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Firm & fund profile / Sourced portfolio

Altimeter

Tracked participation in 10 Atlas companies, with 5 explicitly attributed leads.

Firm website ↗

10portfolio companies

22round participations

5lead positions

$66.9Bled round total

Conviction

Most recent leads

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

May 2026AnthropicSeries H$65Bat $965B valuation Jul 2025ParloaSeries B$66M Sep 2024GleanSeries E$260Mat $4.6B valuation Apr 2024ParloaSeries B$66M UndatedBasetenSeries F$1.5Bat $13B valuation

Capital activity

Portfolio

CompanyLatest valuationFirst → latestRoundsRoleAttributed partner

AAnthropic$965BSep 2025 → May 20263 rounds1 led—

OOpenAIFrontierOpenAI is an AI research and deployment company focused on building safe and beneficial artificial general…$852Bvaluation$291.6BraisedRecent roundsIssuer tender / employee stock tender (secondary liquidity; self-funded buyback) · Aug 2026$7Bcommitted capital funding round (latest) · Mar 2026$122B · Altimeter, Amazon +26Primary funding round (committed capital) · Feb 2026$110B · Amazon, Microsoft +2OpenAI$852BMar 2025 → Mar 20262 roundsParticipant—

CCerebras$23BAug 2017 → Feb 20265 roundsParticipant—

PParloa$3BApr 2024 → Jan 20264 rounds2 led—

PProfluent—Nov 2025 → Nov 20251 roundParticipant—

CCrusoeNeocloudsCrusoe is a vertically integrated AI infrastructure provider built around energy-first compute. The company says it…$10Bvaluation$3.8BraisedRecent roundsSeries E · Oct 2025$1.4B · led by Mubadala Capital, Valor Equity PartnersDebt financing (credit facility) · Jun 2025$750M · led by Brookfield Asset ManagementDebt financing (credit facility) · Mar 2025$225M · led by Upper90 Capital ManagementCrusoe$10BOct 2025 → Oct 20251 roundParticipant—

GGlean$7.2BSep 2024 → Jun 20252 rounds1 led—

AAnduril$14BAug 2024 → Aug 20241 roundParticipant—

CCoreWeaveNeocloudsCoreWeave is a publicly traded AI-infrastructure provider built around large-scale GPU clusters and software that…$19Bvaluation$24.1BraisedRecent roundsSecured debt financing facility (DDTL 5.0 closing; first publicly syndicated HPC infrastructure-backed financing vehicle) · May 2026$3.1BEquity purchase (private placement; Jane Street) · Apr 2026$1B · led by Jane Street Global Trading LLCEquity (NVIDIA investment; strategic) · Jan 2026NvidiaCoreWeave$19BMay 2024 → May 20241 roundParticipant—

BBaseten$5B— → —2 rounds1 led—

DateCompanyRoundRaisedValuationRoleEvidence

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

Mar 31, 2026OOpenAIFrontierOpenAI is an AI research and deployment company focused on building safe and beneficial artificial general…$852Bvaluation$291.6BraisedRecent roundsIssuer tender / employee stock tender (secondary liquidity; self-funded buyback) · Aug 2026$7Bcommitted capital funding round (latest) · Mar 2026$122B · Altimeter, Amazon +26Primary funding round (committed capital) · Feb 2026$110B · Amazon, Microsoft +2OpenAIcommitted capital funding round (latest)$122B$852BParticipant

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

Feb 04, 2026CCerebrasSeries H$1B$23BParticipant

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

Nov 19, 2025PProfluentSeries B$106M—Participant

Oct 24, 2025CCrusoeNeocloudsCrusoe is a vertically integrated AI infrastructure provider built around energy-first compute. The company says it…$10Bvaluation$3.8BraisedRecent roundsSeries E · Oct 2025$1.4B · led by Mubadala Capital, Valor Equity PartnersDebt financing (credit facility) · Jun 2025$750M · led by Brookfield Asset ManagementDebt financing (credit facility) · Mar 2025$225M · led by Upper90 Capital ManagementCrusoeSeries E$1.4B$10BParticipant

