S&P 500 companies have been reporting strong numbers this earnings season, but which stocks have reacted the most positively? Below is a list of the 43 S&P 500 stocks that have gained more than 5% on the first trading day in reaction to their Q2 earnings reports. As shown, Priceline.com (PCLN) took the #1 spot this week when it gained 21.95% on Wednesday (the company reported after the close on Tuesday). Citrix Systems (CTXS) isn't too far behind with a one-day gain of 19.73% in response to its recent report. Harley Davidson (HOG), Ameriprise Financial (AMP), Janus Capital (JNS), and Fifth Third (FITB) are the only other S&P 500 stocks that have gained more than 10% on their report days this earnings season. Some other notable names on the list of earnings season winners include QUALCOMM (QCOM), Polo Ralph Lauren (RL), Electronic Arts (ERTS), Morgan Stanley (MS), and Ford Motor (F).
click to enlarge
Now on to the losers. Below is a list of the S&P 500 companies that have declined more than 10% on their report days this season. While just 6 S&P 500 stocks have gained more than 10% on their report days, 15 have declined more than 10%. Four companies have had one-day declines of more than 15% -- QLogic (QLGC), Pitney Bowes (PBI), Eastman Kodak (EK), and MEMC Electronics (WFR).


