GUIDES · BETSLIP DOCTOR
How is ROI calculated on a BSD Tail record?
In a BSD Tail record summary, ROI is net units divided by risk units for the selected period, then displayed as a percentage. The denominator is units at risk, not the number of settled picks. A settled-pick count is shown separately from risk and units.
For BSD readers checking the ROI field on a Tail record summary · Updated
Divide net units by risk units
The Tail record stores a period's net units, risk units and ROI separately. The source validates ROI as units divided by risk; the display helper formats a non-null ratio as a percentage.
Use the values for the same selected period. The Tail summary can switch between the last 30 days and all recorded results, so do not divide a 30-day net result by an all-time risk total.
- Formula: net units ÷ risk units = ROI ratio.
- The interface displays the ratio as a percentage.
- Use the matching period's net units and risk units.
Settled-pick count is not the denominator
The record summary displays wins, losses, pushes and settled-pick count separately from net units, ROI and units staked. A pick count tells you how many outcomes were recorded; risk units describe the amount used in the ROI calculation. Counting picks cannot replace the risk total.
This ROI describes the recorded unit figures for that period. It does not include additional expenses unless they are separately represented, and it says nothing about a future result. It is not financial advice.
Illustrative arithmetic: use risk, not pick count
In fictional arithmetic, a Tail summary shows +2u net units and 10u at risk across three settled picks. The ROI calculation is 2 ÷ 10 = 0.20, displayed as 20%. Dividing by the three picks would use the wrong denominator. These figures are an invented calculation example, not an actual capper record or performance claim.
Related questions
Why not divide net units by settled picks?
Settled-pick count is a separate count of outcomes. The Tail ROI formula divides net units by risk units, so count is not the denominator.
Does a displayed ROI predict future results?
No. It describes the recorded net and risk units for the selected period and makes no promise about future results.