Workday Inc. shares rose 18% on Thursday after reports surfaced that Silver Lake Partners is evaluating a potential acquisition of the enterprise HR and finance software company, which now carries a market capitalization near $51 billion. The single-day move represents the largest gain in Workday's public history and briefly added $7.8 billion to its equity value before settling at a $9.2 billion increase by close.
The interest from Silver Lake — one of three firms globally with demonstrated appetite for software deals above $40 billion — arrives as Workday trades at 6.2x forward revenue, down from 12.4x in early 2024. The company reported $8.1 billion in trailing revenue with 22% gross margins on subscription contracts, but growth decelerated to 14% year-over-year in its most recent quarter, the slowest pace since going public in 2012. Workday's customer base includes 10,200 enterprise accounts, with 68% of Fortune 500 companies deployed on its platform. The software has sticky characteristics — average contract length is 4.2 years and logo churn runs below 3% annually — but new bookings growth turned negative in Q2 2026 for the first time in company history.
This is the first $50 billion-plus software takeout discussion to surface since Vista Equity's $16.5 billion privatization of Avalara in late 2024. Private equity has remained absent from large-cap SaaS M&A for 26 months, constrained by financing costs that only turned favorable in Q1 2026 when leveraged loan spreads compressed below 375 basis points. Silver Lake has $102 billion in dry powder across its last three flagship funds and participated in the $34 billion Dell privatization in 2013, establishing precedent for consortium structures at this scale. A Workday transaction would likely require co-investors — Thoma Bravo, Vista Equity, or sovereign vehicles in Abu Dhabi and Singapore represent the narrow list of counterparties capable of writing $8 billion to $12 billion equity checks.
The strategic calculus hinges on margin expansion potential that public markets have stopped rewarding. Workday operates at 19% EBITDA margins, roughly 1,100 basis points below comparable private SaaS assets after cost optimization. Silver Lake's portfolio companies average 34% EBITDA margins post-acquisition, driven by G&A reduction, sales force re-segmentation, and infrastructure migration to reserved cloud capacity. Workday's $2.1 billion annual R&D spend — 26% of revenue — offers a secondary lever, as the company maintains overlapping development workstreams in AI features that could be consolidated without degrading product velocity. At 28% EBITDA margins, Workday would generate $2.3 billion in cash flow on current revenue, supporting debt service on a $32 billion financing package at prevailing rates.
Allocators and operators should monitor three developments in the next 45 to 60 days. First, whether Workday's board forms a special committee, which would surface in an 8-K filing and confirm the company is entertaining formal proposals rather than dismissing opportunistic interest. Second, debt commitment letters from Barclays, Goldman Sachs, or JPMorgan — the three banks that underwrote $89 billion in software LBOs between 2019 and 2024 — which would indicate Silver Lake has moved past preliminary diligence. Third, public filings from Thoma Bravo or Vista Equity regarding new fund closes, as neither has sufficient uncalled capital in existing vehicles to participate at this scale without raising incremental commitments.
If this transaction closes in Q4 2026 or Q1 2027, it will reset the upper boundary for software buyouts and likely unlock $140 billion to $180 billion in deferred large-cap SaaS M&A that has been pending since valuations compressed in 2024.