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Index and Union Square Back Fomo in $75M Series B at $550 Million Valuation

This funding scales engineering hiring, funds potential acquisitions, signals institutional confidence in a gasless noncustodial trading app challenging major trading platforms.

Overview

  • Fomo announced a $75 million Series B led by Index Ventures on Monday, valuing the startup at $550 million and listing Union Square Ventures as a participant.
  • The company says it adds about 3,500 new users per day and has seen rapid growth in revenue and trading volume since its May 2025 launch.
  • Fomo’s product is a noncustodial, multichain, gasless trading app that includes social features such as leaderboards, trade feeds, copy trading, and one‑click onboarding with Apple Pay.
  • Founders who previously worked at the decentralized perpetuals exchange dYdX say the new capital will be used to hire engineers aggressively and to pursue possible acquisitions to speed expansion.
  • Investors framed the round as a selective vote of confidence in consumer blockchain trading and a bet that Fomo can broaden beyond crypto to compete with centralized exchanges and mobile trading apps.