Founding Vanguard and the first retail index fund
The man who made it possible to stop trying. Bogle's index fund was ridiculed at launch and has since taken more money from active management than any argument ever did.
Bogle founded Vanguard in 1975 and launched the first index mutual fund available to ordinary investors the following year. It raised a fraction of its target and the industry called it un-American — a fund that guaranteed you would never beat the market. It is now among the largest funds in the world.
His argument was never that markets are perfectly efficient. It was arithmetic: all investors together own the market, so the average actively managed dollar must earn the market return before costs and less than it after. Fees, turnover and taxes are the difference, and they compound in the wrong direction for decades.
The structural decision mattered as much as the idea. Vanguard is owned by its own funds, and therefore by its investors, so lowering fees does not take money from a parent company. Bogle removed the incentive to overcharge rather than relying on anyone's restraint — which is why the model held after he left.
Where it fails: indexing guarantees the market return including every drawdown, and it says nothing about whether you can hold through one. It is also self-limiting in principle — if nobody analysed anything, prices would stop being informative — though that point is nowhere near binding today.
Biographical reference only. Nothing here is investment advice, and no affiliation with or endorsement by the people profiled is implied.