Hg Capital's $6.4 Billion Bet on OneStream, Explained

Private equity firm Hg Capital is acquiring OneStream, an enterprise performance management (EPM) software vendor, for $6.4 billion — one of the largest enterprise software acquisitions of 2026, and a useful window into what private equity is currently willing to pay for.

Why EPM Software, Specifically

OneStream competes in financial planning, consolidation, and reporting — the unglamorous but mission-critical software finance teams can't operate without. That's exactly the profile private equity rollup specialists favour right now: sticky, recurring-revenue software with high switching costs and a clear AI upgrade path, not a growth-at-all-costs consumer app.

The Bigger Pattern

• Twenty announced M&A deals worth roughly $600 billion were still waiting to close industry-wide as of August 2026 — a large, active pipeline, not an isolated transaction
• Depressed SaaS valuation multiples are colliding with large amounts of private equity capital looking for a home — a combination that favours buyers, not sellers, in this specific window
• Firms like Thoma Bravo, Vista, and Silver Lake are actively circling exactly this profile of software: profitable, recurring revenue, with a credible AI narrative

What to Do If a Vendor You Depend On Gets Acquired

A private equity acquisition doesn't automatically mean bad news for customers — but it often means a renewed focus on margin, which can show up as pricing changes, support-tier restructuring, or feature-development slowdowns on lower-tier plans. If OneStream (or any vendor you rely on) goes through an acquisition, it's worth proactively confirming your contract terms and roadmap commitments rather than waiting to be surprised.