Steve Ballmer, the former Microsoft chief executive, was worth $164.6 billion on Oct. 19, 2026. He ranked No.
9 in the U.S., with Microsoft listed as the source, according to Stacker in its Ohio billionaires compilation. That figure is a snapshot, not a bank balance. Market moves shift it every day.
Table of Contents
- Where does his fortune come from?
- How stable is the $164 billion figure?
- What built his Microsoft stake?
- What about the Clippers and Intuit Dome?
Where does his fortune come from?
Ballmer is Microsoft's largest individual shareholder. He holds about 319 million shares, roughly 4% of the company, according to TheStreet in its MSFT ownership review.
That concentration means most of his net worth rises and falls with Microsoft's share price. One stock drives almost the entire fortune.
How stable is the $164 billion figure?
Forbes snapshots around the same month show movement. Wealthier Today, citing Forbes, put him at $163.5 billion on Oct. 17, 2026. Wealthier Today listed $159 billion on Oct.
2, still ninth, in its world wealth roundup. Bloomberg's Billionaires Index was lower, about $145 billion in February 2026 for 13th globally. Wikipedia cites Bloomberg for that estimate, showing how date and method change results. Read each headline number as an outside estimate:.
- Note the date; a week can move billions.
- Compare within one source before comparing across sources.
- Expect daily change because listed shares set the value, as FourWeekMBA notes in its Forbes methods analysis.
What built his Microsoft stake?
Ballmer joined Microsoft in 1980. He served as chief executive from 2000 until retiring in February 2014, according to EBSCO's biography.
That is 34 years at the company. Long tenure plus large shareholding explains the scale.
What about the Clippers and Intuit Dome?
Ballmer bought the NBA's Los Angeles Clippers for a then-record $2 billion in August 2014. A Los Angeles judge confirmed the sale from the Sterling family trust, according to FOX Sports via Associated Press.
He later privately funded the 18,300-seat Intuit Dome in Inglewood. Athlon Sports reports the cost at about $2 billion and the opening for the 2024-25 season.