Stock Market Rebound on Oil Slide; Nvidia Sinks 4% on Probe

U.S. stocks jumped more than 2% in a single session on November 9, 2026 (ET). Based on Yahoo Finance closing data, the S&P 500 rose 2.35% to 7,549.94, the Nasdaq Composite gained 2.74% to 25,253.14 and the Dow Jones Industrial Average added 2.15% to 52,389.75. The U.S. stock market rebound was driven by a more than 4% drop in oil prices and by investors buying back tech shares after last week's AI selloff. Nvidia went the other way, falling 4.27% after its board opened an independent investigation tied to reports about CEO Jensen Huang.

U.S. stock market rebound: cheaper oil meets dip buying

Two forces lined up on the same day. Falling oil eased inflation worries, and investors stepped back into tech and chip stocks that had been marked down during last week's AI selloff. Large caps and small caps rose together.

Oil fell on Iran comments. President Donald Trump said on November 8 that further attacks on Iran were unlikely while talks to end the conflict make progress, according to CNBC. December WTI crude settled the day at $87.06 a barrel, down 4.15% from the prior session, based on Yahoo Finance data. Energy has been a major driver of U.S. inflation lately. According to the Bureau of Labor Statistics (BLS), energy prices in the September Consumer Price Index (CPI) were up 20.4% from a year earlier and gasoline was up 34.2%. Cheaper fuel means less inflation pressure and potentially less pressure on interest rates, and that logic appears to have pulled buyers into equities.

Dip buyers came back after the sharp AI selloff on November 5. TheStreet said strength in Asian chip stocks also helped the mood. The Philadelphia Semiconductor Index (SOX) climbed 6.85% to 10,033.93. The Russell 2000, an index of 2,000 smaller U.S. companies, rose 3.21%. Small caps outpacing large caps suggests the buying was not limited to a handful of megacap tech names. We covered the drop itself in why the Nasdaq fell 5.5% after the Democrats' midterm sweep.

Source: Yahoo Finance quotes (Nov 6 and Nov 9, 2026, ET). VIX is the value shown right after the close.

The standout exception was Nvidia (Nasdaq: NVDA).

Company snapshot

Nvidia falls 4%: what the board's investigation does and doesn't say

Nvidia's board said on Sunday, November 8, that it is launching an independent investigation following reports that Huang had been the target of a foreign intelligence effort. According to Yahoo Finance, the board said it has no reason to believe national security or company secrets were compromised. Huang supports the review and will cooperate, and a company spokesperson said he will continue to lead Nvidia as CEO without interruption.

It helps to separate what was reported from what has been established. The same Yahoo Finance article says the probe follows an October New York Times report linking Huang to a businessperson suspected of ties to a Chinese intelligence operation. Yahoo Finance said Huang acknowledged in an employee memo on November 8 that he had a close relationship with that person. The allegations about a foreign intelligence operation have not been verified. Three Republican House committee chairs asked Huang on November 5 to attend a closed-door briefing on November 18; Bernstein viewed it as a request rather than a subpoena, Yahoo Finance reported.

The stock's path showed how unsure investors were. Nvidia sank as low as $170.24 during the session, about 8.8% below its prior close, before finishing at $178.67, based on Yahoo Finance data. Volume reached about 446 million shares, roughly 2.5 times the prior session's 180 million.

AI cloud providers that rent out Nvidia chips actually rose. According to 24/7 Wall St., CoreWeave (Nasdaq: CRWV) gained 6% intraday on a multiyear cloud deal with British self-driving startup Wayve (private), and Nebius (Nasdaq: NBIS) jumped 9% ahead of its earnings. Wayve will train its driving models on CoreWeave's Nvidia Blackwell-based infrastructure; financial terms were not disclosed. With the chip index up 6.85% while its biggest name fell, the market appears to have priced management and governance risk rather than weaker demand for AI chips.

Will the rally last? Three tests for a trend reversal

One strong day does not make a trend reversal. The rally was broad, but bond yields did not come down with it, the oil decline rests on hopes for diplomacy, and the big AI earnings tests are still ahead.

Start with rates. Even as oil fell more than 4%, the 10-year Treasury yield edged up 0.5 basis points to 4.864%. That suggests the bond market is not yet convinced inflation is under control. The first checkpoint is the October CPI report, released on November 10 at 8:30 a.m. ET. According to Yahoo Finance, economists surveyed by Bloomberg expect a 0.3% monthly rise (September: 0.6%), with core CPI up 0.2% (September: 0.3%). Yahoo Finance also noted that because October 2025 data were not fully published during the government shutdown, the year-over-year figure may not be complete this time. Our CPI week calendar lays out the schedule and scenarios.

Oil could bounce back. CNBC reported that both the U.S. and Iran described attacks on ships in or near the Strait of Hormuz, and a senior Iranian security official said Tehran won't negotiate unless seven conditions from a June interim agreement are met. If hopes for a deal fade, Monday's oil drop could reverse.

Then there are AI earnings. CoreWeave hosts its third-quarter call on November 10 at 5 p.m. ET. We looked at how much debt the company has built up in CoreWeave's earnings preview and its 16% bond yields. Nvidia reports on November 17 at 5 p.m. ET.

In Gist 7's view, the encouraging sign is breadth. Small caps rising more than 3% and the VIX falling to around 20 point to fear easing. Yet the fact that yields did not budge suggests the rally rests on the hope that inflation may cool, not on proof that it has. Whether this week's CPI and CoreWeave numbers confirm that hope will likely decide if this becomes a trend reversal.

Market impact map

Little direct impact: 2-year Treasury, 10-year Treasury (4.864%, +0.5 bp), bitcoin

• Gas prices: lower crude prices usually reach the pump with a lag of a few weeks.
• Travel and overseas spending: a weaker dollar makes foreign currencies a bit pricier for Americans, but the CPI result could flip the dollar's direction within a day.
• Retirement accounts and funds: portfolios heavy in U.S. tech may see bigger swings around this week's earnings and data.

Market reactions can vary with other factors, and this table is not a basis for investment decisions.

Timing: indexes, VIX, WTI and Treasury yields are Nov 9, 2026 closing levels (ET, Yahoo Finance). The dollar index move from 102.30 to 101.68 is as of 3:57 p.m. ET, and USD/KRW around 1,340 is an offshore quote near 4 p.m. ET, both before the final close. Gold at about $4,151 an ounce (+1.9%) is the Yahoo Finance quote shown at 4 p.m. ET.

What to watch next

Dates come from the Bureau of Labor Statistics, CoreWeave and Nvidia company notices, and the Federal Reserve calendar. The FOMC time is the Fed's usual 2 p.m. ET statement release.