IBM Reports Preliminary Q2 Miss on Mainframe Weakness

What happened

IBM issued a surprise preliminary earnings report for Q2, a week ahead of schedule. The company posted revenue of $17.2 billion (up 1% year-over-year) versus the FactSet consensus of $17.86 billion, and adjusted earnings of $2.93 per share compared to expectations of $3.01 per share. CEO Arvind Krishna attributed the miss primarily to the underperformance of the z17 mainframe launch and associated transaction processing software. Krishna explained that clients shifted capital spending toward servers, storage, and memory chips ahead of expected price increases, rather than purchasing mainframes. He also noted that numerous large deals failed to close on expected timelines, and that supply-chain headwinds and cybersecurity concerns distracted customers. Despite the mainframe weakness, IBM's distributed infrastructure business (Power servers and storage) saw record 37% year-over-year growth, and software revenue rose 5% driven by recently acquired HashiCorp and Confluent units. Consulting revenue grew only 1%, though the company noted strong GenAI-related consulting signings.

Why it matters

The preliminary miss marks IBM's first bottom-line shortfall in at least five years and signals execution challenges during a critical mainframe refresh cycle. Mainframes remain a core revenue driver for IBM, with the technology processing 87% of all financial transactions and serving 44 of the world's 50 largest banks. A weaker-than-expected mainframe cycle directly impacts IBM's infrastructure and associated software revenue streams. The customer shift toward memory and storage purchases reflects broader industry dynamics, as memory-chip shortages driven by AI demand have prompted price increases. While IBM's distributed infrastructure and software segments showed strength, the mainframe shortfall and failed deal closures raise concerns about near-term revenue visibility. Krishna's acknowledgment that the company did not adapt quickly enough suggests internal execution issues that may take time to resolve. The preliminary nature of the results also adds uncertainty, as final figures could differ when IBM reports full results.

Bigger picture

IBM's results highlight a broader trend in enterprise IT spending: companies are prioritizing scarce hardware components like memory, storage, and servers over software and services due to anticipated price increases. This shift is benefiting hardware and semiconductor companies-memory and chip stocks rallied following IBM's announcement-while pressuring software-as-a-service providers. Analysts noted that software stocks including ServiceNow, Workday, SAP, and Salesforce declined on concerns that IBM's experience could signal wider budget reallocations away from software. The dynamic reflects the intense demand for AI infrastructure, which is absorbing a larger share of corporate IT budgets. For IBM specifically, the company is navigating a transition from legacy mainframe-dependent revenue toward growth areas like hybrid cloud, AI, and consulting services. The weak mainframe cycle underscores the challenges of this transition, especially as competitors continue to gain share in cloud and AI markets. Upcoming earnings from other software and hardware companies will clarify whether IBM's experience is isolated or indicative of broader sector trends.

What to watch

Investors will focus on IBM's full second-quarter results on July 22 to see if final figures differ materially from the preliminary report. Key areas to monitor include mainframe sales trends in the second half of 2026, consulting deal pipelines (especially GenAI-related signings), and whether the customer spending shift toward hardware persists or reverses. Commentary on deal execution and sales cycle timelines will be critical to understanding whether IBM's challenges are temporary or structural. Broader industry signals will come from upcoming earnings reports from ServiceNow, SAP, Intel, and Texas Instruments, which will clarify whether hardware-versus-software budget trade-offs are affecting other companies. IBM's strategic response-whether through pricing adjustments, sales force changes, or accelerated investment in AI and hybrid cloud-will also shape investor confidence. Finally, memory and chip pricing trends will influence customer purchasing behavior and IBM's distributed infrastructure momentum.