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Firm & fund profile / Sourced portfolio

Altimeter

Tracked participation in 11 Atlas companies, with 6 explicitly attributed leads.

Firm website ↗

11portfolio companies

19round participations

6lead positions

$67.1Bled round total

Conviction

Most recent leads

The latest rounds this investor is sourced as leading, newest first.

Jun 2026BasetenSeries F$1.5Bat $13B valuation May 2026AnthropicSeries H$65Bat $965B valuation Nov 2025ProfluentVenture financing (co-led as described)$106MMay 2025ParloaSeries C$120Mat $1B valuation Sep 2024GleanSeries E$260Mat $4.6B valuation Apr 2024ParloaSeries B$66M

Capital activity

Portfolio

CompanyLatest valuationFirst → latestRoundsRoleAttributed partner

CCognition$48BSep 2026 → Sep 20261 roundParticipant—

BBaseten$13BFeb 2026 → Jun 20262 rounds1 led—

AAnthropic$965BSep 2025 → May 20263 rounds1 led—

OOpenAIFrontierOpenAI is a frontier AI research and deployment organization structured around a nonprofit mission and a for-profit…$730Bvaluation$399.6BraisedRecent roundsFunding round (new investment + valuation) · Sep 2026$110B · Amazon, NVIDIA +1Funding round (committed capital at close) · Mar 2026$122B · Altimeter, Amazon +37Equity financing (new investment) · Feb 2026$110B · Amazon, NVIDIA +1OpenAI$852BMar 2025 → Mar 20262 roundsParticipant—

PParloa$3BApr 2024 → Jan 20263 rounds2 led—

PProfluent—Nov 2025 → Nov 20251 round1 led—

CCrusoeNeocloudsCrusoe is an energy-first AI infrastructure company that builds and operates AI data center “factory” capacity and…$10Bvaluation$3.8BraisedRecent roundsSeries E (initial closing) · Oct 2025$1.4B · led by Mubadala Capital, Valor Equity PartnersCredit facility (debt) · Aug 2025$175M · led by Victory Park CapitalCredit facility (debt) · Jun 2025$750M · led by Brookfield Asset Management (infrastructure debt platform)Crusoe$10BOct 2025 → Oct 20251 roundParticipant—

CCerebras$8.1BNov 2021 → Sep 20252 roundsParticipant—

GGlean$7.2BSep 2024 → Jun 20252 rounds1 led—

AAnduril$14BAug 2024 → Aug 20241 roundParticipant—

CCoreWeaveNeocloudsCoreWeave, Inc. is a GPU-focused “AI-native” cloud infrastructure provider delivering compute, storage, and…$32.8BraisedRecent roundsDebt financing (delayed draw term loan facility / DDTL 5.5) · Aug 2026$2.6B · Not specified in the sourced text excerptDebt financing (loan facility) · 2026-04-??$8.5B · Not specified in the sourced text excerptPIPE / secondary primary common stock investment (equity) · 2026-03-??$2B · NVIDIACoreWeave—May 2024 → May 20241 roundParticipant—

DateCompanyRoundRaisedValuationRoleEvidence

Sep 08, 2026CCognitionSeries E$2B$48BParticipant

Jun 22, 2026BBasetenSeries F$1.5B$13BLead

May 28, 2026AAnthropicSeries H$65B$965BLead

Mar 31, 2026OOpenAIFrontierOpenAI is a frontier AI research and deployment organization structured around a nonprofit mission and a for-profit…$730Bvaluation$399.6BraisedRecent roundsFunding round (new investment + valuation) · Sep 2026$110B · Amazon, NVIDIA +1Funding round (committed capital at close) · Mar 2026$122B · Altimeter, Amazon +37Equity financing (new investment) · Feb 2026$110B · Amazon, NVIDIA +1OpenAIFunding round (committed capital at close)$122B$852BParticipant

Feb 12, 2026AAnthropicSeries G$30B$380BParticipant

Feb 05, 2026BBasetenSeries E$300M$5BParticipant

Jan 15, 2026PParloaSeries D$350M$3BParticipant

Nov 19, 2025PProfluentVenture financing (co-led as described)$106M—Lead

Oct 24, 2025CCrusoeNeocloudsCrusoe is an energy-first AI infrastructure company that builds and operates AI data center “factory” capacity and…$10Bvaluation$3.8BraisedRecent roundsSeries E (initial closing) · Oct 2025$1.4B · led by Mubadala Capital, Valor Equity PartnersCredit facility (debt) · Aug 2025$175M · led by Victory Park CapitalCredit facility (debt) · Jun 2025$750M · led by Brookfield Asset Management (infrastructure debt platform)CrusoeSeries E (initial closing)$1.4B$10BParticipant

