Big Movers (HOC) (NTAP) (ALXN) (ARMH) (THOR) on May 6

Among the big, positive movers on Friday, May 6, were Holly Corp. (HOC), Netapp (NTAP), Alexion Pharmaceutic (ALXN), Arm Holdings Plc (ARMH) and Thoratec Corp. (THOR).

Holly Corp. (HOC) jumped $1.81, to close at $55.55, a gain of 3.37 percent.

Netapp (NTAP) was up $1.80 on the day to close at $53.30, a gain of 3.50 percent.

Alexion Pharmaceutic (ALXN) climbed $1.76 to close at $95.89, a gain of 1.87 percent.

Arm Holdings Plc (ARMH) rose $1.76 to close the session at $29.27, a gain of 6.40 percent.

Thoratec Corp. (THOR) was up $1.76 to end the day at $33.58, a gain of 5.53 percent.