Nothing comparable since the round — shown at its early-stage round, Nov 2025 ($10.8B post-money).
- ·Every dated print: 1 trade with prices and structures
- ·2 fund marks: filer, period, implied $/share
Membership and data by Private Market View
Valuation timeline
0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026Membership and data by Private Market View
Quantinuum funding history
1 rounds| Date | Round | Raised | Post-money | $/share |
|---|---|---|---|---|
| Aug 2025 | Later Stage VC | $838.8M | ▮ | ▮ |
Membership and data by Private Market View
Quantinuum valuation
Quantinuum is valued at approximately $10.8 billion as of Oct 2026. The figure is set by institutional fund marks. The reference point is its early-stage round in Nov 2025, at a $10.8 billion post-money valuation.
Recent activity
In the last 90 days, Quantinuum's record added 2 institutional fund marks (latest period Jul 2026).
How much has Quantinuum raised?
Quantinuum has raised $1.2 billion in total; 1 of its rounds is on record. The largest on record was an $839 million later-stage round in Aug 2025.
Quantinuum has filed 2 Form Ds with the SEC, most recently in Nov 2025 ($839 million sold to 50 investors).
Quantinuum secondary market activity
1 secondary trade in Quantinuum shares is on record, in Mar 2026. Exact dates, prices and structures are available to Pro members.
Institutional holders and vehicles
1 SEC-registered fund reported 2 fair-value marks on Quantinuum for Jul 2026, in their N-PORT filings. Filer-level marks and implied per-share values are available to Pro members.
How Quantinuum'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 Quantinuum, 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 institutional fund marks. Question about this number? Full methodology →
Frequently asked about Quantinuum
- What is Quantinuum worth?
- Quantinuum is valued at $10.8B as of Oct 2026. Nothing comparable since the round — shown at its early-stage round, Nov 2025 ($10.8B post-money).
- How much has Quantinuum raised?
- Quantinuum has raised $1.2B in total funding across 1 recorded rounds.
- When did Quantinuum last raise?
- Quantinuum last raised in Aug 2025 (Later Stage VC), raising $838.8M.