SignalbaseUpdated 28 Sept 2026

Top recently funded startups in United States, week of 2025-10-06

United States logged 58 verified funding rounds in the week ending 05 Oct 2025, totalling ≈$50.0B. Entertainment Arts Inc. anchors the week with a ≈$36.0B private equity buyout in Media and Information Services (B2B). Software Development was the busiest sector with 5 deals.

Week of 2025-10-06United States58 deals≈$50.0B raised

Country	United States
Deals this week	58
Total raised	≈$50.0B
Top sector	Software Development (5)
Most common round	Seed (13)
Most active investor	Y Combinator (6 deals)
Sources tracked	183

The biggest 5 deals this week

#	Company	Amount	Round	Sector	Announced
1	Entertainment Arts Inc.	$36.0B	private equity buyout	Media and Information Services (B2B)	29 Sept 2025
2	OpenAI	$6.6B	secondary / employee share sale	Research Services	01 Oct 2025
3	CEREBRA	$1.1B	Series G	Hospitals and Health Care	30 Sept 2025
4	Base Power Company	$1.0B	Series C	Energy Technology	01 Oct 2025
5	ŌURA	$900.0M	Series E	Hospitals and Health Care	01 Oct 2025

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53 more funding rounds this week

Fermi America, NANO Nuclear Energy Inc. (NASDAQ: NNE), Redevco, Otis Elevator Co., Eclipse, Cerebras, Flying Tulip, OpenEvidence and 45 more closed rounds this week. Sign up to see amounts, round types, sectors and investor lists.

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Closer look at the top 3

Entertainment Arts Inc.

Announced 29 Sept 2025

$36.0B · private equity buyout · Media and Information Services (B2B) · United States

“EA Announces Agreement to be Acquired by PIF, Silver Lake, and Affinity Partners for $55 Billion Home Portfolio People Purpose Focus And Commitment In The News Connect With Us LP Login Dataroom In the news PRESS RELEASE EA Announces Agreement to be Acquired by PIF, Silver Lake, and Affinity Partners for $55 Billion September 29, 2025 Accelerates EA”
From the announcement · 29 Sept 2025

Investors: PIF (lead), Silver Lake (lead), Affinity Partners (lead).

OpenAI

Announced 01 Oct 2025

$6.6B · secondary / employee share sale · Research Services · United States

OpenAI is an AI research and deployment company dedicated to ensuring that general-purpose artificial intelligence benefits all of humanity.

“OpenAI is an artificial intelligence research and deployment company whose mission is to ensure that artificial general intelligence benefits all of humanity.”
From the announcement · 01 Oct 2025

Most active investors this week

#	Investor	Deals
1	Y Combinator	6
2	Bessemer Venture Partners	4
3	8VC	3
4	Accel	3
5	Fidelity Management & Research Company	3
6	Tiger Global	3
7	1789 Capital	2
8	Alpha Wave Global	2
9	Altimeter	2
10	Atreides Management	2

What this week tells us

Software Development accounted for 5 of 58 verified deals in United States this week. The stage mix was 16 early-stage (pre-seed to seed) against 42 Series A or later. Y Combinator was the most active investor, backing 6 of the week's rounds.

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Built from 58 verified funding signals tracked by Signalbase. Window: 29 Sept – 05 Oct 2025. Last refresh: 28 Sept 2026.