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

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

Jul 16, 2025PParloaSeries B$66M—Lead

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

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

Mar 31, 2025OOpenAIFrontierOpenAI is an AI research and deployment company focused on building safe and beneficial artificial general…$852Bvaluation$291.6BraisedRecent roundsIssuer tender / employee stock tender (secondary liquidity; self-funded buyback) · Aug 2026$7Bcommitted capital funding round (latest) · Mar 2026$122B · Altimeter, Amazon +26Primary funding round (committed capital) · Feb 2026$110B · Amazon, Microsoft +2OpenAIPrimary funding round$40B$300BParticipant

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

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

May 01, 2024CCoreWeaveNeocloudsCoreWeave is a publicly traded AI-infrastructure provider built around large-scale GPU clusters and software that…$19Bvaluation$24.1BraisedRecent roundsSecured debt financing facility (DDTL 5.0 closing; first publicly syndicated HPC infrastructure-backed financing vehicle) · May 2026$3.1BEquity purchase (private placement; Jane Street) · Apr 2026$1B · led by Jane Street Global Trading LLCEquity (NVIDIA investment; strategic) · Jan 2026NvidiaCoreWeaveSeries C$1.1B$19BParticipant

Apr 24, 2024PParloaSeries B$66M—Lead

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

Nov 14, 2018CCerebrasSeries D$79.8M$1.7BParticipant

Aug 31, 2017CCerebrasSeries C$65M$860.2MParticipant

UndatedBBasetenSeries E$300M$5BParticipant

UndatedBBasetenSeries F$1.5B$13BLead

DateCompanyRoundRaisedValuationRoleEvidence

Mar 31, 2026OOpenAIFrontierOpenAI is an AI research and deployment company focused on building safe and beneficial artificial general…$852Bvaluation$291.6BraisedRecent roundsIssuer tender / employee stock tender (secondary liquidity; self-funded buyback) · Aug 2026$7Bcommitted capital funding round (latest) · Mar 2026$122B · Altimeter, Amazon +26Primary funding round (committed capital) · Feb 2026$110B · Amazon, Microsoft +2OpenAIcommitted capital funding round (latest)$122B$852BParticipant

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

Mar 31, 2025OOpenAIFrontierOpenAI is an AI research and deployment company focused on building safe and beneficial artificial general…$852Bvaluation$291.6BraisedRecent roundsIssuer tender / employee stock tender (secondary liquidity; self-funded buyback) · Aug 2026$7Bcommitted capital funding round (latest) · Mar 2026$122B · Altimeter, Amazon +26Primary funding round (committed capital) · Feb 2026$110B · Amazon, Microsoft +2OpenAIPrimary funding round$40B$300BParticipant

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

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

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

UndatedBBasetenSeries F$1.5B$13BLead

Oct 24, 2025CCrusoeNeocloudsCrusoe is a vertically integrated AI infrastructure provider built around energy-first compute. The company says it…$10Bvaluation$3.8BraisedRecent roundsSeries E · Oct 2025$1.4B · led by Mubadala Capital, Valor Equity PartnersDebt financing (credit facility) · Jun 2025$750M · led by Brookfield Asset ManagementDebt financing (credit facility) · Mar 2025$225M · led by Upper90 Capital ManagementCrusoeSeries E$1.4B$10BParticipant

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

May 01, 2024CCoreWeaveNeocloudsCoreWeave is a publicly traded AI-infrastructure provider built around large-scale GPU clusters and software that…$19Bvaluation$24.1BraisedRecent roundsSecured debt financing facility (DDTL 5.0 closing; first publicly syndicated HPC infrastructure-backed financing vehicle) · May 2026$3.1BEquity purchase (private placement; Jane Street) · Apr 2026$1B · led by Jane Street Global Trading LLCEquity (NVIDIA investment; strategic) · Jan 2026NvidiaCoreWeaveSeries C$1.1B$19BParticipant

Feb 04, 2026CCerebrasSeries H$1B$23BParticipant

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

UndatedBBasetenSeries 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$1BParticipant

Nov 19, 2025PProfluentSeries B$106M—Participant

Nov 14, 2018CCerebrasSeries D$79.8M$1.7BParticipant

Jul 16, 2025PParloaSeries B$66M—Lead

Apr 24, 2024PParloaSeries B$66M—Lead

Aug 31, 2017CCerebrasSeries C$65M$860.2MParticipant