Financial ratings and analytics company S&P Global (SPGI) has launched a bold £9 billion ($11 billion) takeover bid of MSCI Inc., the Morgan Stanley (MS) spin-off company that provides of some of the world's biggest equity and fixed income portfolio indexes, media outlets are reporting. 

MSCI has since refuted the claims. 

MSCI’s U.S. listed shares hit a record high today, rising as much as 13 percent after the Standard reported S&P Global had offered a $120 per share buyout. It is believed prominent shareholders of MSCI are seeking a $130 per share price tag, which would value the company at $12 billion. MSCI publish the MSCI World, MSCI EAFE and the MSCI BRIC indexes. 

There has been a swirl of activity in the exchange provider market of late. MSCI was a leading candidate in the 2014 bid for Frank Russell, the provider of the popular small-cap Russell 2000 index. MSCI eventually lost out to the London Stock Exchange (LSE) in the bidding war. (See also: How the S&P 500 and Russell 2000 Indexes Differ)

A takeover by S&P Global, which already owns the iconic S&P 500 and Down Jones indexes, would mount further pressure on its rivals. Last month LSE's potential acquisition of Deutsche Börse AG hit a wall after antitrust officials had demanded LSE sell part of its online trading platform, something LSE refused to do. (See also: London Exch.-Deutsche Boerse Merger May Be Dead)

The Standard reported that there are other potential suitors for MSCI, including private equity firms. Goldman Sachs Group Inc. (GS) is advising S&P Global. 

However, late in European trading MSCI denied the rumors of a suitor. "We are not in discussions with any third party, and we have not received any offer or indication of interest," MSCI said in a statement. 

Share's in MSCI have fallen after the statement trading back below $100 a share. 

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