Benzinga's M&A Chatter for Wednesday December 26, 2012

The following are the M&A deals, rumors and chatter circulating on Wall Street for Wednesday December 26, 2012:

:

Sina

has denied that Alibaba is seeking an investment in its micro-blogging service, Weibo, according to

. Rumors had been circulating that Alibaba planned to take a 20 percent stake in Sina Weibo for up to $3 billion. Sina shares, which had sold off on the news in the pre-market, closed at $48.01 Wednesday, a gain of 1.5% on lower than average volume.

:

Diodes Incorporated

and BCD Semiconductor Manufacturing

announced Wednesday that Diodes has entered into an Agreement and Plan of Merger to acquire BCD. At the effective date of the merger, each American Depository Share, which represents six ordinary shares of BCD, will be converted into the right to receive $8.00 in cash, without interest. The aggregate consideration will be approximately $151 million. The boards of both companies have approved the transaction, which is still subject to approval by BCD's shareholders, as well as other customary closing conditions and regulatory approvals. The transaction is expected to close late in the first quarter of 2013 or early in the second quarter. BCD Semiconductor closed at $3.98 Wednesday, and traded at $5.90 after-hours.

:

McKesson Corporation

announced Wednesday that it has received notification of early termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, in connection with the proposed acquisition of PSS World Medical

. The termination of this waiting period satisfies one of the conditions for McKesson's proposed acquisition of PSS World Medical. on October 25, 2012, McKesson and PSS World Medical signed a definitive agreement under which McKesson will acquire all outstanding shares of PSS World Medical for $29.00 per share in cash. The acquisition is expected to close in the first calendar quarter of 2013. PSS World Medical closed at $28.85 Wednesday a gain of $0.36 on 1.5 times average volume.