The top after-market NYSE gainers Thursday were Capital Trust, AZZ Inc, Accenture Plc, Knight Capital Group and Sealy Corp. The top after-market NYSE losers were Brookdale Senior Living, Nuveen Floating Rate Income Fund, Toro Co, Nike, Inc and EnergySolutions.

Gainers

Capital Trust, Inc. (CT) shares rallied 27.16 percent to $3.98 in post-market trading. Capital Trust announced a definitive agreement under which an affiliate of Blackstone will acquire its investment management business, operated through its subsidiary, CT Investment Management Co., LLC for $20 million.

AZZ Inc. (AZZ) shares climbed 12.51 percent to $39.11 in post-market trading after the company raised its full-year earnings outlook. The company currently expects fiscal 2013 earnings to be in a range of $2.25 to $2.40 per share on revenues of $575 to $600 million, up from its prior estimate of $2.05 to $2.15 per share on revenues of $550 to $575 million.

Accenture Plc. (ACN) shares surged 3.84 percent to $67.89 in post-market trading as its full-year earnings guidance topped estimates. The company expects the fiscal 2013 earnings to be in a range of $4.22 to $4.30 per share while analysts expect a net profit of $4.14 per share.

Knight Capital Group, Inc. (KCG) shares gained 1.87 percent to $2.72 in post-market trading.

Sealy Corp. (ZZ) shares advanced 1.83 percent to $2.23 in post-market trading. Glancy Binkow & Goldberg LLP announced Thursday that it was investigating potential claims against the Board of Directors of Sealy Corp related to the proposed acquisition of the Company by Tempur-Pedic International, Inc.

Losers

Brookdale Senior Living Inc. (BKD) shares plunged 5.51 percent to $22.10 in post-market trading. The company stock climbed nearly 6 percent in regular trading.

Nuveen Floating Rate Income Fund (JFR) shares plunged 3.92 percent to $12.00 in post-market trading.

Toro Co. (TTC) shares fell 3.79 percent to $37.74 in post-market trading. The stock has a 52-week low of $22.52, a 52-week high of $40.76 and $2.30 billion in market capitalization.

Nike, Inc. (NKE) shares declined 3.65 percent to $92.50 in post-market trading. Its first quarter, the net profit declined to $567 million or $1.23 per share from $645 million or $1.36 per share in the same period last year.

EnergySolutions Inc. (ES) shares declined 3.57 percent to $2.70 in post-market trading. The company stock surged more than 4 percent in regular trading.