Sep 30, 2025CCerebrasSeries G$1.1B$8.1BParticipant

Sep 02, 2025AAnthropicSeries F$13B$183BParticipant

Jun 10, 2025GGleanSeries F$150M$7.2BParticipant

May 06, 2025PParloaSeries C$120M$1BLead

Mar 31, 2025OOpenAIFrontierOpenAI is a frontier AI research and deployment organization structured around a nonprofit mission and a for-profit…$730Bvaluation$399.6BraisedRecent roundsFunding round (new investment + valuation) · Sep 2026$110B · Amazon, NVIDIA +1Funding round (committed capital at close) · Mar 2026$122B · Altimeter, Amazon +37Equity financing (new investment) · Feb 2026$110B · Amazon, NVIDIA +1OpenAIEquity financing (new funding)$40B$300BParticipant

Sep 10, 2024GGleanSeries E$260M$4.6BLead

Aug 07, 2024AAndurilSeries F$1.5B$14BParticipant

May 01, 2024CCoreWeaveNeocloudsCoreWeave, Inc. is a GPU-focused “AI-native” cloud infrastructure provider delivering compute, storage, and…$32.8BraisedRecent roundsDebt financing (delayed draw term loan facility / DDTL 5.5) · Aug 2026$2.6B · Not specified in the sourced text excerptDebt financing (loan facility) · 2026-04-??$8.5B · Not specified in the sourced text excerptPIPE / secondary primary common stock investment (equity) · 2026-03-??$2B · NVIDIACoreWeaveSeries C$1.1B—Participant

Apr 24, 2024PParloaSeries B$66M—Lead

Nov 10, 2021CCerebrasSeries F$250M$4BParticipant

DateCompanyRoundRaisedValuationRoleEvidence

Mar 31, 2026OOpenAIFrontierOpenAI is a frontier AI research and deployment organization structured around a nonprofit mission and a for-profit…$730Bvaluation$399.6BraisedRecent roundsFunding round (new investment + valuation) · Sep 2026$110B · Amazon, NVIDIA +1Funding round (committed capital at close) · Mar 2026$122B · Altimeter, Amazon +37Equity financing (new investment) · Feb 2026$110B · Amazon, NVIDIA +1OpenAIFunding round (committed capital at close)$122B$852BParticipant

May 28, 2026AAnthropicSeries H$65B$965BLead

Mar 31, 2025OOpenAIFrontierOpenAI is a frontier AI research and deployment organization structured around a nonprofit mission and a for-profit…$730Bvaluation$399.6BraisedRecent roundsFunding round (new investment + valuation) · Sep 2026$110B · Amazon, NVIDIA +1Funding round (committed capital at close) · Mar 2026$122B · Altimeter, Amazon +37Equity financing (new investment) · Feb 2026$110B · Amazon, NVIDIA +1OpenAIEquity financing (new funding)$40B$300BParticipant

Feb 12, 2026AAnthropicSeries G$30B$380BParticipant

Sep 02, 2025AAnthropicSeries F$13B$183BParticipant

Sep 08, 2026CCognitionSeries E$2B$48BParticipant

Jun 22, 2026BBasetenSeries F$1.5B$13BLead

Aug 07, 2024AAndurilSeries F$1.5B$14BParticipant

Oct 24, 2025CCrusoeNeocloudsCrusoe is an energy-first AI infrastructure company that builds and operates AI data center “factory” capacity and…$10Bvaluation$3.8BraisedRecent roundsSeries E (initial closing) · Oct 2025$1.4B · led by Mubadala Capital, Valor Equity PartnersCredit facility (debt) · Aug 2025$175M · led by Victory Park CapitalCredit facility (debt) · Jun 2025$750M · led by Brookfield Asset Management (infrastructure debt platform)CrusoeSeries E (initial closing)$1.4B$10BParticipant

Sep 30, 2025CCerebrasSeries G$1.1B$8.1BParticipant

May 01, 2024CCoreWeaveNeocloudsCoreWeave, Inc. is a GPU-focused “AI-native” cloud infrastructure provider delivering compute, storage, and…$32.8BraisedRecent roundsDebt financing (delayed draw term loan facility / DDTL 5.5) · Aug 2026$2.6B · Not specified in the sourced text excerptDebt financing (loan facility) · 2026-04-??$8.5B · Not specified in the sourced text excerptPIPE / secondary primary common stock investment (equity) · 2026-03-??$2B · NVIDIACoreWeaveSeries C$1.1B—Participant

Jan 15, 2026PParloaSeries D$350M$3BParticipant

Feb 05, 2026BBasetenSeries E$300M$5BParticipant

Sep 10, 2024GGleanSeries E$260M$4.6BLead

Nov 10, 2021CCerebrasSeries F$250M$4BParticipant

Jun 10, 2025GGleanSeries F$150M$7.2BParticipant

May 06, 2025PParloaSeries C$120M$1BLead

Nov 19, 2025PProfluentVenture financing (co-led as described)$106M—Lead

Apr 24, 2024PParloaSeries B$66M—Lead