Billionaire Profile
Milane Frantz
Global Rank
#333

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Milane Frantz

CEO, Pipelines
UNITED STATES
Real-Time Net Worth
$10.193B
Estimated based on Pipelines stock value as of April 20, 2026
0% (24h)
Age
56
Source
Pipelines
Industry
Energy
Citizenship
UNITED STATES

Biography

Milane Frantz is an American heiress and investor. Born in 1970, she inherited a significant portion of her father Dan Duncan's wealth, primarily derived from his energy pipeline company, Enterprise Products Partners. With a current net worth of $10.2 billion, Frantz has focused on managing her inherited wealth and engaging in philanthropic endeavors. She resides in Houston, Texas, and is known for her contributions to charitable organizations.

Fact Checked
Verified by Editorial Team
Live Data
Updated 4/20/2026

Wealth Over Time

In-Depth Profile

Early Life

Milane Diane Frantz, née Duncan, was born in 1970 to Barbara Ann and Dan Duncan. Her father, Dan Duncan, founded Enterprise Products Partners, a significant player in the energy sector. Milane grew up in Houston, Texas, and comes from a wealthy family.

Rise to Success

Milane Frantz's wealth originates from her inheritance. Upon her father's death in 2010, she and her siblings inherited a substantial stake in Enterprise Products Partners. Due to a temporary estate tax repeal, the Duncan children became the first American billionaires to avoid estate tax.

Key Business Strategies

Frantz does not hold any executive positions. Instead, she focuses on managing her inherited wealth and investments. Her wealth is primarily tied to Enterprise Products Partners, a major energy infrastructure company.

Philanthropy

Milane Frantz is known for her philanthropic efforts, particularly in education and healthcare. She serves on the board of Houston's Hermann Park Conservancy and is a director of the Duncan Family Foundation.

Career Milestones

2010

Inherited Wealth

Inherited a significant stake in Enterprise Products Partners after her father's death.

Philanthropy & Social Impact

Philanthropy

Duncan Family Foundation

Unknown

Serves as director

Philanthropy

Hermann Park Conservancy

Unknown

Board member in Houston