Hello everyone
I am having troubles figuring out how to in a panel data structure to derive
some descriptives.
In my data
- there are mutliple companies, each having 1 to many funds
- each fund being of one of 11 strategies
- each fund only showing observations for part of the total sample period.
I require
- the total number of companies per month
- the average (median, max) number of funds per company per month
- the average (median, min, max) number of strategies per company per month 
The data format is for example like this:
CompanyID      FundID             Strategy           Date             Return
3021                 205                  2          Jan 94             X
3021                 205                  2          Feb 94             X
3021                 405                  3          Jan 94             X
4671                 904                  9          Feb 94             X
4671                 904                  5          Mar 94             X
4671                 154                  1          Mar 94             X
...
Number of funds per family per month was easy:
by companyid mydate ,sort: egen perfamnrofunds = count(R)
But now I ran into troubles. I would greatly appreciate if anyone could
help.
Thanks in advance,
Best regards,
Oliver 
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