A grand jury is investigating a former tech mogul funding leftist activism throughout the U.S., a source familiar with the matter said.

A federal grand jury in SDNY is investigating Neville Roy Singham over $278 million routed through shell companies and donor-advised funds since 2017.

The Department of Justice has launched a federal grand jury investigation into the alleged financial irregularities by Neville Roy Singham, the China-based American businessman.…