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Series B investors active this year

224 US Series B investors filed a new fund, deal vehicle or board seat with the SEC in the last 12 months, 86 (38%) of them in the last 90 days. The top home states are California (98), New York (40) and Massachusetts (22); the most common sectors are AI & ML (88), Healthcare (48) and B2B Software (48). For the 194 with a stated or estimated check size, the median range is $2.5M–$7.6M. Stage comes from the investor's own website where it says; otherwise from fund size and the rounds it has joined, with angels, syndicates and accelerators counted as pre-seed and seed.

Updated from SEC filings · How we build this list

How many Series B investors are investing right now?

224 filed a new fund, deal vehicle or board seat with the SEC in the last 12 months, 86 of them in the last 90 days.

How much do Series B investors typically invest?

The median estimated check is $2.5M–$7.6M, across 194 investors with a plausible estimate. Actual checks vary by round and lead role.

Where are Series B investors based?

Most are in California (98), New York (40) and Massachusetts (22).

What sectors do Series B investors back most?

AI & ML (88), Healthcare (48) and B2B Software (48) lead, by investors with recent activity in each.

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  • Earthshot VenturesVC firm · San Francisco, CA

    Pre-seed to Series B · checks $1.25M–$3.75M (est.)

    AI & MLClimate & Energy

  • HOF CapitalVC firm · New York, NY

    Series B, Growth · checks $15M–$45M (est.)

    AI & MLFood & Agriculture

  • OpenAI StartupVC firm · San Francisco, CA

    Seed to Series B · checks $4M–$12M (est.)

    AI & ML

  • AcrewVC firm · San Francisco, CA

    Seed to Growth · checks $150K–$450K (est.)

    Cybersecurity

  • Motive VentureVC firm · New York, NY

    Seed to Series B · checks $2M–$6M (est.)

    FintechAI & ML

  • AMDT ResilienceVC firm · Reston, VA

    Seed to Series B · checks $5M–$15M (est.)

    Sector focus not yet verified

  • CarnelianVC firm · Houston, TX

    Series A to Growth · checks $9.75M–$29.3M (est.)

    Climate & Energy

  • Inter-AtlanticVC firm · New York, NY

    Series B

    Insurtech

  • Work-Bench VenturesVC firm · New York, NY

    Pre-seed to Series B · checks $1.25M–$3.75M (est.)

    B2B SoftwareAI & ML

  • Signet Healthcare Partners QP PartnershipVC firm · New York, NY

    Seed to Series B · checks $3M–$9M (est.)

    HealthcareBiotech & Pharma

  • YK BioventuresVC firm · Burlingame, CA

    Seed to Series B · checks $2.5M–$7.5M (est.)

    Biotech & Pharma

  • U.S. Venture PartnersVC firm · Menlo Park, CA

    Seed to Series B · checks $4M–$12M (est.)

    HealthcareBiotech & PharmaB2B SoftwareAI & ML

  • SemiAnalysis CapitalVC firm · San Francisco, CA

    Seed to Series B · checks $4M–$12M (est.)

    Sector focus not yet verified

  • TCGX Asia Life SciencesVC firm · Palo Alto, CA

    Seed to Series B · checks $4M–$12M (est.)

    Biotech & Pharma

  • Radiant FluxVC firm · New York, NY

    Seed to Series B · checks $2M–$6M (est.)

    Sector focus not yet verified

  • OCV PartnersVC firm · Los Angeles, CA

    Series B, Growth · checks $1.32M–$4M (est.)

    HealthcareAI & ML

  • CommonwealVC firm · New York, NY

    Pre-seed to Series B · checks $250K–$500K (est.)

    GovTech & Public SectorClimate & EnergyDefense & AerospaceCybersecurity

  • Ora GlobalVC firm · New York, NY

    Seed to Series B · checks $2.5M–$7.5M (est.)

    Sector focus not yet verified

  • Elevation CapitalVC firm · Salt Lake City, UT

    Seed to Series B · checks $5M–$15M (est.)

    Sector focus not yet verified

  • ValarVC firm · New York, NY

    Seed to Series B · checks $3M–$9M (est.)

    Fintech

  • JCDPVC firm · Chicago, IL

    Seed to Series B · checks $3.5M–$10.5M (est.)

    Industrial & Manufacturing

  • OldVC firm · West Hollywood, CA

    Seed to Series B · checks $3M–$9M (est.)

    Sector focus not yet verified

  • New GroveVC firm · West Hollywood, CA

    Seed to Series B · checks $3M–$9M (est.)

    Sector focus not yet verified

  • 8VCVC firm · Austin, TX

    Series B, Growth · checks $15M–$45M (est.)

    Sector focus not yet verified

  • LiveOakVC firm · Austin, TX

    Pre-seed to Series B · checks $200K–$600K (est.)

    Real Estate & PropTechAI & MLCybersecurity

  • Humble GrowthVC firm · New York, NY

    Seed to Series B · checks $3.13M–$9.4M (est.)

    Biotech & Pharma

  • Hidden VariableVC firm · New York, NY

    Seed to Series B · checks $2M–$6M (est.)

    Sector focus not yet verified

  • XPVVC firm · El Segundo, CA

    Pre-seed to Series B · checks $3M–$9M (est.)

    AI & ML

  • Dimension CapitalVC firm · Coral Gables, FL

    Series A to Growth · checks $7.5M–$22.5M (est.)

    Biotech & PharmaFintech

  • MercuryVC firm · Houston, TX

    Pre-seed to Growth · checks $1.5M–$4.5M (est.)

    Crypto & Web3AI & MLMedia, Gaming & CreatorE-commerce & Retail

  • 82VS SeedVC firm · Waltham, MA

    Pre-seed to Series B · checks $200K–$600K (est.)

    Biotech & Pharma

  • North Haven Venture CapitalVC firm · West Conshohocken, PA

    Seed to Series B · checks $2.45M–$7.35M (est.)

    Sector focus not yet verified

  • PVPVC firm · New York, NY

    Pre-seed to Series B · checks $4.15M–$12.4M (est.)

    Sector focus not yet verified

  • Newpath PartnersVC firm · Boston, MA

    Seed to Series B · checks $3M–$9M (est.)

    Biotech & Pharma

  • Ten ElevenVC firm · Burlingame, CA

    Seed to Growth · checks $2.27M–$6.8M (est.)

    CybersecurityAI & ML

  • Translink Capital PartnersVC firm · Palo Alto, CA

    Seed to Series B · checks $1.73M–$5.2M (est.)

    CybersecurityE-commerce & RetailHealthcareClimate & Energy

  • Good Life Sciences GenerationsVC firm · Charleston, SC

    Seed to Series B

    Biotech & Pharma

  • R136 Ventures Late StageVC firm · Woodside, CA

    Series A to Growth · checks $675K–$2.05M (est.)

    AI & MLB2B SoftwareFintechMobility & Logistics

  • WestlyVC firm · Menlo Park, CA

    Seed to Series B · checks $5M–$15M (est.)

    AI & MLHardware & Robotics

  • WCVVC firm · San Francisco, CA

    Seed to Series B · checks $4M–$12M (est.)

    Sector focus not yet verified