The top after-market NYSE gainers on Tuesday are Tesoro, Humana, Alcoa and Marshall & Ilsley. The top after market NYSE losers are NIKE, Red Hat and Hovnanian Enterprises.

Gainers

Tesoro Corp. (NYSE:TSO) shares advanced 1.30 percent to $18.70 in the afterhours trading session on Tuesday after it made its fresh one-year high of $18.54 in the regular trading session. The stock has average daily volume of 5.38 million shares.

Humana Inc. (NYSE:HUM) shares advanced 0.95 percent to $55.32 in the afterhours trading session on Tuesday. The company raised its 2011 earnings guidance to $5.45 to $5.65 per share, up from previous estimate of $5.35 to $5.55 per share and the current consensus earnings estimate is $5.93 per share for the year ending December 31, 2011.

Alcoa Inc. (NYSE:AA) shares advanced 0.67 percent to $14.99 in the post market trading hours. The company shares so far surged 30.3 percent in the last three months.

Marshall & Ilsley ( NYSE:MI) shares advanced 0.88 percent to $6.85 in the aftermarket trading hours. BMO Financial Group has agreed to acquire Marshall & Ilsley for $4.1 billion in stock deal.

Losers

NIKE, Inc. (NYSE:NKE) shares declined 5.73 percent to $87.01 in the post market trading hours on Tuesday. Late Tuesday, the company reported second-quarter net profit of $457 million, or $0.94 per share, up from $375 million or $0.76 per share in the same period a year ago. But CEO Mark Parker warned of margin pressure in the quarters ahead as input costs rise.

Red Hat, Inc. (NYSE:RHT) shares declined 2.67 percent to $46.60 in the afterhours trading session. The company’s third quarter net income rose 59 percent to $26 million, or $0.13 per share, from $16.4 million, or $0.08 per share in the same quarter a year ago. Revenue rose 21 percent to $235.6 million.

Hovnanian Enterprises, Inc. (NYSE:HOV) shares declined 2.29 percent to $4.26 in the post market trading hours. The company’s fourth quarter net loss narrowed on lower land-related charges from a year earlier. Hovnanian reported a net loss of $132.1 million, or $1.68 per share, from a loss of $250.8 million, or $3.21 per share, a year ago.