Circle names fomo among Arc's day-one trading apps
Circle launched the Arc mainnet on 16 September 2026 and named fomo, with Aero and Uniswap, as the apps that "anchor Arc's day one trading infrastructure." DefiLlama's fomo fees on Arc start that day: $624,515 in the rest of September, then $33,269 in October.
What happened
Circle, the company that issues the USDC dollar token, launched the mainnet of Arc, its own Layer 1 blockchain, on 16 September 2026. Its press release lists more than 100 apps live on day one and singles out three for trading: “Aero, fomo, and Uniswap anchor Arc’s day one trading infrastructure.” fomo appears again in a longer list of trading apps that includes Pump.fun, Robinhood and Uniswap.
fomo added Arc to the chains its single cash balance can trade on. Its help centre lists Arc among the networks where a trade costs 0.50% plus network fees, and where you can deposit and withdraw USDC. It warns that if you withdraw on Arc, you should first check that the receiving wallet or exchange accepts USDC on Arc.
What the data shows
DefiLlama’s fomo series has its first Arc fees on 16 September, the launch day.
| Period | fomo fees on Arc |
|---|---|
| 16 to 30 September 2026 | $624,515 |
| October 2026 | $33,269 |
| 30 days to 8 November | $13,936 |
October was about 95% below the second half of September. Arc is now one of fomo’s smallest chains by fees. These EVM-chain figures come from a data table fomo itself publishes, which DefiLlama reads; they are not independently derived.
What we could not verify
Circle’s release does not say what the partnership involves or whether launch incentives drove September’s trading. We do not know why activity fell. For how Arc fits with fomo’s other chains, see Arc on fomo and fomo’s supported chains.
How we verify: every entry is checked against a primary source (fomo's help centre, terms, blog, release notes or X posts, read through Internet Archive copies where fomo's site blocks automated readers; or a partner's own announcement), chain data, or at least two independent outlets, before it is published. JomoBench is independent and unofficial: we are not fomo or FOMO Labs Inc. No price calls and no coin picks. Most small tokens lose most of their value. All news · Fee and terms change log · Methodology