VOO drops premarket as Iran strike pushes oil up — what’s driving Vanguard’s S&P 500 ETF

VOO drops premarket as Iran strike pushes oil up — what’s driving Vanguard’s S&P 500 ETF

New York, March 2, 2026, 08:29 (EST)

Vanguard’s S&P 500 ETF (VOO) dropped about 1% before the bell Monday after the United States and Israel carried out a weekend strike on Iran, TipRanks reported. Oil surged nearly 8%. Investors shifted to safe-haven assets, pushing gold futures up 3.4% during the crisis.

VOO tracks the S&P 500, meaning its swings mirror the action in big U.S. stocks. When headlines send it lower, that usually points to investors bailing on risk—it’s not about Vanguard specifically.

Analysts say markets are still betting this conflict won’t escalate beyond current lines, though that outlook could unravel fast if disruptions to shipping or energy persist. Joerg Kraemer at Commerzbank called the market response “relatively moderate” so far, even with the Strait of Hormuz “effectively closed.” Over at Barclays, analysts warned that investors could be underestimating the fallout if efforts to contain the crisis collapse. Reuters

U.S. stock index futures slid hard before the open, falling more than 1% early Monday, Reuters reported. By 7:22 a.m. ET, Dow E-minis were off 1.17%. S&P 500 E-minis dropped 1.14%. Nasdaq 100 E-minis lost 1.46%. “Plenty of scope for more downside” exists if conflict hits oil and gas facilities, IG’s Chris Beauchamp warned. Wells Fargo’s Ohsung Kwon flagged a potential S&P 500 move to 6,000—nearly 13% lower from the prior close—if crude tops $100 a barrel. Reuters

VOO slipped to around $624 ahead of the bell, off its Friday finish at $631.04, according to Investing.com. The ETF’s trailing 12-month range sits between $442.80 and $641.81.

VOO cooled off after a strong run in March. TipRanks said the ETF tacked on 0.54% last week, pulling in $2.68 billion in net inflows over five sessions—total inflows minus redemptions.

Geopolitics only covers part of it. On February 27, TipRanks spotlighted VOO falling in premarket hours, with Nvidia’s post-earnings slide dragging the ETF and traders bracing for a key U.S. inflation report.

Investors haven’t shaken off trade policy worries, even before the most recent escalation. Back on Feb. 24, the U.S. imposed a provisional 10% tariff on imports worldwide. Now, the Trump administration aims to raise that figure to 15% under Section 122 of the Trade Act of 1974, Reuters reported.

Jitters have pushed some investors to redirect cash abroad. On Feb. 26, 24/7 Wall St. called out the Vanguard FTSE Developed Markets ETF (VEA) as an early beneficiary, highlighting its gains from an exodus out of U.S. stocks—and dubbing the move a “Sell-America” trade in their column. 24/7 Wall St.

Oil’s still the wild card here. Energy prices tumbling fast—with shipping bottlenecks clearing—could set off a sharp rebound in equities after the latest rout. But if crude hangs up high and inflation worries persist, investors may end up bracing for a longer stretch of tough financial conditions.

VOO is moving much like other S&P 500 trackers—think State Street’s SPDR S&P 500 ETF Trust and BlackRock’s iShares Core S&P 500 ETF. Vanguard’s not alone in feeling the heat this Monday. The pressure is market-wide. Traders are zeroed in on the broader landscape, not digging into earnings or fundamentals at the moment.

Michał Rogucki

Michał Rogucki is a senior markets reporter at TS2.tech, specializing in stocks, technology and macroeconomic developments. A graduate of Humboldt University of Berlin, he previously worked in investment research and market analysis before transitioning to financial journalism. He covers the trends and events that matter most to investors worldwide.

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