Cryptocurrency is a digital representation of value that functions as a medium of exchange, a unit of account, or a store of value, but it does not have legal tender status. Cryptocurrencies are sometimes exchanged for U.S. dollars or other currencies around the world, but they are not currently backed nor supported by any government or central bank. Their value is completely derived by market forces of supply and demand, and they are more volatile than traditional currencies. Trading in cryptocurrencies comes with significant risks, including volatile market price swings or flash crashes, market manipulation, and cybersecurity risks. In addition, cryptocurrency markets and exchanges are not regulated with the same controls or customer protections available in equity, option, futures, or foreign exchange investing. Cryptocurrency trading requires knowledge of cryptocurrency markets. In attempting to profit through cryptocurrency trading, you must compete with traders worldwide. You should have appropriate knowledge and experience before engaging in substantial cryptocurrency trading. Cryptocurrency trading may not generally be appropriate, particularly with funds drawn from retirement savings, student loans, mortgages, emergency funds, or funds set aside for other purposes. Cryptocurrency trading can lead to large and immediate financial losses. Under certain market conditions, you may find it difficult or impossible to liquidate a position quickly at a reasonable price. This can occur, for example, when the market for a particular cryptocurrency suddenly drops, or if trading is halted due to recent news events, unusual trading activity, or changes in the underlying cryptocurrency system. Several federal agencies have also published advisory documents surrounding the risks of virtual currency. For more information see, the CFPB’s Consumer Advisory, the CFTC’s Customer Advisory, the SEC’s Investor Alert, and FINRA’s Investor Alert. Momentum investing usually involves a strict set of rules based on technical indicators that dictate market entry and exit points for particular securities. Momentum investors sometimes use two longer-term moving averages, one a bit shorter than the other, for trading signals. Some use 50-day and 200-day moving averages, for example. The 50-day crossing above the 200-day creates a buy signal. A 50-day crossing back below the 200-day creates a sell signal. A few momentum investors prefer to use even longer-term moving averages for signaling purposes.