Duncan MacMillan

Duncan MacMillan (#2246)

Global Rank #2246

Country Rank #747

Country United States

Duncan MacMillan is listed among the world billionaires tracked by Iconic Billionaires.

$ 2 B
Bloomberg LP
United States
M
88 Years

Snapshot

Quick Facts

Global Rank #2,246

Country Rank #747

Net Worth $1.8B

Previous Worth $1.8B

Worth Change +$0.0B

Country United States

Industry Bloomberg LP

Age 88 Years

Gender M

Worth As Of May 4, 2026

Last Refreshed 31 Jul 2026, 12:00 AM

Residence Princeton, New Jersey

World Billionaires List United States Billionaires Bloomberg LP

Profile Data

Personal Stats

Age 88

Source Of Wealth Bloomberg LP, Self Made

Residence Princeton, New Jersey

Citizenship United States

Marital Status Married

Children 2

Net Worth Change +$0.0B +0.0% from previous worth

Previous Net Worth $1.8B

Current Net Worth $1.8B

Worth as of May 4, 2026

About Me

Duncan MacMillan cofounded financial data and media company Bloomberg LP in 1981 with Mike Bloomberg, Thomas Secunda and Charles Zegar. MacMillan left a job at investment bank Salomon Brothers to help Bloomberg with what was then called Innovative Market Systems. He is credited with designing many of Bloomberg LP's computer systems. Bloomberg LP has estimated revenues of nearly $15 billion.

Insights

Did You Know?

An active philanthropist, MacMillan has signed the Giving Pledge, a promise to give at least half of his fortune to charitable causes.

MacMillan served four years in the Marine Corps after graduating from high school. He graduated from Rutgers University in 1966.

Wealth Growth

Net Worth Growth Over Time

Tracking Duncan MacMillan's net worth journey over the years, highlighting key growth phases and financial milestones.

Worth Trend Net Worth Growth

Period Change Worth Movement

Current Net Worth: $1.8B (May 4, 2026)