# Crusoe raises $3.9B Series F; IREN lands $9.7B Microsoft cloud deal

Digest AI · Business & Funding · published 2026-09-17T17:41:02Z · updated 2026-09-19T07:27:00Z

Canonical: https://digestai.news/story/crusoe-raises-3-9-billion-series-f-valuing-company-at-30-9-billion

## Summary

Two AI‑infrastructure firms announced major financial milestones. Crusoe disclosed an initial closing of a $3.9 billion Series F round that values the company at $30.9 billion, with the round co‑led by Atreides Management, Mubadala Capital and Valor Equity Partners. The funding will be used to expand its vertically‑integrated AI factories and Crusoe Cloud. Meanwhile, IREN reported that it has begun delivering on a five‑year, $9.7 billion cloud services agreement with Microsoft, including a 50‑megawatt liquid‑cooled deployment at its Texas campus and a rapid expansion plan to reach 480 megawatts of AI‑cloud capacity in 2026.

The two outlets differ on the details they highlight. Unite.ai lists a $140 billion total contracted value for Crusoe, more than 6 GW of gross capacity and a long investor roster, while TechCrunch emphasizes a $13 billion Jane Street contract, new board members and a potential IPO. Yahoo Finance focuses solely on IREN’s Microsoft deal and its capacity growth, which the other two pieces do not mention.

## Key points

- Crusoe closed a $3.9 billion Series F round at a $30.9 billion valuation, co‑led by Atreides Management, Mubadala Capital and Valor Equity Partners.
- IREN signed a $9.7 billion five‑year cloud services agreement with Microsoft, delivering a 50‑MW deployment in Texas.
- Unite.ai reports $140 billion contracted value and >6 GW capacity for Crusoe; TechCrunch reports a $13 billion Jane Street contract and new board members.

## Why it matters

The influx of billions into AI‑infrastructure firms signals rapid scaling of compute capacity, intensifying competition for AI workloads and shaping the economics of future AI services.

## How the reports compare

Agree: All three pieces report that an AI‑infrastructure company announced a major new financial milestone.

Differ:
- Unite.ai reports Crusoe’s total contracted value at $140 billion and gross capacity over 6 GW, figures not mentioned by TechCrunch.
- TechCrunch reports a $13 billion five‑year cloud contract with Jane Street and new board members, details absent from Unite.ai.
- Yahoo Finance reports IREN’s $9.7 billion Microsoft cloud services agreement and 480 MW capacity in 2026, which the other two articles do not cover.

## Sources

1. [Crusoe Secures $3.9B Series F at $30.9B Valuation to Build AI Factories](https://unite.ai/crusoe-secures-3-9b-series-f-at-30-9b-valuation-to-build-ai-factories) (Unite.AI, 2026-09-17)
2. [1 Year Into the Microsoft Deal, IREN Is Delivering and a Rally May Follow Soon](https://finance.yahoo.com/technology/ai/articles/1-microsoft-deal-iren-delivering-142734921.html) (finance.yahoo.com, 2026-09-19)
3. [Crusoe raises $3.9B to build massive data centers and small modular “AI factories”](https://techcrunch.com/2026/09/17/crusoe-raises-3-9b-to-build-massive-data-centers-and-small-modular-ai-factories) (TechCrunch AI, 2026-09-17)

Part of the developing story: [Crusoe's AI Funding and Turbine Deal Saga](https://digestai.news/thread/crusoe-raises-3-9-billion-series-f-valuing-company-at-30-9-billion) (3 stories)

## Cite

Digest AI, "Crusoe raises $3.9B Series F; IREN lands $9.7B Microsoft cloud deal", 17 September 2026, https://digestai.news/story/crusoe-raises-3-9-billion-series-f-valuing-company-at-30-9-billion

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