AI-assisted research analysis by FutureKnowledge. Sources checked 18 October 2026. Market figures are closing or intraday levels as reported on the dates given. This is not investment advice.
The world’s chip stocks have just had their worst run since the 2008 financial crisis. The Philadelphia Semiconductor Index (SOX) fell for an eighth straight session on Friday, 16 October, and lost about 16% from its last up-day on 6 October. Hot US inflation, bond yields above 5% and doubts about how the artificial-intelligence building boom will be paid for hit at once. India, with very few listed chip companies, moved the other way.
What happened
On 16 October the SOX fell 3.83% to 11,137.29, and all 30 of its members ended lower, Investing.com reported. It was the index’s longest losing streak since October 2008. Broadcom, Micron, AMD, Intel, Lam Research and KLA each fell about 5%, and Arm Holdings fell about 7%. 24/7 Wall St.’s session data showed Nvidia, the sector’s biggest company, down only 1.43%.
The damage spread across markets. The Nasdaq Composite fell 2.1% and the S&P 500 fell 1.1% that day. Stocktwits estimated during the session that about $2 trillion of chip-sector market value had been lost over the streak. In Asia, Bloomberg reported that a Goldman Sachs basket of Asian AI hardware stocks fell 11% in the week, its steepest weekly drop since mid-July. Samsung Electro-Mechanics lost 23% and Taiwan’s Unimicron lost 14%.
Even after the fall, the SOX was still up about 57% for 2026, according to Reuters.
Why it happened
Inflation and interest rates
On 14 October the US Bureau of Labor Statistics said consumer prices rose 0.6% in September and 3.7% over the past year. Core inflation, which excludes food and energy, was 2.6%. Gasoline was up 34.2% from a year earlier. Fox Business noted that both annual rates were a tenth of a point above forecasts, and that CME FedWatch odds of a quarter-point Federal Reserve hike at the 27–28 October meeting rose from 22.1% to 41.5% in a day. 24/7 Wall St. reported the 10-year Treasury yield at 5.10% on 15 October, and Bloomberg said Brent crude had touched $110. Higher rates hurt richly valued growth stocks most.
Paying for the AI build-out
The second worry is financing. Reuters reported that CoreWeave, an AI cloud company with about $50 billion of debt, fell sharply during the week. Investing.com said its bond yields rose above 15%, a level usually linked to financial distress. Investors are asking whether borrowed money can keep funding data centres if rates stay high. Goldman Sachs expects five large “hyperscalers” to spend about $1.2 trillion next year, according to Reuters.
Competition in memory chips
Memory makers fell first. Investing.com reported on 13 October that SK Hynix fell 10% and Samsung Electronics fell 7.4%. Micron had dropped 3.9% the day before, after China’s ChangXin Memory Technologies (CXMT) said it had made progress on a denser chip design. Not every source sees a demand problem. Roundhill’s Dave Maza told Stocktwits that memory supply is reportedly sold out through 2027.
How it affects India and Indian businesses
India has almost no listed chip companies, which helped it this time. Arch Research calculated that in the week to 15 October, the iShares MSCI India ETF rose 5.25%, while a large chip ETF fell 7.98% and the broad emerging-markets ETF fell 3.28%. A rally in Indian IT services stocks also helped. Business Standard reported that the Sensex rose 3.11% and the Nifty 2.77% over the week, their second weekly gain in a row.
That does not settle the bigger question. Arch Research says foreign investors have pulled a record $32.7 billion out of Indian shares this year and were net sellers for a 15th straight session on 15 October. Taiwan and Korea together make up close to half of the emerging-markets ETF, against about 11% for India. If the AI-hardware trade keeps cooling, some money could look elsewhere in emerging markets. But India trades at about 18.6 times forward earnings, roughly 90% above the emerging-markets average, so it is not cheap.
The economic links run through three channels.
- Software services. Less hardware spending could leave more budget for software and services, which Indian IT firms depend on, but a rate-driven US slowdown would hurt them too.
- Electronics manufacturing. Indian assemblers and new chip-packaging projects buy memory at world prices. Tight memory supply raises their costs; a clear end to the boom would lower costs but might delay investment.
- Rates and the rupee. The same inflation and yield shock that hit chip stocks also makes it harder for India to borrow abroad and puts pressure on the rupee, a risk Business Standard listed among the main concerns for the coming week.
Who is more or less exposed
- More exposed: heavily indebted AI builders, chip-equipment makers whose orders can be delayed fast, memory suppliers facing Chinese competition, and chip-heavy markets such as Taiwan and South Korea.
- Less exposed: markets and sectors with little hardware, including much of India’s listed market. Reuters said US healthcare and consumer staples stocks rose during the week.
- Mixed: Indian electronics assemblers, which gain from cheaper chips but lose if regional AI investment slows.
Scenarios to watch
The table below shows conditional scenarios, not predictions.
| If… | Then chip stocks could… | Possible effect for India |
|---|---|---|
| Hyperscaler results confirm or raise spending plans | Rebound sharply, as SpotGamma warned may happen | Money moves back to Taiwan and Korea; less relief for Indian flows |
| The Fed raises rates on 28 October and yields stay above 5% | Stay under pressure, led by highly indebted AI builders | Tighter global money, rupee pressure, but a relative rotation toward non-tech markets |
| Oil eases and inflation cools | Steady without a fast return to their highs | Lower import bill and inflation, support for Indian shares more widely |
| Credit stress spreads beyond CoreWeave | Fall further as funding for AI projects dries up | A broad risk-off move that could hit India despite its small chip exposure |
What to watch next
- Quarterly results from Meta, Lam Research and Texas Instruments next week, which Reuters flagged, especially any comments on capital spending.
- The Federal Reserve’s decision on 28 October and the path of the 10-year Treasury yield.
- CoreWeave’s bond prices as a gauge of credit appetite for AI infrastructure.
- Foreign investor flows into India once markets reopen after the Dussehra holiday on 20 October.
Bottom line
The eight-day slide is a repricing of the AI hardware trade under higher rates and closer scrutiny of debt, not proof that AI demand has collapsed; the sector is still far ahead for the year. For India, having few chip stocks was a short-term advantage. The lasting effects will come through rates, oil and foreign flows.
Method: this article compares reporting from Investing.com, Reuters and Bloomberg (both via Investing.com), 24/7 Wall St., Stocktwits, Fox Business, Arch Research and Business Standard with the US Bureau of Labor Statistics’ September 2026 CPI release. Sources measure the slide over different periods: about 16% since 6 October (Investing.com, Bloomberg) versus about 12% month to date (Reuters); we use 16% for the streak. Stocktwits’ $2 trillion figure was intraday. Scenarios are FutureKnowledge analysis. Corrections: see our corrections page.