Under normal circumstances, what minimum level of voting ownership is considered to give the investor control over the investee?

In the absence of any condition + 50% of voting securities will give powers to investors to control over the investee.

Explanation:

The investors have majority of ownership. They can hire the Board of Directors for the investee They can directly control over the operations of the investee Voting shares give the power to approve or reject major decisions and actions such as a merger.