Do angel investors have a big share of startups that they are funding?

If the founders agree to part with a big share in exchange for the amount of capital invested, the agreed value of the startup, and the desires of both parties.

Don’t misunderstand, angel investing, or taking on seed capital, doesn’t have standards. It’s not a bank loan where you can generally know the terms of what it means, in advance.

You figure out how much money you need invested… you determine what you’re willing to part with for that, relative to what the startup is reasonably worth… and you find people who agree with that or are willing to propose otherwise.