Sign in

• Buy @ / Sell @ — the venue and price of each leg: buy at the lowest ask on one exchange, sell at the highest bid on another. Only identical symbols are compared.
• Spread — gross difference between the legs: (sell − buy) / buy × 100, before any costs.
• Net* — spread minus standard taker fees of BOTH entry legs (Binance 0.05%, Bybit 0.055%, Bitget 0.06%, BingX 0.05%; VIP tiers pay less). Closing both positions later costs about the same again, so a full round trip needs roughly double the fee. Negative net = fees already eat the spread.
• Top size, $ — what is actually available at the top of both books: min(ask size, bid size) × price. A juicy spread on $50 of depth is not an opportunity.
• 24h vol, $ — 24h turnover of the contract (max across venues) — a liquidity filter: thin contracts breed phantom spreads.
• Age — age of the older of the two quotes; quotes older than ~10s are dropped, so a stalled feed cannot fake a spread.
• Highlighted row — the spread is above the alert threshold; these episodes are also logged to the “Threshold hits” feed below.

How to use it

• This is a monitoring tool, not an execution button: visible spreads are usually consumed by fees, tiny top-of-book size and latency long before a retail order would arrive.
• Read Net and Top size together: a positive net on a $50 size is noise; a persistent positive net on real size and volume is what this table exists to surface.
• A spread that lives for minutes on a liquid pair usually reflects a funding/basis difference between the venues — a reason to investigate, not to rush an order.
• One venue spreading across many symbols at once usually means its feed lags or its index differs; single spikes on illiquid names are almost always stale-quote phantoms or delistings.