A technical glitch at the New York Stock Exchange on Monday caused significant drops in several companies' stocks, including a nearly 100 percent drop in Berkshire Hathaway's Class A shares. 

Trading was halted for these stocks, as well as for Barrick Gold and NuScale Power, which also experienced substantial declines.

At 10:11 AM ET, the NYSE announced it was investigating a technical issue related to limit bands, mechanisms designed to pause trading due to extreme volatility.