The probability goes from 16-18% all the way down to 1%-2% after 19 minutes of time decay and a $1.13 drop on a $500+ stock? That's why I'm very skeptical about the usefulness of the option greeks.
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The change in probability was due to the move from $545.99 (when you bought the option) to the close of $537.02. Time decay/Theta does not exist. It is a derivative of price that expresses the decline in probabilities/optionality over time.
