Benzinga's M&A Chatter for Monday June 9, 2014

The following are the M&A deals, rumors and chatter circulating on Wall Street for Monday June 9, 2014:

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Merck

and Idenix Pharmaceuticals

announced Monday, that Merck will acquire Idenix for $24.50 per share in cash. The deal is valued at approximately $3.85 billion, and is expected to close in Q3 of 2014. Merck, through a subsidiary, will commence a tender offer to acquire all outstanding shares of Idenix Pharmaceuticals. Merck is acquiring Idenix to gain access to its hepatitis C portfolio. Idenix Pharmaceuticals shares rose 229% Monday to close at $23.79. Merck closed at $57.94, a gain of $0.09.

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Tyson Foods

announced Monday it has submitted a unilaterally binding offer to acquire Hillshire Brands

for $63 per share in cash. The offer is subject to Hillshire Brands terminating its deal to acquire Pinnacle Foods

. The deal is valued at approximately $8.55 billion. Pilgrim's Pride

, which had bid $55.00 per share for Hillshire, announced it was withdrawing its proposal, Hillshire Brands closed Monday at $62.06, a gain of more than 5%. Tyson lost 6.5% to close at $37.50, while Pilgrim's Pride shares also lost 6.5% to close at $24.51.

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Analog Devices

and Hittite Microwave

today announced that ADI will acquire Hittite for $78 per share in cash. The deal is expected to close near the end of ADI's Q3 of FY 2014. Hittite Microwave closed Monday at $77.90, a gain of 28%, while Analog Devices closed at $55.31, a gain of 5%.

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Shares of International Game Technology

surged higher Monday, on a report from

that the company was exploring a sale and had hired Morgan Stanley as an adviser, according to sources. Spokespersons for the two companies declined comment. International Game Technology shares closed Monday at $14.31, a gain of 14%.

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Shares of Chico's FAS

rose 10% after-hours, on a report from

that the company was exploring a sale to private equity, according to sources. The asking price could be as high as $20 per share, based on the mention of a 30% premium to the current share price. Chicos declined comment to

. Chico's FAS shares closed Monday at $15.37, and traded as high as $17.50 after-hours.