Prediction-Arb Live Board

Snapshot · Paper only — no orders
What is this board? This board watches the same event priced on two different sites. When buying BOTH outcomes costs less than the $1 they pay out together, the difference is locked-in profit — if the event rules match exactly.
1 · Find a pairThe same event listed on two sites, priced so both sides together cost under $1.
2 · Check the rules matchBoth sites must settle the event exactly the same way. If a rule differs, it is not a safe pair.
3 · Cover both sidesBuy both outcomes. Whichever way the event ends, the pair pays out $1.
Pairs being watched
—
every pair on the watchlist
Ready to trade now
—
rules match exactly and profit is at least 2¢ a pair
Best profit available now
—
at your stake, if every share fills
Your stake
$
the profit figures below use this amount

How the numbers work: every figure uses the same four sums — on the cards, in the compact table and in the trade preview. Profit per pair = the $1 a covered pair pays out, minus the cost to cover both sides, minus the sites' fees (the per-pair profit shown already has the fees taken out). Pairs bought = the smaller of the shares available and what your stake covers. Money in = pairs bought × cost to cover both sides; total profit = pairs bought × profit per pair. Return = total profit ÷ money in. Worked example: both sides cost 97¢ together and the profit after fees is 3¢ a pair. Buy 100 pairs: money in = 100 × 97¢ = $97.00, total profit = 100 × 3¢ = $3.00, return = $3.00 ÷ $97.00 = 3.1%, and you receive $100.00 if both sides fill. This page is a snapshot, republished about every 5 minutes — press Refresh for the newest copy. Your sort and filter choices are kept in the page URL, so Refresh keeps them. Marking a pair "Not the same event" on this page hides it in this browser only (use "Show pairs I marked…" plus Restore to bring it back) — the permanent version happens on the private board, where it also stops the pair being checked or traded. The trade gate is the smallest profit per pair you have set (default 2¢). UI patterns adapted from ahpxex/open-dashboard (MIT).

Accounts & API keys

Status only — which keys are set up, never the keys themselves. Keys live in the project's local .env file — never on this public page, never in chat.

Your loss limits