SOPA Images/Getty Images Ethereum has been a tear recently, rising more than 63% over the past month. Technical analyst Julius de Kempenaer told us why he thought it would surge to $3,000. He also broke down how he traded cryptocurrencies based on price momentum and relative strength. The price action of bitcoin and other cryptocurrencies tends to be highly volatile. While many say the digital-currency space has long-term tailwinds and a strong fundamental investment case, its up-and-down nature in the short term can be difficult for some investors to stomach. But for near-term-minded investors, these price swings can be an opportunity to make money. Using technical analysis, traders can pick up on momentum patterns that tell them when the best times to buy and sell are.