Caterpillar (CAT) had a big drop in August from over $110 to $99. While the stock has rebounded nicely recently, it is down today and still looks very weak as the shares struggle to find support. I expect CAT to head back to its lows of early August, and I want us to play the potential downside. Buy to open CAT October $105 puts (exp. 10/10) at $3.70 or under. This is an aggressive trade.