A binary option is a type of options contract in which the payout depends entirely on the outcome of a yes/no proposition and typically relates to whether the price of a particular asset will rise above or fall below a specified amount.   Once the option is acquired, there is no further decision for the holder to make regarding the exercise of the binary option because binary options exercise automatically.  Unlike other types of options, a binary option does not give the holder the right to buy or sell the specified asset.  When the binary option expires, the option holder receives either a pre-determined amount of cash or nothing at all. 

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Investor Alert: Binary Options and Fraud