Short call synthetic straddle is a non-directional synthetic strategy with two legs. It replicates short straddle with long underlying position and short call options. Like short straddle, it has unlimited risk and limited profit.
Short call synthetic straddle is the inverse position to long call synthetic straddle.
Short straddle = short call + short put
Short call synthetic straddle = short call + synthetic short put
Synthetic short put = long underlying + short call
Short call synthetic straddle = long underlying + 2x short call
The setup is:
- Long underlying position.
- Short call option with double size relative to the underlying.
For example, we can replicate a 65-strike short straddle (65-strike short call and 65-strike short put) by replacing its short put component with long stock and another 65-strike short call:
- Buy 100 shares of underlying stock.
- Sell 2 contracts of 65-strike call options.
If we are long 100 shares of the underlying stock and one option contract represents 100 shares (as for US traded stock options), we need to sell two call option contracts (which represent 200 shares). The option position size is double relative to the underlying size, as there is one short call from the original (non-synthetic) short straddle and another short call from the synthetic short put.