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Elm’s Coin Flip Challenge

How would you wager your savings on a coin toss if you knew there was a 60% chance of the coin landing on heads? Play our Coin Flip Challenge for as long as you like, and see how you do. You can read about how others have done, playing with real money, and a discussion of optimal betting strategies here.

COIN FLIP CHALLENGE →

Elm’s Crystal Ball Trading Challenge

If you had the front page of the Wall Street Journal one day in advance, would you be able to capitalize on it? See how good you are at figuring out whether stocks and bonds will go up or down, and sizing your trades appropriately.

CRYSTAL BALL TRADING CHALLENGE →