The top after-market NYSE losers on Tuesday are: North American Energy Partners, United Rentals, Global Cash Access, Statoil ASA, Liz Claiborne, ProLogis, Boston Scientific, Mechel Steel Group and Cash Store Financial Services.

North American Energy Partners, Inc. (NYSE:NOA) shares plunged 4.88 percent to $11.50 in post market trading session. Its third quarter profit plunged as rental costs for unused equipment pressured margins and the company forecast markets to remain challenging for the year.

United Rentals, Inc. (NYSE:URI) shares declined 3.74 percent to $26.50 in post market trading session. The company reported fourth quarter net income of $0.16 per share against analysts, estimation of $0.18 per share.

Global Cash Access Holdings, Inc. (NYSE:GCA) shares declined 2.72 percent to $3.57 in aftermarket trading session as its fiscal 2011 earnings guidance fell short of analysts’ expectations.

Statoil ASA (NYSE:STO) shares declined 2.46 percent to $25.58 in aftermarket trading session.

Liz Claiborne, Inc. (NYSE:LIZ) shares declined 2.33 percent to $5.02 in post market trading session. The stock has a 52 week low of $3.90 and 52 week high of $9.72 and has 94.47M outstanding shares.

ProLogis (NYSE:PLD) shares declined 2.22 percent to $14.51 in aftermarket trading session. -Robbins Umeda LLP is investigating possible breaches of fiduciary duty and other violations of state law by members of the board of directors of ProLogis (NYSE: PLD) in connection with their efforts to combine with AMB Property Corporation (NYSE: AMB).

Boston Scientific Corp. (NYSE:BSX) shares declined 1.26 percent to $7.04 in aftermarket trading session.

Mechel Steel Group OAO (NYSE:MTL) shares declined 1.13 percent to $34.20 in post market trading session.

Cash Store Financial Services Inc. (NYSE:CSFS) shares declined 1.08 percent to $12.96 in after market trading session. The stock has a 52 week low of $12.90 and 52 week high of $17.41 and has $223.1 million market capitalization.

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