Today the SPX Sep 30th spread I put on last week expired worthless. Using the calculator I opened the SPX 1895-1915 / 2030-2050 Iron Condor last week (Monday, Sep 22nd). I received $0.80 credit and sold 300 contracts.

300 *100 * $0.80 = $24,000 gain (minus commissions) for 1 week. This used $576,000 of buying power so the 1-week return was $24k / $576k = 4.1%

I am now at a 134.5% YTD return with this strategy and have had 46 total trades. 4 losers / 42 winners.