IBM Stock Drops 25% on Q2 Warning and Z Business Shortfall

SentiSense · Published Jul 17, 2026, 5:58 PM ET · Updated Jul 18, 2026, 11:31 AM ET

IBM shares plummeted 25% on July 14, 2026, after the company revealed severe underperformance in Q2 2026 results. The mainframe business, IBM Z, declined 7% despite previous revenue growth assurances. An investigation into potential securities law violations has been launched.

IBM stock saw a dramatic 25% drop on July 14, 2026, wiping out $68 billion in market value. The severe underperformance was tied to the IBM Z mainframe business, which showed a 7% decline in revenue despite earlier promises of 5%+ revenue growth.

This shortfall led to investor concerns, and an investigation by Hagens Berman is now underway to explore potential securities law violations regarding IBM management's knowledge of deal closures risks.

The impact of the drop extends beyond the company's immediate financial performance. Analysts are reevaluating IBM's market prospects and downgrades have been seen.