Treasury stock is stock that has been issued but is being held by the company (such as shares obtained in a company repurchase). In effect, as far as the float is concerned treasury stock is like unissued shares, but as a corporate asset treasury stock has a cost on the books and is a corporate asset with a current value. If you want more than that (or, which is likely, a correction to that) a better accountant than I will have to answer.
Technically all stocks issued can be traded, but shares held by corporate officers are restricted so they cannot be traded freely on the open market. For instance, an officer cannot both buy and sell within a six-month period (there are probably exceptions to this, but I don't know what they are).
Treasury stock is not hypothecated (held in a street account by a broker) and can't be loaned for shorting. I suppose, but don't know, that closely held stock is the same.
The float can be hypothecated, and here the plot thickens. Apparently the float can in theory by loaned repeatedly in at least diminishing fractions for shorting. In effect, outstanding short interest expands the float. There's no obvious theoretical limit to this that I've been able to determine, though I've read that there is a rule (in a land of few rules apparently) which forbids loaning more than 50% of a clearing firm's available stock for shorting. If this were true, you couldn't theoretically more than double the float by shorting, but I don't see any way to enforce it because a clearing house could take in shares which were in fact bought from a short seller, which would increase its available shares for shorting.
All very mysterious. If you want to know more, don't ask me! If you find out more, please tell me!
Regards,
Spots |