A trader is looking for MasterCard to hold firm through its earnings report at the end of this month.
optionMONSTER systems detected the sale of 4,679 Weekly 70.50 puts that expire on Oct. 31 for $0.64. Open interest was just 243 contracts before the trade appeared, so this is clearly a new position.
The put seller is looking for MA to stay above $70.50 for the next three weeks. The trader takes on the risk of having to buy shares if they fall below that strike price.
— Option Monster