System1 (SST) is up 5.8%, or 56c to $10.11. Published first on TheFly – the ultimate source for real-time, market-moving breaking financial news. Try Now>> See today’s best-performing stocks on TipRanks >> Read More on SST: System1 rises 28.3% System1 trading resumes System1 trading halted, volatility trading pause System1 rises 16.4% System1 rises 16.9% Disclaimer & DisclosureReport an Issue