Potential profit on the ladder

[PioPio]

Hello,

I have a question about the profit/loss calculation on the side of each ladder.

The example below shows a potential profit of £ 0.49 after I placed a back trade of £ 4.8 at 3.8 and if a lay trade at 3.45 is matched.
I thought the formula to find this would be (back trade size/back trade price*lay trade price)-back trade size --> (4.8/3.8*3.45)-4.8=£ 0.44 but BA shows £ 0.49 instead.

BA.png

Where am I doing wrong ?


Many thanks
Alberto

[jtrader]

Hello,

I have a question about the profit/loss calculation on the side of each ladder.

The example below shows a potential profit of £ 0.49 after I placed a back trade of £ 4.8 at 3.8 and if a lay trade at 3.45 is matched.
I thought the formula to find this would be (back trade size/back trade price*lay trade price)-back trade size --> (4.8/3.8*3.45)-4.8=£ 0.44 but BA shows £ 0.49 instead.

BA.png

Where am I doing wrong ?


Many thanks
Alberto

Formula should be -> ( odds * stake / new odds - stake ) * ( ( 100 - com ) / 100 ) = 4.8 * 3.8 / 3.45 - 4.8 = 0.49 ( without com )

P.S. And by the way you couldn't calculate £ 0.44 by your formula too , it's = - 4.43 if you follow the order of mathematical operations.