Trader Brian Jones on Twitter: "Even though the S&P was down 91 yesterday and it's only up 13 today. Just the fact that's while it's higher for the day it has a psychological effect on traders and they are more prone to speculation." / Twitter

Even though the S&P was down 91 yesterday and it's only up 13 today. Just the fact that's while it's higher for the day it has a psychological effect on traders and they are more prone to speculation.