Tetralogic, Freeport-McMoRan, Melco Crown Lead Tuesday's After-Hours Movers

Tetralogic Pharmaceuticals Corp

rose 23 percent to $2.88 in late trading Tuesday. The company issued preliminary data after the bell from a Phase 2A study of its treatment for a group of cancers called myelodysplastic syndromes. AeroVironment, Inc.

rose about 5.6 percent to $27.50 following the bell Tuesday. The provider of unmanned aircraft systems posted quarterly results. Towers Watson & Co

bounced up more than 5 percent after hours Tuesday to $132.49. The company closed earlier down 8.8 percent after announcing a merger that values Towers Watson at the equivalent of $125 a share. Freeport-McMoRan Inc

rose more than 3 percent to $19.23 in the extended session. The company closed down nearly 4 percent earlier Tuesday. Kate Spade & Co

traded up 2.5 percent after hours to $22.08. The retail apparel company closed down earlier and shares were off nearly 14 percent in the past five trading days. Outfront Media Inc

bounced up about 2 percent to $25.79 in late trading. The billboard company fell about 2 percent before the bell. Xerox Corp

gained nearly 2 percent to $10.84 in the extended session. The Norwalk, Connecticut-based company completed the previously announced sale of its IT outsourcing business. Melco Crown Entertainment Ltd

fell nearly 3 percent after the bell to $19.07. The company closed up earlier by about 9 percent. Casino stocks rose Tuesday on news that China will ease rules on local tourists visiting Macau. Assured Guaranty Ltd.

declined nearly 8 percent to $22.10 in late trading Tuesday. The company, which provides credit protection to public finance markets, has been pressured by the Puerto Rican debt crisis. Inovalon Holdings Inc

gave back nearly 2 percent, trading at $27.37 after the bell. The data analytics company closed up earlier by about 2.6 percent and didn't issue news Tuesday.