
The specific technical issue reported by the NYSE that caused Berkshire Hathaway's stock price to drop to $185 a share was related to a problem at the Consolidated Tape Association (CTA), which provides real-time information about quotes and trades on the exchange. The CTA oversees part of the Securities Information Processor (SIP) which consolidates all protected bid/ask quotes and trades into a single data stream. The CTA experienced problems with price banding which may have been related to a new software release on SIP. As a result, the CTA reverted to the previous version of the software. This issue led to the NYSE placing halts on certain trades, including Berkshire Hathaway's Class A stock. The technical issue has now been resolved, with all tickers trading as normal.

The technical error that affected Berkshire Hathaway's stock price lasted for around an hour and a half.

The NYSE took swift action to cancel or "bust" all the erroneous trades of Berkshire Hathaway stock that were executed at the incorrect price of $185 per share. The decision was made following a technical issue on the stock exchange which caused the global conglomerate's stock price to fall significantly from its previous closing price of over $620,000. The NYSE identified the issue as being related to a problem at the Consolidated Tape Association (CTA), which provides real-time information about quotes and trades on the exchange.