DayOne's last reported valuation, Dec 2024. Nothing priced has surfaced since.
- ·The complete investor list: 23 names
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Valuation timeline
0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026Membership and data by Private Market View
DayOne funding history
2 rounds| Date | Round | Raised | Post-money | $/share |
|---|---|---|---|---|
| Jan 2026 | Later Stage VC (Series C) | $2.0B | ▮ | ▮ |
| Dec 2024 | Early Stage VC (Series B) | $1.2B | ▮ | ▮ |
Membership and data by Private Market View
DayOne valuation
DayOne's last reported valuation was $3.7 billion in Dec 2024. No priced round, secondary trade or fund mark has surfaced since.
How much has DayOne raised?
DayOne has raised $12.2 billion in total; 2 of its rounds are on record. The largest on record was a $2 billion Series C in Jan 2026.
Institutional holders and vehicles
In the last 12 months, 1 investment vehicle was formed to buy DayOne shares, reporting $15 million sold to 1 investor, per SEC Form D filings (most recent Jun 2026).
Comparable companies
Comparable systems and information management names by valuation on PrivateMarketView: Together AI ($8.3 billion), DataBank (Systems and Information Management) ($2.2 billion) and Wasabi ($1.8 billion).
How DayOne'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 DayOne, 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 last reported valuation. Question about this number? Full methodology →
Frequently asked about DayOne
- What is DayOne worth?
- DayOne is valued at $3.7B as of Oct 2026. DayOne's last reported valuation, Dec 2024. Nothing priced has surfaced since.
- How much has DayOne raised?
- DayOne has raised $12.2B in total funding across 2 recorded rounds.
- When did DayOne last raise?
- DayOne last raised in Jan 2026 (Later Stage VC (Series C)), raising $2.0B.