- Bull Call Ladder (also Long Call Ladder)
- Call Ratio Spread (also Ratio Call Spread, Bull Ratio Spread)
- Covered Put
- Short Call (also Naked Call, Uncovered Call)
- Short Combo
- Short Guts
- Short Straddle
- Short Strangle
- Synthetic Short Stock
- Synthetic Short Straddle
An option strategy has unlimited loss if it is net short call options or underlying. The theoretically unlimited loss occurs on the upside (when underlying price gets infinitely high).
This list assumes underlying price can't be negative, which is the case with most underlying assets. Therefore, strategies whose maximum loss occurs at zero underlying price (net short puts, net long underlying) are not included. Their maximum loss may be very high, but it is still limited.