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Y Combinator

TechnologyAISoftware & SaaS

Total Raises

956

Lead

78

Participant

878

First Deal

Nov 8, 2011

Latest Deal

Sep 17, 2026

Avg Deal Size

$41.47M

Activity Timeline

Monthly deal count over time

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All Investments

Showing 1 of 956 investments
DateCompanyRoundAmountRoleIndustry
9/17/2026KastleSeries A$24 MillionParticipantAI, Financial Services

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Industry Breakdown

Portfolio concentration by sector

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Stage Focus

Investment activity by round type

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Co-investor Network

Most frequent co-investment partners (top 15)

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🚀 Startup Funding Intelligence

Discover startups raising capital and the investors backing them.