# PRIMECAP Management Company

PRIMECAP Management Company is a Private Equity based in Pasadena, United States.

## Overview

- **Organization type:** Private Equity
- **Headquarters:** Pasadena, United States
- **Region:** North America
- **Address:** Pasadena, CA, United States
- **Founded:** 1983
- **Assets under management:** Undisclosed
- **Website:** www.primecap.com
- **LinkedIn:** https://www.linkedin.com/company/primecap-management-company

## Regulatory record

- **CRD number:** 105516
- **SEC file number:** 801-19765
- **Registration status:** Registered
- **Reports private funds:** No
- **IAPD record:** https://adviserinfo.sec.gov/firm/summary/105516

## About

PRIMECAP Management Company was founded in 1983 in Pasadena, CA, as an independent investment management company. It manages US-focused equity portfolios for a limited number of institutions and mutual funds. Its objective is to provide superior long-term equity investment results based on individual decision-making, commitment to fundamental research, a long-term investment horizon, and focus on value.

## People

- Theo A. Kolokotrones — Chairman Emeritus, Director, and Portfolio Manager
- Joel P. Fried — Co-Chief Executive Officer, Chairman, Director, and Portfolio Manager
- Alfred W. Mordecai — Co-Chief Executive Officer, President, Director, and Portfolio Manager
- M. Mohsin Ansari — Vice Chairman, Director, and Portfolio Manager
- James Marchetti — Executive Vice President, Director, and Portfolio Manager

## Questions

### Who actually makes the investment decisions at PRIMECAP?

The firm runs a multi-counselor model where each of the five named portfolio managers — currently Theo Kolokotrones, Joel Fried, Alfred Mordecai, Mohsin Ansari, and James Marchetti — has complete autonomy over a dedicated sleeve of each portfolio. There is no central investment committee overriding individual stock picks. This structure means a holding in, for example, the PRIMECAP Odyssey Stock Fund can reflect the independent work of any one of the five managers.

### How is PRIMECAP structured — is it a mutual fund company, a private equity firm, or something else?

PRIMECAP is an independent investment management company operating as a boutique asset manager. It runs a limited number of institutionally focused US equity mutual funds under the Odyssey Funds umbrella and manages separate accounts for a small institutional client base. It is not a private equity firm, despite being categorized as one in some databases.

### What investment philosophy drives PRIMECAP’s portfolio?

PRIMECAP’s philosophy rests on four explicit principles: commitment to fundamental research, a long-term investment horizon, emphasis on individual decision-making, and focus on value — buying companies at a discount to their assessed intrinsic worth. The firm describes its process as bottom-up selection, investing with a multi-year holding period and no requirement for consensus across the management team.

### Where is PRIMECAP headquartered and does it have any other offices?

PRIMECAP is headquartered in Pasadena, California, where it has been based since its founding in 1983. Its fund administration address is in Milwaukee, Wisconsin, through its relationship with U.S. Bancorp Fund Services, but no other investment offices are disclosed.

### Who founded PRIMECAP, and what was his background?

Theo A. Kolokotrones co-founded the firm in September 1983. Before launching PRIMECAP, he spent six years at Capital Research Company — part of the Capital Group — most recently as a senior vice president. His earlier experience includes vice president and senior financial analyst roles at Smith Barney, Harris Upham and Company.

### Who runs PRIMECAP today?

Joel P. Fried and Alfred W. Mordecai share the title of Co-Chief Executive Officer and both serve as portfolio managers. Theo Kolokotrones remains active as Chairman Emeritus and portfolio manager. The full five-person investment team has all been with the firm for at least 18 years.

## Related profiles

- [Prime Capital Investment Advisors](https://altss.com/profile/prime-capital-investment-advisors)
- [Primefund](https://altss.com/profile/primefund)

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Last updated: 2026-08-11T15:07:49.000Z

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