Foreign investors selling Korean stocks: 199 trillion won out this year

Overseas investors have net sold about 199 trillion won of KOSPI shares in 2026 and kept selling as the index slid on Tuesday, Oct. 13. What the Korea Exchange numbers show, who bought the shares, and why two chipmakers make the flows matter so much.

Foreign investors selling Korean stocks kept at it on Tuesday, Oct. 13, unloading a net 2.2 trillion won of KOSPI shares by The Korea Herald’s 3 p.m. count as the index fell nearly 6%. That came on top of 199.1045 trillion won of net selling on the KOSPI main board from Jan. 2 through Monday, excluding exchange-traded funds, according to Korea Exchange figures reported by Seoul Economic Daily.

Where it stands: The KOSPI was down 5.98% at 6,007.37 in the Herald’s 3 p.m. reading. The official 3:30 p.m. close and the full-day investor breakdown had not been published by an outlet we could verify when this was written, so Tuesday’s figures here are intraday snapshots with their times.

The KOSPI is South Korea’s main stock index. When headlines say foreigners are dumping Korean shares, this is usually the market they mean, and this year the selling has been close to continuous. Here is what the numbers show, who has been on the other side of those trades, and why the answer keeps coming back to two companies: Samsung Electronics and SK hynix.

What net selling means

Every share sold has a buyer, so a headline saying foreigners sold 2 trillion won does not mean money vanished. It means that, across all their trades, overseas investors sold 2 trillion won more than they bought. Someone else, usually Korean individuals or Korean institutions such as pension funds, insurers and asset managers, bought the difference.

Two more terms come up below. The main board is the KOSPI market itself, as opposed to the smaller, tech-heavy KOSDAQ. Exchange-traded funds, or ETFs, are baskets of stocks that trade like a single share; the 199.1045 trillion won figure leaves them out.

The 2026 tally of foreign investors selling Korean stocks

Seoul Economic Daily broke the Korea Exchange data down by month. Only two of the first nine months, January and April, showed net buying, and foreigners have been net sellers every month since May. The heaviest selling came in May and June, around the time the index set its records.

Month (2026) Foreign net flow, KOSPI main board
January bought 118.6 billion won
February sold 21.0731 trillion won
March sold 35.8806 trillion won
April bought 1.1283 trillion won
May sold 44.7147 trillion won
June sold 48.6248 trillion won
July sold 9.8936 trillion won
August sold 10.1756 trillion won
September sold 21.5246 trillion won
October 1-12 sold 8.4635 trillion won

Different outlets round the total differently. The Korea Herald said overseas investors had unloaded a net 199 trillion won this year, and Mirae Asset Securities’ Kim Seok-hwan told SBS the figure was approximately 200 trillion won. Monday alone added 2.02 trillion won of foreign net selling, Yonhap reported via The Korea Herald.

One twist: the same foreigners who dumped individual shares kept buying Korean ETFs. They were net buyers of 9.6595 trillion won of Korea-listed ETFs between January and Oct. 12, the paper reported. So the data points less to foreigners abandoning Korea than to a large shift away from owning individual shares directly.

Tuesday’s flows, by the clock

Investor-type data comes out during the session, and each outlet reports the running total at a different moment. These are cumulative figures for the day up to each time, not separate trades.

Time, outlet Foreigners Individuals / institutions
Early trade, Seoul Economic Daily sold 948.8 billion won bought 493 billion / 383.8 billion won
9:55 a.m., Herald Business sold 1.06 trillion won bought 666.2 billion / 300 billion won
10:02 a.m., Financial News sold 1.2097 trillion won bought 741.5 billion / 354.1 billion won
10:40 a.m., Seoul Economic Daily sold 1.81 trillion won bought 1.05 trillion / 598.7 billion won
3 p.m. story, Korea Herald sold 2.2 trillion won not given

The numbers come from different reports and do not form one clean series, but the direction never changed: at every reading that gave a breakdown, foreigners sold while Korean individuals and institutions bought. Seoul Economic Daily also counted 1.02 trillion won of net selling by program trading, meaning computer-driven orders, as of 10:40 a.m.

That program selling is what Korea’s sidecar rule is built to slow. If KOSPI 200 futures swing at least 5% and stay there for a full minute, the exchange pauses program orders for five minutes, while ordinary trading carries on. It fired on Tuesday morning. A circuit breaker, which halts the whole market, needs the index itself to fall 8% or more. Our hour-by-hour account of Tuesday’s KOSPI plunge covers the minute-by-minute moves and the difference between the two tools.

