How to Use Bitcoin Dominance to Time Altcoin Entries
By Menno — 13 years in crypto, 3 bear markets survived, zero paid promotions
Last updated: March 2026
Bitcoin dominance measures Bitcoin's share of total crypto market cap. When dominance falls from a high level — typically dropping below 50–52% after peaking near 60–65% — it historically signals the start of altcoin outperformance. Understanding this cycle allows investors to shift allocations at the right time rather than chasing altcoin moves after they have already run.
Key Takeaways
- •Bitcoin dominance cycles because capital enters crypto through Bitcoin first, then rotates into altcoins as the cycle matures.
- •Dominance peaking near 60–65% and declining below 52% has historically signalled the beginning of altcoin outperformance in every major cycle.
- •The correct time to build altcoin positions is when dominance is showing weakness above 52%, not after it has already fallen to 40%.
- •Rising dominance in a bear market means altcoins are falling faster than Bitcoin — the opposite signal from rising dominance in a bull cycle.
- •Combining Bitcoin dominance with individual altcoin risk scores gives the highest-confidence altcoin entry setups.
What Bitcoin Dominance Is and Why It Cycles
Bitcoin dominance is simply Bitcoin's market capitalisation expressed as a percentage of the total crypto market cap. If Bitcoin is worth $1 trillion and the entire crypto market is worth $2 trillion, Bitcoin dominance is 50%.
This number cycles because crypto capital does not flow uniformly. Early in a bull cycle — especially coming out of a bear market — Bitcoin tends to lead. Institutional and retail capital re-enters the market through Bitcoin first because it is the most recognised, most liquid, and most trusted asset. Altcoins receive limited capital at this stage.
As the cycle matures and Bitcoin has already made significant gains, capital begins rotating into altcoins in search of higher percentage returns. This rotation drives altcoin prices up faster than Bitcoin, reducing Bitcoin's relative share of the market — i.e., dominance falls. This pattern has repeated in every major crypto cycle from 2017 onward.
The Historical Pattern: What Falling Dominance Has Meant for Altcoins
In the 2020–2021 bull cycle, Bitcoin dominance peaked near 72% in January 2021, at the height of Bitcoin's first major leg up. Over the following four months, dominance fell to approximately 40% as Ethereum, Solana, Cardano, and dozens of smaller altcoins massively outperformed Bitcoin. During this period, many altcoins gained 500–2,000%.
In the 2017 cycle, Bitcoin dominance peaked at around 62% in mid-2017 and fell to roughly 37% by early 2018 — again coinciding with the most explosive period of altcoin outperformance.
The signal is not that falling dominance guarantees every altcoin will pump. It signals that the market conditions favour altcoin outperformance relative to Bitcoin. Well-positioned investors use this to shift a portion of their allocation from Bitcoin toward higher-beta altcoins at the start of the dominance decline, rather than after altcoins have already doubled.
The Levels That Matter and How to Read the ChartPremium
Bitcoin dominance on a weekly chart reveals structural support and resistance zones that have been respected across multiple cycles. The most important levels:
When Bitcoin Dominance Rises: What It Signals and What to DoPremium
Included with the full lesson.
Frequently Asked Questions
Where can I find Bitcoin dominance data?▾
CoinMarketCap and TradingView both display Bitcoin dominance as a trackable metric. On TradingView, use the ticker BTC.D to pull up the dominance chart with full indicator support.
Does falling Bitcoin dominance mean I should sell Bitcoin?▾
Not necessarily. Falling dominance means altcoins are growing faster than Bitcoin, not that Bitcoin is falling. In many altcoin seasons, Bitcoin continues to rise — just at a slower rate. The signal is to add altcoin exposure, not to exit Bitcoin.
What level of Bitcoin dominance signals the peak of altcoin season?▾
Historically, the 38–42% range has marked the floor of Bitcoin dominance during peak altcoin season. When dominance approaches these levels, the bulk of altcoin outperformance has typically already occurred. This is a time to be reducing altcoin exposure, not adding it.
Is Bitcoin dominance less reliable now that stablecoins are a large part of the market?▾
Some analysts calculate an adjusted dominance that excludes stablecoins, giving a cleaner picture of Bitcoin's share among non-stable assets. Both metrics are useful. The directional signal — whether dominance is rising or falling — remains valid regardless of which version you use.
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Altcoin season begins when Bitcoin dominance falls from its cycle peak (typically 60–65%), the overall market is in an uptrend, and capital starts rotating from Bitcoin into mid and small cap altcoins. The four indicators that confirm altcoin season are: falling Bitcoin dominance, rising total altcoin market cap, increasing altcoin volume relative to Bitcoin, and the Altcoin Season Index reading above 75.
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Altcoin risk scoring assigns each coin a number from 0 to 100 based on multiple factors including the bi-weekly RSI, distance from the 4-year high, market cap, token unlock schedule, and project liquidity. A score near 0–15 historically marks a buy zone; a score near 80–100 marks a sell zone. The system removes emotion from altcoin decisions by turning complex multi-factor analysis into a single actionable number.
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