The top after-market NASDAQ stock market losers are: Xilinx, Altera, NetLogic Microsystems, TFS Financial, Park-Ohio Holdings, Oritani Financial, Vertex Pharmaceuticals, Finish Line, Wet Seal, and Ebix.

Xilinx Inc. (XLNX) lost 3.56 percent to $27.38 in the after-hours trading. The company lowered its sales guidance for the third quarter to down about 7 percent to 9 percent sequentially from previous forecast of flat to down 4 percent sequentially, due to weaker than anticipated sales to a few large communications customers specifically in its wireless segment.

Xilinx expects sales growth to return to the communications segment in the March quarter based on current backlog and forecast from its large customers. The company is slated to report its third-quarter results on January 19.

Altera Corp. (ALTR) plunged 3.52 percent to $34.55 in the after-market session.

NetLogic Microsystems Inc. (NETL) plummeted 3.31 percent to $31 in the after-hours trading.

TFS Financial Corp (TFSL) fell 2.94 percent to $8.25 in the after-market session.

Park-Ohio Holdings Corp. (PKOH) dropped 2.39 percent to $20.67 in the after-hours trading.

Oritani Financial Corp. (ORIT) tumbled 2.36 percent to $12.02 in the after-market session.

Vertex Pharmaceuticals Inc. (VRTX) slid 2.26 percent to $35.50 in the after-hours trading. The company said it has modified a midstage trial assessing regimens of its lead investigational drug telaprevir for treatment of Hepatitis C virus in combination with VX-222. The study is the second of three phases of clinical tests typically required for U.S. approval.

The company said it has discontinued the second two-drug treatment of telaprevir and VX-222 alone, upon meeting a pre-defined rule related to viral breakthrough. But studies would continue with three arms, by including ribavarin to the two-drug combination.

Finish Line Inc. (FINL) declined 1.81 percent to $18.45 in the after-market session. The company's third quarter profit was $4.1 million or 8 cents a share, down from $6.6 million or 12 cents a share last year. Sales rose 8.7 percent to $260.9 million. Analysts had expected profit of 5 cents a share on revenue of $249.09 million. Comparable store sales increased 10.1 percent.

Looking ahead, Finish Line expects to achieve double digit operating margins by driving the top line in its stores and by accelerating growth in e-commerce that will play a vital role in the future.

Wet Seal Inc. (WTSLA) decreased 1.60 percent to $3.70 in the after-hours trading.

Ebix Inc. (EBIX) moved down 1.49 percent to $23.19 in the after-market session.

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