Jeff Muhlenkamp

Biography

Jeff Muhlenkamp graduated in electrical engineering from the US Military Academy and served 20 years in the US Army, retiring as a lieutenant colonel in 2008. That year he joined Muhlenkamp & Company, founded by Ron Muhlenkamp in 1977, as an investment analyst; he became co-manager of the Muhlenkamp Fund in 2013 and lead portfolio manager by 2019. He holds the CFA designation.

In their own words

Muhlenkamp & Company’s largest US holdings

From the Q2 2026 13F, worth $345m in total. See every holding and change

1. Rush EnterprisesRUSHA7.2%
2. NewmontNEM6.3%
3. Agnico Eagle MinesAEM6.2%
4. EQTEQT6.2%
5. MckessonMCK6.0%
6. Berkshire HathawayBRK.B5.6%
7. Microchip TechnologyMCHP5.4%
8. AppleAAPL5.2%
9. United RentalsURI5.1%
10. Royal GoldRGLD5.1%