SUN crypto surges higher as Justin Sun pledges perpetual buybacks – raising a fresh question: can momentum hold above $0.3 and push toward new cycle highs? Sun Token (SUN), the governance coin of TRON’s DeFi hub SUN.io, surged on Sept. 22, after founder Justin Sun confirmed that revenue from a new perpetual exchange will be used to buy back the token. SUN traded between $0.034 and $0.035 over the past day, with 24-hour volume near $950M and a market capitalization of around $656M. The session’s range ext ...