Ostium raised $24M in new funding — a $20M Series A co‑led by General Catalyst and Jump Crypto plus an undisclosed $4M strategic round — bringing total funding to $27.8M. Built on Arbitrum, Ostium offers self‑custodial on‑chain perpetual swaps tied to stocks, commodities, indices and FX with collateral held in segregated smart contracts; the protocol has processed about $25B in cumulative trading volume and over 95% of open interest is in traditional markets. The new funds will be used to expand asset coverage and scale infrastructure.

The story reports a $24M funding injection (including a $20M Series A co‑led by General Catalyst and Jump Crypto) and cites ~ $25B cumulative trading volume with >95% of open interest in traditional markets; the capital is earmarked to expand asset coverage and scale infrastructure, supporting a positive view on the protocol's growth prospects.