By Ruth Bender 

PARIS--A U.S. activist fund has been seeking to challenge Vivendi SA's strategy, the French company said Monday, highlighting a growing malaise among minority shareholders over where group chairman Vincent Bolloré is driving the media conglomerate.

Vivendi said it received a letter from U.S. hedge fund P Schoenfeld Asset Management in December requesting the company sell Universal Music Group.

Vivendi said it dismissed the request and continues to oppose the idea of parting with its music business.

"The management board opposes the dismantling of Vivendi and reaffirms its desire to build a Paris-based global industrial content and media group," Vivendi said in a news release.

The comments come after the Financial Times reported late Sunday that PSAM was preparing resolutions for Vivendi's annual general meeting in April, urging the company to take actions to improve its share price and pay a higher dividend.

Since asking Vivendi to sell Universal Music--one of the group's two remaining assets--PSAM has made several other requests aimed at raising shareholder returns, according to a person familiar with the matter.

In its statement, Vivendi said the group would examine any new requests from PSMA, which owns less than 1% of the group's capital.

A spokesman for PSAM wasn't immediately available to comment.

The pressure on Vivendi's chairman comes as the company stands at a strategic crossroads. Mr. Bolloré is the crucial player in defining Vivendi's future, The once-sprawling conglomerate has in recent years sold off many assets, slimming down to two media businesses: California-based Universal Music Group and French pay-television provider Canal Plus Group.

Mr. Bolloré, who owns 8.2% of the Vivendi's capital, has said little about how he plans to develop the company and how he intends to use the company's rapidly growing cash pile, sparking some frustration among minority shareholders.

Vivendi said in February that it will plow EUR5.7 billion ($6.17 billion) into dividends and share buybacks by mid-2017.

Some analysts have said they expected returns to be higher after Vivendi agreed to sell its remaining stake in French telecom group Numericable-SFR and as Vivendi management had stated that acquisitions were possible--although only under "strict financial discipline."

Vivendi said Monday that its planned shareholder returns are "well balanced."

Vivendi shareholders have until the end of Monday to submit any resolutions for the group's annual meeting on April 17, according to a proxy filing.

Write to Ruth Bender at Ruth.Bender@wsj.com

Access Investor Kit for Vivendi SA

Visit http://www.companyspotlight.com/partner?cp_code=P479&isin=FR0000127771

Access Investor Kit for Vivendi SA

Visit http://www.companyspotlight.com/partner?cp_code=P479&isin=US92852T2015

Subscribe to WSJ: http://online.wsj.com?mod=djnwires