Benzinga's Volume Movers (WFMI, IPGP, ARTC, DIOD)

Whole Foods Market Inc (NASDAQ: WFMI) shares moved up 11.37% to $59.86 at 10:25 am. The volume of WFMI shares traded was 579% higher than normal. WFMI raised its 2011 projections for profit and sales. IPG Photonics Corporation (NASDAQ: IPGP) shares rose 25.53% to $43.62. The volume of IPGP shares traded was 527% higher than normal. IPGP lifted its earnings and revenue projections for the fourth quarter. ArthroCare Corporation (NASDAQ: ARTC) shares climbed 8.10% to $31.91. The volume of ARTC shares traded was 499% higher than normal. ARTC reported settlement of United States Securities and Exchange Commission (SEC) investigation. Diodes Incorporated (NASDAQ: DIOD) shares gained 12.29% to $28.79. The volume of DIOD shares traded was 437% higher than normal. DIOD reported 25.7% y/y rise in its Q4 revenue. Read more from Benzinga's Markets.