Hi I was looking at short availibility on some microcap stocks today on IB, and saw some with a couple/few hundred thousand USD availibility but only 1 or 2 lenders . Considering the stocks have very low volume, it can easily become disastrous if someone borrow all those shares, build a position over a few days, than the shares get recalled and they must buy the shares back quickly in the market. It's also very easy for the lender to understand what's going on, so the temptation must be great from his side to recall them.. How do guys go on making money shorting those stocks ? Do they mostly day trade, which is not possible with any size ? I undersand Tim Sykes claims to have made more than a few bucks shorting penny stocks, and a bunch of followers piggy back him . How can they short those penny stocks with size, especially over longer periods ? Thanks in advance for all related feedback.