Rummaging "shorts" on internet produced what I'll call a k factor. Market Makers receive sell orders from broker's straight long clients. They go out and sell the stock. Not owning the stock they record it as a short sale. Getting the stock from the broker I surmise it's a cover sale. It seems as low-short positioned a stock as XOM can show short activity of 10% at the low end and up to 20% + at the high. Is k a fairly steady factor when related to total volume or another factor or what - we'll see I hope.
I had found the same information several weeks ago when you were reporting daily short sale figures. I did a little research on the internet and saw what you are saying.....that ordinary sales are being recorded as short sales. I've also wondered about actual short sales that were simply daytrades. All of that has made me question the usefulness of trying to look at that data. We need to know the daily net change in open short positions at the close and we don't have that.