Why Today’s Crypto Market Lacks the Breadth of the 2020–2021 Rally
For many crypto investors, memories of the 2020–2021 bull market still shape expectations for what a true rally should look like.
Back then, Bitcoin’s surge was echoed across the market, with altcoins rising in tandem and broad participation driving momentum. But according to fresh analysis from Benjamin Cowen, today’s market structure tells a very different story.
- The Advance Decline Index shows crypto market breadth has been weakening since 2021
- Bitcoin’s relative strength reflects defensive capital flows, not broad risk appetite
- The altcoin market has been pressured by declining interest and liquidity dilution
- Today’s cycle lacks the widespread participation seen in 2020–2021
Rather than a synchronized upswing, Cowen argues that the current environment has been defined by shrinking participation beneath the surface. While Bitcoin has held up relatively well, the broader crypto market has struggled to regain traction, revealing a growing disconnect between BTC and most alternative assets.
Market Breadth Has Been Eroding for Years
At the center of Cowen’s argument is the Advance Decline Index (ADI) for the top 100 cryptocurrencies, a metric that tracks how many assets are rising versus falling. His data shows that since 2021, this index has been locked in a persistent downtrend, signaling that fewer coins are contributing to overall market strength.
This contrasts sharply with the previous cycle, when rising prices were supported by widespread buying interest across the asset class. In Cowen’s view, trying to recreate that narrative today ignores years of structural weakening that have steadily reduced market breadth.
Bitcoin Strength Has Been Defensive, Not Expansive
Cowen also challenges the idea that Bitcoin’s resilience automatically signals a healthy bull market. Instead, he describes much of BTC’s outperformance as defensive positioning. Investors rotated out of riskier altcoins and into Bitcoin, while institutional demand focused narrowly on BTC rather than the wider crypto universe.
This dynamic helped mask underlying weakness for a time. As long as Bitcoin continued to attract capital, the deterioration in altcoins remained less visible. But once Bitcoin’s momentum slowed, those cracks became harder to ignore.
Altcoins Face a Liquidity Squeeze
Another factor weighing on the market is sheer scale. Over the past few years, the number of altcoins has exploded, spreading liquidity thinner with each new launch. According to Cowen, this dilution has made it increasingly difficult for the broader market to sustain rallies, especially in an environment where overall interest in crypto remains subdued.
The result is a market where select assets can perform, but widespread participation struggles to return.
The information provided in this article is for educational purposes only and does not constitute financial, investment, or trading advice. Coindoo.com does not endorse or recommend any specific investment strategy or cryptocurrency. Always conduct your own research and consult with a licensed financial advisor before making any investment decisions.
Alex is Editor-in-Chief of Coindoo and co-founder of Millennial Media Group, with nearly a decade of experience covering financial markets - crypto first, then everything else. It started in 2016 with Bitcoin. Like most people at the time, he didn't fully understand it - so he kept digging. Blockchain, tokenomics, the projects, the cycles. That curiosity never stopped, and eventually pulled him into traditional markets too: equities, commodities, macro. Not because he left crypto behind, but because you can't properly understand one without the other. What drives him is straightforward: he wants to know why something is happening, not just that it's happening. Most market coverage stops at the headline - price up, price down, here's a chart. Alex finds that kind of reporting actively unhelpful. If you walk away from an article without understanding the mechanism behind the move, what did you actually learn? He holds a degree in Tourism from New Bulgarian University - not the most obvious path into financial markets, but markets have a way of pulling in people who are simply too curious to stay out. He has authored over 200 in-depth analyses and more than 10,000 articles across crypto and traditional finance. He still thinks every day in markets teaches him something new. That's probably why he hasn't stopped.
