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US EQUITIES4 min read

US stocks rebound as dip buyers return to AI and chips

The Nasdaq 100 rose 1.9% and a gauge of chip giants gained 3.5% on Monday, after the Nasdaq fell 4.5% last week.

EquitiesJuniorTrader desk · 8 sources

  • US stocks rebounded on 19 October as chipmakers gained 3.5% and the Nasdaq 100 rose 1.9%, after the Nasdaq lost 4.5% last week.

  • Dip buyers are betting the AI investment boom keeps supporting earnings, after Friday’s sell-off on doubts over AI infrastructure spending.

  • Meta reports earnings this week, which Bloomberg calls a fresh proving ground for AI confidence.

The trader’s angle

AI and chip stocks now drive the direction of US indices. A bounce after a sharp sell-off tests whether buyers still trust the earnings story, and Meta’s results this week are the next check.

The chart

Look at the size of last week’s drop against the year’s trend, and whether Monday’s bounce recovers much of it.

Nasdaq 100

Nasdaq weekly fall

4.5%

downlast week

Ended a four-week winning streak, per CNBC.

Chip giants gauge

+3.5%

upMonday, per Bloomberg

The sharpest part of the rebound, in the sector that led last week’s losses.

Semiconductor ETF

-12%

uplast week; +3% Monday

The iShares Semiconductor ETF rebounded nearly 3% after its 12% decline, per HDFC Sky.

S&P 500 midday

7,725

up+0.85% at 11:34 ET

An intraday level, not a close. The S&P lost nearly 2% last week, its biggest weekly fall since late June.

Buying the dip means purchasing an asset after a fall, on the view that the drop is temporary and the longer-term story is intact. It works when the original reason for owning the asset still holds. It fails when the fall reflects a real change in outlook.

In this story the reason for owning AI and chip stocks is that heavy -supporting AI investment will continue. Last week’s sell-off questioned how long that spending can be sustained, so the rebound is a bet on the earnings side of that argument.

What happened

US stocks rebounded on Monday 19 October as dip buyers returned to AI and chip names. Bloomberg reported that a gauge of chip giants rose 3.5% and the Nasdaq 100 gained 1.9%.

At 11:34 ET the S&P 500 was up 0.85% at 7,725 and the Nasdaq Composite up 1.67% at 26,576, according to the Motley Fool. The Dow was up just 0.15% at 52,094.

Individual moves were large. Sandisk rose 7.4% and Micron 4.7% on better memory-chip sentiment. Intel gained after a JPMorgan upgrade, and Amazon rose after Morgan Stanley raised its price target.

Why it happened

Last week was rough. The S&P 500 lost nearly 2%, its biggest weekly decline since late June, and the Nasdaq fell 4.5%, ending a four-week winning streak. On Friday 16 October the Nasdaq fell 2.1% on fears about how sustainable AI infrastructure spending is.

The Motley Fool also linked part of the sell-off to concerns about CoreWeave’s debt . On Monday, Goldman Sachs recommended buying CoreWeave after its recent plunge, and the shares rose 2.8%.

Bloomberg described the bounce as a bet that the AI investment boom will keep supporting solid earnings.

How it ripples through markets

From AI spending doubts to a rebound

  1. 1

    Doubts about AI infrastructure spending

    downNasdaq

    Investors question how long companies can keep spending heavily on AI hardware, and whether returns justify it.

  2. 2

    Chip stocks lead the sell-off

    downSemiconductor stocks

    Chipmakers sell the hardware, so doubts about spending hit their expected earnings first. The semiconductor fell 12% last week.

  3. 3

    Valuations look lower to some buyers

    After large falls, some investors judge that the earnings case is intact and the price is more attractive. Analyst upgrades and buy calls reinforce this.

  4. 4

    Dip buyers return on Monday

    upNasdaq 100

    Buying lifts chip stocks, and because they weigh heavily in the Nasdaq 100, the index rises with them.

  5. 5

    Earnings become the test

    Results from Meta and others will show whether AI spending still supports profits. Strong results would likely extend the rebound; weak ones would likely revive the doubts.

Why it matters for traders

Chip and AI stocks carry heavy weight in the Nasdaq, so their swings drive the index. A 12% weekly fall in the semiconductor ETF followed by a roughly 3% bounce recovers only a small part of the loss.

Analyst calls helped lift individual names, which suggests the buying was selective rather than a market-wide return of appetite. The small gain in the Dow compared with the Nasdaq points the same way.

Outside the US, the WSJ headline said European stocks and French bonds slumped. The Motley Fool attributed European pressure to violent protests in France and Italy. No levels were found, so treat the global tone as mixed.

What to watch

The next test is earnings. Meta reports this week, and Bloomberg calls it a fresh proving ground for AI confidence. Tesla is also due, and MarketWatch says Nvidia is preparing for a European conference.

Jim Cramer of CNBC’s Investing Club thinks the chip rebound may have more room to run. That is one view. Watch whether buyers hold gains in chips through the week, and whether CoreWeave’s funding concerns resurface.

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Sources

Written by the JuniorTrader desk with AI assistance, from the reports above. Intraday levels are snapshots and may have moved since. Not investment advice.

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