Funding round
PsiQuantum Series B
PsiQuantum, which works in fault-tolerant quantum computing system deployment in Palo Alto, raised $50M in a Series B round announced on 1 Sep 2017, led by Founders Fund. 1 firm took part. It is PsiQuantum's second venture round on record; the one before was a Series A in Jun 2016.
$50M
Amount raised
Not disclosed
Post-money valuation
1
Investors
1 lead
Valuation
What this round says about the price
PsiQuantum did not disclose a valuation in this round. It came 15 months after PsiQuantum's Series A. It is 2.1% of the $2.35B PsiQuantum has raised in the venture rounds on record. PsiQuantum raised again 26 months later: a Series C round of $230M in Nov 2019. Its next priced round, a Series D in Jul 2021, valued it at $3.15B.
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 this round 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 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
Founders Fund led the round.
Lead investor
- Founders Fund backs 368 venture-backed companies new investor
Comparable rounds
How it compares
The closest in time: Series B rounds in any sector within 6 months:
| Company | Announced | Amount | Post-money | Led by |
|---|---|---|---|---|
| Tech Companies | 14 Sep 2017 | $42M | not disclosed | not named |
| Insurance - Agents, Carriers & Brokers | 19 Sep 2017 | $40M | not disclosed | Accel |
| Devo Tech Companies | 28 Sep 2017 | $35M | not disclosed | Insight Partners |
| Food Production | 14 Sep 2017 | $35M | not disclosed | S2G Investments and Bunge Ventures Ltd. |
| Tech Companies | 26 Sep 2017 | $32M | not disclosed | General Catalyst |
| Tech Companies | 14 Sep 2017 | $31M | not disclosed | not named |
| Cybersecurity | 14 Sep 2017 | $30M | not disclosed | JTB Corporation |
| Investment Consultants & Financial Advisors | 28 Sep 2017 | $30M | not disclosed | Eight Roads |
Sources
Where this comes from
Reported by 1 source. The deal data marks this round as not yet confirmed by an official announcement. Unconfirmed
Questions
Frequently asked
How much did PsiQuantum raise in its Series B round?
PsiQuantum raised $50M in its Series B round, announced in Sep 2017.
Who led PsiQuantum's Series B round?
Founders Fund led it.
What was PsiQuantum's valuation at the Series B round?
It was not disclosed.
Did PsiQuantum raise again after this round?
Yes: a Series C round in Nov 2019 of $230M.