Family-run investment firm near Pittsburgh — founded by Ron Muhlenkamp and now led by his sons.
Life story
Ron Muhlenkamp earned an engineering degree from MIT and an MBA from Harvard Business School (1968), and later became a CFA charterholder. Little is publicly known about his childhood and family.
How they got started
He entered the investment business in 1968, first as a fundamental portfolio analyst at Berkley Dean & Co. in New York, then spending five years as a portfolio analyst at Integon Corporation.
In 1977–1978 he founded Muhlenkamp & Company to manage private accounts for individuals and institutions, and on November 1, 1988 launched the public Muhlenkamp Fund (MUHLX). For many years he wrote a free quarterly letter, "The Muhlenkamp Memorandum", and appeared frequently on TV and radio.
Investment style
The firm describes itself as independent and long-term, focused on value investing and protecting client capital, with the principles of putting clients first and owning the investment process completely.
Reliable public detail on the specifics of the approach (which metrics it uses, how many positions it holds) is limited.
Best decisions
Nearly 50 years of independence
The firm Ron Muhlenkamp founded has stayed independent and family-owned for almost half a century, and the Muhlenkamp Fund has been running since 1988.
Biggest mistakes
Limited public information
We found no reliable public sources detailing the firm's biggest mistakes or failed investments.
Today
According to the firm's website, it is now led by Ron Muhlenkamp's sons: Jeff Muhlenkamp as portfolio manager and Tony Muhlenkamp as president. The Muhlenkamp Fund (MUHLX) is still operating.
What to learn from following the portfolio
- Muhlenkamp is a small family firm — portfolio changes reflect the team now led by Jeff Muhlenkamp, not Ron himself.
- The 13F shows only long US stocks with a 45-day lag; bonds and cash are not visible.
- As a little-known firm, treat its portfolio as a source of ideas rather than a signal, and analyse each stock yourself.
- Halal lens: the portfolio has included financial and energy companies — banks and heavily indebted companies are usually not halal, while industrial and technology names may more often be. Check each position's halal status in the Portfolio tab.
An introduction based on public sources — not investment advice. Spotted an error? Let us know.