Needham Portfolio Manager John Barr Featured in “Stock Market Maestros”

Top-Ranked Fund Manager Recognized Among Global Investors for Investment Discipline and Execution

NEW YORK--(BUSINESS WIRE)--Needham Asset Management announced today that John Barr, Portfolio Manager of the top-ranked Needham Aggressive Growth Fund (NEAGX/NEAIX), is featured in the book Stock Market Maestros: The Winning Habits, Strategies, and Mindsets of the World’s Best Investors by Lee Freeman-Shor and Clare Flynn Levy.

The book explores what separates great investors from the rest, emphasizing that execution matters more than stock picking alone. Drawing on detailed trade data and analytical insights, the authors highlight investors whose decision-making demonstrates discipline in both winning and losing environments.

To identify the twelve “Maestros” featured in the book, the authors analyzed tens of thousands of funds and active ETFs, narrowing the field to a shortlist of 73 managers based on performance and consistency. Finalists submitted detailed trade data to Essentia Analytics, whose Behavioral Alpha^® Benchmark evaluates decision-making discipline using metrics such as hit rate and payoff ratio.

The chapter titled “From Lumberyard to Wall Street: The Investing Lessons of John Barr,” highlights the development of his “Hidden to Quality Compounder” investment philosophy. His approach emphasizes identifying underappreciated growth companies early, maintaining conviction through volatility, and allowing successful investments to compound over extended periods. The Fund’s disciplined, low-turnover structure reflects this long-term orientation.

“I was delighted to be included in Lee and Clare’s latest work,” said Barr. “Their research reinforces something I’ve believed throughout my career, that durable investment results come not from being right all the time, but from long-term holding of a small number of significantly outperforming investments.”

Stock Market Maestros is available now through Harriman House and major booksellers.

About Needham Asset Management

Needham Asset Management, LLC was founded in 1992 to offer small and mid-cap investment opportunities. Over 30 years later, Needham remains steadfast in its commitment to create wealth for long-term investors with an emphasis on tax-efficient capital appreciation and limited downside participation. Managed by a team of highly knowledgeable and seasoned professionals, Needham follows a disciplined approach to investing, focusing on data-driven, fundamental research to provide growth at a reasonable price.