The 2020 to 2021 altcoin cycle reveals a compelling pattern that savvy traders shouldn't overlook. Watch what happened: many altcoins surged through 2020, then crashed back near their lows. Fast forward to 2021—the exact same assets pumped again, reaching new highs. Here's the kicker: the alts that rallied in 2020 repeated their performance in 2021. Meanwhile, coins that missed the 2020 run largely stayed sidelined. This isn't random. It signals how capital flows tend to cycle through the same performers during bull markets. Understanding this repetitive pattern can help you identify which assets have genuine institutional or community backing versus one-off hype plays. The lesson? Track which alts led in previous cycles—they often lead again.