The top aftermarket NYSE losers on Tuesday were: Sequans Communications, IDT Corp., HyperDynamics, Getty Realty, U.S. Gold Corp., Penn Virginia Corp., Ivanhoe Mines, Manitowoc Co., Titan International and Calix.

Sequans Communications S.A. (NYSE:SQNS) shares slumped 29.58 percent to $2.50 in post-market trading sessions after lowering its fourth quarter revenue guidance. The company currently expects fourth quarter revenue to be approximately $11 million, compared to its earlier estimation of $20 million to $23 million.

IDT Corp. (NYSE:IDT) shares plunged 10.61 percent to $10.70 in post market trading session. The stock has a 52-week low of $10.65, a 52-week high of $30.46 and $243.09 million in market capitalization.

HyperDynamics Corp. (NYSE:HDY) shares plunged 9.86 percent to $2.65 in aftermarket trading sessions.

Getty Realty Corp. (NYSE:GTY) shares plunged 9.08 percent to $11.61 in post-market trading sessions on ex-dividend date Dec. 13. On Nov. 22, the company announced a quarterly dividend of $0.25 per common share payable on Dec. 29, 2011, to shareholders of record on Dec. 15, 2011.

U.S. Gold Corp. (NYSE:UXG) shares declined 8.19 percent to $3.14 in aftermarket trading sessions. U.S. Gold futures declined nearly 2 percent on Tuesday as the dollar rallied after the U.S. Federal Reserve meeting offered no new stimulus.

Penn Virginia Corp. (NYSE:PVA) shares declined 7.39 percent to $5.14 in post-market trading sessions. The company stock was downgraded to a “neutral” rating from a “buy” rating at CapitalOne.

Ivanhoe Mines Ltd. (NYSE:IVN) shares declined 6.9 percent to $16.19 in aftermarket trading sessions. The stock has a 52-week low of $12.11, a 52-week high of $29.29 and $11.83 billion in market capitalization.

Manitowoc Co, Inc. (NYSE:MTW) shares declined 6.56 percent to $9.38 in aftermarket trading sessions.

Titan International, Inc. (NYSE:TWI) shares declined 6.54 percent to $20 in aftermarket trading sessions. The Board of Directors of TWI has approved a quarterly cash dividend of $.005 per common share for the fourth quarter of 2011 payable on January 16, 2012 to stockholders of record on December 31, 2011.

Calix, Inc. (NYSE:CALX) shares declined 6.47 percent to $6.52 in aftermarket trading sessions.

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