Shares of

Timken

(TKR) - Get Report

were among the

NYSE's

winners Tuesday, rising 9% after the steel products company boosted its first-quarter earnings projection.

The company expects to report earnings, excluding items, of 71 cents a share, up from an earlier view of 55 cents to 60 cents a share. Analysts polled by Thomson First Call project earnings of 59 cents a share. "We are seeing continued strong demand from industrial markets," Timken said. "This has translated into better-than-expected first quarter performance in our steel business." During the year-earlier period, the company earned 64 cents a share.

For all of 2006, Timken now sees earnings of $2.80 to $2.95 a share, up from an earlier view of $2.65 to $2.80 a share. Analysts project earnings of $2.74 a share. Timken plans to issue first-quarter results on April 27. Shares were trading up $2.69 to $34.10.

Manpower

(MAN) - Get Report

shares rose 8% after the company posted better-than-expected first-quarter results. The employment services company earned $52.6 million, or 59 cents a share, on revenue of $3.93 billion. The results included a one-time gain of 27 cents a share and a charge of 16 cents a share. Analysts expected earnings of 38 cents a share on revenue of $3.87 billion.

Manpower said foreign currency chipped away at its profit; on a constant currency basis, the company would have earned 65 cents a share. Last year, the company reported first-quarter earnings of $32.2 million, or 35 cents a share, on revenue of $3.76 billion.

For the second quarter, Manpower predicts earnings of 76 cents to 80 cents a share, including a negative impact from currency of 3 cents a share. Analysts project earnings of 76 cents a share. Shares were up $4.70 to $61.

Shares of

MEMC Electronic Materials

(WFR)

jumped 12% after the company signed a nonbinding letter of intent to supply solar wafers to

Motech Industries

over the next eight years. MEMC said sales to Motech over the eight-year period would reach at least $1.6 billion. The agreement, which is contingent on due diligence by MEMC and its advisers, is expected to close by July. Shares were trading up $4.36 to $41.22.

Advo

( AD) shares fell 3% after the mailer of coupons and circulars warned that fiscal second-quarter results would be below expectations. The company anticipates earnings of 16 cents to 18 cents a share on revenue of about $355 million. Analysts project earnings of 33 cents a share on revenue of $358.5 million. During the year-earlier period, the company earned 33 cents a share on revenue of $338.8 million.

"Although second quarter revenues are expected to be up between 4% and 5%, we are not pleased with our performance on either revenue of profits," the company said. "Both were affected primarily by softness in our high-margin zone product revenue, along with several other factors." Shares were down 84 cents to $28.25.

Shares of

Freeport McMoran

(FCX) - Get Report

rose 4% after the gold and copper producer reported better-than-expected first-quarter results. The company earned $251.7 million, or $1.23 a share, up from $130.4 million, or 70 cents a share, a year earlier. Revenue rose to $1.09 billion from $803.1 million. Analysts expected earnings of 88 cents a share on revenue of $855.2 million. Shares advanced $2.68 to $67.87.

EZCORP

(EZPW) - Get Report

climbed 15% after the pawn loan company lifted its second-quarter earnings guidance. The company now sees earnings of 54 cents to 56 cents a share for the March quarter, up from an earlier forecast of 40 cents to 43 cents a share. Analysts project earnings of 42 cents a share. The company attributed the bolstered projection to stronger gross profit and signature loan contribution. EZCORP plans to issue its second-quarter results on April 25. Shares were trading up $4.88 to $37.89.

Shares of

Northern Trust

( NT) rose 8% after the banking company's first-quarter results beat expectations. The company earned $163 million, or 74 cents a share, on revenue of $743 million. Analysts expected earnings of 67 cents a share on revenue of $705.9 million. During the year-earlier quarter, Northern Trust earned $139.1 million, or 63 cents a share, on revenue of $621.1 million.

"We are very pleased with this quarter's outstanding revenue and earnings growth," the company said. "This performance was broad-based, driven by record trust, investment and other servicing fees, net interest income and foreign exchange revenues." Shares were up $4.15 to $56.91.

NYSE volume leaders included

UnitedHealth Group

(UNH) - Get Report

, up 27 cents to $51.94;

General Electric

(GE) - Get Report

, down 7 cents to $33.22;

Nortel Networks

(NT)

, up 3 cents to $2.80;

Micron Technology

(MU) - Get Report

, up 44 cents to $15.56;

Lucent Technologies

( LU), unchanged at $2.96;

Marsh & McLennan

(MMC) - Get Report

, up 28 cents to $29.99;

Boston Scientific

(BSX) - Get Report

, up 42 cents to $21.90; and

Time Warner

(TWX)

, up 7 cents to $16.88.

Nasdaq

volume leaders included

Sun Microsystems

(SUNW) - Get Report

, unchanged at $4.84;

JDSU

(JDSU)

, up 5 cents to 3.46;

Intel

(INTC) - Get Report

, down 4 cents to $19.15;

Sirius Satellite Radio

(SIRI) - Get Report

, up 7 cents to $5.19;

Ciena

(CIEN) - Get Report

, up 2 cents to $4.16;

Symantec

(SYMC) - Get Report

, down 33 cents to $16.06;

Nvidia

(NVDA) - Get Report

, down $1.28 to $28.40;

Cisco

(CSCO) - Get Report

, up 12 cents to $20.98; and

Microsoft

(MSFT) - Get Report

, up 12 cents to $26.96.