LVMH's Arnault to buy stake in Lagardere holding company

PARIS (Reuters) - Bernard Arnault, the billionaire behind luxury fashion group LVMH , has agreed to buy a stake in the holding company of fellow French billionaire Arnaud Lagardere, according to the holding companies of the two men. Lagardere's eponymous publishing and media group, locked in a stand-off with activist investor Amber Capital over the past four years, has been beefing up its defences by attracting allies as investors, including French media magnate Vincent Bollore and his Vivendi ..