NYSE Fixes Issue That Showed 99% Drops, Triggered Trading Halts

  • NYSE cancels Berkshire trades at 99% discount to Friday close
  • CTA says issue may have been related to new software release
Glitch at NYSE Leads to Some Wild Stock Swings
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A glitch during a software update early Monday led the New York Stock Exchange to erroneously halt trading on about 40 stocks and display odd trades showing a 99% drop in companies including Warren Buffett’s Berkshire Hathaway Inc.

The disruption — the third episode to hit US markets in the past week — was resolved after roughly 45 minutes when the Consolidated Tape Association, whose systems are operated by a NYSE subsidiary, reverted to a backup data center running a different software version.