
The technical issue that caused the A-class shares of Warren Buffett's Berkshire Hathaway to appear to be down nearly 100% on the New York Stock Exchange was related to the price-bands published by the Consolidated Tape Association (CTA). The CTA is an organization used by major exchanges to jointly provide real-time stock quotes. The issue led to a halt in trading for Berkshire's A-class shares, as well as for Barrick Gold and Nuscale Power, which also experienced dramatic falls. The problem was later investigated by the NYSE, and normal trading resumed for the affected stocks.

The Consolidated Tape Association (CTA) was reportedly responsible for the technical issue that occurred on the New York Stock Exchange (NYSE) on Monday. The CTA is the organization used by major exchanges to jointly provide real-time stock quotes. The NYSE stated that the problems stemmed from the price-bands published by the CTA. The CTA had reported an earlier failure on Monday that led to a switch over to its disaster recovery center. This issue caused a number of stocks, including Berkshire Hathaway's A-class shares, Barrick Gold, and Nuscale Power, to appear to have dramatic falls, leading to a halt in trading.

It is unclear exactly how many stocks were affected by the technical issue on the NYSE. The issue caused trading to be halted in Berkshire Hathaway's A-class shares, as well as in Barrick Gold and Nuscale Power, which had also seen dramatic falls. The extent of the impact on other stocks is not mentioned in the provided information.