Historical Analysis: Top 20 Crypto Coins Shake-up Over 5 Years A detailed comparison of the top 20 cryptocurrencies by market cap from January 2021, 2023, and 2026 reveals significant turnover. While Bitcoin and Ethereum remain dominant (up 293% and 90% respectively over 3 years), many altcoins have stagnated or disappeared. The analysis highlights the volatility of the altcoin market and the difficulty of maintaining a top position over time. https://t.co/t699YEiX71 #BTC #ETH #altcoins