Shares of Pfizer Inc. PFE fell 0.3% after posting third quarter 2017 revenues of $13,168 million, below the Zacks Consensus Estimate of $13,169 millionShares of Under Armour, Inc. UA plummeted almost 22% after posting third quarter 2017 earnings of $0.22 a share, lower than $0.29 a share in the year ago quarterShares of Aetna Inc. AET dipped 0.7% after posting third quarter 2017 revenues of $14,948 million, below the Zacks Consensus Estimate of $15,108 millionShares of Acorda Therapeutics, Inc. ACOR declined 2.7% after posting third quarter 2017 revenues of $141 million, below the Zacks Consensus Estimate of $151 millionWant the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Pfizer, Inc. (PFE): Free Stock Analysis Report Acorda Therapeutics, Inc. (ACOR): Free Stock Analysis Report Aetna Inc. (AET): Free Stock Analysis Report To read this article on Zacks.com click here. Zacks Investment Research