Largest Series B Rounds of 2026 (Ranked)

Valar Atomics, GMI Cloud, Oratomic raised the three largest tracked Series B rounds of 2026, per Value Add VC's tracked data from 2026-01-01 through 2026-10-15.

Private, US-tracked rounds only; rumored or "in talks" rounds excluded. Not a market total.

Methodology

Deals tracked by Value Add VC from filings, wire releases and news outlets — not a total for the whole market or a complete list of every Series B round. Data window: 2026-01-01 through 2026-10-15 (2026 year-to-date).

Rounds are bucketed into Series B by the store's own tracked funding-stage label. Public companies, debt, fund closes, acquisitions, unverified/rumored rounds and rounds without a clear single funding stage are excluded.

Last updated 2026-10-15. Missing a deal? Submit it →

Largest Series B rounds, 2026 YTD

#DateCompanyAmountLead investorsIndustrySource
1Aug 3, 2026Valar Atomics$1BSequoia CapitalEnergyTechCrunch
2Sep 30, 2026GMI Cloud$668M—AI infraPulse 2.0
3Oct 8, 2026Oratomic$475MARCH Venture Partners, Spark Capital, Khosla Ventures, Index Ventures, General Catalyst, Bezos ExpeditionsQuantum computingSiliconANGLE
4Jul 21, 2026Meshy$400M—AI infraMeshy
5Aug 17, 2026Higgsfield$400MDST GlobalAI infraTechCrunch
6Jun 25, 2026Ollin Biosciences$330MTCG CrossoverBiotechCrunchbase News
7Jun 25, 2026General Intuition$320MKhosla VenturesAI infraTechCrunch
8Jun 17, 2026Odyssey$310MNatural CapitalAI infraOdyssey
9Sep 4, 2026Gimlet Labs$300MAndreessen HorowitzAI infraGlobeNewswire
10Aug 17, 2026Wispr Flow$280MMenlo VenturesAI infraTechCrunch
11Oct 1, 2026Armadin$255.5MAndreessen Horowitz, AccelEnterprise SaaSTechCrunch
12Aug 26, 2026Instinct$250MIndex Ventures, BenchmarkAI infraTechCrunch
13Sep 2, 2026Medici Brands$250MGreenoaks, Valor Equity PartnersConsumerPulse2
14Oct 6, 2026Vinci$250MAdvent International, Temasek, XoraSemiconductorsFinancial Content
15Feb 4, 2026Positron AI$230M—SemiconductorsStorageNewsletter
16May 14, 2026Fractile$220MAccel, Founders FundSemiconductorsYahoo Finance
17Sep 29, 2026General Intuition$220M—AI infraSiliconANGLE
18Jul 30, 2026Simile$200MGreenoaksAI infraTechCrunch
19Oct 6, 2026Type One Energy$200MBreakthrough Energy VenturesEnergyTechCrunch
20Oct 8, 2026Arena$200MLightspeed Venture Partners, Khosla VenturesAI infraTechCrunch
21Jun 26, 2026Osanni Bio$190M—BiotechCrunchbase News
22Jul 7, 2026Quaise Energy$180M (final close)Prelude VenturesEnergyQuaise Energy
23Jul 21, 2026Augustus$180MTiger Global ManagementFintechThe Block
24Jan 29, 2026PaleBlueDot AI$150MB CapitalAI infraPR Newswire
25Sep 16, 2026Arcee AI$150M—AISiliconANGLE
26Sep 17, 2026Mazama Energy$135M—EnergyTechCrunch
27Oct 13, 2026Souffle Therapeutics$135M—BiotechFinancialContent
28Jul 22, 2026Crystalys Therapeutics$130MFrazier Life SciencesBiotechcitybiz
29Aug 27, 2026Regent$120M—TransportationREGENT
30Oct 6, 2026General Medicine$120MAndreessen HorowitzHealthcarePR Newswire
31May 26, 2026OpenRouter$113M—AI infrano source link
32Jun 17, 2026Twenty$100MAccelDefenseSiliconANGLE
33Jul 1, 2026TwelveLabs$100MNew Enterprise Associates (NEA), NAVER VenturesAI infraPYMNTS
34Jul 9, 2026Lyzr$100M—Enterprise SaaSBloomberg
35Aug 11, 2026Aureka Biotechnologies$100M—BiotechVir.com.vn
36Sep 2, 2026HiddenLayer$100MDelta-v CapitalAI infraTechCrunch
37Sep 21, 2026Rainmaker$100MUpfront Ventures, DCVC, Lowercarbon CapitalClimate techPR Newswire
38Sep 28, 2026Quartermaster$100MInsight Partners, Overmatch VenturesDefenseTechCrunch
39Sep 29, 2026Efficient Computer$97MTQ VenturesSemiconductorsSiliconANGLE
40Jul 8, 2026Venus Aerospace$91M—SpaceSpaceNews
41Oct 6, 2026Spiko$90MNew Enterprise Associates (NEA)FintechPulse2.com
42Oct 7, 2026Nous Research$90MRobot VenturesAI infraTechCrunch
43Oct 6, 2026KymaThera$80M—BiotechPulse2.com
44Sep 23, 2026Ema$77MCreaegisEnterprise SaaSTechCrunch
45Jun 22, 2026Fomo$75MIndex VenturesCryptoIndex Ventures
46Jul 29, 2026Freehand$75MBattery Ventures, NewRoad Capital PartnersEnterprise SaaSForbes
47Sep 22, 2026Firecrawl$75MSmash CapitalDeveloper toolsSiliconANGLE
48Oct 6, 2026Multiply Labs$75M—BiotechBusiness Wire
49Sep 8, 2026Moonwalk Biosciences$70MAlpha Wave GlobalBiotechBioSpace
50Aug 6, 2026Omilia$67MExpedition Growth CapitalAI infraCMSWire

FAQ

What was the largest Series B round of 2026?
Valar Atomics raised $1B in a Series B round on 2026-08-03.
How many Series B rounds does Value Add VC track for 2026?
90 tracked 2026 Series B rounds, ranked here by dollar amount (top 50 shown).
Which companies raised the biggest Series B rounds in 2026?
Valar Atomics, GMI Cloud, Oratomic raised the three largest tracked Series B rounds of 2026.

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Most Active Seed Investors →Most Active Series A Investors →Most Active Series C+ / Growth Investors →Largest Seed Rounds →Largest Series A Rounds →Largest Series C+ / Growth Rounds →Most Active VC Firms (2026) →All rankings →