Shares of

Wrigley

( WWY) were among the NYSE's losers Wednesday, sliding 7% after the gum and candy maker posted third-quarter earnings slightly below Wall Street's estimate.

Wrigley posted earnings of $164.5 million, or 59 cents a share, up 11% from a year earlier. Analysts expected earnings of 60 cents a share, according to Thomson Financial. Sales rose 13% to $1.33 billion, slightly higher than Wall Street's target of $1.31 billion. Still, shares were down $4.70 to $62.15.

Norfolk Southern

(NSC) - Get Report

fell 5% after the railroad operator posted a profit drop and lower-than-expected revenue. For the third quarter, the company's earnings fell 7% to $386 million, or 97 cents a share, hit in part by a tax-related charge of 5 cents a share. Excluding the charge, earnings were in line with analysts' target.

Revenue fell 2% to $2.35 billion, short of the $2.41 billion that analysts anticipated. Shares of Norfolk Southern were down $2.54 to $51.46.

Shares of

Moody's

(MCO) - Get Report

shed 2.5% after the ratings firm reported lower-than-expected earnings and cut its guidance for the year. Moody's third-quarter profit dropped 13% to $136.9 million, or 51 cents a share. Analysts expected earnings of 51 cents a share. Revenue inched up 6% to $525 million, topping Wall Street's estimate of $520.3 million.

For the year, Moody's now expects flat earnings due to troubles in the global debt markets. Excluding one-time items, the company anticipates earnings per share in 2007 to grow in the mid- to high-single-digit percentage range. Previously, the company forecast growth in the low- to midteens. Shares of Moody's were off $1.17 to $46.21.

Among winners,

Paccar

(PCAR) - Get Report

jumped 9% after beating third-quarter profit estimates. The truck maker earned $302.3 million, or 81 cents a share, on revenue of $3.76 billion. Analysts, on average, projected earnings of 77 cents a share and revenue of $3.43 billion. Paccar shares recently changed hands at $54.95, up $4.57.

Wabtec

(WAB) - Get Report

shares climbed 8% after the company topped earnings targets and raised its 2007 guidance. For the third quarter, Wabtec earned $27.2 million, or 55 cents a share, up 57% from the prior year. Earnings from continuing operations were 54 cents a share, a penny better than analysts' forecast. Sales rose 32% to $354.8 million, handily beating Wall Street's estimate of $307.5 million.

For the year, Wabtec lifted its earnings forecast to $2.20 a share from a prior view of $2.15. The company now sees revenue growth of 22% to 24%, compared with its earlier outlook of 16% to 18%. Shares were up $2.69 to $38.02.

Shares of

Children's Place

(PLCE) - Get Report

rose 5% after the kids' clothing seller said it hired Lehman Brothers to help explore strategic alternatives. The retailer said the review could include organizational changes, a recapitalization, or other transactions. The company's former CEO, Ezra Dabah, has said he is considering making an offer to buy the company. Shares recently were adding $1.08 to $24.78.