No. 313United States
Milane Frantz
Pipelines · Houston, Texas
Net worth
$11.3B
Today
+$28M+0.25%Past month
+$239M+2.16%As of Nov 11, 2026, 1:50 PM EST
Milane Duncan Frantz's father, Dan Duncan, founded Houston-based pipeline giant Enterprise Products Partners in 1968 and took it public in 1998. Frantz and her three siblings inherited a stake in the company after their dad died in 2010; only Randa Duncan Williams is involved in the business. Enterprise Products Partners now owns over 50,000 miles of oil pipelines and the largest oil storage facility on the Gulf Coast. A board member of Houston's Hermann Park Conservancy, Frantz also serves as a director of the Duncan Family Foundation.
Net worth over time
+2.16%+$239M over the past month
$12B$11B$11B
Oct 12Nov 11
Principal holdings
2 positions| Company | Industry | Share | Value |
|---|---|---|---|
Enterprise Products Partners L.P. NYSE: EPD | Energy | 57.0% | $6.4B |
Private and other holdings | Energy | 43.0% | $4.9B |