The New York Stock Exchange during morning trading on January 19, 2023. (Credit: Michael M. Santiago/Getty Images)
(CNN) --
The listing of dozens of companies on the New York Stock Exchange (NYSE) was briefly halted Tuesday morning, shortly after the market opened.
Major companies affected include Verizon, McDonald's, Morgan Stanley, AT&T and Nike, according to the New York Stock Exchange.
Many of those stocks made big moves within minutes of the morning trading session, sending companies like Wells Fargo and Morgan Stanley into a tailspin.
Morgan Stanley briefly plunged to $84.93, after ending at $97.13 on Monday, before recovering.
McDonald's and Walmart also fell more than 12% before trading was halted.
These declines may have caused volatility interruptions in the stock market.
The New York Stock Exchange, and most other major exchanges, mandate automatic stops for stocks that rise and fall sharply.
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The affected companies have already resumed trading, according to a NYSE status report at 9:50 am ET, which said "all systems are currently operational."
NYSE officials did not immediately respond to phone calls and emails from CNN Business.
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