Altimeter Capital

Hedge fund
Silicon Valley and Boston, USAFounded 2008$18.8B AUMwww.altimeter.comSee connections →Compare with Andreessen Horowitz

Technology-focused venture and growth investment firm supporting entrepreneurs through all stages of company growth and public transition.

Ranked on: #6 Top AI Investors 2026 · #33 Most Active VC Firms in 2026 · Get your badge →

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At a glance

Altimeter Capital appears in 14 funding rounds tracked by ValueAddVC since 2024, leading 5. Its most frequent sectors in these rounds are AI & Infrastructure and Defense & Space, and its most recent tracked deal was Elorian's $55M Seed round (Oct 16, 2026). It co-invests most often with Andreessen Horowitz, D1 Capital Partners and Lightspeed Venture Partners. ValueAddVC also tracks 6 funds managed by Altimeter Capital.

Strategy

Stages
Early StageGrowthLate Stage
Sectors
Technology
Geographies
Silicon Valley and Boston, USA

Recent changes

  1. Oct 16, 2026Invested in Elorian (Seed, $55M) TechCrunch
  2. Sep 6, 2026Sectors updated: Technology Wikipedia
  3. Sep 6, 2026Stages updated: Early Stage, Growth, Late Stage Wikipedia
  4. Aug 19, 2026Follow-on: Invested in Castelion (Series C, $800M) Castelion
  5. Aug 6, 2026Follow-on: Invested in Hadrian (Series D, $1.37B) Hadrian
Earlier changes (15)
  1. Aug 4, 2026Invested in Volta Infra (Venture, $300M) The Next Web
  2. Jul 30, 2026Invested in K2 Space (Series D, $500M) Bloomberg
  3. Jun 22, 2026Invested in Baseten (Series F, $1.5B) Baseten
  4. May 28, 2026Follow-on: Invested in Anthropic (Series H, $65B) TechCrunch
  5. Jan 10, 2026Invested in Hadrian (Undisclosed) Pulse 2.0
  6. Dec 5, 2025Invested in Castelion (Series B, $350M) Castelion
  7. Oct 24, 2025Invested in Crusoe (Series E, $1.375B) Crusoe
  8. Sep 17, 2025Invested in Groq (Growth, $750M) TechCrunch
  9. Sep 2, 2025Invested in Anthropic (Series F, $13B) TechCrunch
  10. Mar 31, 2025Follow-on: Invested in OpenAI ($40B) TechCrunch
  11. Oct 2, 2024Invested in OpenAI ($6.6B) TechCrunch
  12. 2021New fund: Altimeter Growth Lincoln Fund ($60M) Wikipedia
  13. 2020New fund: Altimeter Growth Cascade Fund ($100M) Wikipedia
  14. 2020New fund: Altimeter Growth Castle Fund ($32M) Wikipedia
  15. 2017New fund: Altimeter Capital Fund III ($200M) Wikipedia

Funds

6
FundVintageSizeStrategySource
Altimeter Growth Lincoln Fund2021$60MGrowth
As of 2021Wikipedia
Altimeter Growth Cascade Fund2020$100MGrowth
As of 2020Wikipedia
Altimeter Growth Castle Fund2020$32MGrowth
As of 2020Wikipedia
Altimeter Capital Fund III2017$200MOther
As of 2017Wikipedia
Altimeter Capital Fund II2015$225MOther
As of 2015Wikipedia
Show 1 earlier fund
FundVintageSizeStrategySource
Altimeter Capital Fund I2013$75MOther
As of 2013Wikipedia

Portfolio

11 total
OpenAIAnthropicElorianBasetenCrusoeGroqCastelionHadrianVolta InfraK2 SpaceCerebras

Recent Investment Activity

15

Track record: led 5 and participated in 9 of 14 tracked venture rounds · 10 in the last 12 months · led 1 Seed, 1 Venture, 1 Series F, 1 Series H

