Just minutes after the stock market opened, the S&P 500 fell 7% from its previous close—triggering a circuit breaker that halted trading across the entire stock market for 15 minutes.

as the S&P 500 slipped toward the threshold that would trigger an initial “circuit breaker.” The S&P 500 SPX was down 4.6% near 4,200 in recent trade, after hitting a session low at 5,115.27 ...

Turkey's Borsa Istanbul suspended trading on its equity and derivatives markets within minutes of opening after market-wide circuit breakers stopped the slide in the main index at 7%. The country ...