The top aftermarket NYSE gainers Monday were: Annie's, Fortune Brands Home & Security, 3D Systems, Gafisa SA, Frontline and Armstrong World Industries. The top aftermarket NYSE losers were: Rockwood Holdings, Guidewire Software, Flotek Industries, Vocera Communications and ITT Corp.

Gainers

Annie's, Inc. (BNNY) shares climbed 6.09 percent to $36.76 in aftermarket session.

Fortune Brands Home & Security Inc. (FBHS) shares advanced surged 4.24 percent to $22.63 in aftermarket trading. The stock has a 52-week low of $11.00, a 52-week high of $22.32 and $3.44 billion in market capitalization.

3D Systems Corp. (DDD) shares surged 3.88 percent to $25.19 in post market trading after gaining more than 3 percent in regular session. The company stock will replace Taleo Corp. in the S&P SmallCap 600 index after the close of trading on Thursday, April 5.

Gafisa SA (GFA) shares rose 2.46 percent to $4.58 in aftermarket trading. The company stock plunged more than 5 percent in regular trading session as Gafisa posted a net loss of 1.093 billion reais or $599.13 million in 2011 compared to net profit of 416 million reais in 2010.

Frontline Ltd. (FRO) shares gained 2.04 percent to $7.52 in aftermarket session. The company stock plunged more than 4 percent in regular trading session.

Armstrong World Industries Inc. (AWI) shares rose 1.9 percent to $48.77 in aftermarket trading. The company stock declined nearly 2 percent after its price target was lowered to $58.00 from $65.00 at Barclays Capital.

Losers

Rockwood Holdings, Inc. (ROC) shares plunged 4.48 percent to $50.35 in post market session. The company announced that its global lithium and special metal compounds business will trade under the new brand name Rockwood Lithium.

Guidewire Software, Inc. (GWRE) shares plunged 4 percent to $28.80 in aftermarket session. The company filed for a secondary offering of up to 7.5 million shares just over two months after the software maker went public, Reuters reported.

Flotek Industries, Inc. (FTK) shares declined 3.38 percent to $12.02 in post market session. The company stock gained more than 3 percent in regular trading.

Vocera Communications, Inc. (VCRA) shares fell 3.34 percent to $22.23 in post market trading.

ITT Corp. (ITT) shares declined 2.01 percent to $27.75 in aftermarket session. The company stock was downgraded to neutral rating at JPMorgan Chase & Co.