Top Percentage Gainers and Losers as of 2pm 5/09/11 (FFLL, ROSE, ONTY, DTG, HTZ, SYY, SCEI, SMI, CERS, HW, ZRAN, MOBI, OXGN, GKK, LFT, HRB, ACHN)

Best

1) Fuwei Films (NASDAQ: FFHL): Trading up 28.4% from Friday's close to $3.42. The former controlling shareholders of Fuwei have transferred their ownership in numerous holding companies to the Administration Company, Qing Liu and Zhixin Han. The company is hoping that a transfer of share ownership will reduce NASDAQ listing concerns. Shares of Fuwei have broken through their 20-, 50-, and 200- day moving averages (six month chart) in today's session.

2) Rosetta Resources (NASDAQ: ROSE): Trading up 20.2% from Friday's close to $49.59. Rosetta was upgraded from Neutral to Add at Capital One. The price target was set at $50.00. Cannacord has placed a $53 price target on the stock.

3) Oncothyreon (NASDAQ: ONTY): Trading up 13.4% from Friday's close to $5.07. Shares are trading higher despite posting a larger first quarter loss than the same period last year (loss of $0.24 versus a loss of $0.03)

4) Dollar Thrifty Automotive (NYSE: DTG): Trading up 12.9% from Friday's close to $78.70. Hertz Global (NYSE: HTZ) 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.

5) Sysco (NYSE: SYY): Trading up 12.7% from Friday's close to $32.15. Sysco reported third quarter earnings of $0.46 per share versus estimates of $0.41 per share. Revenue came in at $9.8 billion versus estimates of $9.47 billion.

Other Notable Gainers

Sino Clean Energy (NASDAQ: SCEI): Trading up 12.38% from Friday's close to $2.36. Sino Clean announced a $20 million share repurchase program to take place over the next twelve months. Shares had traded as much as 26% higher from yesterday's close earlier in the session.

Semiconductor Manufacturing International (NYSE: SMI): 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.

Cerus (NASDAQ: CERS): Trading up 10.3% from Friday's close to $2.99.

Worst

1) Headwaters (NYSE: HW): Trading down 16% from yesterday's close to $4.09. Headwaters missed second quarter earnings estimates.

2) Zoran (NASDAQ: ZRAN): Trading down 11.3% from Friday's close to $8.50. 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) Sky-mobi (NASDAQ: MOBI): Trading down 10.5% from Friday's close to $13.25. 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.

4) OXiGENE (NASDAQ: OXGN): Trading down 10.5% from Friday's close to $3.18. Shares have already traded nearly ten times their daily average volume.

5) Gramercy Capital (NYSE: GKK): Trading down 10.4% from Friday's close to $2.42. 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.

Other Notable Losers

Longtop Financial Technologies (NYSE: LFT): Trading down 10.4% from Friday's close to $18.00. Shares of Longtop are approaching their 52-week low of $16.70, which was set on April 27th.

H&R Block (NYSE: HRB): Trading down 6.5% from Friday's close to $16.12.

Achillion Pharmaceuticals (NASDAQ: ACHN): Trading down 6.3% from Friday's close to $5.32.