Further to my daily option expiry post it’s now reported that USDCHF has a USD 1 bln value today for the 0.9040-50 level
Currently 0.9051 having fallen from 0.9073 to 0.9037 after the decent PMI data earlier.
As ever take the option info for what you think its worth and remember that it takes two to make a contract so both sides will have an interest closer to the time if it’s still around here.
More info on expiry trading here