
The New York Stock Exchange experienced a technical issue that affected the main electronic stock price publisher, leading to large fluctuations in the prices displayed for certain stocks. The issue involved "limit up, limit down bands," which are designed to limit volatility5. This caused the NYSE to incorrectly show so-called Class A shares of Berkshire Hathaway down 99% from their price of about $620,000 a share, along with other stocks such as AMC Entertainment, Chipotle, and GameStop. Trading was halted for the affected stocks, and normal trading resumed later in the morning after the issue was resolved.

The NYSE announced that normal trading had resumed around 11 a.m. ET after resolving the technical issue that led to large fluctuations in the prices displayed for certain stocks.

The system at the NYSE that was specifically mentioned as being affected by the technical issue was the main electronic stock price publisher.