6 Winners (VSEA) (ADGF) (SGI) (ZSTN) (GMCR) (WOLF) on May 4

The major winners on May 4 were led Varian Semiconductor Equipment (NASDAQ:VSEA), which closed the trading session at $61.36, soaring $20.81, or 51.32 percent. Varian jumped on the news they were going to be acquired by Applied Materials (NASDAQ:AMAT) for $4.9 billion.

Next was Adams Golf, Inc.(NASDAQ:ADGF), which ended the day at $7.41, climbing $2.41, or 48.20 percent. The market was responding to record sales in its latest quarter.

Third best performer on May 4 was Silicon Graphics International (NASDAQ:SGI), closing at $20.49, rising $4.01, or 24.33 percent. Beating revenue and earnings estimates for their latest quarter was the catalyst.

Following SGI was ZST Digital Networks, Inc.(NASDAQ:ZSTN), which jumped to $3.47, soaring $0.58, or 20.57 percent. Answering shareholder questions appears to be the catalyst.

Green Mountain Coffee Roasters Inc. (NASDAQ:GMCR) also skyrocketed, closing at $75.98, up $11.91, or 18.59 percent. The catalyst was strong guidance from the company.

Great Wolf Resorts, Inc. (NASDAQ:WOLF) was the sixth-best performer, ending the day at $2.71, gaining $0.41, or 17.83 percent. An improved bottom line was the impetus for Great Wolf.