Investor Lists

Series B social Media investors

Updated 7 November 2026

Firms we have watched take part in a Series B round raised by a social Media company in the last two years. Both the stage and the sector are what they did, not what their website says.

See all 22 →The top 22
22investors on the listNo change this week
887cheques in 12 months+2% against the market
$34Mmedian round they joined+320% against the market median
100%wrote a cheque in 12 months
50%have led a round

The Top 22

Ordered by cheques observed, never by anything anyone paid for

Deploying now (22)

  1. 1Alumni VenturesDeploying nowVC firm · United States1,598$12Mmedian roundNov 2026last seen
  2. 2AccelDeploying nowVC firm · United States1,341$32Mmedian roundNov 2026last seen
  3. 3Lightspeed Venture PartnersDeploying nowVC firm · United States1,341$35Mmedian roundNov 2026last seen
  4. 4Index VenturesDeploying nowVC firm · United Kingdom1,027$31Mmedian roundNov 2026last seen
  5. 5True VenturesDeploying nowVC firm · Netherlands397$8.7Mmedian roundOct 2026last seen
  6. 6Endeavor CatalystDeploying nowCorporate VC · United States318$30Mmedian roundOct 2026last seen
  7. 7Bloomberg BetaDeploying nowVC firm · United States206$8Mmedian roundSept 2026last seen
  8. 8Innovation EndeavorsDeploying nowVC firm · United States178$18Mmedian roundOct 2026last seen
  9. 9Blockchain CapitalDeploying nowVC firm · United States130$15Mmedian roundNov 2026last seen
  10. 10Protocol LabsDeploying nowCorporate VC · United States87$4.3Mmedian roundApr 2026last seen
  11. 11Knight FoundationDeploying nowVC firm · United States35$100Mmedian roundMar 2026last seen
  12. 12True.Deploying nowVC firm · United Kingdom30$20Mmedian roundMar 2026last seen
  13. 13Stewart ButterfieldDeploying nowAngel15$35Mmedian roundOct 2026last seen
  14. 14Anthos CapitalDeploying nowVC firm · United States13$27Mmedian roundApr 2026last seen
  15. 15Bain Capital CryptoDeploying nowCorporate VC · United States8$51Mmedian roundOct 2026last seen
  16. 16Camber PartnersDeploying nowPrivate equity · United States1$63Mmedian roundJun 2026last seen
  17. 17Thomas DimsonDeploying nowGrowth equity1$35Mmedian roundOct 2026last seen
  18. 18Zenith CapitalDeploying nowPrivate equity · United Kingdom1$35Mmedian roundOct 2026last seen
  19. 19Andy ZhongDeploying nowGrowth equity1$35Mmedian roundOct 2026last seen
  20. 20BayshoreDeploying nowPrivate equity · United States1$35Mmedian roundOct 2026last seen
  21. 21the Nintendo Family OfficeDeploying nowGrowth equity1$35Mmedian roundOct 2026last seen
  22. 22the ZeniMax FamilyDeploying nowGrowth equity1$35Mmedian roundOct 2026last seen

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Quick answers about series B social Media investors

Who are the most active series B social Media investors?

By cheques observed, the most active are Alumni Ventures, Accel, Lightspeed Venture Partners, Index Ventures and True Ventures.

How many series B social Media investors are there?

22 are on record. 100% made an investment in the last 12 months and 50% have led a round.

Which stages do series B social Media investors back?

Of the rounds with a named stage in the last 12 months, mostly Series A (26%) and Seed (22%).

How big are the rounds series B social Media investors join?

The typical (median) round among the leading investors here is $35M.

Which sectors do series B social Media investors back most?

In the last 12 months, mostly AI, Fintech and Cybersecurity.

Which series B social Media investors lead the most rounds?

Accel (103 led), Lightspeed Venture Partners (83 led) and Index Ventures (62 led).

Where are series B social Media investors based?

Among the most active, most are based in the United States (13), the United Kingdom (3) and the Netherlands (1).

What have series B social Media investors invested in recently?

Recent rounds include Thinking Machines Lab (Other, Nov 2026, with Accel), firmly (Series A, Nov 2026, with Alumni Ventures) and Uranium Digital (Series A, Nov 2026, with Blockchain Capital).

Built from the rounds we watched, refreshed every night. How we count · Report a correction