Activision
-$1.11
5.7%
Activision Inc. stock fell to $18.46. The maker of video games such as “Guitar Hero” said the Securities and Exchange Commission escalated a probe of backdated stock options, making it a formal investigation.
Books-A-Million
$1.47
8.8%
Shares of Books-A-Million Inc. rose to $18.19. The nation’s third-biggest book retailer will pay a one- time dividend of $3 a share. A total of $50.4 million will be paid on July 5, the company said.
ImClone Systems Incorporated
-$2.93
7.4%
ImClone Systems Inc. stock slid to $36.84. The drugmaker was cut to “underweight” from “equal weight” by a Morgan Stanley analyst who questioned the effectiveness of the firm’s Erbitux drug.
US AIRWAYS
-$2.43
7.4%
Shares of US Airways Group Inc. sagged to $30.20. Twenty-two airlines must pay the U.S. government $219 million in back security fees covering more than two years. United Airlines’ parent UAL Corp. dropped $1.25, or 3.4 percent, to $35.11.
Quest Diagnostics
$2.28
4.7%
Shares of Quest Diagnostics Inc. advanced to $50.93. UBS raised its rating on shares of the nation’s largest provider of medical tests to “buy” from “neutral.”
Six Flags
-$0.31
4.7%
Six Flags Inc. stock declined to $6.26. The nation’s second-biggest theme-park operator agreed to buy its Discovery Kingdom Park in Vallejo, Calif., from the city for $52 million.
