Comparison
Lighter vs Arcus
Lighter and Arcus both trade stocks alongside crypto, and both are live on Coinner with the full Grid, DCA, copy, TradingView, and market maker bot suite. Lighter is a zero-knowledge rollup on Ethereum with USDC collateral, where Standard accounts pay no trading fees. Arcus, built by the dYdX team, runs on Robinhood Chain and makes tokenized single-stock and ETF perps a core offering from one USDG balance. Here is how they compare.
Side by side
How they compare
| Feature | Lighter | Arcus |
|---|---|---|
| Chain | ZK rollup on Ethereum | Robinhood Chain |
| Order book | Central limit order book, matching proven with ZK proofs | Off-chain matching, on-chain settlement |
| Exchange lists | Crypto, stock, index, commodity & FX perps, plus spot | Crypto, single-stock & ETF perps, plus spot Stock Tokens |
| Coinner runs bots on | Perps only (crypto plus stock/index/commodity/FX); not spot | Perps only (crypto + stock/ETF); not spot Stock Tokens |
| Markets | 200+ perpetuals (crypto, US stocks, indexes, metals, oil, FX) | Crypto, single-stock, commodity & index ETF perps |
| Collateral | USDC | USDG |
| Max leverage | Up to 50x (BTC, ETH) | Up to 50x |
| How Coinner connects | API key registered with one wallet signature | Trade-only API key (wallet signature) |
| Custody | Funds stay in your account | Funds stay in your account |
| Withdraw permission | Only back to your own wallet; Coinner never requests one | Never granted |
| Order limits | 30 open orders per market (Standard accounts) | Flat account-wide order cap |
| Base fees | 0% maker / 0% taker (Standard accounts) | 0.0225% taker / 0% maker |
| Bots on Coinner | Grid, DCA, Copy, TradingView, Market Maker | Grid, DCA, Copy, TradingView, Market Maker |
| Copy-trading leaderboard | Yes | Yes |
| Sign-up reward | None (sign-up through Coinner required) | None (sign-up through Coinner required) |
| Cost on Coinner | Free | Free (referral commission share) |
Verdict
Which should you choose?
Choose Lighter for zero fees on Standard accounts, USDC collateral, and a wide spread of index, commodity, and FX perps. Choose Arcus for tokenized single-stock and ETF perps (NVDA, TSLA, SPY, QQQ, GLD) on one USDG balance, and a generous account-wide order cap. Coinner runs the same bots on both, each has a trader leaderboard, copy bots on either can follow traders on the other, and you can connect each from one account.
FAQ
Frequently asked questions
Which is cheaper, Lighter or Arcus?
Lighter Standard accounts pay 0% maker and 0% taker. Arcus charges a small taker fee that drops with volume and no maker fee at its base tier.
Can a Lighter bot copy Arcus traders?
Yes. Lighter and Arcus share the same BTC-USD style tickers on Coinner, so a copy bot on your Lighter account can follow a trader from the Arcus leaderboard on any market both list.
Do both run the market maker?
Yes. Both support post-only orders and a dead man's switch. On a Standard Lighter account the bot can move its quotes about once every two seconds, because Standard allows 60 requests a minute.
Run bots on both
Connect Lighter and Arcus from one Coinner account and trade smarter.