The announcement of the completed acquisition sent the American carmaker's shares up 8 per cent in pre-market trading.
Kerkorian's Ford purchase has come following failed efforts to buy Chrysler last year. In November 2006 he cut his stake in General Motors from 10 per cent to just over 7 per cent having failed to force the carmaker into an alliance with Renault Nissan.
It also comes after Ford's unexpectedly strong first quarter results announced last week, achieved despite the difficult economic situation in the US.
While there has been no indication that Kerkorian has met with Ford management or its board, Tracinda has indicated its support of the carmaker's current strategy to cut its American capacity and globalise operations.