Collective Brands Inc. (NYSE: PSS) improved 15.86 percent in price to close Thursday at $20.38. Volume of 7,659,229 shares was five times its normal full-day average volume. PSS announced Thursday it earned $47.6 million, or 75 cents a share, on the period, up from $36.9 million, or 57 cents a share, in the same quarter last year.

Motorola Inc. (NYSE: MOT) was among the volume leaders late Thursday afternoon, trading in 51,736,649 shares, very nearly doubling its full-day average. MOT shares went down on the day, however, by 0.44 percent to $7.97. Motorola Mobility, the communications subsidiary of Motorola, today said it is buying home networking specialist 4Home.

TRC Companies Inc. (NYSE: TRR) gave back 8.83 percent in price Thursday to $2.58, on volume of 19,585 shares, nosing out its full-day average of 14,556. The Lowell, Mass.-based TRR is a recognized leader in engineering, consulting, and construction management services to the energy, environmental, and infrastructure markets