The Russian oil company Lukoil, which is funded by private capital, is negotiating to buy a 30% stake in the Spanish oil company Repsol YPF. Repsol YPF is basically owned by Sacyr Vallehermoso, the major shareholder, La Caixa with 12%, Pemex with 4.9% and Axa with 4.2%. Lukoil would effectively be buying a 20% share put up for sale by …