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AI funding worries drag the Nasdaq down 2.5% this week while the Dow stays flat

Nasdaq is down 2.5% this week through Wednesday while the Dow is flat, as worries over debt-funded AI spending lead the selling. By CNBC Investing Club's figures it is still up 2.3% since Sept. 10 against a Dow down nearly 1%, so the week cut its lead from about 6 points to about 3.

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Illustration accompanying AI funding worries drag the Nasdaq down 2.5% this week while the Dow stays flat
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This week cut the Nasdaq's lead over the Dow The Nasdaq's lead over the Dow since the club's Sept. 10 meeting, before this week and at Wednesday's close, plus the Nasdaq's own gain.

The Nasdaq's lead over the Dow since Sept. 10 is about 3 points now, down from about 6 points before this week. The Nasdaq itself is up 2.3% since Sept. 10, through Wednesday's close.

This week cut the Nasdaq's lead over the Dow
FigureValueNoteClaim
Nasdaq lead over Dow since Sept. 10, now3 points, about19
Lead before this week6 points, about18
Nasdaq up since Sept. 102.3% to Wed. close6

What happened

  • Micron was the club's biggest loser week-to-date, and defensives such as Cardinal Health were among its biggest weekly winners.
  • The Fed's September rate hike, its first in three years, intensified concerns about banks, according to the club.
  • CrowdStrike rose 19.4% over the same window as concern about powerful AI models lifted cybersecurity stocks.
  • A hot inflation report arrived Thursday morning, after the Wednesday close that the Nasdaq figures run to.

Why it matters

  • contradiction The club's five-week leaders include AI-linked Meta and CrowdStrike, so the AI-debt selloff and the five-week scoreboard point in different directions.
  • constraint With another hike expected before year-end, the borrowing question stays open for AI spenders, and the club says higher rates raise bank funding costs and slow M&A and IPOs.
  • decision The club is buying weakness in TJX and staying cautious on CrowdStrike, so new money goes to the laggards and away from the biggest winner.

The week's drop is a 2.5% move on the Nasdaq (or rather, a 2.5% move through Wednesday's close, since Thursday's session is not in the figure) [1], and it lands on top of a gain. The index is 2.3% higher since the club's Sept. 10 meeting [6]. That puts it up roughly 4.9% on last Friday's close, assuming the two windows nest (1.023 divided by 0.975) [17]. The Dow was down nearly 1% over the longer stretch and has not moved this week [6][2], so the Nasdaq's lead over it was about 6 points and is now about 3 [18][19]. The week has taken back about 44% of that lead [20].

The club's five-week scoreboard sends a different signal from the week. Its biggest winners include Meta, up 14.4% since the Sept. 8 launch of its Muse agent [10], and CrowdStrike, up 19.4% [9]. Its biggest losers include Bank of New York, down 15.4%, and Goldman Sachs, down 13.8% [8]. The club ties the bank losses to the Fed's September hike [7]. Over that window the penalty fell on rate-sensitive financials while an AI spender was rewarded, and the club says the steady pace of AI releases is easing earlier concerns about whether Meta's billions in AI spending would generate sufficient returns [11]. In our view the market is sorting AI spenders by visible return on the spending. The evidence for that is thin: one source, describing its own holdings. Meta's rally could also reverse as fast as the slide in Micron, the club's biggest loser this week [3].

On the debt point itself the source is brief. It says expectations of at least one more Fed hike before year-end are not helping investors feel better about whether companies are borrowing too much to fund the AI buildout [4]. The post does not include borrowing figures, borrower names or the size of Thursday's inflation print. It says that report "and another terrible day for AI stocks were widening the gap between the haves and have-nots" [5].

We could be wrong in more than one way. If the AI selling carries on, a further decline of about 2.2% would erase the Nasdaq's entire 2.3% gain since Sept. 10 (1 divided by 1.023, less one) [21]. If the Dow starts falling with it, the cause is the rate path across the market and not AI financing, and the banks' losses of 13.8% to 15.4% already point that way [8]. If hike expectations fade, the AI borrowing worry loses the one catalyst the source names [4].

The club owns what it describes, a 32-stock portfolio [14], so its calls are positions. Of the Goldman decline it wrote: "We view the pullback as a buying opportunity" [13]. BNY reported better-than-expected fee growth on Thursday, according to the post [16].

What to watch

  • Friday's Nasdaq close: a further decline of about 2.2% would erase the index's 2.3% gain since Sept. 10.
  • Whether the Dow begins falling alongside the Nasdaq, which would put the cause on the rate path across the market and away from AI financing.
  • Details of Thursday's inflation print and any change in the odds of another Fed hike before year-end.

Clarity's read

What the record supports and how the coverage leans. The claims behind it follow.

Reality

Evidence45
Adoption
Insufficient
Hype gap+8
Incentives60
Confidence50
Why these scores

Claim ledger

Ranked by verification strength, evidence, and original report placement.

  1. [1]

    As of Wednesday's close, the Nasdaq was down 2.5% so far this week.

    Reported Supported Source: CNBC Investing ClubView cited source
  2. [2]

    The Dow Jones Industrial Average was flat since last Friday's close.

    Reported Supported Source: CNBC Investing ClubView cited source
  3. [3]

    Selling intensified on worries about the AI trade, making Micron the club's biggest loser week-to-date, while defensives such as Cardinal Health were among its biggest weekly winners.

    Reported Supported Source: CNBC Investing ClubView cited source

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Sources

1 independent publisher whose own reporting we read for this story.

  1. cnbc.com

    1 article · October 15, 2026

    Tale of two markets: Our 3 biggest winners and losers over the past five weeks

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