Gold futures surged above $4,300 a troy ounce as investors flocked to safe havens. Jeenah Moon/Reuters New York —

US stocks turned lower Thursday as jitters spread on Wall Street about credit market turmoil and regional banks’ exposures to bad loans.

The Dow fell 410 points, or 0.9%. The broader S&P 500 also dropped by 0.9%, and the tech-heavy Nasdaq Composite moved 0.8% lower.

Volatility has returned to Wall Street amid rising US-China trade tensions, concerns about historically expensive stocks and brewing trouble in the banking industry.

Regional bank shares tumbled Thursday after two lenders disclosed issues with borrowers, stoking nerves about the health of the credit market — and the potential for negative spillovers into the stock market and broader economy.

Zions Bancor

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