Foreign Money Is Leaving Samsung at the Fastest Clip Since 2009 — and the Chipmaker's Own Guidance Isn't the Reason

Overseas investors pulled 3.4763 trillion won out of Samsung Electronics last week, a retreat that pushed their collective stake down to 45.98% as of Friday — the lowest level since July 2009. The selling wave handed the stock its steepest weekly decline since October 2008, yet the trigger had little to do with Samsung's own order book.

What rattled sentiment was a broader reappraisal of the artificial-intelligence buildout. Questions about whether the enormous capital flowing into AI infrastructure can ever earn an adequate return have been circling the semiconductor sector for weeks, and financing concerns have sharpened them. Reuters reported on October 13 that the selloff gathered pace after China's ChangXin Memory Technologies disclosed progress on a new DRAM design, stoking fears of intensifying competition in memory. Higher funding costs added another drag when South Korean chip names came under pressure on Thursday. US inflation data that came in hotter than expected reinforced bets on further rate hikes, while Bloomberg flagged fresh doubts about how AI projects will be financed.

The distinction matters for anyone reading the tape: capital flight and operating performance are separate variables, even when both feed into the same valuation.

A 17-Year Low in Foreign Ownership

The 3.4763 trillion won of net foreign selling is the headline number, and the 45.98% ownership figure is its clearest consequence. Neither, however, demonstrates that Samsung's business has deteriorated in step. The company's own numbers point the other way.

On October 8, Samsung issued preliminary guidance for the third quarter of 2026: consolidated revenue of roughly 195 trillion won and operating profit of about 107.4 trillion won. Those are advance estimates, not a full earnings release, so they leave the divisional picture — the part that would let investors square competition and AI demand against actual performance — largely blank.

Analysts, for their part, have been marking earnings estimates higher on the back of AI-driven demand and a tighter supply of memory. By Friday, the selloff was being characterized in media reports as an excessive correction, with weak buying support and poor investor sentiment doing more of the damage than fundamentals. That sets up an unusual split: the equity is pricing in higher financing risk across the AI complex, while profit forecasts are being revised upward.

A Handset Wrinkle and an Nvidia Angle

Two further threads complicate the story. Reports from October 8 said Samsung had asked suppliers to cut fourth-quarter production by 20% to 30% in response to rising memory costs — a request the company has not officially confirmed. If accurate, it would put pressure on the smartphone division just as the memory side is being asked to carry the growth case.

On the technology front, a report published today points to closer collaboration with Nvidia. According to media accounts, Nvidia is working with Samsung and TSMC on a custom HBM base chip for NVHBM. The design could lift bandwidth by as much as 30% over standard seventh-generation HBM4E while cutting power consumption by 15%. Those figures are reported development targets, not confirmed product specifications.

October 29 Is the Date That Counts

Samsung has scheduled the release of detailed third-quarter results, including the divisional breakdown, for October 29, with a conference call set for 10:00 a.m. Korean Standard Time. That disclosure is the next hard checkpoint — the point at which the segment-level data can either validate the raised profit estimates or give the foreign sellers fresh ammunition.

Until then, the market is left holding two signals that pull in opposite directions. Heavy overseas selling and a 17-year-low ownership share document deep skepticism about the durability of the AI investment cycle. Preliminary guidance of 195 trillion won in revenue and 107.4 trillion won in operating profit, alongside rising consensus estimates, argues that the memory business is holding up. The October 29 breakdown is what will settle which of those readings the quarter actually supports.