https://www.cnbc.com/2017/09/10/stocks-this-week-three-things-to-watch-as-irma-rips-through-florida.html >September so far is living up to its reputation as the market's cruelest month. Major indexes are uniformly negative so far, with the once-untouchable tech shares leading the way lower. >Things don't get any easier, even though it looked like Monday was going to get off to a strong start. As Hurricane Irma tears its way through Florida, investors this week will need to keep alert for other storms out there as well. Three things to watch: