Ostium

Market position

Ostium positions itself apart from crypto-native perpetuals venues such as Hyperliquid, Lighter and Aster, stating it aims to compete with retail brokerages such as Robinhood, eToro and IG and to disrupt the offshore CFD broker market, which its lead investor characterizes as having $10 trillion in monthly volume. The company reported that more than 95% of its open interest is tied to traditional markets and that it accounted for more than half of onchain gold perpetuals open interest during a gold rally.

Self-custody with collateral in segregated smart contracts, onchain verifiability of every fill and price, execution quoted from underlying market liquidity rather than onchain pools, breadth of real-world asset coverage in a single interface, and the ability to manage positions through any contract-enabled wallet rather than a single front-end.

Technology

Smart contracts deployed on Arbitrum with USDC collateral and settlement, segregated collateral contracts, a price oracle and automation services. Pricing is quote-based, drawing top-of-book bid/ask data from off-chain liquidity venues instead of onchain DEX liquidity, with directional flow hedged offchain via institutional partners. Additional features include Privy email/social sign-in, smart account delegation for one-click gasless trading, cross-chain deposits, exchange and credit card funding, dynamic spreads for lower-liquidity assets, and published smart contract and economic audits.

Go-to-market

Direct self-serve access through app.ostium.com with wallet or email/social sign-in, supported by documentation, a referral program, Builder Codes for third-party front-ends, and content marketing via the Ostium Insights market outlook series. New capital is being directed at expanding asset coverage and reaching non-U.S. traders outside the crypto-native base.

Crypto-native traders seeking leveraged exposure to traditional markets, and non-U.S. retail investors currently served by offshore CFD brokers; also liquidity providers depositing USDC and developers building on the protocol.

Geography

Available to users outside restricted jurisdictions; the protocol excludes the United States, United Kingdom, European Union, Philippines and comprehensively sanctioned countries. Growth focus is on non-U.S. traders seeking access to U.S. markets. Assets span US and global markets including UK, German and Japanese indices.

History

The Block reported in 2023 that Ostium had raised a $3.5 million seed round to build a perpetual exchange for real-world assets. In March 2025 the company launched Ostium V2, a platform overhaul introducing true market spreads, 2bps FX fees, off-hours limit orders, partial closes, gasless one-click trading and expanded index and FX coverage. On 3 December 2025 Ostium announced $24 million in new funding, including a $20 million Series A co-led by General Catalyst and Jump Crypto and a previously undisclosed $4 million strategic round, taking total funding to $27.8 million. Subsequent company-listed coverage in 2026 points to a decentralized execution layer with institutional hedging partners (April 2026), equity perpetuals powered by Nasdaq data (May 2026) and a new liquidity engine.

Risks & controversies

Sources note jurisdictional restrictions barring users in the US, UK, EU and other regions; the product involves high leverage (up to 200x) on perpetual derivatives; and the company operates in a crowded and rapidly changing perpetuals market. Reported metrics on volume, open interest and market share are self-reported by the company, and the ~$250M valuation was attributed to an anonymous source.