Investors completed their buy-out of Vons.

The supermarkets are part of Household Merchandising, a unit of Household International that also includes three other retailing operations. Under terms of the deal, Household International received $570 million, the projected book value of the subsidiary at the Dec. 31 closing date; $125 million in notes, and an $8.4-million equity stake in the acquiring corporation. The investors also assumed responsibility for about $75 million in maturing Household notes. Donald C. Clark, chairman of Household, said the recent meat cutters strike at Vons held down fourth-quarter earnings.