Short Options positions refers to selling either puts or calls. Going short by selling (or writing) a call means the Option Writer is Bearish (pessimistic) about the Underlying stock or commodity. Going short by selling a Put Option means the Option Writer is Bullish (optimistic) about the prospects for the asset. It is possible to go short of an option and be Bearish or Bullish. Short Options have theoretically unlimited risk (down to zero in the case of puts) because the option seller must fulfil their obligations to the Option Buyer if they choose to Exercise their rights. Contrast with going Long.