orphan drug status, page-9

Bewarned the liquidity in options can be a problem (not enough trading) and sometimes difficult to sell if the price on the heads takes a tumble. Options are usually bought to get more bang for your buck via increased leverage to upside and down. Because there is only a two cent exercise there is only a small difference in price between PRR and PRRO and one might argue that why bother with the options for the sake of a couple cents. It makes cents (sense) to buy the options only if they are trading at a discount to the fully paids and then convert them. For trading I would stick with the stock unless you are exploiting the opportunity for volatility and experienced in this type of trading.