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2. Binary option - Wikipedia

   en.wikipedia.org/wiki/Binary_option

   In the Black–Scholes model, the price of the option can be found by the formulas below. [27] In fact, the Black–Scholes formula for the price of a vanilla call option (or put option) can be interpreted by decomposing a call option into an asset-or-nothing call option minus a cash-or-nothing call option, and similarly for a put – the binary options are easier to analyze, and correspond to ...

3. Open outcry - Wikipedia

   en.wikipedia.org/wiki/Open_outcry

   It involves shouting and the use of hand signals to transfer information primarily about buy and sell orders. [2] The part of the trading floor where this takes place is called a pit. In an open outcry auction, bids and offers must be made out in the open market, giving all participants a chance to compete for the order with the best price.

4. Nadex - Wikipedia

   en.wikipedia.org/wiki/Nadex

   Nadex (Northern American Derivatives Exchange), formerly known as HedgeStreet, is a US-based retail-focused online binary options exchange. It offers retail trading of binary options and spreads on the most heavily traded forex , commodities and stock indices markets.

5. Prediction market - Wikipedia

   en.wikipedia.org/wiki/Prediction_market

   The most common form of a prediction market is a binary option market, which will expire at the price of 0 or 100%. Prediction markets can be thought of as belonging to the more general concept of crowdsourcing which is specially designed to aggregate information on particular topics of interest.

6. Forex signal - Wikipedia

   en.wikipedia.org/wiki/Forex_signal

   The majority of signal providers focus on supplying signals based on technical analysis and a minority work on fundamental analysis or price action. Technical analysis, such as ichimoku and candlestick charting , show both short and long term price trends giving the signal provider flexibility in supplying a range of trade options.

7. Hand signaling (open outcry) - Wikipedia

   en.wikipedia.org/wiki/Hand_signaling_(open_outcry)

   Counting starts from six when the hand is held in this way. Numbers gestured from the forehead are blocks of ten; blocks of hundreds and thousands can be indicated by repeatedly touching the forehead with a closed fist. The signals can otherwise be used to indicate months, specific trade option combinations or additional market information. [3]