Credit Agricole's Q2 results beat estimates on insurance, consumer finance

* Posts record Q2 earnings, sales

* Agrees to acquire wealth manager Degroof Petercam

* Top investor to buy 1 bln euros worth of shares

PARIS, Aug 4 (Reuters) - Credit Agricole SA, France's second-biggest listed bank, posted better-than-expected quarterly earnings on Friday, driven by a strong performance of its insurance and consumer finance divisions.

The listed entity of Credit Agricole Group, controlled by 39 French mutual banks, also announced it had agreed to buy a majority stake in Belgian wealth manager Degroof Petercam for an undisclosed amount in a move that would double the scope of its Indosuez division.

Credit Agricole's second-quarter net income group share jumped by 25% from a year earlier to 2.04 billion euros, well above the 1.39 billion-euro average of analyst estimates compiled by the company.

Quarterly sales rose by 19% to 6.68 billion euros, also beating the consensus of 5.9 billion euros for the three-months period ending in June.

The cost of risk - money set aside for failing loans - more than doubled to 534 million euros, because of "a market significant case" and a higher risk on retail banking and consumer credit.

Both sales and earnings reached record highs in the second quarter, the bank said, driven notably by the insurance business and its so-called special financial services (SFS) unit.

The latter comprises the lender's consumer finance activities, whose sales were notably boosted by the addition of a joint venture with carmaker Stellantis dedicated to car leasing.

In a call with reporters, Xavier Musca, the head of Credit Agricole's investment bank, said the lender aimed to own 80% of Degroof Petercam following the acquisition of a number of family-held stakes.

Flemish family Cigrang would retain 20% under the acquisition plan, Musca said, adding that Degroof Petercam had about 35 billion euros under management, and about 30,000 clients.

Separately, Credit Agricole said SAS Rue La Boetie, the investment vehicle of Credit Agricole Group's 39 mutual banks, planned to further invest 1 billion euros in the listed entity, thus increasing its stake from its current 60.2% stake. (Reporting by Mathieu Rosemain Editing by Ingrid Melander, Augustin Turpin)