Mark Zuckerberg lost nearly $18 billion as the Dow crumbled 1,679 points. But a few billionaires added to their fortunes. - MarketWatch
1. Meta's CEO lost $17.9 billion amid market meltdown due to tariffs. 2. Meta shares experienced an 8.9% decline, the worst one-day loss in a year. 3. Overall, $3.1 trillion was wiped from the U.S. market capitalization. 4. Tech stocks were hit hardest, affecting Meta's market position. 5. Zuckerberg remains the third-largest billionaire with $189 billion in net worth.