Some disappointing guidance, including that from

Hartmarx

( HMX), helped weigh down the small-cap sector Friday.

Shares of the Chicago apparel maker plummeted 22.4% after it made just $542,000, or a penny a share, in the fiscal third quarter. That misses the analysts' consensus by 17 cents, according to Thomson Financial. Revenue, at $135.2 million, was also below par.

Hartmarx additionally slashed its fiscal 2007 profit guidance by at least 23 cents to between 22 cents and 27 cents a share on a lowered revenue range of $570 million to $580 million. Analysts are seeking 52 cents a share on revenue of $594.4 million. The company blamed the bleak results and outlook on worsening "disruptive conditions in the mainstream department store channel" and a recent "softening in demand from retailers in general." Shares gave up $1.43 to $4.95.

Par Pharmaceutical

( PRX), a New Jersey-based drugmaker, also tumbled on a disappointing 2007 outlook. Adjusted earnings were pegged between $1.05 and $1.20 a share, or at least 36 cents under the mean target, and sales should also come in well under expectations. Shares slid $4.26, or 19.7%, to $17.42.

Meanwhile, footwear retailer

Finish Line

(FINL)

swung to a loss of $1.8 million, or 4 cents a share, in the quarter ended Sept. 1. Last year the Indianapolis-based company earned $9.9 million, or 21 cents a share. Excluding items, that comes to an in-line profit of 13 cents a share, but shares were still sinking 7% at $4.36.

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) - Get Report

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) - Get Report

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.