Ostium
Series AOstium is a privately held company based in United States, founded in 2022. The latest disclosed round is Series A ($20m), dated Dec 03, 2025. Institutional investors on record include General Catalyst.
United States · EST 2022
What is Ostium?
Ostium is a privately held company based in United States, founded in 2022. The latest disclosed round is Series A ($20m), dated Dec 03, 2025. Institutional investors on record include General Catalyst. Platform providing on-chain perpetual swaps for stocks, indices, commodities, and FX. CrackTheDeck lists dated rounds and linked fund profiles so founders can see who is already on the cap table before a pitch. Round sizes are shown only when disclosed. Empty fields mean the figure was not in those records. Open a fund name to read that firm's thesis, reported AUM, and recent dated deals. This page is compiled from financings linked to catalog funds. It is not a complete cap table. Founders use this card to check the latest disclosed round, amount, and syndicate before a meeting.
Which funds backed Ostium?
Who invested in Ostium?
Funds on the dated round table. Open a name to read the fund card.
| Investor | Round | Amount | Date |
|---|---|---|---|
| General Catalyst | Series A | $20m | Dec 03, 2025 |
What do founders ask about Ostium?
What is Ostium?
Ostium is a privately held company based in United States, founded in 2022. The latest disclosed round is Series A ($20m), dated Dec 03, 2025. Institutional investors on record include General Catalyst. Platform providing on-chain perpetual swaps for stocks, indices, commodities, and FX. CrackTheDeck lists dated rounds and linked fund profiles so founders can see who is already on the cap table before a pitch. Round sizes are shown only when disclosed. Empty fields mean the figure was not in those records. Open a fund name to read that firm's thesis, reported AUM, and recent dated deals. This page is compiled from financings linked to catalog funds. It is not a complete cap table. Founders use this card to check the latest disclosed round, amount, and syndicate before a meeting.
What was Ostium's last funding round?
Ostium's latest disclosed round is Series A at $20m (Dec 03, 2025).
Who invested in Ostium?
Ostium has 1 institutional investors on this page, including General Catalyst.
How does CrackTheDeck cover Ostium?
This startup card lists dated rounds and linked fund profiles so founders can see who is already in the cap table before a pitch.
How is this page compiled?
Round, amount, and investor names on the Ostium card come from dated financings linked to fund profiles in CrackTheDeck. Empty fields mean the figure was not in those records. Updated Aug 2026.