DateCompanyEventRoleAmountValuationInvestorsSource
Oct 16, 2026ElorianSeedLed$55M$300M
Striker Venture PartnersLeadunverifiedMenlo VenturesLeadunverifiedAltimeter CapitalLeadunverifiedNvidiaunverifiedJeff Deanunverified
TechCrunch
Aug 19, 2026CastelionSeries CParticipated$800M$13B
JPMorganChase Strategic Investment GroupLeadAndreessen HorowitzLeadCarlyle GroupLeadLightspeed Venture PartnersLavrock VenturesAltimeter CapitalGeneral CatalystInterlagosT. Rowe Price
Castelion
Aug 6, 2026HadrianSeries DParticipated$1.37B$7.87B
Washington Harbour PartnersLeadunverifiedValor Equity PartnersLeadunverified137 VenturesLeadunverifiedBaillie GiffordLeadunverifiedJPMorganChase Strategic Investment GroupLeadunverified1789 CapitalunverifiedApollo Global ManagementunverifiedT. Rowe PriceunverifiedCapitalGunverifiedAndreessen HorowitzunverifiedFounders FundunverifiedLux CapitalunverifiedAltimeter CapitalunverifiedConstruct CapitalunverifiedWCM Investment ManagementMorgan Stanley Wealth Management
Hadrian
Aug 4, 2026Volta InfraVentureLed$300M$2.4B
Andreessen HorowitzLeadAltimeter CapitalLeadNvidiaMichael Dell
The Next Web
Jul 30, 2026K2 SpaceSeries DParticipated$500M$6.8B
Kleiner PerkinsLeadunverifiedIconiq CapitalLeadunverifiedLightspeed Venture PartnersunverifiedCapitalGunverifiedAltimeter Capitalunverified
Pulse story
Jun 22, 2026BasetenSeries FLed$1.5B$13B
Altimeter CapitalLeadCrunchbase NewsConvictionLeadCrunchbase NewsSpark CapitalLeadCrunchbase NewsSands CapitalLeadCrunchbase NewsWellington ManagementLeadCrunchbase NewsBlackbird VenturesDealroom / company announcement · unverifiedIVP (Institutional Venture Partners)Dealroom / company announcement · unverifiedGreylock PartnersDealroom / company announcement · unverified
Baseten
May 28, 2026AnthropicSeries HLed$65B$965B
Altimeter CapitalLeadDragoneer Investment GroupLeadGreenoaksLeadSequoia CapitalLeadCapital GroupLeadunverifiedCoatue ManagementLeadD1 Capital PartnersLeadBaillie GiffordBlackstoneBrookfieldD. E. Shaw VenturesDST GlobalFidelity InvestmentsSamsungSK HynixMicronAmazon
TechCrunch
May 14, 2026CerebrasIPOParticipated$6.4B$56.4B
Alpha Wave GlobalMotley Fool · unverifiedFoundation CapitalMotley Fool · unverifiedTiger Global ManagementMotley Fool · unverifiedFidelity InvestmentsMotley Fool · unverifiedBenchmarkMotley Fool · unverifiedAltimeter CapitalMotley Fool · unverifiedAMD VenturesMotley Fool · unverifiedCoatue ManagementMotley Fool · unverifiedG42
SEC EDGAR (Cerebras 8-K)
Jan 10, 2026Hadrianfunding roundParticipatedUndisclosed$1.6B
T. Rowe PriceLeadunverifiedAltimeter CapitalunverifiedD1 Capital PartnersunverifiedStepStone Groupunverified1789 CapitalunverifiedFounders FundunverifiedLux CapitalunverifiedAndreessen HorowitzunverifiedConstruct Capitalunverified
Pulse 2.0
Dec 5, 2025CastelionSeries BLed$350M—
Altimeter CapitalLeadLightspeed Venture PartnersLeadLavrock VenturesAndreessen HorowitzGeneral CatalystFirst InCantos VCBlueYard CapitalAvenir Growth CapitalChampion HillInterlagosSpace VC
Castelion
Oct 24, 2025CrusoeSeries EParticipated$1.375B$10B+
Valor Equity PartnersLeadunverifiedMubadala CapitalLeadunverifiedFounders FundunverifiedNvidiaunverifiedAtreides ManagementunverifiedAltimeter CapitalunverifiedSalesforce VenturesunverifiedTiger Global Managementunverified
Crusoe
Sep 17, 2025GroqGrowthParticipated$750M$6.9B
DisruptiveLeadBlackRockNeuberger BermanSamsungCisco InvestmentsD1 Capital PartnersAltimeter Capital
TechCrunch
Sep 2, 2025AnthropicSeries FParticipated$13B$183B
Iconiq CapitalLeadFidelity InvestmentsLeadLightspeed Venture PartnersLeadAltimeter CapitalBaillie GiffordBlackRockBlackstoneCoatue ManagementD1 Capital PartnersInsight PartnersOTPP (Ontario Teachers' Pension Plan)Qatar Investment Authority
TechCrunch
Mar 31, 2025OpenAIfunding roundParticipated$40B$300B
SoftBank GroupLeadMicrosoftCoatue ManagementAltimeter CapitalThrive Capital
TechCrunch
Oct 2, 2024OpenAIfunding roundParticipated$6.6B$157B
Thrive CapitalLeadMicrosoftNvidiaSoftBank GroupKhosla VenturesAltimeter CapitalFidelity InvestmentsMGX
TechCrunch

