According to Pentoshi on Twitter, the 2017-2018 period marked an S-tier altcoin cycle, with traders witnessing rapid 200% gains from simple project updates, highlighting extreme volatility and opportunity for short-term trading strategies (source: @Pentosh1, May 30, 2025). The 2020-2021 cycle, rated A-tier, was fueled by unprecedented fiscal stimulus and Covid-19 lockdowns, during which 40% of all USD in circulation was printed, significantly boosting crypto liquidity and driving another round of major altcoin rallies (source: @Pentosh1, May 30, 2025). For today’s traders, understanding these historic cycles is crucial for timing entries and exits, especially as macroeconomic shifts and monetary policy continue to influence crypto market dynamics.