A look at the biggest gainers on February 28 NEM (XEM) price today ImmutableX (IMX) price today dYdX (DYDX) price today SingularityNET (AGIX) price today Frax Share (FXS) price today Synthetix (SNX) price today Render Token (RNDR) price today Convex Finance (CVX) price today EOS (EOS) price today Casper (CSPR) price today