We know what the data represents (all positions no

We know what the data represents (all positions not closed for the day) and we know what we want to get out of the data (naked short positions). So we have A+B+C+D+etc...= daily short volume

Let's assume B = naked shorts

I'm no mathematician but I know you can't determine any value for B if you don't know the values of A, C, D, etc....