Apparently Larry Fink runs the American Investment Firm known as BlackRock. Why do you ask? Are you going to write him a letter? In that case according to the article there's some relevant information about where to send it

"In 2004, they bought Finch Farm in North Salem, New York from the actor Stanley Tucci for $3.7 million and have since bought seven more parcels of land there, including one from Maurice Sendak and 27 acres from the town's deputy supervisor Peter Kamenstein in 2019 for $5.4 million.[47] They also have an apartment on the Upper East Side of Manhattan and a house in Aspen, Colorado.[3]"

If you're worried about him being on the opposite side of political issues then don't you worry because Larry "Fink is a lifelong supporter of the Democratic Party."

I hope that helps you with your message! Good Luck.