have a stake in (something)
1. To be financially involved in a business or similar endeavor. I don't know why she's suddenly so interested in our company—it's not like she has a stake in it or anything.
2. To have a strong interest in something. Of course I have a stake in your welfare—I am your mother, after all!
have a stake in something
1. If you have a stake in something, you take part in it or it affects you and you care about what happens to it. These meetings are supposed to make everyone feel they have a stake in the decision-making. Your nearest and dearest have a stake in your baby.
2. If you have a stake in something, you own part of it. The partners who have a stake in the company also work with clients.