Combos
Source: DKeX (Railbird Exchange) public daily reports · data through Sun, Sep 6, 2026 · each day's reports publish the next day around noon ET; this site refreshes at about 1:30 PM ET
Combo prints only — single-leg contracts are excluded here and combos are excluded everywhere else. Combos were first listed August 26, 2026.
Daily activity: combos vs single-leg contracts
Combo share of prints
Combo share tracks the football calendar: the peaks are Saturdays (CFB), the troughs are MLB-only weekdays. A combo has no complement leg, so no de-duplication applies.
Contracts by legs per combo · Aug 26 – Sep 6
- 12 legs69,570 combos21,275,243
- 23 legs76,776 combos18,976,411
- 34 legs65,792 combos16,740,888
- 45 legs46,737 combos13,364,302
- 56 legs42,179 combos13,980,938
- 67 legs21,832 combos8,123,559
- 78 legs39,854 combos16,345,875
Realised win rate vs implied · settled combos, full archive
- 12 legsimplied 32.6% · 69,570 settled28.9%
- 23 legsimplied 21.3% · 76,776 settled18.6%
- 34 legsimplied 14.8% · 65,792 settled12.4%
- 45 legsimplied 11.0% · 46,737 settled9.2%
- 56 legsimplied 8.3% · 42,179 settled7.0%
- 67 legsimplied 7.4% · 21,832 settled6.6%
- 78 legsimplied 7.9% · 39,854 settled7.0%
Implied = volume-weighted trade price; realised = share of settled combos paying $1, with $0.50 voids and fractional settlements excluded. Realised below implied is the exchange's hold at that leg count.
Legs by market type · from the leg description
- 1Game winner (moneyline)189,244 combos594,890
- 2Margin of victory181,202 combos448,191
- 3Total points84,980 combos176,452
- 4Total runs70,159 combos145,099
- 5Player hits*15,097 combos45,035
- 6Player hits + runs + RBI*10,397 combos32,191
- 7Player home runs*11,924 combos27,021
- 8Pitcher strikeouts13,044 combos26,964
Most-combined underlying markets · resolved legs
- 1Texas -29.5CFB · Spread7,200 combos
- 2Ole Miss -6.5CFB · Spread6,521 combos
- 3AuburnCFB · Moneyline6,495 combos
- 4LA DodgersMLB · Moneyline6,252 combos
- 5Alabama -28.5CFB · Spread5,927 combos
- 6NY YankeesMLB · Moneyline5,065 combos
- 7MIL BrewersMLB · Moneyline5,044 combos
- 8PIT PiratesMLB · Moneyline4,931 combos
* = market-type label inferred from the code, not yet confirmed by settlement evidence.
Players and teams named most across legs
- 1LA Dodgers4.3% No legs46,593 legs
- 2MIL Brewers7.5% No legs38,028 legs
- 3NY Yankees8.5% No legs30,539 legs
- 4ATL Braves10.4% No legs26,383 legs
- 5TB Rays10.4% No legs25,584 legs
- 6LSU17.9% No legs24,683 legs
- 7BOS Red Sox11.7% No legs24,253 legs
- 8CHI Cubs7.8% No legs23,558 legs
Leg resolution · full archive
- 1resolved1,173,570
- 2ambiguous389,708
- 3unresolved56,800
resolved = one single-leg contract matched by name + description; ambiguous = several matched and none was chosen; unresolved = no match. Only resolved legs feed the underlying-market table.
Read before trusting any chart on this page
- A combo is one contract. Its volume is its own; it is not the sum of its legs, and it is excluded from every single-leg figure elsewhere on this site.
- Leg composition is known only after settlement. Open combos are price/volume/OI only.
- Combos do not print their legs into Time & Sales: same-minute coincidence 18.7% vs 17.3% in the next minute (a 1.08x lift).
- Fee revenue for combos is a band on the Revenue page, because the fee schedule is silent on whether a combo is one execution or several.