Exchange

BetOpenly was a leg in 11,637 arbs, 6.7% of every arb we logged in four weeks

BetOpenly is a peer-to-peer betting exchange: you take a price another user posted, not one a house set.

We could not read a published fee for it, so check your own ticket before you count a price as a leg.

By Dynatyze Research · Updated Oct 29, 2026 · Run by BetOpenly

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The numbers

Arbs with this book: 11,6376.7% of 174,085 arbs · Sep 30, 2026 to Oct 27, 2026
Median arb life: 29 min 54 smedian locked return 0.58%

Arbs with BetOpenly

Arbs11,637 with BetOpenly as one leg, 6.7% of all 174,085

Median return0.58% locked, before limits and voids

Median life29 min 54 s from the first scan that saw it to the last

Most commoncollege football moneyline (1,707), NFL spread (1,468), NFL moneyline (1,421)

Middles8,153 of 308,430

Low holds6,848 of 33,394

SportsMLB, NBA, NFL, college football

WindowArbs first seen Sep 30, 2026 to Oct 27, 2026, since ended

Where it shows up on Dynatyze

Other books, measured the same way

Common questions2 questions

How many arbs include BetOpenly?

11,637 of the 174,085 arbs our scanner logged from Sep 30, 2026 to Oct 27, 2026 had BetOpenly as one leg. For the median one, the last scan that saw it came 29 min 54 s after the first, so speed and limits decide whether you get one.

Can I bet through Dynatyze?

No. Dynatyze is research, not a sportsbook. We read prices and link you to the book; you place the bet there.

How this is read

Best price is a contest among US-licensed sportsbooks only. A side counts when at least 3 of them priced it at the same line; ties count for every tied book. Reference books, exchanges, offshore books and pick'em apps never compete for best.

Margin is the two implied probabilities of a two-way market added together, minus 100%, averaged over every market the book priced on both sides at one line.

A market is listed once a book has 200 contested prop sides or 100 two-way prop markets in it (100 and 50 for game lines).

Arbs, middles and low holds are every one our scanner first saw from Sep 30, 2026 to Oct 27, 2026 that has since ended, under the desk's 8% ceiling, a book counted once per event it was a leg of. Four weeks, because the arb ledger keeps every sport whole for about 30 days. Life is the time from the first scan that saw an arb to the last, and scans run about a minute apart.

BetOpenly was a leg in 11,637 arbs, 6.7% of every arb we logged in four weeks

BetOpenly is a peer-to-peer betting exchange: you take a price another user posted, not one a house set.

We could not read a published fee for it, so check your own ticket before you count a price as a leg.

By Dynatyze Research · Updated Oct 29, 2026 · Run by BetOpenly

Common questions2 questions

How many arbs include BetOpenly?

Can I bet through Dynatyze?

No. Dynatyze is research, not a sportsbook. We read prices and link you to the book; you place the bet there.

How this is read

Margin is the two implied probabilities of a two-way market added together, minus 100%, averaged over every market the book priced on both sides at one line.

A market is listed once a book has 200 contested prop sides or 100 two-way prop markets in it (100 and 50 for game lines).

BetOpenly was a leg in 11,637 arbs, 6.7% of every arb we logged in four weeks

The numbers

Arbs with BetOpenly

Where it shows up on Dynatyze

Other books, measured the same way

Sources

Common questions2 questions

How many arbs include BetOpenly?

Can I bet through Dynatyze?

How this is read

Responsible gaming

BetOpenly was a leg in 11,637 arbs, 6.7% of every arb we logged in four weeks

The numbers

Arbs with BetOpenly

Where it shows up on Dynatyze

Other books, measured the same way

Sources

Common questions2 questions

How many arbs include BetOpenly?

Can I bet through Dynatyze?

How this is read

Responsible gaming