Ultratech, Inc. (NASDAQ:

) shares are sharply higher today on heavy volume, but there does not appear to be any news moving the stock. At last check, shares were up $2.05 to $27.50, a gain of 8.1%. Volume is exceptionally heavy, having traded 425,000 shares already today. The average daily volume is around 250,000 shares. Ultratech, Inc. develops, manufactures, and markets photolithography and laser thermal processing equipment. I