The top aftermarket NYSE losers on Tuesday were: HCA Holdings, Hill-Rom Holdings, PVH Corp, Medifast, Two Harbors Investments, Emergent Biosolutions, Jones Group, Marathon Petroleum Corp, Pioneer Natural Resources and Cal Dive International.

HCA Holdings, Inc. (NYSE:HCA) shares plunged 6.06 percent to $21.10 in aftermarket trading sessions. The company stock surged nearly 4 percent in regular trading sessions.

Hill-Rom Holdings Inc. (NYSE:HRC) shares plunged 4.32 percent to $33.00 in post-market trading sessions after narrowing its fiscal 2012 earnings outlook. For fiscal 2012, the company currently expects adjusted earnings to be in the range of $2.45 to $2.50 per share compared to its earlier estimation of $2.45 to $2.55 per share and against analysts’ estimation of $2.52 per share.

PVH Corp. (NYSE:PVH) shares declined 3.22 percent to $71.62 in aftermarket trading sessions. Sterne Agee initiated coverage on shares of PVH with a “buy” rating.

Medifast, Inc. (NYSE:MED) shares declined 3.19 percent to $15.19 in post-market trading sessions. 3.19 percent to $15.19 in aftermarket trading session. The stock has a 52-week low of $12.97, a 52-week high of $27.82 and $242.41 million in market capitalization.

Two Harbors Investments Corp. (NYSE:TWO) shares declined 2.84 percent to $9.23 in post-market trading sessions. The company announced that it plans to offer, subject to market and other conditions, 25,000,000 shares of its common stock in an underwritten public offering.

Emergent Biosolutions, Inc. (NYSE:EBS) shares declined 2.75 percent to $17.28 in aftermarket trading sessions.

Jones Group, Inc. (NYSE:JNY) shares declined 2.64 percent to $9.08 in aftermarket trading sessions.

Marathon Petroleum Corp. (NYSE:MPC) shares declined 2.61 percent to $31.00 in aftermarket trading sessions. The company stock was downgraded to an “underperform” rating from “neutral” rating at Zacks Investment Research.

Pioneer Natural Resources Co. (NYSE:PXD) shares declined 2.58 percent to $95.14 in aftermarket trading sessions. The company stock gained nearly 3 percent in regular trading sessions.

Cal Dive International, Inc. (NYSE:DVR) shares declined 2.5 percent to $2.57 in post-market trading sessions. The company stock surged more than 4 percent in regular trading sessions.