The best way that an investor can bet against a penny stock is by short selling it. This means that the investor sells a put option on the stock, one that gives him the price to sell the stock at a given price on a certain date. When the option matures, if the price of the stock has fallen, then the investor nets a profit.

You still haven't shown me how this can be done with PTSC.

I'm waiting for your instructions.

Waitng!!!!!!!