Stocks retreated Tuesday as an August selloff was reignited by a downgrade of the banking sector by credit rating agency Moody's.
The Dow Jones Industrial Average was down 158.64 points, or 0.45%, to close at 35,314.49. At session lows, the index dropped about 465 points.
The S&P 500 dipped 0.42% to end at 4,499.38, bringing the broad index's month-to-date loss to almost 2%. The Nasdaq Composite pulled back by 0.79% to 13,884.32, pulling its loss in August down to 3.2%.
Tuesday was the fifth negative day out of six sessions for both the S&P 500 and the Nasdaq. At session lows, both were down more than 1%. Though all three indexes closed off their lowest respective points in the session, none ever broke into positive territory.
Banks fell broadly after Moody's downgraded the credit rating on several regional banks, including M&T Bank and Pinnacle Financial, citing deposit risk, a potential recession and struggling commercial real estate portfolios. The credit agency also placed Bank of N.Y. Mellon and State Street on review for a downgrade.
Goldman Sachs and JPMorgan Chase slid around 2.1% and 0.6%, respectively, while the SPDR S&P Bank ETF (KBE) dropped 1.3%.
The SPDR S&P Regional Banking ETF (KRE) also lost 1.3%. The regional bank ETF lost 28% in March amid the failure of Silicon Valley Bank. Meanwhile, M&T Bank finished nearly 1.5% lower.
"It's not optional to have good credit ratings, because they need faith," said Jay Hatfield, CEO of Infrastructure Capital Advisors, of regional banks. "Any sort of reduction of faith in the regional banking system is really terrible for market sentiment."
Traders also parsed through the latest batch of earnings. UPS shares slipped 0.9% after the delivery giant reported weaker-than-expected revenue for the second quarter. The company also lowered its full-year revenue outlook.
The corporate earnings season has so far been better-than-anticipated. With 89% of S&P 500 stocks done reporting quarterly results, about four-fifths of them have beaten Wall Street's expectations, according to FactSet. But it appears a lot of those results were already priced into the market, given the recent pullback.