Ostium
formerly Ostium Labs Co.One app. Your Wallet. Every Asset.
Wilmington, United States · Founded 2023 · $27.5M raised
- Headquarters
- Wilmington, Delaware
- Employees
- 11–50
- Founded
- 2023
- Business Model
- B2C
- Website
- ostium.io
- Total Funding
- $27.5M
- Last Round
- $20.0M Series ADec 2025
- Rounds
- 3
Totals include recorded grants and other qualifying funding, not just equity. What counts toward funding.
About
Ostium is a self-custodial leveraged trading platform built on Arbitrum (Ethereum Layer 2) that enables traders to long or short stocks, indices, commodities, and FX pairs via perpetual contracts directly from their crypto wallet. Unlike centralized brokers, Ostium cannot freeze funds, restrict trading, or manipulate spreads, with all fees, volumes, and liquidity transparently on-chain. The platform supports up to 200x leverage and settles in USDC.
Summary
Ostium is a Crypto & Web3 company based in Wilmington, United States, founded in 2023. It has raised $27.5M in total across 3 rounds, most recently a $20.0M Series A round in Dec 2025. Investors include General Catalyst, Jump Crypto and Balaji Srinivasan.
Tech & App Stack
17 technologies & apps tracked
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Funding History
Dec 2025
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Funding: Seed through Series A. Amounts, valuations, and investors where available.
Investors
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