IBM shares tumbled sharply in premarket trade after the company flagged weaker-than-expected second-quarter results, missing both profit and revenue estimates. Management attributed the shortfall to delayed deal closures and shifting client spending toward hardware ahead of price hikes, while cybersecurity concerns further weighed on performance during the quarter.

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.

July 14 : IBM said it had "faltered" in keeping pace with a shift in corporate spending from software to data-center infrastructure and would take a big earnings hit in the second…

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