Big round · 30 October 2026

Fractile raises $700M Series C led by Lightspeed Venture Partners

By Millionrounds ResearchPublished 30 October 2026Updated 1 November 2026

Fractile, based in United Kingdom, has raised $700M in a Series C led by Lightspeed Venture Partners and Redpoint, announced on 30 October 2026. 2 other investors joined. It is the 75th largest equity round we recorded in the twelve months to that date, and the 12th largest Series C of 235. The median Series C over the same period was $100M, so this one is 7.0 times that. Its previous round on record was a Series B of $220M in May 2026, 6 months earlier.

Raised$700M3 sources reported it
StageSeries C5 earlier rounds on record
Investors42 named as lead
Where GBUnited Kingdom

AIHardware & ElectronicsSemiconductors

How big is it?

Against every equity round we recorded in the twelve months to 30 October 2026. Ranks count companies, so the same raise reported twice is counted once.

#75equity round of the last twelve months
#12Series C of 235 in that time
#7round in United Kingdom, of 352
This round$700M
Median Series C$100M

7.0 times the median Series C of the last twelve months.

Who invested

Also in the round

Funding history

  1. October 2026Series C$700M
  2. May 2026Series B$220M
  3. January 2026Venture$23M
  4. January 2025Seed$329K
  5. June 2024Seed$15M
  6. February 2023Seed$2.4M

$960M raised across the 6 rounds we hold.

Reported by

  1. Tech Funding News30 October
  2. Ventureburn30 October
  3. diariobitcoin.com1 November

The round's figures come from these reports; each link opens the original.

Other big rounds that week

Serval$150M Series CCohere$5.0B Series EUUpwind$400M Series CApproaching.AI$193M Series BGroup14 Technologies$169M Series DDDulo$130M Seed
The companyFractile on Millionrounds→Weekly roundupWeek of 26 October→Monthly roundupOctober 2026→