Top Percentage Gainers and Losers as of 12pm 5/09/11 (SCEI, FFHL ROSE, SMI, DTG, HTZ, SYY, CERS, LFT, ZRAN, OXGN, MOBI, GKK, EBS, TSN)

1) Sino Clean Energy

: Trading up 26.2% from Friday's close to $2.64. Sino Clean announced a $20 million share repurchase program to take place over the next twelve months. 2) Fuwei Films

: Trading up 23% from Friday's close to $3.42. Shares of Fuwei have broken through their 20-, 50-, and 200- day moving averages (six month chart) in today's session. 3) Rosetta Resources

: Trading up 18% from Friday's close to $48.50. Rosetta was upgraded from Neutral to Add at Capital One. The price target was set at $50.00. 4) Semiconductor Manufacturing International

: Trading up 12.8% from Friday's close to $5.29. Shares of Semiconductor Manufacturing set a new 52-week high of $5.33 earlier in the session. 5) Dollar Thrifty Automotive

: Trading up 12.8% from Friday's close to $78.57. Hertz Global

offered to purchase Dollar Thrifty for $2.36 billion in cash and stock - $57.60 in cash and 0.8546 in stock ($72 per share total). Dollar Thrifty's board is currently reviewing the offer.

Sysco

: Trading up 12% from Friday's close to $31.92. Cerus

: Trading up 11.8% from Friday's close to $3.03.

1) Longtop Financial Technologies

: Trading down 12.9% from Friday's close to $17.60. Shares of Longtop are approaching their 52-week low of $16.70, which was set on April 27th. 2) Zoran

: Trading down 12.5% from Friday's close to $8.38. Zoran reported a loss of $0.62 per share versus estimates of a $0.38 per share loss in the first quarter. The company expects to lose between $0.40 - $.0.43 per share for the second quarter versus estimates of a $0.20 per share loss. 3) OXiGENE

: Trading down 11.5% from Friday's close to $3.12. Shares have already traded more than seven times their daily average volume. 4) Sky-mobi

: Trading down 10.1% from Friday's close to $13.30. Shares of Sky-mobi had been up as much as 5% earlier in the session. The company reported sales of $27.1 million versus estimates of $24.85 million. Earnings per share came in at $0.00 versus $0.04 estimates. 5) Gramercy Capital

: Trading down 8.9% from Friday's close to $2.46. Gramercy Capital reported that the scheduled maturity of its $240.5 million mortgage loan has passed without repayment. As a result, the Mortgage Lenders and Mezzanine Lenders may seek to foreclose on the collateral securing the loan.

Emergent Biosolutions

: Trading down 6.4% from Friday's close to $21.52. Tyson Foods

: Trading down 5.7% from Friday's close to $17.81.