Three Forces That Drove a Wild Week for Stocks

CNBC reported Saturday that a brutal Friday stock market selloff erased what had been a record-setting week for equities. The S&P 500 and Nasdaq dropped 2.6% and 4.2% respectively in the final session. Both indexes ended the week mirroring those single-day losses. The S&P 500 snapped a nine-week winning streak.

Three distinct forces drove the chaos, according to CNBC’s analysis.

Chip Earnings Disappointed a Demanding Market

The week’s trouble began Wednesday when Palo Alto Networks shares fell 5.6% despite beating quarterly estimates. Management reaffirmed its long-term outlook rather than raising it. Investors who had pushed the stock to record highs ahead of results punished that caution.

CrowdStrike suffered a similar fate the following day. Strong earnings and forward guidance were not enough. The stock swung sharply before closing down nearly 4% on Thursday. It lost more than 8% for the full week.

The heaviest blow came from Broadcom. The semiconductor giant missed revenue expectations in its reported quarter and saw its stock fall 12.6% after the print. By week’s end the stock had lost 13.7%. Intel fared almost as badly, shedding 13.5% on the week despite an analyst argument that its CPU business is well-positioned for the era of agentic AI.

Nvidia’s Influence Remained Enormous

Nvidia CEO Jensen Huang commanded attention at the Computex conference in Taiwan on Monday. He announced Nvidia’s entry into the personal computer chip market using Arm Holdings’ architecture. Shares of Arm Holdings surged nearly 16% on the news before giving back ground to close the week down 3%.

Huang also publicly predicted that Marvell Technology would become the “next trillion-dollar company.” Marvell shares soared more than 28% in a single week from a starting market cap of roughly $200 billion. CNBC noted that some analysts found the rally unsettling given it was driven almost entirely by one executive’s comment. Nvidia itself ended the week down a comparatively modest 2.9%.

A Hot Jobs Report Crushed Rate-Cut Hopes

The Friday selloff that sealed the week’s losses had a clear catalyst. A stronger-than-expected U.S. jobs report pushed the 10-year Treasury yield above 4.5%. That move effectively killed near-term hopes for a Federal Reserve interest rate cut. Rate-sensitive technology stocks bore the brunt of the resulting rotation. Healthcare and financials absorbed some of the flows, with Eli Lilly gaining 2.4% and Wells Fargo rising 5.7% for the week.

The sequence, hot earnings expectations met with disappointment, a kingmaker CEO reshaping valuations with a single sentence, and a macro data point slamming the door on monetary easing, illustrates how quickly sentiment can reverse even in a strong bull market.

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