# Lambda funding: rounds and investors

> Lambda has raised $6.8B across 4 rounds since 2024. Investors include Alumni Ventures, Gaingels and Citibank. Every round with its source.

Source: https://millionrounds.com/company/lambda (Millionrounds; every figure on the page links to its filing or article)

United States · [Growth startup](https://millionrounds.com/companies)

# Who invested in *Lambda*

4 rounds we have observed, with the 10 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

AI Cloud Construction Semiconductors

Raised 1 month ago Valuation: $2.0B, Oct 2024

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Funding summary Updated 5 Nov 2026

**$6.8B** raised across 4 rounds since 2024, from 7 sources

**$320M** Series C **$1.5B** Series E **$1.0B** Debt **$4.0B** Growth

- **Latest round:** Growth, $4.0B Oct 2026
- **Led by:** Coatue and Clarus Ventures
- **Step-up i:** 4×
- **Investors:** 10 (4 led)

See who backed them

## The funding story

Each circle is a round, placed by date and sized by amount. The line above is the running total.

2024 2025 2026

**$320M** Series C

**$1.5B** Series E

**$1.0B** Debt

**$4.0B** Growth

- **First round:** Series C, $320M
- **Biggest round:** $4.0B
- **Usual gap between rounds:** 5 months

## The rounds

- **Oct 2026** Growth **$4.0B** *2 new* [Coatue](https://millionrounds.com/fund/coatue-management) Lead [Clarus Ventures](https://millionrounds.com/fund/blackstone) Lead Reported by Leap Ventures
- **May 2026** Debt **$1.0B** *1 new* *5 returning* [JP Morgan](https://millionrounds.com/fund/jpmorgan) Lead [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Gaingels](https://millionrounds.com/fund/gaingels) [Citibank](https://millionrounds.com/fund/citi) [B Capital](https://millionrounds.com/fund/b-capital) [NVIDIA](https://millionrounds.com/fund/nvidia) Reported by Firms' own news pages and 2 others
- **Nov 2025** Series E **$1.5B** *6 new* [TWG Global](https://millionrounds.com/fund/twg-global) Lead [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Gaingels](https://millionrounds.com/fund/gaingels) [Citibank](https://millionrounds.com/fund/citi) [B Capital](https://millionrounds.com/fund/b-capital) [NVIDIA](https://millionrounds.com/fund/nvidia) Reported by Crunchbase News and 1 other
- **Feb 2024** Series C **$320M** *1 new* [Alpha Square Group](https://millionrounds.com/fund/alpha-square-group) Reported by Alpha Square Group

## Founders and team

From Lambda's own website: 9 on the team.

- **Charles Fisher** chief.financial.officer()
- **David Connolly** chief.legal.officer()
- **Leonard Speiser** chief.operating.officer()
- **Matthew Worby** chief.people.officer()
- **Michael Balaban** chief.product.officer()
- **Michel Combes** chief.executive.officer()
- **Stephen Balaban** chief.technology.officer()
- **Steve Stewart** chief.infrastructure.officer()
- **Jerry Hunter** vice.chairman.compute.delivery()

## Who was in which round

The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.

**Series C** 2024 **Series E** 2025 **Debt** 2026 **Growth** 2026 [Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) [Gaingels](https://millionrounds.com/fund/gaingels) [Citibank](https://millionrounds.com/fund/citi) [B Capital](https://millionrounds.com/fund/b-capital) [NVIDIA](https://millionrounds.com/fund/nvidia) [Coatue](https://millionrounds.com/fund/coatue-management) L [JP Morgan](https://millionrounds.com/fund/jpmorgan) L [Clarus Ventures](https://millionrounds.com/fund/blackstone) L [TWG Global](https://millionrounds.com/fund/twg-global) L [Alpha Square Group](https://millionrounds.com/fund/alpha-square-group)

## Everyone who backed them

[Alumni Ventures](https://millionrounds.com/fund/us-strategic-tech-fund-an-alumni-ventures-fund) VC firm **2** rounds

[Gaingels](https://millionrounds.com/fund/gaingels) Private equity **2** rounds

[Citibank](https://millionrounds.com/fund/citi) Growth equity **2** rounds

[B Capital](https://millionrounds.com/fund/b-capital) VC firm **2** rounds

[NVIDIA](https://millionrounds.com/fund/nvidia) Company **2** rounds

[Coatue](https://millionrounds.com/fund/coatue-management) VC firm **1** round, led 1

[JP Morgan](https://millionrounds.com/fund/jpmorgan) Investment bank **1** round, led 1

[Clarus Ventures](https://millionrounds.com/fund/blackstone) VC firm **1** round, led 1

[TWG Global](https://millionrounds.com/fund/twg-global) Growth equity **1** round, led 1

[Alpha Square Group](https://millionrounds.com/fund/alpha-square-group) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=lambda).

## Also claim to have backed them

These 14 firms list Lambda as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.

[Gradient](https://millionrounds.com/fund/gradient-ventures) VC firm Per its own site

[1517 Fund](https://millionrounds.com/fund/1517-fund) VC firm Per its own site

[Mercato Partners](https://millionrounds.com/fund/mercato-partners) VC firm Per its own site

[Air Street Capital](https://millionrounds.com/fund/air-street-capital) VC firm Per its own site

[Savano Capital Partners](https://millionrounds.com/fund/savano-capital-partners) VC firm Per its own site

[Dolores Capital](https://millionrounds.com/fund/dolores-capital) Family office Per its own site

[InvestX Capital](https://millionrounds.com/fund/investx-capital) VC firm Per its own site

[LFG Capital Management LLC](https://millionrounds.com/fund/lfg-capital-management-llc) Investor Per its own site

[LFG Holdings](https://millionrounds.com/fund/lfg-ventures) VC firm Per its own site

[Launchbay Capital](https://millionrounds.com/fund/launchbay-capital) Growth equity Per its own site

[Prosto VC](https://millionrounds.com/fund/prosto-vc) Angel network Per its own site

[Quantra Ventures](https://millionrounds.com/fund/quantra-ventures) VC firm Per its own site

[Rigby Technology Investments](https://millionrounds.com/fund/rigby-technology-investments) Growth equity Per its own site

[Selective VC](https://millionrounds.com/fund/selective-vc) VC firm Per its own site

## Quick answers about Lambda

### Who invested in Lambda?

Lambda's investors include Alumni Ventures, Gaingels, Citibank, B Capital and NVIDIA, and 5 more on record. Coatue led its latest round.

### How much has Lambda raised?

Lambda has raised $6.8B across 4 rounds since 2024.

### When did Lambda last raise?

Lambda's most recent round was a Growth of $4.0B in Oct 2026, led by Coatue.

### What was Lambda's biggest round?

Its most recent round, $4.0B in Oct 2026, is also its largest on record.

### Who backed Lambda first?

Lambda's first round on record, in Feb 2024, was backed by Alpha Square Group.

### What stage is Lambda at?

Lambda's latest named round is a Growth, in Oct 2026.

### Where is Lambda based?

Lambda is based in the United States.

### Who led Lambda's rounds?

TWG Global led the Series E in 2025; JP Morgan led the Debt in 2026; Coatue led the Growth in 2026.

## Companies like Lambda

In the same sector, and raised in the last eighteen months.

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