10. OPRAH WINFREY

$2.6 billion

SOURCE: Television shows

AGE: 68 • RESIDENCE: Montecito, CA

SELF-MADE SCORE: 10

The former TV talk show host owns just 5% of OWN, the cable channel she started in 2011. She swapped the rest of her stake in 2020 for shares in Discovery, which merged with Warner Media in April. Winfrey invested in both shapewear company Spanx and the maternity services firm Maven Clinic last year.