Buying a put option is generally treated as a short sale, and the exercise, sale, or expiration of the put is a closing of the short sale. See Short Sales, earlier. If you have held the underlying stock for 1 year or less at the time you buy the put, any gain on the exercise, sale, or expiration of the put is a short-term capital gain. The same is true if you buy the underlying stock after you buy the put but before its exercise, sale, or expiration. Your holding period for the underlying stock begins on the earliest of:
◎The date you dispose of the stock,
◎The date you exercise the put,
◎The date you sell the put, or
◎The date the put expires.