K, how about this. Since you started this combo meal at beginning of the year, has the amount of cash in your account gone up or down?
So for the year, which is ending in a month, what is your realized PnL vs unrealized PnL?
At any time, the PNL can be decomposed into components:
PNL = Realized + Unrealized - commissions
In turn, in the Realized, one could separate the positive "trades" from the "negative" ones (actually the word "trades" is used naively here: we should say more precisely order matches):
Let's write realized = P + N
So we could say:
PNL = P + N + Unrealized - commissions
Now while the PNL is a given number, all these components, may change depending on the lot-matching algorithm which is being used.
take for instance this layer:
which has a PNL of 1629.50. Now the PNL decomposition is quite arbitrary and depends on the lot-matching method.
Just to make an example using 4 different criteria:
FIFO
16269.50 = (17707.50 + -870.00 + 0.00) - 568.00
min realised loss (sell-buy prices of matches have opposite ordering)
16269.50 = (37132.50 + -20295.00 + 0.00) - 568.00
max realized loss (sell-buy prices of matches have the same ordering)
16269.50 = (37142.50 + -20305.00 + 0.00) - 568.00
LIFO
16269.50 = (17707.50 + -870.00 + 0.00) - 568.00
"Realized" and "Unrealized" are concepts used for accounting, but they are arbitrary because they depend on how the order matching is carried out.
All we care really about here is the PNL.
Hope I have answered the question. If not feel free to ask more.

Last edited: