Maybe Vanguard Funds' John Bogle knew he was about to ignite one of the hottest investing crazes of all time when, on Aug. 31, 1976, he launched the world's first index mutual funds.
Then again, maybe he didn't.
But what's clear is the decades-old "how to invest your own money" philosophy has never been more popular.
In fact, it's so hot it may be the reason stock markets are hitting serial new highs... and why volatility, as measured by the VIX, is at historic lows. Genius!
The thing is, it's also likely going to cause the next insane spike in volatility and serve as the impetus for the next market crash. Insanity!