When a 0DTE SPX Iron Fly faces a relentless, one-sided market without a stop-loss, it becomes a textbook insurance claim payout. Here is the minute-by-minute breakdown of a $2,050 lesson in casino math.
Three wins, two losses, net -$23. That is a 60% win rate, and it produced a losing week. On the same SPX, in the same five sessions, the 2 PM Iron Fly bot made +$1,614. Different entry time, different bot, very different number on the spreadsheet. This piece is about what 10:30 AM costs you. The Setup The bot is a 0DTE iron condor on SPX. Every trading day at 10:30 AM ET, it sells a 20-delta call and a 20-delta put on same-day options, then buys $100-wide wings on each side for protection. After that it does one of three things: it hits its 35% profit target (close when the position has captured 35% of the credit collected), it hits its 50% stop loss (close when the position has lost 50% of the credit), or it force-exits at 1:00 PM ET if neither has fired. No adjustments. No rolling. No human override. ...
Three trading days. Same bot, same rules, same 9:32 AM entry window. By Thursday afternoon the scoreboard read: +$322, +$326, -$618. Net profit for the week: $30. That number deserves to be looked at honestly. Two wins that felt routine. One loss that felt brutal. And at the end of it, a $30 profit that doesn’t even cover lunch. This is what consistent mechanical trading actually looks like — not a highlight reel, not a horror story, just the math running its course across three very different mornings. ...