The top aftermarket NYSE gainers Tuesday were: Hillenbrand, Stepan, Hewlett-Packard, Hecla Mining, Williams Companies, Edwards Lifesciences, Omega Healthcare Investors, Dean Foods, General Motors and Beazer Homes USA.

Hillenbrand Inc. (NYSE:HI) shares surged 4.11 percent to $22.81 in post market trading session. The stock has a 52-week low of $16.33, a 52-week high of $24.20 and $1.37 billion in market capitalization.

Stepan Co. (NYSE:SCL) shares gained 4.01 percent to $86.17 in aftermarket trading session. James E Hurlbutt, V.P. & CFO of SCL sells 3,500 shares of SCL on 11/10/2011 at an average price of $79.86 a share.

Hewlett-Packard Co. (NYSE:HPQ) shares gained 3.23 percent to $28.20 in aftermarket trading session. The stock has a 52-week low of $21.50, a 52-week high of $49.39 and $56.11 billion in market capitalization.

Hecla Mining Co. (NYSE:HL) shares advanced 2.91 percent to $6.57 in aftermarket trading session.

Williams Companies, Inc. (NYSE:WMB) shares advanced 2.61 percent to $31.39 in aftermarket trading session.

Edwards Lifesciences Corp. (NYSE:EW) shares advanced 2.43 percent to $70.44 in post market trading session. Jefferies reiterated its buy rating on shares of EW and have a price target of $92.00.

Omega Healthcare Investors, Inc. (NYSE:OHI) shares gained 2.4 percent to $17.93 in aftermarket trading session.

Dean Foods Co. (NYSE:DF) shares advanced 2.24 percent to $10.10 in aftermarket trading session.

General Motors Co. (NYSE:GM) shares advanced 1.95 percent to $23.44 in post market trading session. The stock has a 52-week low of $19.05, a 52-week high of $39.48 and $36.53 billion in market capitalization.

Beazer Homes USA, Inc. (NYSE:BZH) shares advanced 1.8 percent to $2.26 in post market trading session. Its fourth quarter net loss narrowed to $43.18 million or $0.58 per share compared to loss of $59.53 million or $0.81 per share in the same quarter a year-ago.

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