Actinium Pharmaceuticals (NYSE: ATNM) tumbled 16.57% to $7.30 after the company announced a secondary offering of its shares. NeuroMetrix (NASDAQ:

) shares slipped 9.82% to $2.02 after the company announced a $8 million preferred stock placement. Heron Therapeutics (NASDAQ:

) fell 9.55% to $11.55 after the company priced 4.5 million share offering at $11.74 per share. CVR Refining LP (NYSE:

) shares declined 9.40% to $24.59 following the announcement of 6 million common unit offering. Team (NYSE:

) tumbled 4.21% to $37.31 after the company reported downbeat fiscal-fourth-quarter earnings. Team posted its quarterly earnings of $0.60 per share on revenue of $211 million. However, analysts were projecting a profit of $0.71 per share on revenue of $218.5 million. General Mills (NYSE:

) shares dropped 3.35% to $51.90 after the company reported a weaker-than-expected fiscal fourth-quarter profit. Prothena Corporation plc (NASDAQ:

) tumbled 2.64% to $22.50 after the company priced 4.75 million shares at $22.50 per share.