These Massachusetts billionaires made Forbes’ 2026 list of the 400 richest Americans

Key Points:

• The threshold to make Forbes’ list of America’s 400 richest people has risen to $4.4 billion, up $600 million from last year and $2.7 billion from a decade ago, driven by the AI and data center boom and a strong U.S. stock market.
• Elon Musk leads the list with a net worth of $908 billion, nearly doubling after SpaceX’s IPO, followed by Jeff Bezos at $378 billion and Larry Page at $278 billion; the combined wealth of the 400 richest Americans reached $8 trillion.
• Massachusetts is represented by notable billionaires including Abigail Johnson, CEO of Fidelity Investments, with $41.6 billion, and her siblings Edward Johnson IV and Elizabeth Johnson, all descendants of Fidelity’s founder.
• Other prominent Massachusetts billionaires include Robert Kraft ($15.2 billion), owner of the New England Patriots; Jim Davis and family ($6.7 billion) of New Balance; Robert Hale Jr. ($6.5 billion), founder of Granite Telecommunications; and Amos Hostetter Jr. ($4.5 billion), co-founder of Continental Cablevision.
• Phillip T. Ragon and Alan Trefler, founders of InterSystems and Pegasystems respectively, fell off the list this year, highlighting the increasing difficulty of maintaining billionaire status amid rising wealth thresholds.