 20-day median -3.6% (middle half -14.1% to +9.0%, beat index 38%).

Model estimate, chance of beating the index (logistic model, trained on n=58,456 filings 2023-01 to 2026-10): next day 41%, 5 days 38%. Type average (Clarification of rumor / inquiry, KOSPI, n=1,447, 2023-01 to 2026-10): 43% / 40%.

What moves the estimate vs. the type average (next-day model): trading value (liquidity) KRW 5.1bn/day (-1.8 pts); prior 5-day move vs. index +21% (-1.6 pts); prior-day move +5% (-1.5 pts).

This company's own past filings of this type (n=8, since Jan 2023): next-day median -0.0%, 20-day median -10.5%. Latest: 2026-09-17: +1.0% next day, n/a 20d; 2026-06-11: +7.9% next day, -13.2% 20d; 2025-12-17: +8.5% next day, +32.2% 20d. Context only, too few to estimate a probability.

Source: DART 20261030800443 (한화갤러리아, 풍문또는보도에대한해명(미확정)) · automatic summary, number-checked

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