8. Arena Pharmaceuticals, Inc. ( ARNA): Focuses on discovering, developing, and commercializing oral drugs in the therapeutic areas of cardiovascular, central nervous system, inflammatory, and metabolic diseases. Market cap at $1.81B.

Posted a 1.7% loss trading today, but some investors are still bullish, waiting for a weight loss drug to be released. The drug has been anticipated for months. FoolBiotech tweets, "Investors are antsy waiting — when will this obesity drug launch? mot.ly/14lGsFx $ARNA $OREX $VVUS"
 

9. Marathon Petroleum Corporation ( MPC): Engages in refining, transporting, and marketing petroleum products primarily in the United States and internationally. Market cap at $28.17B.

Up 5.6%. Another big mover in the refinery sect. Prostocktrader tweets, "$PSX (65.18) Update: Nice rally since my comment earlier in the day when it was trading sub 64. New 52 weeks highs coming as $MPC."
 

10. DepoMed Inc. ( DEPO): Develops and commercializes pharmaceutical products based on its proprietary oral drug delivery technologies in the United States. Market cap at $368.75M.

DEPO was beat up today, down 9.8% coming from a rumor that the FDA will reject a menopause drug. Technicaltrader tweets, "FDA advisers vote to reject approval of $DEPO menopause drug http://stks.co/p4Nk"
 

( Written by Kapitall's Ryan Horch)

 

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