Arbitrage

What it does

Arbitrage lists every market where the best price on each outcome, taken at different venues, adds up to less than 100% implied, so the right stakes return the same amount whatever happens. It runs in your browser on the books you pick with the Book: selector, and exchange and prediction-market legs are priced at your net price after the venue's published fee.

Profit = 1 ÷ Σ(1 ÷ net price) − 1. Example: +110 at one book and −102 at another sum to 98.1% implied. Staking $48.53 and $51.47 returns $101.92 either way, a 1.92% profit on $100.

Each row shows ARB %, EVENT, MARKET, BOOKS (one line per leg: the selection, its net price, the book, and Liq $ where we hold the exchange's order book), BET SIZE (an editable stake per leg, split from your Target bet) and PROFIT with its ROI. Arbs between different alternate points carry a + middle tag when both legs can also win. An arb with a leg older than twice its refresh interval is hidden and counted as stale hidden: an arb on an old price is usually gone at the book.

Who it's for

• Bettors who want low-variance returns and accept the account-limit risk that comes with arbing.
• Exchange and prediction-market users hedging against sportsbook prices.
• Anyone working off a balance or a promo who wants a position that pays either way.

Coverage

The collector is built for four groups of books. Which of them quote a given game depends on what each book posts, so a column can be empty.

Pick'em apps are never part of an arb, and exchange quotes flagged as thin are left out. Offshore books can appear as a leg for price comparison, but they are odds only and never linked.

Sports the collector is built for: NFL, college football, CFL, NBA, WNBA, college basketball, NHL, MLB, KBO, NPB and soccer (Premier League, MLS, La Liga, Bundesliga, Serie A, Ligue 1, Champions League). What you see on a given day depends on what is in season and what the books have posted.

Pregame only. There are no live odds anywhere on the site, and a game drops off every tool at its start time. Refresh speeds up near the start: game lines every minute inside 2 hours, every 5 minutes from 2 to 12 hours, every 15 minutes from 12 to 36 hours and every 3 hours beyond; props every 5, 15 and 60 minutes in the first three windows. A credit budget guard slows the far windows first if credits run low. The ● Live · 12s badge in the top bar shows the true age of the newest collector run and turns amber (Delayed) when it is older than it should be.

What to check before you bet

• Both legs, at the book, before staking either. Arbs close in minutes.
• That the legs settle the same way (same line, same overtime and void rules). A same venue badge means both legs sit in one exchange family and usually can't be placed together.
• Depth. Where we hold the order book, Liq $ shows what is available at that price; a leg with $0 is sized at 0 and the row reads not fillable.
• Fees. Exchange legs are already at their net price (marked net).
• Account limits. Books limit accounts that arb regularly.

How to use it

1. Open Arbitrage, pick your books with the Book: selector, and narrow by league, market (Game lines, Player props, Alt lines) or a minimum profit.
2. Set your Target bet (saved on this device). Every row splits it across the legs, rounded to $1 by default; change rounds to the cent, $1 or $5.
3. Expand a row for OUTCOMES (what each result returns) and STAKES, or click it for the stake calculator: total stake, rounding, Copy stakes, each leg's price age and the math.
4. Confirm both prices at the books, then place the leg most likely to move first.