Brennan Investment Group is an investment management firm founded in 1974. Over the past decades, it has established itself as a leading investment group with a focus on value investing and long-term capital appreciation.
In this article, we will provide an overview of Brennan Investment Group’s investment strategies and philosophies. Key topics to be covered include its value investing approach, portfolio concentration, long-term perspective, as well as some of its representative investments over the years. There will also be discussions around the investment performance and the leadership behind the Brennan Investment Group.

Core value investing principles of Brennan Investment Group
As a value-focused investment group, Brennan Investment Group adheres closely to the value investing principles set out by renowned investors like Benjamin Graham and Warren Buffett. Specifically, it seeks to identify companies that are trading significantly below their intrinsic values.
To estimate a company’s intrinsic value, Brennan Investment Group conducts in-depth analysis on its financial statements, industry dynamics, competitive advantages, management quality, etc. Only companies with durable competitive strengths, shareholder-friendly management, and favorable reinvestment opportunities will be considered for investment.
In summary, Brennan Investment Group embraces a classic value investing philosophy – identifying and investing in good companies at great prices for long-term capital growth.
High portfolio concentration with a long-term perspective
Brennan Investment Group is known for its high portfolio concentration, with its top 5 holdings often accounting for over 50% of its total portfolio value. This level of concentration requires strong conviction in its investment decisions.
Behind this conviction is Brennan Investment Group’s long-term investment horizon. Most of its stock holdings are kept for over 5 years, some even over decades. It attributes the long-term perspective to better compounding effects.
Additionally, Brennan Investment Group does not attempt any market timing activities. It remains fully invested throughout all kinds of market environments, believing that consistently adhering to its value investing approach will generate favorable returns over long periods.
Some representative investments over the years
Over its history, Brennan Investment Group has made many high-profile investments in stocks like Coca-Cola (KO), Wells Fargo (WFC), and Markel Corporation (MKL), some of which have turned into multi-baggers over long holding periods.
Its early investment in Coca-Cola has appreciated over 100 times since the initial purchase in the 1970s. The over 40-year holding period exemplifies Brennan Investment Group’s long-term investment mentality.
In addition, it has recently built sizable positions in companies like Alphabet, CVS Health Corporation and Chewy, which demonstrate its ability to identify quality businesses even in today’s market environment.
Strong long-term investment performance
By adhering closely to its value investing principles over decades, Brennan Investment Group has achieved remarkable investment results for its clients.
According to its website, Brennan Investment Group’s flagship investments program Global Value has delivered annualized returns of 16% over 45 years. Over the same period, the S&P 500 only managed annualized returns of around 11%.
The over 5% outperformance demonstrates the strength of its value investing strategies. Additionally, Global Value only had 3 down years over the 45-year period, showcasing outstanding resilience across different market cycles.
Experienced leadership behind its success
The long-term success of Brennan Investment Group relies greatly on its founder and chairman William Brennan.
William, together with the current portfolio managers, have shepherded Global Value and preserved its value investing culture over multiple decades. Their shared investment philosophies and stability in leadership have enabled consistent adherence to the long-term, high-conviction value investing approach.
As William recently entered his 70s, the Brennan Investment Group has also put in place proper leadership transition plans to ensure the continued success beyond the founder’s generation.
In summary, Brennan Investment Group is a value-focused investment management firm with remarkable long-term investment results. Its success lies in the long-term perspective, portfolio concentration, and experienced leadership behind an enduring value investing culture.