Benzinga's Weekend M&A Chatter

The following are the M&A deals, rumors and chatter circulating on Wall Street for Friday November 6 through Sunday November 8, 2015:

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AstraZeneca announced Friday that it agreed to acquire ZS Pharma

for $90 per share in an all-cash transaction, for an aggregate transaction value of $2.7B. The transaction is expected to close by the end of 2015. ZS Pharma shares rose 40% Friday, closing at $89.04.

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Alibaba Group Holding Limited

and Youku Tudou Inc.

announced Friday, a merger agreement, under which an affiliate of Alibaba will acquire Youku for $27.60 in cash. The deal is expected to close in Q1 of 2016. Youku shares rose more than 7% Friday to close at $26.14.

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Shares of GameStop

rose Friday, on unconfirmed chatter of a potential offer from Microsoft

. Sources say Microsoft is offering approximately $60 per share and has plans to re-brand the GameStop outlets with the Microsoft banner. GameStop shares fell $0.12 Friday, closing at $46.82.

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Weyerhaeuser Company

and Plum Creek (PCL) announced Sunday, that they have agreed to merge, creating a timber REIT with a combined value of $23 billion. Plum Creek shareholders will receive 1.60 shares of Weyerhaeuser for each share of Plum Creek held, under the agreement. The transaction is expected to close in Q1 or early Q2 of 2016. Plum Creek shares fell almost 2% Friday, closing at $40.29.