The top after-market NYSE gainers Tuesday were Banco Santander Brasil, Actuant Corp, Allison Transmission, Mueller Water Products and Forest Oil Corp. The top after-market NYSE losers were hhgregg, Best Buy Co, Hovnanian Enterprises, Goldcorp and SandRidge Mississippian Trust.

Gainers:

Banco Santander Brasil SA (BSBR) shares surged 3.68 percent to $7.17 in post market trading. The company stock slumped more than 7 percent in regular trading.

Actuant Corp. (ATU) shares gained 3.22 percent to $27.45 in post market trading. The stock has a 52-week low of $17.47, a 52-week high of $29.97 and $1.94 billion in market capitalization.

Allison Transmission Holdings, Inc. (ALSN) shares advanced 2.73 percent to $18.11 in post market trading. The company stock plunged more than 4 percent in regular trading.

Mueller Water Products, Inc. (MWA) shares rose 2.42 percent to $3.51 in post market trading. Earlier this week, the company stock was upgraded to “buy” rating from “hold” rating at Brean Murray Carret & Co. with a price target of $5.10.

Forest Oil Corp. (FST) shares gained 2.22 percent to $6.29 in post market trading. The company stock slumped nearly 10 percent in regular trading after forecasting lower production for the second half of the year.

Losers:

hhgregg, Inc. (HGG) shares slumped 21.14 percent to $9.10 in post market trading after lowering its fiscal 2013 earnings guidance. The company currently expects fiscal 2013 earnings to be in a range of $0.90 to $1.05 per share, down from prior estimation of $1.12 to $1.27 per share and also fell short of analysts’ estimation of $1.20 per share.

Best Buy Co. Inc. (BBY) shares plunged 4.35 percent to $20.22 in post market trading. The stock has a 52-week low of $17.53, a 52-week high of $31.75 and $7.19 billion in market capitalization.

Hovnanian Enterprises Inc. (HOV) shares declined 3.7 percent to $2.60 in post market trading after plunging nearly 8 percent in regular trading.

Goldcorp Inc. (GG) shares declined 2.99 percent to $35.65 in post market trading after lowering fiscal 2012 gold production guidance. The company currently expects a full-year 2012 gold production to be in the range of 2.35 to 2.45 million ounces, down from prior estimation of 2.6 million ounces.

SandRidge Mississippian Trust I (SDT) shares fell 2.15 percent to $25.54 in post market trading.

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