[2] The firm specialized in value investing influenced by Benjamin Graham, and is also known for their association with Warren Buffett during the early phase of his career.
This niche allowed him to buy stocks at a significant discount to estimated book value due to the limited options for sellers.
[4] Tweedy's focus on buying shares at a discount caught the attention of Benjamin Graham, the father of value investing who was in the 1920s and '30s formalizing his theories.
They still focused on being a market maker or broker-dealer for smaller companies at this point, and became known as "buyers of last resort" for stocks neglected by larger trading firms.
Buffett singled out Tweedy, Browne as superior investors in his 1984 article "The Superinvestors of Graham-and-Doddsville," noting they outperformed both the Dow Jones Industrial Average and S&P 500 by substantial margins from 1966 to 1982.