Funding round
PsiQuantum Series E
PsiQuantum, which works in fault-tolerant quantum computing system deployment in Palo Alto, raised $1.00B in a Series E round announced on 1 Sep 2025, led by BlackRock, Temasek and Baillie Gifford, at a $7.00B post-money valuation. 15 firms took part. It is PsiQuantum's sixth venture round on record; the one before was a Growth in Apr 2024.
$1.00B
Amount raised
$7.00B
Post-money valuation
$6.00B pre-money
15
Investors
3 leads
2.2x
Step-up from the Series D
$3.15B in Jul 2021
14%
Stake sold
new money over the post-money
Valuation
What this round says about the price
This round priced PsiQuantum at $7.00B after the new money, 2.2 times the $3.15B of its Series D (Jul 2021). The $1.00B bought investors about 14% of the company. It came 17 months after PsiQuantum's Growth. It is 42% of the $2.35B PsiQuantum has raised in the venture rounds on record. No later venture round is on record for PsiQuantum.
PsiQuantum's funding rounds
PsiQuantum has 6 venture rounds on record and 2 other deals. This one is highlighted.
- Series A 1 Jun 2016, led by Playground $14M
- Series B 1 Sep 2017, led by Founders Fund $50M
- Series C 1 Nov 2019, led by M12 $230M
- Series D 27 Jul 2021, led by BlackRock $450M$3.15B post-money
- Growth 1 Apr 2024, led by QIC $610M
- Other not a venture round 30 May 2025, led by BlackRock $22M
- Series E this round 1 Sep 2025, led by BlackRock, Temasek and Baillie Gifford $1.00B$7.00B post-money
- Grant not a venture round 27 Jul 2026 $125M
Investors
Who put money in
BlackRock, Temasek and Baillie Gifford led the round with 12 other firms.
Lead investors
- BlackRock new investor
- Temasek backs 195 venture-backed companies new investor
- Baillie Gifford new investor
Also in the round
- Macquarie backs 52 venture-backed companies new investor
- Ribbit backs 126 venture-backed companies new investor
- NVentures new investor
- Adage Capital Management new investor
- Qatar Investment Authority backs 71 venture-backed companies new investor
- backs 17 venture-backed companies new investor
- Morgan Stanley backs 120 venture-backed companies new investor
- 1789 Capital new investor
- S Ventures (SentinelOne) new investor
- backs 101 venture-backed companies new investor
- Third Point Ventures new investor
- T. Rowe Price Associates, Inc. new investor
Use of proceeds
What the money is for
According to the announcement, the money goes to product development, geographic expansion and scaling operations.
- Product development
- Geographic expansion
- Scaling operations
Comparable rounds
How it compares
The closest in time: Series E rounds in any sector within 6 months:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Oura Medical Supply Manufacturers | 22 Sep 2025 | $875M | $11.00B | not named |
| ID.me Tech Companies | 3 Sep 2025 | $340M | $2.00B | Ribbit |
| Divergent Technologies Auto Parts Manufacturers | 15 Sep 2025 | $290M | $2.30B | Rochefort |
| Tech Companies | 29 Sep 2025 | $75M | $1.40B | Peak XV Partners |
| Kin Insurance Insurance - Agents, Carriers & Brokers | 8 Sep 2025 | $50M | not disclosed | QED Investors and Activate Capital |
| Payment Processing & Point of Sale | 16 Sep 2025 | $50M | $737M | AVP |
| Crusoe Hosting & Cloud Infrastructure Providers | 24 Oct 2025 | $1.38B | $10.00B | Valor and Mubadala Capital |
| Deel Software Development Services | 20 Oct 2025 | $300M | $17.30B | Ribbit and Andreessen Horowitz |
Sources
Where this comes from
Reported by 6 sources.
Questions
Frequently asked
How much did PsiQuantum raise in its Series E round?
PsiQuantum raised $1.00B in its Series E round, announced in Sep 2025.
Who led PsiQuantum's Series E round?
BlackRock, Temasek and Baillie Gifford led it, with Macquarie, Ribbit, NVentures, Adage Capital Management and Qatar Investment Authority and 7 more.
What was PsiQuantum's valuation at the Series E round?
$7.00B post-money ($6.00B pre-money).