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A chunk of options settled at 1.0900 strike
For what it is worth, the EURUSD settled at 10 AM ET (the option settle time) at 1.0900. There were $2.3B of options settling at that time. Sellers of puts and call at that strike had the price settle near $0.
So sellers of the option booked the entire premium they received for selling the option. The buyers meanwhile, lost the entire premium they paid for the option.
Sellers win.
ForexLive