Sector / Stage Activity

By sector (portfolio)
AI infra
5 · 45%
Defense
2 · 18%
Semiconductors
2 · 18%
AI
1 · 9%
Space
1 · 9%
By stage (tracked rounds)
Series D
2 · 13%
Series F
2 · 13%
Seed
1 · 7%
Series C
1 · 7%
Venture
1 · 7%
Series H
1 · 7%
IPO
1 · 7%
Series B
1 · 7%
Series E
1 · 7%
Growth
1 · 7%

Co-Investors

12
Nvidia · 6 sharedAndreessen Horowitz · 4 sharedFidelity Investments · 4 sharedT. Rowe Price · 4 sharedAlpha Wave Global · 3 sharedCapitalG · 3 sharedCoatue Management · 3 sharedD. E. Shaw Ventures · 3 sharedInfinitum · 1 sharedInterlagos · 1 sharedLavrock Ventures · 1 sharedMichael Dell · 1 shared

Similar Firms

overlapping sector, stage or region
SoftBank Vision FundDFJ GrowthVista Equity PartnersNeuberger BermanTiger Global ManagementTemasek

Value Add Research

Latest Pulse

  1. Elorian Launches Glimpse, Its First Visual-Reasoning AI ModelElorian, a Palo Alto startup led by ex-DeepMind researcher Andrew Dai, launched Glimpse, its first AI model, six months after emerging from stealth in April with $55M in seed funding at a $300M valuation. Glimpse is a visual-reasoning model that re-examines images mid-answer.→
  2. Figma Exec Joins AI Inference Startup BasetenA senior Figma executive is joining AI inference startup Baseten, another sign that operating talent is flowing from the application layer toward the AI infrastructure layer.→
  3. Nvidia May Put $10B Into Anthropic's IPONvidia is in talks to invest up to $10 billion in Anthropic's IPO, an offering bankers say could raise $100 billion at a $2 trillion valuation and become the largest in history.→
  4. Defense Tech's Two Speeds: Hypersonics and Everyone ElseCastelion's $13 billion valuation and Shield AI's $12.7 billion mark show defense-tech capital concentrating hard in a handful of hardware primes-in-waiting, while smaller Tier 2/3 suppliers are left to roll up instead of raise.→
  5. Castelion Hits $13B Value on $1B Hypersonic Missile RoundCastelion, the hypersonic-missile startup founded by former SpaceX executives, raised a $1B Series C co-led by Andreessen Horowitz, Carlyle and JPMorgan Chase at a $13B valuation, more than double its prior mark.→
  6. Thrive Holdings Raises $2B to Buy and Rewire Firms With AIThrive Holdings, the Thrive Capital spinout that acquires services businesses and rebuilds them with AI, raised $2 billion at a $12 billion valuation from SoftBank, D1 Capital and Altimeter, with OpenAI as an equity holder.→
  7. Sequoia Goes All-In on AI Under New LeadersSequoia Capital closed a roughly $7B expansion fund and has directed about 70% of recent investments into AI, doubling down on the sector under new co-stewards Alfred Lin and Pat Grady after Roelof Botha's exit.→
  8. Volta's $10B AI Contract Hinges on a Norway SiteDays after its $2.4B valuation round, Volta Infra disclosed it will lease Norway-based capacity from Bitdeer to help deliver its reported $10B, six-year compute contract with a leading AI developer.→
  9. Nvidia, Dell Back AI Cloud Startup Volta at $2.4BVolta Infra raised $300M at a $2.4B valuation from a16z, Altimeter, Nvidia and Michael Dell, plus a $10B, six-year cloud-capacity contract reportedly with Anthropic.→
  10. Base Power Raises $1B, Launches Home BatteryBase Power raised $1B at a $13B valuation and launched Base Core, a 39.2 kWh home battery built in Austin -- a bet that AI-driven grid strain shows up first at the household level.→
