How to make money on SPY options every time

This comment was posted to reddit on Apr 22, 2020 at 8:46 pm and was deleted within 14 hour(s) and 24 minutes.

First, nice work on getting a hypothesis out ! Second, my comments:

These two sentences don't follow logically: " Historical data from the past 10 years shows that the opening price of SPY has only been the high/low 22 times, because of this we can assume with 99.8% confidence that if spy moves one direction at open that it will (99.8% of the time) cross back over the opening price at least once." Just because the Opening price hasn't been the High/Low, it doesn't follow that we must cross back over the Opening price. The cross over is only valid provided the first criterion holds true (Open hasn't been High/Low) AND the Closing price is on the opposite side of the Open (with reference to the direction of movement). As an example, if SPY Opens at value X and goes to X+2 and Closes near X+2, you have no cross over. Perhaps your analysis is correct and its just the wording? I haven't fully checked the data yet.
Your "SPY Trading Data" tab has the price movement at $0.55, while the rest of the spreadsheet has the lower bound at $0.5 - might want to get that consistent