LARGE $MGM put position put on 9/16/17…164% of normal volume

MGM Resorts International (NYSE:MGM) was the target of unusually large options trading activity on Tuesday. Investors purchased 11,909 put options on the company. This is an increase of approximately 164% compared to the typical daily volume of 4,509 put options.

https://www.truebluetribune.com/2017/09/16/mgm-resorts-international-target-of-unusually-high-options-trading-mgm.html

(These are bets that a stock will go down, not up)