Top Percentage Gainers and Losers as of 12pm 04/05/11 (KNDL, PPO, DUSA, ROCK, SHS, TBL, SMSI, ARO, SCEI, SVNT)

Best 1) Kendle International KNDL: Trading up 57.8% from yesterday's close to $14.99. Kendle International is to be acquired by INC Research for $15.25 per share in cash. The deal is valued at $232 million.

2) Polypore International PPO: Trading up 20.8% from yesterday's close to $66.49. Polypore reported earnings of $0.55 cents per share versus estimates of $0.39 per share. Revenue came in at $27.5 million.

3) DUSA Pharmaceuticals DUSA: Trading up 20% from yesterday's close to $5.44. DUSA reported a loss of -$0.02 per share versus -$0.02 for the same period last year. 4) Gibralter Industries ROCK: Trading up 19% from yesterday's close to $13.02. Gibralter reported earnings of $0.05 per share versus a loss of $0.08 per share for the same period last year. Net income rose to $8.4 million compared to a loss of $21.2 million for the same quarter last year. 5) Sauer-Danfoss SHS: Trading up 17.2% from yesterday's close to $64.50. Sauer-Danfoss reported earnings of $1.46 per share versus $0.43 per share for the same period last year. Revenue increased 46% to $565.7 million. Worst 1) Timberland TBL: Trading down 29% from yesterday's close to $29.50. Timberland reported earnings of $0.35 cents per share versus estimates of $0.59 per share. Revenue came in at $349 million versus estimates of $361 million. 2) Smith Micro Software SMSI: Trading down 22.5% from yesterday's close to $5.63. Smith Micro forecast revenue for the second quarter of $15 to 20 million versus estimates of $24.2 million. The company was downgraded from Buy to Hold at Canaccord. 3) Aeropostale ARO: Trading down 15.5% from yesterday's close to $21.53. Aeropostale cut its second quarter guidance to $0.20 per share versus its forecast of $0.35 to $0.38 per share. 4) Sino Clean Energy SCEI: Trading down 15.4% from yesterday's close to $2.96. Sino Clean announced that it intends to take action against parties responsible for “malicious and fraudulent attacks” on the company, which, the company claims, was by or on behalf of short sellers. 5) Savient Pharmaceuticals SVNT: Trading down 14.2% from yesterday's close to $9.51. Savient reported earnings of -$0.19 per share versus estimates of -$0.31 per share. Revenue came in at $1.3 million versus estimates of $2 million.