What the biggest black company in the us?

As of my last update, the largest Black-owned company in the U.S. is often considered to be Vista Equity Partners, a private equity firm founded by Robert F. Smith. Smith is recognized for his significant contributions to business and philanthropy, particularly in supporting education and social justice initiatives. Other notable Black-owned companies include Johnson Publishing Company and World Wide Technology, but Vista Equity Partners is frequently highlighted for its scale and impact.