Who is theo A. Kolokotrones

Theo A. Kolokotrones is a seasoned investment professional with an extensive career in portfolio management and a strong track record in the financial industry. Here's a detailed overview of his career and contributions:

1. **Current Position**:
- Theo Kolokotrones serves as the Chairman, Director, and Portfolio Manager at PRIMECAP Management Co.
- He is also the Co-Founder of PRIMECAP Management Company, which he established in September 1983.
2. **Experience and Education**:
- Kolokotrones has over 49 years of experience in the investment field, having started his portfolio management responsibilities in 1979.
- He holds a Bachelor's degree from the University of Chicago and a Master's degree from the Harvard Graduate School of Business Administration.
3. **Career History**:
- Prior to joining PRIMECAP, Kolokotrones spent six years at Capital Research Company, most recently as Senior Vice President.
- From 1970 to 1977, he was a Vice President and Senior Financial Analyst at Smith Barney, Harris Upham and Company in New York.
4. **Awards and Recognition**:
- Theo Kolokotrones has received accolades for his investing excellence, including being named to the Morningstar Hall of Fame and recognized as a Fund Manager of the Year.
5. **Contributions to the Industry**:
- Kolokotrones is known for his work in managing US-focused equity portfolios for institutions and mutual funds, including those under The Vanguard Group.
- PRIMECAP, which he helped found, manages assets totaling $134 billion as of July 2024, with a significant portion invested in Vanguard funds.

In summary, Theo A. Kolokotrones is a distinguished figure in the investment management industry, with a rich career spanning several decades. His expertise and leadership in portfolio management have been instrumental in the success of PRIMECAP Management Company.