One place sunlight doesn't shine is a company named Ensign Peak Advisors in Salt Lake City, Utah. According to a whistleblower complaint first reported by the Washington Post, Ensign manages an astonishing $100 billion in assets while paying no taxes.
The big picture: Ensign achieves its tax-exempt status by dint of being an "integrated auxiliary" of the Mormon church. It allegedly receives approximately $1 billion per year from church members' tithes, while disbursing nothing to charitable causes. Between new contributions and investment returns, it has managed to grow to its current gargantuan size.