Updated from 11:03 a.m.

Shares of

Mosaic

(MOS) - Get Report

were among the

NYSE's

losers Tuesday, sliding 5.5% after the animal feed products company posted disappointing third-quarter earnings.

For the quarter ended Feb. 28, the company earned $42.2 million, or 10 cents a share, on revenue of $1.28 billion. Excluding a one-time gain, the company earned 5 cents a share. Analysts polled by Thomson First Call expected earnings of 16 cents a share on revenue of $1.28 billion. During the year-earlier period, the company posted a loss of $71.6 million, or 19 cents a share, on revenue of $1.07 billion. Mosaic said that costs were "unacceptably high" during the quarter, especially in its phosphates business. Shares closed down $1.59 to $27.51.

United Rentals

(URI) - Get Report

jumped 17.5% after the company said that it is exploring strategic alternatives, including a possible sale of the company. UBS Investment Bank and Credit Suisse have been hired as financial advisers.

The company also announced the retirement of its chief executive officer. Wayland Hicks's retirement will be effective June 4. He'll be replaced on an interim basis by Michael Kneeland. Shares closed up $4.81 to $32.36.

Shares of

Cascade

(CAE) - Get Report

rose 10.3% after the company posted better-than-expected fourth-quarter results. For the quarter ended Jan. 31, the company earned $10.2 million, or 80 cents a share, on revenue of $118.9 million. Analysts expected earnings of 75 cents a share on revenue of $116.7 million. During the year-earlier quarter, the company earned $8.3 million, or 63 cents a share, on revenue of $108.4 million. Shares were trading up $6.12 to $65.39.

AZZ

(AZZ) - Get Report

rose 1.7% after the maker of electrical products posted fourth-quarter results that were better than expected. For the period ended Feb. 28, the company earned $7 million, or $1.16 a share, on revenue of $79.6 million. Analysts expected earnings of 84 cents a share on revenue of $76.4 million. During the year-earlier quarter, the company earned $2.6 million, or 45 cents a share, on revenue of $50.3 million.

Looking ahead, AZZ continues to see fiscal 2008 earnings of $2.70 to $2.80 a share. The company projects revenue of $275 million to $285 million. Shares closed up 81 cents to $48.76.

Shares of

Valspar

(VAL) - Get Report

slipped 1.7% after the maker of paints and coatings warned that second-quarter earnings would be below Wall Street's forecast. For the quarter ending April 27, the company sees earnings of 36 cents to 40 cents a share. Analysts projected earnings of 49 cents a share. For the full year, the company now sees earnings falling to the low end of its previous guidance of $1.80 to $1.90 a share. Analysts projected earnings of $1.84 a share. Valspar said that its results are being hurt by continued soft demand in its architectural paints and wood coatings businesses. Shares closed down 49 cents to $27.61.

NYSE volume leaders included

Seagate Technology

(STX) - Get Report

, down $1.46 to $22;

Advanced Micro Devices

(AMD) - Get Report

, down 8 cents to $13.27;

Ford

(F) - Get Report

, up 11 cents to $8.19;

Kraft Foods

( KFT), down 7 cents to $31.24;

First Data

(FDC) - Get Report

, up 2 cents to $32.40;

EMC

(EMC)

, down 19 cents to $14.19; and

General Electric

(GE) - Get Report

, up 10 cents to $34.88.

Nasdaq

volume leaders included

Nuvelo

( NUVO), which was up 45 cents earlier in the day but closed down 28 cents to $5.40;

Applied Materials

(AMAT) - Get Report

, up 76 cents to $19.41;

Intel

(INTC) - Get Report

, up 58 cents to $20.68;

Dendreon

(DNDN)

, which was up 76 cents earlier in the day but closed down $1.43 to $22.15;

Oracle

(ORCL) - Get Report

, up 28 cents to $18.85;

Microsoft

(MSFT) - Get Report

, down 17 cents to $28.40;

Adolor

( ADLR), down $5.12 to $3.60;

Cell Genesys

( CEGE), down 78 cents to $6.08; and

Cisco Systems

(CSCO) - Get Report

, down 21 cents to $25.99.