IBM's senior leadership team has sought to reassure investors during the company's Q2 2026 earnings call after its IBM Z mainframe offering saw a disappointing quarter.

The company had revenue of $17.2 billion for the quarter, representing a Year-on-Year (YoY) growth of just 1 percent, lower than analyst expectations and company's own previous predictions.

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The poor revenue growth was not a surprise, as IBM decided to release preliminary financial results to address the "performance shortfall" earlier this month.

Notably, the segment that suffered most was IBM Z, the company's mainframe offering. Falling under infrastructure - for which revenue was $3.8bn, down seven percent overall- IBM Z specifically saw revenue slowing by 42 percent.