The top aftermarket NYSE losers Wednesday were: Country Style Cooking, Laredo Petroleum Holdings, United Parcel Service, Mueller Water Products, Pacific Drilling, Arch Coal, Office Depot, Ion Geophysical, Enersys and PulteGroup, Inc.

Country Style Cooking (NYSE: CCSC) shares slumped 9.66 percent to $6.36 in aftermarket trading session. The company announced that its finance chief will resign at the end of January for personal reasons.

Laredo Petroleum Holdings, Inc. (NYSE:LPI) shares plunged 6.08 percent to $18.62 in aftermarket trading session. The company stock gained more than 4 percent in regular trading session.

United Parcel Service, Inc. (NYSE:UPS) shares declined 2.7 percent to $70.51 in post market trading session. The stock has a 52-week low of $60.74, a 52-week high of $77.00 and $69.93 billion in market capitalization.

Mueller Water Products, Inc. (NYSE:MWA) shares declined 2.65 percent to $2.18 in aftermarket trading session. The company stock surged more than 4 percent in regular trading session.

Pacific Drilling S.A. (NYSE:PACD) shares declined 2.36 percent to $8.69 in post market trading session. Morgan Stanley initiated coverage on shares of PACD with “overweight” rating.

Arch Coal, Inc. (NYSE:ACI) shares declined 2.03 percent to $14.49 in post market trading session. The stock has a 52-week low of $13.09, a 52-week high of $36.99 and $3.13 billion in market capitalization.

Office Depot, Inc. (NYSE:ODP) shares declined 1.81 percent to $2.17 in post market trading session.

Ion Geophysical Corp. (NYSE:IO) shares declined 1.8 percent to $6 in aftermarket trading session.

Enersys (NYSE:ENS) shares declined 1.77 percent to $24.53 in aftermarket trading session. The stock has a 52-week low of $17.35, a 52-week high of $40.32 and $1.19 billion in market capitalization.

PulteGroup, Inc. (NYSE:PHM) shares declined 1.74 percent to $6.20 in post market trading session.

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