New York - US multi-billionare Kirk Kerkorian's investment compnay Tracinda Corp. disclosed Thursday that it has boosted its stake in the carmaker Ford to 6.49 per cent.

Tracinda informed the Securities and Exchange Commission of the development which boosts its holding from the previous 5 per cent in the Detroit, Michigan-based car giant.

The development at the second-biggest US carmaker comes a few days after Tracinda officials had met with Ford executives, Chairman William Clay Ford Jr. and Chief Executive Officer Alan Mulally, to discuss Kerkorian's bid to increase his stake in the carmaker.

Further details were not immediately available Thursday.

Kerkorian, 91, is on the Top 10 list of the Forbes magazine's richest Americans. In the past he has held major stakes in DaimlerChrysler and General Motors. (dpa)