Your 'Diversified' Portfolio Might Be a Magnificent Seven Fan Club in Disguise
Millions of American investors believe they hold diversified portfolios — but a closer look at the underlying holdings of popular index funds and target-date strategies reveals an uncomfortable truth: a handful of mega-cap technology companies now dominate their allocations in ways that would have seemed extreme even a decade ago. Understanding how this concentration developed, what risks it introduces, and how to audit and correct it is one of the most pressing portfolio management challenges o