NEW YORK/TORONTO (Reuters) - Canadian Imperial Bank of Commerce (>> Canadian Imperial Bank of Commerce) (CIBC), the fifth largest bank in Canada, and two private equity consortia are exploring offers for global asset manager Russell Investments, according to several people familiar with the matter.

Private equity firms CVC Capital Partners Ltd and Silver Lake have teamed up to pursue Russell Investments, as have Warburg Pincus LLC and TPG Capital LP, the people said this week. They and CIBC are considering bids for all of the Russell Investments assets, they added.

Northwestern Mutual Life Insurance Co, which owns Russell Investments, is hoping to find a buyer for both the investment management and indexes businesses of Russell for as much as $3 billion, the people said.

Shortlisted parties have been tentatively asked to submit offers for Russell Investments by the end of the month, the people said. Some other bidders in the auction are only interested in some of the assets. MSCI Inc (>> Msci Inc), for example, is interested only in Russell's indexes business, some of the people said.

The sources asked not to be identified because the deliberations are confidential. Northwestern Mutual, CIBC, Warburg Pincus, TPG, CVC and Silver Lake declined to comment, while a MSCI spokeswoman did not respond to a request for comment.

Seattle-based Russell provides pension consulting, investment management, transition management services and indexes such as the Russell 1000 Global Index. It has more than $259 billion in assets under management, according to its website.

Reuters first reported in January that Milwaukee-based insurer Northwestern Mutual is discussing selling the Russell subsidiary because it has decided it is not a core part of its business.

For CIBC, an acquisition of Russell Investments would boost its asset management business and its global presence. The Toronto-based bank, like many of its Canadian peers, has stated that it plans to actively build scale in its asset management business via acquisitions.

CIBC faced a setback last year after losing out on a long-standing lucrative deal with loyalty-program company Aimia Inc (>> Aimia Inc) and the latest industry data indicates that it has now ceded its spot as Canada's largest credit card issuer to rival Toronto-Dominion Bank (>> Toronto-Dominion Bank), which last year agreed to buy half of CIBC's Aeroplan credit card portfolio.

Alternative asset manager Carlyle Group LP (>> The Carlyle Group LP) considered acquiring Russell Investments earlier this year to expand its product offerings, rather than as a buyout fund investment, people familiar with the matter said earlier this year, but the Washington, D.C.-based firm is no longer in the auction.

A Carlyle spokesman did not immediately respond to a request for comment.

(Reporting by Greg Roumeliotis and Mike Stone in New York and Euan Rocha in Toronto; Editing by Bernard Orr)

By Greg Roumeliotis, Mike Stone and Euan Rocha