Shares of Aviall ( AVL) were among the NYSE's winners Monday, soaring 25% after the provider of aviation parts agreed to be acquired by Boeing ( BA - Get Report) for $1.7 billion.

Boeing will pay Aviall holders $48 a share in cash, representing a 27% premium to Friday's closing price of $37.70. The deal also includes the assumption of about $350 million in debt. "We are delighted to become part of the Boeing Company," Aviall said in a statement. "Our combined industry knowledge creates a dynamic team that will add to our customers' efficiency, operational savings and profitability." The deal is expected to close during the third quarter. Shares of Aviall recently were trading up $9.28 to $46.98, while shares of Boeing rose 9 cents to $83.54.

Aramark vaulted 19% after the food-service company received a buyout proposal worth $32 a share in cash. The price represents a 14% premium to Friday's closing price of $28.11. The offer, which was made by a group of investors led by Aramark's CEO, is being considered by a special committee set up by the board of directors, Aramark said. In the event that a deal is consummated, CEO Joseph Neubauer would continue to lead the company after the company goes private. Shares were recently trading up $5.36 to $33.47.

Shares of Agco ( AG - Get Report) jumped 12% after the maker of farm equipment posted first-quarter results that topped expectations. The company earned $17.3 million, or 19 cents a share. Excluding items, earnings were $17.4 million, or 19 cents a share, above analysts' target of 11 cents. Revenue totaled $1.17 billion, besting Wall Street's estimate of $1.14 billion. During the year-earlier quarter, the company posted adjusted earnings of $22.4 million, or 24 cents a share, on revenue of $1.26 billion. Shares were trading up $2.94 to $26.61.

Sea Containers ( SCR.A) tumbled 18% after the company delayed the filing of its 2005 annual report. The company, which leases marine containers, said it hasn't completed the report and its internal processes with respect to applicable certifications. What's more, Sea Containers expects its auditors to include an explanatory paragraph in the Form 10-K raising substantial doubt about the company's ability to continue as a going concern. The company, which was not in compliance with some of its financial covenants at the end of 2005, said it continues to work with its lenders on obtaining waivers or amendments on certain credit facilities. Shares were trading down $1.27 to $5.75.

Shares of Gevity jumped 13% after the human resources company posted mixed first-quarter results but issued a bullish forecast. For the first quarter, Gevity reported earnings of $8.2 million, or 30 cents a share, on revenue of $169.7 million. Analysts surveyed by Thomson First Call expected earnings of 31 cents a share and revenue of $163.8 million. During the year-earlier quarter, the company earned $7.5 million, or 26 cents a share, on revenue of $153.9 million.

Looking ahead, Gevity sees second-quarter earnings of 35 cents to 37 cents a share, above analysts' mean estimate of 34 cents. The company predicts revenue of $162 million to $172 million, compared with Wall Street's forecast of $160.3 million. For the third quarter, the company anticipates earnings of 36 cents to 38 cents a share, with revenue of $169 million to $179 million. Analysts, meanwhile, project earnings of 37 cents a share and revenue of $166.8 million. Finally, the company expects fourth-quarter earnings of 41 cents to 43 cents a share on revenue of $183 million to $193 million. Analysts project earnings of 39 cents a share and revenue of $173.5 million. Shares were trading up $3.36 to $29.05.

NYSE volume leaders included Nortel Networks , down 2 cents to $2.64; Lucent Technologies , down 2 cents to $2.77; Motorola , down 43 cents to $20.92; Ford ( F), up 3 cents to $6.98; Wal-Mart ( WMT - Get Report), up $1.24 to $46.27; Pfizer ( PFE), unchanged at $25.33; Aetna ( AET), up 38 cents to $38.88; Time Warner ( TWX), down 1 cent to $17.39; Citigroup ( C), down 6 cents to $49.89; and Bank of America ( BAC), down 20 cents to $49.72.

Nasdaq volume leaders included Microsoft ( MSFT), up 24 cents to $24.39; Intel ( INTC), down 26 cents to $19.72; Level 3 Communications ( LVLT), up 33 cents to $5.73; Sun Microsystems ( SUNW), down 2 cents to $4.98; Cisco ( CSCO), up 38 cents to $21.33; Ciena ( CIEN), down 5 cents to $4.04; Sirius Satellite Radio ( SIRI), up 6 cents to $4.74; and Conexant Systems ( CNXT), up 15 cents to $3.69.