A $69 billion wipeout and worst fall in nearly 40 years - IBM’s share price on Tuesday crashed 26% in trade in a sign of how the technology sector is rebalancing with the growth of artificial intelligence. Shares of IBM plunged 25% on Tuesday, with the company seeing a steeper one-day decline than it experienced during the 1987 "Black Monday" market crash.

IBM shares tumbled sharply in premarket trade after the company flagged weaker-than-expected second-quarter results, missing both profit and revenue estimates. Management…