Okay, after quite some research (interesting question by the way!), I came up with this:
=IF(COUNTIF($A$2:A2,A2)>1,"",SUMIF(A:A,A2,B:B))
=IF(COUNTIF($A$2:A2,A2)>1,"",SUMPRODUCT(--(A:A=A2),B:B,D:D)/SUMIF(A:A,A2,B:B))
Put these in cell D2 and E2 respectively (which is the next column after Price
and in the row of CUSIP AF0
).
And fill to the bottom of the worksheet to get the weighted average price or each CUSIP.
The first formula gives you the total quantity for the CUSIP and the second gives you the average price.
Copy and paste values for those two columns after calculation.
Put a filter and remove all the rows where the total quantity and average price is blank, and sort to make the worksheet neat.
Let me know if this works for you! I tried it on your sample data and it seems to be working. It's my first time using SUMPRODUCT
^^;
SUMPRODUCT(--(A:A=A2)
This bit returns the rows from column A where it equals to the row's CUSIP.
SUMPRODUCT(--(A:A=A2),B:B,D:D
This additional bit tells excel to multiply the values in column B and D of each returned row found above and SUMPRODUCT
adds each result together.
EDIT:
I actually forgot about the date. You could maybe add a helper column where you'll generate an identifier to separate the different dates. To make it, you'll have to make a concatenate
.
Hence in cell F2, you put:
=CONCATENATE(A2,C2)
In the formulae for cells D2 and E2, you will have to change them so they become:
=IF(COUNTIF($F$2:F2,F2)>1,"",SUMIF(A:A,A2,B:B))
=IF(COUNTIF($F$2:F2,F2)>1,"",SUMPRODUCT(--(A:A=A2),B:B,D:D)/SUMIF(A:A,A2,B:B))
reEDIT: Oops, put the wrong reference. Fixed now.