Ten companies took 41% of every dollar of U.S. venture capital deployed in 2025 — $81.3 billion out of $197.2 billion — up 75% from the share the top 10 captured a year earlier, according to Pitchbook data reported by SaaStr Venture Has Never Been More Concentrated: 40%+ of VC $$$ Going to Just 10 Deals | SaaStrAI (saastr.com). Eight of those ten companies were AI-focused, and OpenAI's $40 billion round alone was, per Pitchbook, the largest single financing event in venture history Venture Has Never Been More Concentrated: 40%+ of VC $$$ Going to Just 10 Deals | SaaStrAI (saastr.com). This is concentration at the company level, not among a defined bloc of enterprise-software-specialist funds — no source establishes that a cohort of 40 such firms controls 60% of anything, and the research here does not support that framing.

What the record does show is concentration compounding from two directions at once: fewer dollars chasing fewer winners, and fewer funds doing the chasing. New U.S. venture fund formation fell 46% in 2024 alone and 68% cumulatively from 2021 to 2024, according to Carta's annual review of its platform data VC Dollars Grow More Concentrated Amid Fewer Deals ... (carta.com). Total cash raised from limited partners by U.S. venture funds fell 22% in 2024 and is down nearly 60% from two years earlier, even as the number of active investors making at least one new investment dropped 26% over three years VC Dollars Grow More Concentrated Amid Fewer Deals ... (carta.com). Carta found that in 2024 a group of just nine firms accounted for nearly half of all capital raised by U.S. funds VC Dollars Grow More Concentrated Amid Fewer Deals ... (carta.com). Andreessen Horowitz's $15 billion raise in January 2026 was, on its own, equal to more than 18% of all VC commitments raised across roughly 540 U.S. funds the prior year, according to an analysis published by Flowcap What VC concentration means for growth-stage companies? (flowcap.com).

Where enterprise software sits inside this

Enterprise software is not a bystander to the mega-round story — it is one of its largest beneficiaries. Silicon Valley Bank's 2026 report on the sector found that 65% of U.S. enterprise-software venture capital went to AI startups in 2025, and counted 356 U.S. VC-backed enterprise-software unicorns, with more than 75 new ones added since 2025 Enterprise Software Report 2026: AI & VC trends (svb.com). SVB also found that 46% of enterprise-software M&A deals in the period had a U.S. VC-backed company as the buyer, a sign that venture-funded firms are themselves becoming the consolidators Enterprise Software Report 2026: AI & VC trends (svb.com). Separately, more than a third of existing enterprise-software unicorns are growing less than 10% year over year, which SVB's report labels "zombiecorns" — companies still holding capital raised at peak valuations with little growth to show for it Enterprise Software Report 2026: AI & VC trends (svb.com).

The AI share of enterprise-software VC is a subset of a broader pattern across cloud and software generally. Accel's Euroscape report, covered by CNBC, found generative-AI startups captured 40% of the $79.2 billion raised by cloud companies across the U.S., Europe and Israel, and that the top six generative-AI companies in that pool accounted for roughly two-thirds of all genAI funding Generative AI startups get 40% of all VC investment in cloud - CNBC. Accel partner Philippe Botteri told CNBC that AI "is sucking the air out of the room" for cloud investing generally Generative AI startups get 40% of all VC investment in cloud - CNBC. Flowcap's July 2026 analysis put a number on the shift over a decade: AI-related deals were about 10% of U.S. VC deal value in 2015 and reached 65.6% by 2025 What VC concentration means for growth-stage companies? (flowcap.com).

The capital that isn't counted as venture at all

A separate mechanism is pulling enterprise-software capital outside the venture rounds these figures measure. CNBC reported that venture-style firms are now buying legacy, non-AI-native companies outright and rebuilding them around AI rather than selling those companies software — General Catalyst and Trian's $7.6 billion take-private of Janus Henderson in December, and Long Lake Management's $6.3 billion take-private of American Express Global Business Travel at a 65% premium in May Silicon Valley's new buyout playbook is hitting Wall Street - CNBC. General Catalyst managing director Madhu Namburi calls the model "service as software" Silicon Valley's new buyout playbook is hitting Wall Street - CNBC. Vista Equity Partners founder Robert Smith told CNBC that private, non-public enterprise-software companies converting to agentic AI are "the next phase" of the AI trade, distinct from the hyperscaler infrastructure names dominating public markets Vista Equity says it's reinventing the way companies use AI - CNBC. Neither of these deal types shows up in the venture fundraising or deal-value totals above; they are private-equity structures competing for the same targets.

Flowcap's own data complicates a single-concentration story: sub-$100 million deal count fell to a multi-year low even as total deal value recovered toward the 2021 peak, and the firm's analysts flag 222 of 857 tracked unicorns as having slipped back below $1 billion in valuation despite headline totals looking strong What VC concentration means for growth-stage companies? (flowcap.com). Government programs aimed at the opposite end — Treasury's $32 million SSBCI award to ten women- and minority-led North Carolina venture firms, meant to catalyze $60 million more in private capital — operate at a scale that does not visibly move any of these national totals Vice President Harris, Treasury Department Announce New Funding for Historically… (home.treasury.gov). What remains unmeasured, in any source reviewed here, is what share of enterprise-software capital specifically is now flowing through take-private and rollup vehicles rather than primary venture rounds at all.