as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
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where to categorize crypto-currencies
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forex. i will employ my skill for "suspension of disbelief" and answer with no visceral reaction to bitcoin itself. the euro is not an 'investment.' it's a currency. people trade currencies in order to capture relative movements between pairs of currencies. unlike stocks, that have an underlying business and potential for growth (or failure, of course) a currency trade is a zero sum game, two people on opposite sides of a bet.  bitcoin has no underlying asset either, no stock, no commodity. it trades, de facto, like a currency, and for purposes of objective classification, it would be considered a currency, and held similar to any forex position.
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