Shares of Pilgrim's Pride ( PPC) were among the NYSE's winners Monday, rising 9% after the company raised its third-quarter earnings guidance.

The poultry company now expects earnings of $1.17 to $1.22 a share, up from earlier guidance of 81 cents to $1 a share. Analysts polled by Thomson First Call had been expecting earnings of 93 cents a share. The company attributed the revised guidance to better results at its U.S. and Mexico chicken operations.

Looking ahead, Pilgrim's Pride left its fourth-quarter earnings guidance of 73 cents to 91 cents a share intact. Analysts are expecting earnings of 85 cents a share. Shares were recently trading up $3.36 to $39.33.

Helen of Troy ( HELE) fell 6% after the personal care products company posted first-quarter earnings that fell short of expectations. The company earned $10.5 million, or 33 cents a share, on sales of $127.4 million. Analysts were expecting earnings of 39 cents a share. A year ago the company earned $14.5 million, or 44 cents a share, on sales of $107 million. Despite the first-quarter earnings shortfall, Helen of Troy reaffirmed its full-year earnings guidance of $2.50 to $2.60 a share on sales of $615 million to $640 million. Analysts are expecting earnings of $2.39 a share. Shares were trading down $1.62 to $24.33.

Shares of Dreamworks ( DWA) fell 14% after the company cut its second-quarter earnings outlook; said the Securities and Exchange Commission is informally probing trading in its stock; and announced the withdrawal of a $500 million secondary offering. The animation studio now expects to post a loss of 7 cents to 9 cents a share, down from earlier guidance that called for break-even results. Analysts had been expecting a profit of 9 cents a share.

Regarding the SEC probe, the company said the informal inquiry concerns trading in its stock and the disclosure of its financial results on May 10.

As for the pulled stock offering, Dreamworks said that "based on the current valuation of our shares, we believe it is in the best interest of all parties, including the company and its current shareholders, to withdraw the offering at this time." Shares were trading down $3.68 to $23.13.

Zions Bancorp ( ZION), which last week announced a $1.7 billion acquisition of Amegy ( ABNK), said Monday that its second-quarter earnings would top forecasts. The company expects earnings of $1.28 to $1.30 a share. Analysts are expecting earnings of $1.24 a share. Shares were recently trading down 11 cents to $69.76.

Shares of WPT Enterprises ( WPTE) fell 9% after the company said that it has been unable to substantiate the credibility of a $700 million takeover offer that it received last week. On July 7, WPT received a term sheet from the Las Vegas-based law firm of Goodman and Chesnoff, which was purportedly representing a group of investors led by poker star Doyle Brunson. The term sheet, which did not provide WPT with enough information to evaluate the deal, indicated that the offer would expire on July 12, with a provision for WPT to request a one-week extension. On Friday, however, WPT learned that Goodman and Chesnoff is no longer involved in the matter. "If the offer cannot be substantiated and accepted by Tuesday at 5:30 p.m., the offer will lapse by its own terms," WPT said in a statement. Shares were trading down $2.30 to $24.20.

NYSE volume leaders included Lucent Technologies ( LU), up 4 cents to $3.02; IMS Health ( RX), up 90 cents to $26.79; General Electric ( GE), up 35 cents to $35.34; Pfizer ( PFE), down 9 cents to $27.05; Motorola ( MOT), up 30 cents to $18.84; and MBNA ( KRB), up 1 cent to $25.80.

Nasdaq volume leaders included Sirius Satellite Radio ( SIRI), up 21 cents to $7.19; Microsoft ( MSFT), up 23 cents to $25.32; Intel ( INTC), up 2 cents to $27.56; Cisco Systems ( CSCO), up 13 cents to $19.44; Sun Microsystems ( SUNW), up 2 cents to $3.65; Applied Materials ( AMAT), up 52 cents to $17.18; and Oracle ( ORCL), up 12 cents to $13.68.

If you liked this article you might like

Thursday's Tech Winners & Losers

Thursday's Tech Winners & Losers

Thursday's Winners & Losers: FTD

Thursday's Winners & Losers: FTD

Wednesday's Winners & Losers: Superior Offshore

Wednesday's Winners & Losers: Superior Offshore

Wednesday's Tech Winners & Losers

Wednesday's Tech Winners & Losers

Tuesday's Winners & Losers: Fossil

Tuesday's Winners & Losers: Fossil