What percentage of shares must a person own in a listed company to control it?

There are no exact rules for this. As long as you own more shares than any other party, you have control over it. In other words, no one else can compare with you, and you are the boss. The party I refer to here is not necessarily a person or an institution, but also a group of people. For example, several brothers and sisters of others have the largest share price, so they have control. So to put it simply, if you own 5 1% of the shares, you must have control. But sometimes, as long as you own 10% of the shares, you also have control, which is the previous reason. I wish you a successful investment.