Friday's Small-Cap Winners & Losers

That helped bring down both the Russell 2000, which also harbors Par, and the S&P SmallCap 600. The indices slid 0.7% to 808.42 and 0.6% to 424.84, respectively.

On the other hand, Wesco International (WCC Quote) surged 11.7% after the Pittsburgh-based company said it will buy back up to another $400 million of its shares, having completed its prior authorization for that same amount. Shares of the company, a purveyor of electrical supplies and other products, climbed $4.55 to $43.53.

Christopher & Banks (CBK Quote) also had a quick rise after the women's-apparel retailer made 9 cents a share in the fiscal second quarter to come in a penny over targets. For its next quarter, the Minneapolis-based company expects in-line earnings of between 22 cents and 24 cents a share. Shares were up 73 cents, or 6.4%, to $12.16.