  11. K2 Space Raises $500M Series D at $6.8B ValuationK2 Space raised a $500 million Series D co-led by Kleiner Perkins and ICONIQ, valuing the large-satellite manufacturer at $6.8 billion as it targets building up to 100 large satellites a year for commercial and defense customers.→
  12. K2 Space Raises $500M at $6.8B ValuationK2 Space raised a $500 million Series D at a $6.8 billion valuation, co-led by Kleiner Perkins and Iconiq, to scale production of large, high-power satellites for data-heavy communications and defense missions.→
  13. What Anthropic's $1.2T Secondary Print Really SignalsAnthropic shares are changing hands on secondary markets at an implied $1.2 trillion valuation, passing OpenAI's roughly $908 billion mark -- but the number reflects extreme scarcity, not a new primary round.→
  14. Why the Same Five Neoclouds Keep Landing MegaroundsBaseten, Together AI and Crusoe have each raised nine- or ten-figure rounds within the past year, showing AI infrastructure capital increasingly recycling into a small, familiar set of 'neocloud' names rather than funding new entrants.→
  15. Baseten Raises $1.5B Series F at a $13B Valuation as AI Inference Demand ExplodesAI inference provider Baseten closed a $1.5 billion Series F at a $13 billion valuation, the largest funding round of the week, led by Altimeter Capital and Conviction Partners with Spark, Sands and Wellington participating. The raise underscores how serving AI models -- not just training them -- has become one of the most valuable and capital-intensive layers of the stack.→
  16. Baseten Reportedly Raising ~$1.5B at a $13B Valuation as AI Inference Becomes the Hot TradeAI inference platform Baseten is reportedly raising roughly $1.5 billion at a valuation of up to $13 billion -- tripling its mark in about five months -- co-led by Spark Capital, Sands Capital, Altimeter and Wellington. The round captures investors racing into the layer that actually serves AI models in production, where Baseten's ARR has reportedly jumped from $200M to $600M.→

Altimeter Capital FAQ

How large are Altimeter Capital's funds?

Altimeter Capital funds Value Add tracks include Altimeter Growth Lincoln Fund ($60M, 2021); Altimeter Growth Cascade Fund ($100M, 2020); Altimeter Growth Castle Fund ($32M, 2020); Altimeter Capital Fund III ($200M, 2017), out of 6 Altimeter Capital funds tracked in total.

What companies has Altimeter Capital invested in?

Altimeter Capital's portfolio includes OpenAI, Anthropic, Elorian, Baseten, Crusoe, Groq, and 5 more tracked companies.

Who does Altimeter Capital co-invest with most?

In the rounds Value Add tracks, Altimeter Capital most often invests alongside Nvidia (6 shared deals), Andreessen Horowitz (4 shared deals), Fidelity Investments (4 shared deals), T. Rowe Price (4 shared deals), Alpha Wave Global (3 shared deals).

Sources & methodologyshow
Where these figures come from

Figures are labelled Reported (a source states it), Estimated, Derived (computed from other facts) or Rumored (in talks / unconfirmed). Rumors never replace a confirmed figure. Each figure keeps its own as-of date; history is preserved rather than overwritten.

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