IBM shares plummet 25% on weak preliminary earnings - SiliconANGLE

CEO Arvind Krishna writes letter to investors to explain "performance shortfall"

Shares of IBM are sliding before the market open on Tuesday as the company provided preliminary second-quarter results that are below Wall Street’s expectations.

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

By Hannah Pedone and Tomi Kilgore