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An option symbol is a code by which options are identified on an options exchange or a futures exchange. ==History== Before 2010 the ticker (trading) symbols for US options typically looked like this: ''IBMAF''. This consisted of a ''root symbol'' ('IBM') + ''month code'' ('A') + ''strike price'' code ('F'). The root symbol is the symbol of the stock on the stock exchange. After this comes the month code, A-L mean January–December calls, M-X mean January–December puts. The strike price code is a letter corresponding with a certain strike price (which letter corresponds with which strike price depends on the stock). On February 12, 2010 the five-character ticker format stopped being used in the US and Canada. The new standard is now fully in place, as in the first few months after February 12 the LEAP roots and additional roots needed to handle large amounts of options for a given issuer were consolidated into a single root ticker for a given underlying symbol. Options Clearing Corporation's Options Symbology Initiative (OSI) mandated an industry-wide change to a new option symbol structure, resulting in option symbols up to 23 characters in length. March 2010 - May 2010 was the symbol consolidation period in which all outgoing option roots will be replaced with the underlying stock symbol.〔http://www.theocc.com/initiatives/symbology/overview.jsp Symbology Initiative Overview〕 On March 18, 2013, CBOE Mini Options became available for trading on a select group of securities (AMZN, AAPL, GOOG, GLD, and SPY). These options represent a deliverable of 10 shares of an underlying security, whereas standard equity options represent a deliverable of 100 shares.〔http://www.cboe.com/micro/mini/default.aspx〕 CBOE appended a "7" to the end of the security symbol to represent the mini option contracts. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Option symbol」の詳細全文を読む スポンサード リンク
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