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Welcome to CryptoAltcoin
What Is Altcoin Dominance & How to Identify an Altseason
Intermediate
2025-07-17 | 15m
Altcoin dominance is the collective market share of all cryptocurrencies except Bitcoin, and it can be used to identify signals that precede an altseason, when altcoins may generate significant returns for their holders.
For traders and investors looking to navigate the cryptocurrency space, understanding market changes is important, as it can help them identify early signs of an altseason. One of the most powerful metrics for this is altcoin dominance – a concept that provides an overview of market sentiment and the ongoing “tug-of-war” for capital between Bitcoin and all other cryptocurrencies.
A Brief History: Why Dominance Shifts Happen
Source: TradingView
The relationship between
Bitcoin and altcoins has evolved dramatically over the years, with major shifts in dominance driven by technological innovation, such as the launch of Ethereum and the introduction of
smart contracts.
The Era of Bitcoin Dominance (2009-2016): In the early years of cryptocurrency, the market was almost exclusively concentrated on Bitcoin. As one of the very few digital assets available, Bitcoin consistently held a dominance of over 90-95%. Early altcoins like Litecoin and
Ripple existed but were seen as niche experiments with minimal impact on the overall market structure.
The First Great Shift: The 2017 ICO Boom: The year 2017 marked the first major paradigm shift with Ethereum. The introduction of the ERC-20 token standard created a revolutionary new fundraising mechanism: the Initial Coin Offering (ICO).
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This attracted interest and capital into many new projects, which spun out their own altcoins. The effect on Bitcoin's dominance was unprecedented, as it plummeted from over 85% in February 2017 to a historic low of around 38% by January 2018.
The Second Wave: "DeFi Summer" and NFT Mania (2020-2021): After the 2018 bear market, the next major shift was again sparked by innovation on Ethereum. The period known as "DeFi Summer" was ignited by new financial primitives like "liquidity mining," which attracted billions of dollars in capital seeking high yields.
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This cycle was more mature and narrative-driven, with capital rotating between sectors like Decentralized Finance (DeFi), Non-Fungible Tokens (NFTs), and GameFi. This second wave of innovation once again drove Bitcoin's dominance down significantly, from a peak above 70% at the start of 2021 to a low of around 40% by May 2021.
The Modern Landscape (2024-Present): After another bear market caused by the collapse of FTX and Luna, institutional adoption grew through the successful launch of spot Bitcoin ETFs in the U.S like BlackRock’s IBIT. While this led to an inflow of institutional capital concentrated in Bitcoin, this period also saw a rise in the popularity of memecoins with token launchpads like
Pump.fun, which contributed to altcoin growth.
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Now that memecoin growth has slowed, the concentration of capital in Bitcoin is acting as a counterweight to altcoin growth, potentially establishing a higher "floor" for Bitcoin's dominance.
How to Recognize an Altcoin Season: The Components of a Market Cycle
An "altcoin season" or "altseason" is a distinct market cycle phase where altcoins, as a collective, generate returns that significantly exceed those of Bitcoin.
These periods are not random but follow a pattern of capital rotation as investor sentiment shifts from risk-averse to risk-seeking, usually accompanied by the
fear and greed index shifting towards greed.
Crypto market cycles typically unfold in a sequence of four phases as investors' risk appetite grows.
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Phase 1: Bitcoin Leads: A new bull market almost invariably begins with capital flowing into Bitcoin. Its price rises sharply, and it outperforms a stagnant altcoin market, causing Bitcoin Dominance (BTC.D) to rise.
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Phase 2: Ethereum and Solana Catches Up: Once Bitcoin has posted substantial gains and its price begins to consolidate, investors' risk appetite increases, and capital begins to rotate into other popular assets. During this phase, BTC.D typically flattens or begins a slow decline.
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Phase 3: Large-Cap Altcoins Rally: With both Bitcoin and other major assets having appreciated, money continues its journey down the risk curve into other established, large-cap altcoins. This is when the altseason truly begins, and BTC.D starts to fall more sharply.
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Phase 4: Full Altseason & Euphoria: This is the phase of maximum speculation, where the rally expands to the entire altcoin market, including mid-cap, small-cap, and even micro-cap projects. This period is characterized by explosive, widespread gains, with BTC.D reaching its cycle lows.
Key Signals an Altseason Is Coming
A combination of these signals may suggest that an altseason is coming soon:
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Declining Bitcoin Dominance: A sustained breakdown of BTC.D from a major resistance level is the most direct signal. Historically, peaks in the 60-70% range have often preceded significant altcoin rallies.