Who has been absorbing the selling

Over the past two sessions, Korean individual investors did most of the buying. Tuesday’s morning figures show individuals taking more than institutions at every timestamp. On Monday, individuals were net buyers of 1.47 trillion won while institutions were small net sellers, at 110.65 billion won.

Korean outlets have pointed to limits on that support. SBS reported that many retail investors are still sitting on losses from the July slump, and that institutions, including pension funds, have had “limited buying capacity”. Seoul Economic Daily added that retail holders who bought above the 7,000 level are an overhang, meaning a pool of investors who may sell to get their money back if prices recover. A third buyer has also faded: Samsung has finished its share buyback and SK hynix is near the end of its own, the paper reported.

The KOSPI’s 2026 path

The selling sits against an unusually volatile year. The highest KOSPI close we found was 9,114.55, on June 22, Korea JoongAng Daily reported. SBS put the intraday peak at 9,385.59 on June 19.

Then came July. On July 28 a circuit breaker stopped all KOSPI trading for 20 minutes from 10:14 a.m., and the index ended the day 10.84% lower at 6,023.63, according to The Korea Times. SBS said the intraday low came the next day, at 5,262.77 on July 29. The index recovered to close at 7,003.74 on Oct. 2. Even after the latest losses, the index still showed a 51% gain for 2026 as of Monday’s close, the Herald reported.

Why two chipmakers magnify foreign flows

Samsung Electronics and SK hynix make up “nearly half” of the KOSPI’s total market capitalization, according to SBS. Market capitalization is a company’s share price times its share count, and indexes weight their members by it. So when foreign funds trim their Korean memory-chip holdings, the selling lands on stocks that carry close to half the index’s weight.

September showed how lopsided this can get. From Sept. 1 through Oct. 2, foreigners net sold 20.305 trillion won of KOSPI shares, and 12.009 trillion won of that was SK hynix and 5.186 trillion won was Samsung, The Korea Herald reported, citing Korea Exchange and Yonhap Infomax data. Foreign ownership of SK hynix fell to 49.76% as of Oct. 2, its lowest since May 2023, and foreigners’ share of the whole KOSPI’s market value dropped to 39.66%.

For how one sector can come to dominate an index, see our look at how much of an index fund depends on one spending cycle, and for the wider fund picture, our emerging-market ETF outlook for 2026. The US side of the chip selloff is in our piece on Micron stock after the CXMT news.

Analysts gave a range of reasons, and not all are about chips. Toss Securities’ Lee Young-gon told Seoul Economic Daily that foreign investors “are also reducing exposure to risk assets and emerging-market assets as part of global allocation decisions in response to geopolitical risk.” Eugene Investment & Securities’ Heo Jae-hwan offered a comparison with Taiwan, the other big chip-heavy market in Asia: measured against the size of each market, he told The Korea Herald, foreign selling in Korea has been more than three times as intense.

Frequently Asked Questions

How much Korean stock have foreign investors sold in 2026?

Korea Exchange data reported by Seoul Economic Daily shows foreign investors net sold 199.1045 trillion won of KOSPI main-board shares, excluding ETFs, from Jan. 2 through Oct. 12. The Korea Herald reported a further 2.2 trillion won of net selling on Oct. 13 as of its 3 p.m. story.

Who is buying when foreigners sell Korean stocks?

Mostly Korean individual investors, with institutions buying smaller amounts. At 10:40 a.m. on Oct. 13, Seoul Economic Daily reported that foreigners were net sellers of 1.81 trillion won, while individuals were net buyers of 1.05 trillion won and institutions of 598.7 billion won.

Are foreign investors leaving Korea entirely?

Not entirely. While selling individual KOSPI shares, foreign investors were net buyers of 9.6595 trillion won of Korea-listed ETFs in 2026 through Oct. 12, according to Korea Exchange data reported by Seoul Economic Daily.

Why do Samsung and SK hynix matter so much for foreign flows?

SBS reported that the two companies account for nearly half of the KOSPI’s market capitalization. From Sept. 1 to Oct. 2, foreigners net sold 12.009 trillion won of SK hynix and 5.186 trillion won of Samsung out of 20.305 trillion won in total, The Korea Herald reported.

How much is the KOSPI up in 2026?

As of the Oct. 12 close the KOSPI had gained 51% in 2026, according to The Korea Herald. Its record close, 9,114.55, was reported by Korea JoongAng Daily on June 22.

Sources

This article is for general information only and is not investment, tax or legal advice. Life Stonks does not recommend buying or selling any security, and nothing here predicts what any market or stock will do. Intraday market figures change through the trading day; the times and sources are given where each figure appears. Talk to a licensed professional before making a financial decision.