15. JAYSHREE ULLAL

$1.9 billion

SOURCE: Computer networking

AGE: 61 • RESIDENCE: Saratoga, CA

SELF-MADE SCORE: 6

Ullal spent 15 years at Cisco before taking over as CEO of cloud networking company Arista in 2008. She took Arista public in 2014; shares are up nearly 700% since.

She also sits on the board of cloud computing firm Snowflake, which went public in the fall of 2020.