We talk a lot about how option selling is like running an insurance company . Most days, you collect your premium, the 0DTE SPX contracts expire worthless, and you go home happy. But if you’re in the insurance business, you have to expect that eventually, someone is going to file a massive claim.

Today was one of those claim days. A completely one-sided, relentless market trend triggered a heavy payout scenario for our 2:00 PM Iron Fly bot.

Let’s look at the logs to see how the house lost this round.

⚙️ The Setup

Our bot runs mechanically: enter at 2:00 PM, monitor the price, and exit at 3:59 PM with no stop-loss or profit targets. For a deeper look at why this bot deliberately skips the stop, see 0DTE SPX: Same Strategy, 30 Minutes Apart, Completely Different Story .

At exactly 2:00 PM, the SPX was trading at 7371.45. The bot sold the 7370 straddle and bought the wings $40 out to cap the risk.

  • Underlying: SPX @ 7371.45
  • Short Strikes: 7370 Call / 7370 Put
  • Long Wings: 7410 Call / 7330 Put
  • Entry Credit: $13.70

📉 The Grind

When you sell a delta-neutral Iron Fly, you want the market to chop around and burn time. Instead, the SPX caught a bid and never looked back.

Looking at the bot’s monitoring logs, the trade went negative within minutes and the drawdown just kept accelerating as the SPX marched right toward our 7410 long call wing.

Here is a snapshot of the heat:

  • 2:06 PM: SPX @ 7371.11 | P/L: -$32.50
  • 2:26 PM: SPX @ 7381.17 | P/L: -$210.00
  • 3:12 PM: SPX @ 7388.35 | P/L: -$562.50
  • 3:35 PM: SPX @ 7400.02 | P/L: -$1,620.00

Because this specific bot is programmed to monitor the position and take the hit rather than stop out early, it just sat there and logged the damage.

🛑 The Payout

At 3:59 PM, the bot executed its time-limit exit to close the position.

  • Exit SPX Price: 7403.17
  • Exit Debit: $34.20
  • Total P/L: -$2,050

🧠 The Cost of Doing Business

Taking a $2,050 loss stings, but it’s part of the casino math . We sell premium knowing that outsized directional moves will occasionally blow past our short strikes. Without a stop-loss, we eat the full intrinsic value of the move.

But that’s the business model. We pay out the claim today, reset the board, and go back to collecting premiums tomorrow. The edge is in the mechanics, not in winning every single trade.

Disclaimer: This log is for educational purposes only. 0DTE options carry significant risk. Always trade within your risk tolerance.