Stocks in Motion: H&R Block

Updated from 11:26 a.m. EDT

Shares of H&R Block(HRB Quote) traded actively after the NASD disclosed an enforcement action against its financial advisory unit. The securities regulator alleged H&R Block engaged in fraud when its advisers allegedly recommended to customers bonds sold by Enron in the weeks before the energy trader's storied 2001 bankruptcy. The stock rose 22 cents, or 0.5%, to $49.59.

Shares of Taser International(TASR Quote) were among the Nasdaq's winners Monday, rising 16.4% after the Department of Homeland Security said its stun guns could be used on commercial flights in the U.S.

Specifically, Taser announced that a major international airline received approval from the Department of Homeland Security's Transportation Security Administration, which would permit trained personnel to use stun guns on flights to and from the U.S. The company, however, did not identify the airline or specify how many stun guns were ordered. Taser said there are about 17,700 passenger aircraft worldwide that could use its technology to provide additional security for passengers. Shares of Taser traded up $7.63 to $54.12. ...