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Ostium is the onchain gateway to the world’s most liquid global markets. It offers perpetual-instrument exposure to 60 trading pairs across Stocks, ETFs, Commodities, Indices, Forex, and Crypto, with up to 200x leverage, instant settlement in USDC, self-custody, and full transparency on every fill.

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What Ostium Is

Ostium operates at the distribution layer of global markets. It consolidates global demand into a single transparent, onchain venue and routes flow to the deepest underlying liquidity for each asset. Traders deposit USDC, open leveraged long or short positions, and settle directly into their own wallet. The protocol is purpose-built to complement existing exchange and data infrastructure rather than replace it. Every fill is quoted against the most liquid source for a given pair, so execution on Ostium closely mirrors execution on the underlying market.
Ostium aims to be for global markets what stablecoins are for the dollar. Stablecoins did not replace the dollar — they extended its reach to millions of new users, generating entirely new demand for dollar-denominated assets. Ostium does the same for the world’s most liquid markets.

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How It Works

Trades settle instantly onchain in USDC through a dedicated settlement layer. Directional flow is hedged off-chain through a network of institutional partners, including Jump Trading as flagship hedging partner, prime brokers, and other major institutional partners. These partners supply pricing from the deepest underlying markets, while trader collateral remains self-custodied in segregated smart contracts and every fill remains verifiable onchain. For the full protocol architecture, including the settlement infrastructure and oracle system, see How Ostium Works.

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What You Get as a Trader

Every position you open on Ostium benefits from five structural properties:
  • Self-custody at all times. Collateral lives in segregated smart contracts. Ostium cannot access or move your funds.
  • Instant settlement. When you close a position, USDC moves directly to your wallet. There is no multi-day settlement delay.
  • Full transparency. Every historical fill is viewable onchain, and every price used to fill a trade is publicly auditable.
  • Deep, dynamic liquidity. Liquidity scales with the depth of the underlying markets, not with a fixed onchain pool. Slippage on large orders reflects venue depth, and execution closely mirrors the underlying exchange.
  • Direct protocol access. Any wallet that can sign a transaction can open, adjust, or close positions on Ostium. You’re never locked into a single interface.

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At a Glance

$50B+

Cumulative volume

~1M

Total trades

25K+

Traders

60

Trading pairs
Ostium is deployed on Arbitrum, settles in USDC, and supports up to 200x leverage across Stocks, ETFs, Commodities, Indices, Forex, and Crypto.

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FAQ

Anyone with a compatible wallet and USDC on Arbitrum can trade on Ostium. The protocol is non-custodial, meaning you retain control of your funds at all times. Regional eligibility and restrictions are governed by the Terms of Use.
Trades settle instantly onchain through Ostium’s onchain settlement layer. Directional risk is routed to a network of institutional partners, including Jump Trading as flagship hedging partner, prime brokers, and other major institutional partners. These partners provide pricing from the most liquid underlying markets, so fills on Ostium closely mirror the underlying exchange.
Ostium offers 60 perpetual instrument trading pairs across six asset classes: Stocks, ETFs, Commodities, Indices, Forex, and Crypto. Leverage goes up to 200x on select assets. The full list with per-pair leverage caps and market hours is on the Markets page.
  • Connect Your Account — Set up a wallet and fund it with USDC.
  • Opening a Trade — Walk through your first position from collateral to close.
  • How Ostium Works — Two-layer architecture, settlement and hedging, oracle system, and the four core services that run the protocol.