Top Percentage Gainers and Losers as of 2pm 06/15/11

Best

1) Hollysys Automation Technologies (NASDAQ: HOLI): Shares of Hollysys Automation Technologies are currently trading down 14.8% from yesterday's close to $11.12. The stock started the session in negative territory, but heavy buying volume began to push shares up starting at 9:54am.

2) DST Systems (NYSE: DST): Shares of DST Systems are currently trading up 13% from yesterday's close to $54.59. The company announced that it has received numerous buyout offers in the mid $60 per share range. DST said that one of the offers is from Russell Glass – head of investment firm RDG Capital. The stock had traded as high as $59.49 earlier in the session.

3) China Medical Technologies (NASDAQ: CMED): Shares of China Medical Technologies are currently trading up 11.7% from yesterday's close to $9.03. The company announced that Chengxuan, one of its major shareholders, purchased 110,000 shares at an average price of $7.33. The stock recently hit a 52-week low of $7.11 on June 8th.

4) L&L Energy (NASDAQ: LLEN): Shares of L&L Energy are currently trading up 9.7% from yesterday's close to $5.32. The stock recently hit a 52-week low of $4.30 on June 10th. The year-to-date performance of L&L Energy has been a loss of 52.9%. Shares had traded as high as $5.50 in today's action.

5) Regeneron Pharmaceuticals (NASDAQ: REGN): Shares of Regeneron Pharmaceuticals are currently trading up 8.4% from yesterday's close to $59.64. On Friday, the U.S. Food and Drug Administration advisory panel is scheduled to release its findings on the company's eye drug VEGF Trap-Eye.

Other Notable Gainers

A-Power Energy Generation Systems (NASDAQ: APWR): Shares of A-Power Energy Generation Systems are currently trading up 7.7% from yesterday's close to $2.35. The stock started out the day in negative territory, but heavy buying volume began to push shares up starting at 10:04am. The stock recently hit a 52-week low of $2.25 on June 10th.

Sinovac Biotech (NASDAQ: SVA): Shares of Sinovac Biotech are currently trading up 6.6% from yesterday's close to $3.21.

Korn/Ferry International (NYSE: KFY); Shares of Korn/Ferry International are currently trading up 6.4% from yesterday's close to $22.91.

RealD (NYSE: RLD): Shares of RealD are currently trading up 6.4% from yesterday's close to $24.46.

Worst

1) Toreador Resources (NASDAQ: TRGL): Shares of Toreador Resources are currently trading down 21.7% from yesterday's close to $3.96. The stock started out the day in neutral territory, but heavy selling volume began to push shares down starting at 11:01am. Shares have already traded more than four times their average daily volume. The stock hit a 52-week low of $3.77 in today's session. The year-to-date performance of Toreador has been a loss of 74.5%.

2) Tuesday Morning (NASDAQ: TUES): Shares of Tuesday Morning are currently trading down 14.6% from yesterday's close to $3.97. The company announced that it is expecting earnings of $0.25 to $0.30 per share for the fiscal year ending June 30. Revenue is expected to come in at $820 to $830 million. Tuesday Morning had previously anticipated earnings of $0.30 to $0.34 per share on revenue of $830 to $836 million.

3) Quantum Fuel Systems Technologies (NASDAQ: QTWW): Shares of Quantum Fuel Systems Technologies are currently trading down 12.4% from yesterday's close to $3.25. After failing to break above $5.66 resistance, the stock looks poised to test its 52-week low of $2.25, which was set on May 5th.

4) Country Style Cooking Restaurant Chain (NYSE: CCSC): Shares of Country Style Cooking Restaurant Chain are currently trading down 11.7% from yesterday's close to $10.31. The stock is looking to test its 52-week low of $9.55, which was set on June 6th.

5) Majesco Enertainment (NASDAQ: COOL): Shares of Majesco Entertainment are currently trading down 11.2% from yesterday's close to $3.23. The stock recently hit a 52-week high of $4.53 on June 13th. Shares broke below their 50-day simple moving average (one year daily chart) in today's session.

Other Notable Losers

Owens-Illinois (NYSE: OI): Shares of Owens-Illinois are currently trading down 10.8% from yesterday's close to $26.34. The company cut its Q2 earnings estimates, citing higher-than-expected manufacturing and delivery costs. The stock is nearing its 52-week low of $24.91, which was set on August 31st.

AVEO Pharmaceuticals (NASDAQ: AVEO): Shares of AVEO Pharmaceuticals are currently trading down 10.3% from yesterday's close to $17.12. The company announced a 5.75 million share stock offering plan at $17.50 per (an 8.3% discount from Tuesday's closing price). AVEO said it is raising the funds for research and development, and capital expenditures.

NetQin Mobile (NYSE: NQ): Shares of NetQin Mobile are currently trading down 7% from yesterday's close to $4.33. The stock recently hit a 52-week low of $3.95, which was set on June 13th.

SouFun Holdings (NYSE: SFUN): Shares of SouFun Holdings are currently trading down 7.3% from yesterday's close to $16.85. The stock has lost 27.6% over the past ten trading sessions.