A Century of Influence: the Complete Chronological Timeline of the C. Cabot Family Milestones

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In 1924, Boston was the epicenter of quiet, conservative wealth. Trust managers managed money for widows and orphans, keeping fortunes locked in low-yield municipal paper and railroad bonds. Paul Codman Cabot, alongside partners Richard Paine and Richard Saltonstall, saw a structural flaw in that orthodoxy. They pooled $100,000 to launch State Street Investment Corporation.

The move was radical. Instead of locking capital inside closed-end trusts that traded at volatile discounts or premiums to their underlying assets, Cabot’s vehicle allowed investors to redeem their shares at net asset value. That single structural rule established the framework for the modern open-end mutual fund.

Cabot managed the portfolio with unsentimental discipline. While Wall Street euphoric margin traders drove valuations into fantasy territory in 1928, State Street built cash positions and trimmed vulnerable equity exposures. When the market collapsed in October 1929, State Street survived relatively intact. Cabot’s reputation as an unshakeable fiduciary cemented Boston as the asset management capital of the United States, creating a blueprint that rivals like Massachusetts Investors Trust and later Fidelity expanded into global empires.