The top after-market NYSE losers on Wednesday are: Carnival Corp, Christopher & Banks, Phoenix Companies, Orbitz Worldwide, Quiksilver and Invesco.

Carnival Corp (NYSE:CCL) shares plunged 42.11 percent to $26.97 in aftermarket trading. In regular trading, the stock rose 3.12 percent to $46.59 after recording a new 52-week high of $47.22 following its solid fourth-quarter performance and upbeat 2011 outlook.

Christopher & Banks Corp. (NYSE:CBK) shares declined 3.48 percent to $5.55 in the post market trading hours. The company reported a third quarter net loss of $9.2 million or $0.26 per share, compared with net income of $7 million or $0.19 per share a year ago, mainly hurt by decline in revenues as well as reduced gross margins.

Phoenix Companies, Inc (NYSE:PNX) shares declined 2.65 percent to $2.57 in the post market trading hours.

Orbitz Worldwide, Inc. (NYSE:OWW) shares declined 1.98 percent to $5.95 in the post market trading hours on Wednesday. The company has made a split with American Airlines after an Illinois court allowed American Airlines to cancel its contracts with Orbitz on Tuesday.

Quiksilver, Inc. (NYSE:ZQK) shares declined 1.92 percent to $1.36 in the post market trading hours. The stock has a 52 week low of $1.98 and 52 week high of $6.09 and has 163.94M outstanding shares.

Invesco Ltd. (NYSE:IVZ) shares declined 1.09 percent to $23.49 in the post market trading hours. The stock has a 52 week low of $16.37 and 52 week high of $24.38 and has 462.06 million outstanding shares.