Finance and technology usually spring to mind when thinking of the world’s most lucrative industries.
And that’s for good reason. They have been the source of wealth for nearly half of America’s 400 richest people, as ranked and categorized by Forbes.
However, billion-dollar fortunes have been made in other sectors, too, ranging from trucking to pest control.
Business Insider has compiled data from the 2026 Forbes 400 list , which is an estimated snapshot of the 400 richest people in America as of September 4.
Forbes estimated each member’s net worth using a variety of sources, including interviews, asset valuations, and deductions for debt…
