Investment titans are making massive billion-dollar bets that the stock market is approaching an imminent crash, but perhaps most shockingly of all … is why.

Multibillionaire Carl Icahn, for example, recently increased his short positions by 600% … betting as much as $4,321,000,000 that the stock market will plummet sharply and suddenly!

George Soros — who is considered to be the most successful hedge fund operator in history for timing market crashes — is getting in on the action, too. He just made a $2.2 billion bet that the market would collapse.

Even famed investor Jim Rogers went on record saying: “A $68 trillion ‘Biblical’ collapse is poised to wipe out millions of Americans.”

Mysteriously, just about every major financial whale is taking specific steps against the market … all at the same time.

In fact, we haven’t seen this many concentrated bets on an immediate crash since 2008 when the stock market collapsed by 58%.

The glaring question is … what’s coming that has them so sure?

The best answer we found is linked back to a little-known, controversial calendar.

Devised by a group of Wall Street analysts in 1905 and kept closely by insiders, this little-known calendar has accurately predicted every boom and bust for the last 111 years, and what it says for the rest of 2016 is alarming.

JL Yastine — an Emmy-nominated investigative reporter — recently came forward with this calendar, revealing it to the public for the first time ever in a new video exposé.

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Yastine says he was handed a copy of the calendar a decade ago during a private interview, and that it single-handedly forewarned him of the 2008 crisis months in advance.

“The calendar shows how the market moves in periodic patterns,” Yastine explain. “It simply labels each year with a corresponding letter. For example, 2008 was a ‘K’ year, meaning ‘low stock prices.’ Hence, I was forewarned of the crash.”

In the video, one can see that 2016 ends as a “D” year … once again meaning “low stock prices.”

With this kind of information at hand, it’s easy to see why those in the know are making big bets that a stock market crash is imminent.

But what’s even more exciting for investors is what 2017 and 2018 hold. Yastine believes that if one has the help of his updated and advanced version of the calendar, they could add an extra $1.2 million to their retirement.

Click here to see the calendar in JL’s new video exposé.