The search for a potential coin to invest is not simple because the market is extremely volatile. This may be coin HOT today but the next day is not sure. However you may consider the Top 5 Altcoin co-investments below to invest in 2018. The following Altcoins will grow in 2018 this includes. Stellar (XLM), Ripple (XRP), Golem (GNT), Verge (XVG). NEO is also very potential.