AI Chip Selloff: Is a Wider Stock Market Crash Next?

South Korea's Kospi index, Samsung Electronics and SK Hynix all posted steep declines, and the selloff spread to other Asian markets and Wall Street. The moves land two days before the US Federal Reserve's July policy meeting, adding another layer of uncertainty. This article explains what happened, why it matters, and what UK investors are asking about a wider stock market crash. This is for information purposes only and does not constitute financial advice.

What Happened: The AI Chip Selloff Explained

Shares in major AI chip suppliers fell sharply on 28 July 2026 as investors grew more cautious about the returns generated by heavy AI infrastructure investment.

On 28 July 2026, Samsung Electronics shares fell more than 13% and SK Hynix dropped over 14% during intraday Seoul trading, according to CNBC. South Korea's Kospi index, in which the two chipmakers together account for around half the index weight, closed down 10.8% at 6,023.66, its lowest level since April, according to Yahoo Finance, citing Associated Press reporting, on 28 July 2026.

Trading was temporarily halted during the session after the sharp fall. Japan's Nikkei 225 dropped roughly 4% to 62,364.92 and Taiwan's Taiex fell 4.7%, dragged down by chipmaker TSMC, per the same Associated Press report.

Why Wall Street and Asia Are Both Affected

The selloff did not start in Asia. According to CNBC (28 July 2026), Asian chip stocks fell after another weak session for US semiconductor shares, with the VanEck Semiconductor ETF down more than 2% and big names including AMD, Teradyne and Micron Technology also lower.

Samsung and SK Hynix are among the largest global suppliers of high bandwidth memory chips used in AI servers, which makes their share prices particularly sensitive to expectations about AI infrastructure spending by major US technology companies, per CNBC.

Is This the Start of a Broader Stock Market Crash?

A single sharp selloff in one sector does not, on its own, indicate a broader stock market crash, and analysts remain divided on how far AI related weakness could spread.

Some commentators argue current conditions echo the dotcom era. Fortune (8 June 2026) reported that some analysts, including self-described AI bubble sceptics, have questioned whether reported revenue growth at leading AI firms reflects genuine demand or heavy pricing discounts used to build market share.

Other analysts push back. Strategists at Bank of America, cited by The Motley Fool, have argued that recent tech selloffs appeared disconnected from underlying fundamentals, noting AI remains an early stage technology with further growth potential. These are third party views, not IG's own forecasts, and are not a guarantee of future performance.

Others are arguing that the capital is simply shifting from one market segment of the AI trade to another along the normal lines of changing supply and demand.

Bear case versus bull case (third party views, not IG forecasts)

What Analysts Are Watching

Commentary widely points to two factors behind the current bout of selling: questions about the pace and payoff of AI capital spending, and concern that Federal Reserve policy could raise the relative cost of holding high growth, low current earnings assets.

Losses can exceed your initial deposit when trading with leverage.

How This Connects to Wednesday's Fed Decision

The AI chip selloff lands two days before the Federal Reserve's 28 to 29 July meeting, where markets are debating whether policymakers will hold interest rates or opt for a rare hike.

The Federal Reserve's benchmark rate has stood in a target range of 3.50% to 3.75% since its June meeting, according to the Federal Reserve's own published minutes. As of 27 July 2026, most economists expected the Fed to hold rates steady at the conclusion of the meeting on 29 July, though CNBC reported the decision was a close call given persistent inflation pressures.

Higher for longer interest rates can weigh more heavily on high growth technology shares, because their valuations often depend on expectations of earnings further into the future. This is general market context, not a statement about any individual's circumstances.

What UK Investors Should Watch Next

UK focused investors should note that the FTSE 100's sector makeup has historically made it less exposed to AI driven swings than technology heavy indices such as the Nasdaq.

According to Siblis Research (2026), Financials account for the largest share of the FTSE 100, at just over a quarter of the index, followed by Consumer Staples at around 15%, with Information Technology representing a comparatively small slice. This composition has not made the FTSE 100 immune to global risk off sentiment, but it provided some relative insulation during earlier AI related selloffs in 2026, according to BBNTimes market reporting (27 June 2026). However, as the majority of FSTE 100 earnings are generated abroad, the index is still sensitive to USD currency conditions.

• Watch the Fed's 29 July decision and press conference for signals on the rate path.
• Watch whether the selloff in Samsung, SK Hynix and other AI linked names stabilises or extends.
• Note that broad UK indices such as the FTSE 100 have a different sector mix to the Nasdaq or Kospi, and have historically moved differently during AI driven volatility.

How to Approach Semiconductor and Tech Exposure Right Now

There is no single right way to respond to a sector specific selloff, and any decision depends on individual circumstances and risk tolerance.

Some investors use periods of volatility to review diversification across sectors and regions, rather than concentrating in a small number of technology names. Others use index products for broad market exposure rather than exposure to individual stocks. Whichever approach is taken, investments can fall as well as rise in value, and you are responsible for your own investment decisions.

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