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Bitcoin Price Consolidation: Altseasons rarely occur while Bitcoin is in a parabolic uptrend. They typically ignite after a strong Bitcoin rally when its price begins to move sideways, giving altcoins the "permission" to rally.
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Rising Altcoin Market Cap: A clear upward trend in charts that specifically track the altcoin market is a vital confirmation. The most useful tickers for this on TradingView are TOTAL2 (the total crypto market cap excluding Bitcoin) and TOTAL3 (the total crypto market cap excluding both Bitcoin and Ethereum).
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Increased Altcoin Trading Volume: A noticeable spike in the trading volumes of various altcoins across exchanges is a key sign of growing investor interest.
The Stablecoin Variable and Its Impact on Dominance
When analyzing dominance, we must also consider stablecoins. These assets are designed to maintain a stable value by pegging to an external asset like the U.S. dollar.
Because stablecoins are included in the "Total Crypto Market Cap," their growth has a direct and significant impact on dominance metrics. Every dollar held in a stablecoin like
USDT or
USDC increases the total market cap, thereby acting as a powerful and persistent dilutive force on Bitcoin's market share percentage. A dollar held in USDT is counted as part of the "altcoin" market cap, even though it is not a speculative investment.
This creates the potential for significant misinterpretation. In a "risk-off" scenario where investors sell both Bitcoin and speculative altcoins for stablecoins, the inflow into stablecoins can prop up the total market cap in favor of altcoins while Bitcoin's cap falls. This causes BTC.D to fall, which an uninformed analyst might see as bullish for altcoins, when in reality, the market is experiencing a flight to safety.
Tools for Identifying an Altseason
You can use charting tools and on-chain intelligence to identify a shift in altcoin dominance or an altseason.
CoinGecko offers a selection of
key cryptocurrency charts that you can use to monitor the crypto market.
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Total Crypto Market Cap Chart: This provides an overview of the entire crypto market.
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Bitcoin Dominance Chart: This chart tracks Bitcoin dominance and the rest of the top 10 cryptocurrencies.
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Stablecoin Market Cap Chart: This chart acts as an inverse indicator of market sentiment. A rise in stablecoin market cap suggests a flight to safety, while a decrease may suggest that this capital is being deployed back into the market.
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Altcoin Market Cap Chart: This chart tracks every cryptocurrency except Bitcoin.
TradingView offers a vast library of cryptocurrency tickers and powerful charting tools. One ticker to monitor is
CRYPTOCAP:OTHERS.D. This chart measures the dominance of all cryptocurrencies excluding the top 10 by market capitalization, filtering out the immense weight of Bitcoin, Ethereum, and major stablecoins. A strong, sustained rise in OTHERS.D can indicate that a broad-based, high-risk-appetite rally is underway.
Glassnode is an on-chain analytics platform that provides the fundamental data to understand why dominance metrics are shifting, such as tracking capital flows and the behavior of long-term holders.
Strategies for Navigating an Altseason
Here are some ideas on how you can navigate an altseason.
Portfolio Allocation
A dynamic approach allows an investor to align their portfolio with the prevailing market phase.
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Bitcoin-Dominant Phase: When BTC.D is high and in a clear uptrend, an investor might opt for a portfolio that is significantly overweight in Bitcoin.
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Altcoin-Dominant Phase: Once BTC.D is declining and indicators like a rising OTHERS.D emerge, a trader might consider increasing allocation to the broader altcoin market.
Risk Management
By combining signals, one can construct a clear risk-on/risk-off indicator.
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Risk-Off Signal: A rising BTC.D, especially when occurring simultaneously with a rising USDT.D, is a strong “Risk-Off” signal of fear in the market.
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Risk-On Signal: The strongest "Risk-On" signal is a falling BTC.D paired with a falling USDT.D, which indicates sidelined capital is being actively deployed into the market.
Conclusion
The study of altcoin dominance provides a powerful lens through which to view the structure, sentiment, and cyclical nature of the cryptocurrency market. The key to navigating the market often involves using this knowledge to identify the phases of capital rotation and spot the clear, quantitative signals that herald the beginning of an altseason.
By combining an analysis of benchmark charts like BTC.D with additional signals from OTHERS.D and contextualizing them with the inverse sentiment indicator like stablecoin dominance, traders can build an analysis framework. In an evolving market increasingly influenced by institutional capital and narrative-driven sector rotations, understanding altcoin dominance and its related indicators allows traders to explore opportunities in the digital asset market.
CoinCatch Team
Disclaimer: Digital asset prices carry high market risk and price volatility. You should carefully consider your investment experience, financial situation, investment objectives, and risk tolerance. CoinCatch is not responsible for any losses that may occur. This article should not be considered financial advice.
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