Down 31% since its Series E, Sep 2025 ($7.0B post-money). The secondary market quotes about $27 per share.
- ·Every dated print: 8 trades with prices and structures
- ·10 fund marks: filer, period, implied $/share
- ·The monthly marks chart, 46 months in dollars
- ·Price per share on 4 rounds
Membership and data by Private Market View
Valuation timeline
5 priced rounds · 32 daily marks since · Dec 2016 – Oct 2026Membership and data by Private Market View
Secondary market
monthly marks · 46 months · Jan 2023 – Oct 2026Membership and data by Private Market View
PsiQuantum funding history
9 rounds| Date | Round | Raised | Post-money | $/share |
|---|---|---|---|---|
| Sep 2025 | Series E | $1.0B | ▮ | ▮ |
| May 2025 | Early Stage VC | $22.0M | ▮ | ▮ |
| Mar 2022 | Secondary Transaction - Private | $520K | ▮ | ▮ |
| Dec 2021 | Secondary Transaction - Private | — | ▮ | ▮ |
| Oct 2021 | Series D | $450.0M | ▮ | ▮ |
| Dec 2019 | Series C | $150.0M | ▮ | ▮ |
| + 3 earlier rounds · a free account shows the full history | ||||
Membership and data by Private Market View
PsiQuantum valuation
PsiQuantum is valued at approximately $4.8 billion as of Oct 2026. The figure is set by secondary market price. The secondary market quotes about $27 per share. The reference point is its Series E in Sep 2025, at a $7 billion post-money valuation; the current figure is down 31% since.
PsiQuantum ranks 37th by valuation and 26th by capital raised among the private companies PrivateMarketView tracks.
How much has PsiQuantum raised?
PsiQuantum has raised $1.7 billion across 9 recorded rounds since 2015. The largest was a $520,000 private secondary transaction in Mar 2022; the most recent was a $1 billion Series E in Sep 2025. 5 of the rounds disclosed a post-money valuation.
PsiQuantum has filed 1 Form D with the SEC, most recently in May 2025 ($22 million sold to 1 investor).
PsiQuantum secondary market activity
8 secondary trades in PsiQuantum shares are on record, between Jun 2025 and May 2026. The busiest recent months were Dec 2025 (4 prints). Exact dates, prices and structures are available to Pro members.
A monthly secondary-market price series for PsiQuantum runs from Jan 2023 to Oct 2026 (46 months).
Institutional holders and vehicles
1 SEC-registered fund reported 10 fair-value marks on PsiQuantum between May 2025 and May 2026, in their N-PORT filings. The latest fund marks sit apart from the current valuation. Filer-level marks and implied per-share values are available to Pro members.
In the last 12 months, 7 investment vehicles were formed to buy PsiQuantum shares, reporting $8.8 million sold to 170 investors across 7 sponsors, per SEC Form D filings (most recent Apr 2026).
Comparable companies
Comparable computers, parts and peripherals names by valuation on PrivateMarketView: Oxide Computer ($1.6 billion), Quantum Machines ($700 million) and MatX ($362 million).
How PsiQuantum's valuation is determined
Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.
For PsiQuantum, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by secondary market price. Question about this number? Full methodology →
Frequently asked about PsiQuantum
- What is PsiQuantum worth?
- PsiQuantum is valued at $4.8B as of Oct 2026. Down 31% since its Series E, Sep 2025 ($7.0B post-money).
- How much has PsiQuantum raised?
- PsiQuantum has raised $1.7B in total funding across 9 recorded rounds.
- When did PsiQuantum last raise?
- PsiQuantum last raised in Sep 2025 (Series E), raising $1.0B.