On the upside
Sterne Agee upgraded Arch Coal (NYSE: ACI) to a Buy rating.
Clearwire (Nasdaq: CLWR) announced 50% savings on all Clear devices.
On the downside
Shares of Sequenom (Nasdaq: SQNM) continued falling after reporting wider losses for the second quarter last week.
Shares of OCZ Technology (Nasdaq: OCZ) fell after Seagate Technology (Nasdaq: STX) did not announce plans to acquire OCZ. A blog reported last week that Seagate would purchase OCZ.
Investors locked in profits on Groupon (Nasdaq: GRPN).
In the broad market, declining issues outpaced advancers by a margin of nearly 10 to 9 on the NYSE and by more than 5 to 3 Nasdaq. The Russell 2000 which tracks small cap stocks fell 4 points to 791.