Ostium lists 75 perp markets and quotes leverage up to 200x on Arbitrum. The venue publishes no single maker/taker rate; the per-line schedule is on the fees page.
Ostium is a perpetuals and synthetic-futures exchange on Arbitrum, live since 2024. It does not run its own token.
The market list covers crypto, US equities, ETFs, commodities, indices and forex across 75 pairs, priced through a one-time opening fee set per pair. No explicit identity-verification requirement is stated in its Terms of Use.
Ostium does not run a long/short funding payment between traders; it charges a rollover fee tied to the cost of carrying the underlying futures contract or reference rate, plus a small fixed markup, and one side of the market can end up collecting that fee when the underlying curve favors them. The fee accrues continuously while a position is open, with its rate refreshed once a day.
Ostium signs traders in with a browser wallet, and the venue is non-custodial.
Up to 200x on listed markets.
Ostium names 11 restricted jurisdictions in its terms.
Fees, leverage, sign-up and markets on other perp DEXes.
Perpetual markets for stocks, gold, indices and pre-IPO names — settled on-chain, no wallet-to-exchange transfers.
