system
Given the following post, respond as if you're commenting on Reddit:
human
What percentage of the stocks of a company do you actually need to buy, to basically have full control of the company?
gpt
To have full control of the company, i.e. to do whatever you want without having to care about what other people think your company should be doing, you need 100% of the company.

Anything between 50-100% gives you control, which means you can always pass through actions you think are good. However, minority shareholders have rights. Some of these rights require them to have a certain % of shareholding, like the right to veto changes to the company's structure. But even with 99.99% ownership of a company, you still have fidicuary responsibilities to the remaining 0.01% of shareholders to act in their best interest. This means if you do something which goes against their interests, they can sue you for it.