Korea Top Gainers Oct 21: Only Hyein Has a DART Filing Behind Its Limit-Up
Hyein filed a 46.3 billion won supply contract. Hyungji Elite is limit-up for a second day with no filing, and Elice is bouncing after a 32% first-day drop.

Seoul — As of 1:30 p.m. KST on Oct 21, 2026; intraday figures. Three stocks are up more than 20%, all near the 30% daily limit: Hyein (003010), Hyungji Elite (093240) and Elice (0158S0). Only Hyein has a company filing behind it, a supply contract; Hyungji Elite has no filing, and Elice looks like a rebound from a sharp drop the day before. The KOSPI is up 2.58% at 5,696.08 and the KOSDAQ (tech- and small-cap-heavy market) is up 1.36% at 792.62. We will update this article with closing figures after the market closes.

Key points
- KOSPI +2.58% (5,696.08) after closing down 3.73% at 5,552.74 on Oct 20 (Seoul Shinmun). KOSDAQ +1.36% (792.62).
- Three stocks up 20% or more, with combined trading value of about 147.6 billion won.
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- Hyein +29.98% | Single sales/supply contract filing (DART, Korea's official disclosure system, Oct 21)
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- Hyungji Elite +29.94% | No filing found; 'delisting reprieve' buying reported (Money Today)
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- Elice +29.92% | No filing found; rebound after first-day plunge reported (Yonhap)
At a glance
| Stock | Why it rose | Nature | Evidence | What to check next |
|---|---|---|---|---|
| Hyein | 46.3 billion won emergency generator supply deal for a Pohang AI data center | Substantive, one-off | Filing confirmed | Contract term and delivery timing in the filing; tomorrow's trading value |
| Hyungji Elite | Reported short-term buying on hopes of a delisting reprieve | Expectation | None | Any company filing; trading value after the limit-up |
| Elice | Rebound from a 32% first-day drop | Expectation | Reports only | Recovery to the IPO price; institutional lock-up expiry date |
Hyein (003010) is up on a 46.3 billion won supply contract filing

Hyein is up 29.98% at 10,450 won after filing a contract to supply emergency generators to a Pohang AI data center. According to DART, a 'single sales/supply contract' filing was submitted today. Bridge Economy and Data Investment reported the 46.3 billion won deal relates to Hyundai Engineering & Construction's Pohang AI data center construction, and CEO Economy reported it equals 19.18% of revenue. That is about 35% of the 132.8 billion won market cap. Trading value is 22.7 billion won.
The counterparty and amount come from press reports, and it is a single contract, so it is one-off. The stock is up about 61% from 6,470 won on Oct 15, and foreigners were net sellers on four of the last five sessions (about 66,000 shares on Oct 20). Watch the contract term and delivery timing in the filing, and whether trading value holds tomorrow.
Hyungji Elite (093240) is limit-up a second day with no company filing

Hyungji Elite is up 29.94% at 2,500 won, and the only explanation is a press report of buying on delisting-reprieve hopes. Money Today ran 'Hyungji Elite limit-up on delisting-reprieve buying; three Hyungji Group companies surge for a second day', and Korea Economic Daily wrote about a 'day-trading warning' on penny stocks spared from delisting. The company filed nothing in the past seven days. Individuals bought about 111,000 shares net on Oct 20; trading value is 10.6 billion won and market cap is 30.7 billion won.
The 744% gain implied by the price table (296 won to 2,500 won) is not used here. Yesterday's limit-up of 1,924 won was recorded as a 30% rise, which suggests the reference price was adjusted for a reverse share split (a headline from Japost mentions the period 'after the share consolidation'). NoCut News reported that the first delisting under the sub-1,000-won rule comes on the 22nd. Watch for company-issued business or financial filings and whether trading value holds after the limit-up.
Elice (0158S0) is rebounding a day after a 32% listing-day plunge

Elice is up 29.92% at 79,900 won on its second trading day on the KOSDAQ. Yonhap reported the stock jumped back after a 32% drop on its first day, and Munhwa Ilbo tied the rebound to retail buying after U.S. commentary called the plunge proof of an 'AI bubble'. Against the first-day close of 61,600 won it is up 29.7%, but it is still 11.71% below the IPO price (Vegan News). Trading value is 114.3 billion won and market cap is 889.2 billion won.
The company filed no news-making disclosure. The 5.21% stake held by Korea Development Bank was reported as a new filing after the listing. On the first day individuals bought about 672,000 shares net while institutions sold about 519,000 and foreigners about 118,000. Watch whether the stock regains the IPO price and when the institutional lock-up expires, which sets how many shares can reach the market.
FAQ
Why did Hyein stock go up?
46.3 billion won emergency generator supply deal for a Pohang AI data center. Evidence: Filing confirmed. What to check next: Contract term and delivery timing in the filing; tomorrow's trading value.
Why did Hyungji Elite stock go up?
Reported short-term buying on hopes of a delisting reprieve. Evidence: None. What to check next: Any company filing; trading value after the limit-up.
Why did Elice stock go up?
Rebound from a 32% first-day drop. Evidence: Reports only. What to check next: Recovery to the IPO price; institutional lock-up expiry date.