Benzinga's M&A Chatter for Tuesday September 17, 2013

The following are the M&A deals, rumors and chatter circulating on Wall Street for Tuesday September 17, 2013:

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Shares of Clovis Oncology

rocketed higher Tuesday on a report from

that the company is considering a possible sale. A spokesperson for Clovis Oncology told

the company was not the source of the

report and declined further comment. On June 3, shares surged over $86.00 as the company reported positive results from phase I/II study of CO-1686 treatment for small cell lung cancer. Clovis Oncology closed well off the highs Tuesday at $72.44, a gain of more than 7%.

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Rockwood Holdings

announced Tuesday that it has agred to sell its Titanium Dioxide Pigments and four other non-strategic businesses to Huntsman Corporation

for an enterprise value of $1.325 billion, including the assumption of $225 million in pension obligations The deal is expected to close during H1 2014. Rockwood Holdings closed at $67.21 Tuesday, a gain of almost 1%, while Huntsman closed at $19.50, a gain of almost 2%.

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Shares of Whiting Petroleum

rose in early trading Tuesday on renewed takeover chatter. Spain's Repsol

is the rumored bidder at a reported $75 per share. Statoil

has been mentioned most often as a possible buyer. A spokesperson for Whiting declined comment on the rumor. A Repsol spokesperson was not available for comment. Whiting Petroleum closed at $54.78 Tuesday, a gain of 3.71%.