Benzinga's M&A Chatter for Thursday January 28, 2015

The following are the M&A deals, rumors and chatter circulating on Wall Street for Thursday January 28, 2015

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Shares of GlaxoSmithKline

surged higher Thursday, on unconfirmed market chatter of a potential offer from Johnson & Johnson

. "Sources" say the offer could be the low $50s in cash and stocks. Spokespersons for GSK and JNJ were not available for comment. GlaxoSmithKline closed at $40.64 on Thursday up $0.04.

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Shares of Ambarella

rose as high as $38.50 Thursday, on unconfirmed market chatter of a potential offer of $52 in cash from Broadcom

, according to "sources." Broadcom is being acquired by Avago Technologies for $37 billion. Ambarella closed at $37.41 on Thursday, up 2.69%.

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Shares of Interxion Holding

spiked higher Thursday, on a report from

that it is a takeover target of Digital Realty Trust

. Interxion and Digital Realty trust did not respond to requests for comment. Interxion closed at $31.14 on Thursday, up 7.%.

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Brookfield Asset Management Inc

has been contemplating the acquisition of General Growth Properties Inc

, according to sources as reported by

on Thursday. Brookfield currently owns approximately 34% of General Growth Properties is said to have approached potential partners about taking the company private. Brookfield declined comment on the report; General Growth did not respond to requests for comment. 29.6631.14 on Thursday, up 2.21%.