Dow Plunges 800 Points as $900 Billion Vanishes From U.S. Stocks at Open

U.S. stocks dropped sharply Monday morning, wiping out more than $900 billion in market value within minutes of the opening bell as oil prices surged and geopolitical tensions rattled investors.

The sudden selloff reflects growing concern that rising energy costs could reignite inflation and derail expectations for interest-rate cuts later this year.

Acco…