Table of contents
- What BTC dominance measures
- How BTC dominance is calculated
- What Bitcoin dominance history teaches traders
- How to use BTC dominance in a trading decision
- Why BTC dominance still matters after 2025
- Turn a dominance observation into an explicit rule
BTC dominance matters because it shows whether Bitcoin’s share of the measured crypto market is expanding or shrinking. It helps traders investigate relative strength and reconsider allocations, but it cannot establish whether Bitcoin or an individual altcoin will rise in dollar terms (dominance interpretation guide).
What BTC dominance measures
Bitcoin dominance is Bitcoin’s market capitalization divided by the combined capitalization of the cryptocurrencies included by a data provider. Market capitalization uses price multiplied by circulating supply. TradingView’s denominator, for example, covers its top 125 cryptocurrencies rather than every token in existence (market capitalization methodology).
Think of the percentage as a share of a changing pie. Bitcoin can gain share while losing value if the rest of that pie shrinks faster. Conversely, its share can decline while its own value grows. These are mathematical possibilities, not contradictory market signals. Keep the dollar-price question separate from the market-share question when reviewing a chart.
If market cap, circulating supply, and trading pairs are unfamiliar, use the crypto trading vocabulary guide before comparing charts. Understanding those terms makes it easier to distinguish a change in asset price from a change in the quantity counted.
How BTC dominance is calculated
The formula is BTC dominance = Bitcoin market capitalization ÷ total included crypto market capitalization × 100. Use the same provider and observation time for both inputs. TradingView identifies its dominance series as CRYPTOCAP:BTC.D, with CRYPTOCAP:TOTAL supplying the denominator.
Before interpreting a move, ask what changed: Bitcoin’s capitalization, the capitalization of other assets, or the membership of the index? TradingView explains that coins entering or leaving its ranked universe can create chart spikes. An abrupt jump therefore deserves investigation before you interpret it as a sudden change in trader preference (index composition explanation).
Record the provider and date beside any percentage you save. A historical reading is useful only when you can identify what it measured; the worked illustration below shows why the denominator matters.
For a hypothetical Bitcoin market cap of $1.2 trillion and an included total market cap of $2 trillion, dominance is $1.2 trillion ÷ $2 trillion × 100 = 60%. If Bitcoin stays at $1.2 trillion while the total expands to $2.4 trillion, the result becomes $1.2 trillion ÷ $2.4 trillion × 100 = 50%. Bitcoin’s capitalization has not fallen, but its share has declined by 10 percentage points.
What Bitcoin dominance history teaches traders
CoinGecko’s historical study shows annual average dominance falling from 93.3% in 2013 to 44.6% in 2018, recovering to 62.7% in 2020, then declining to 47.6% in 2021. These are annual averages, not year-end readings or universal trading thresholds (Bitcoin dominance historical study).
The same research offers a particularly useful counterexample to simplistic interpretation: during 2021, Bitcoin’s price increased 62.6%, while its dominance fell from 69.5% to 38.2%. The wider market grew faster. Falling dominance therefore did not mean Bitcoin holders necessarily lost money in dollars.
Use that history to challenge a proposed rule. If your rule treats every decline in dominance as a reason to sell BTC, ask how it would have handled that period. Historical patterns can generate research questions without becoming instructions to repeat a previous cycle.
How to use BTC dominance in a trading decision
Start by comparing dominance with Bitcoin’s dollar price over the same interval. The following interpretations follow from the ratio; they describe relative performance rather than forecasts.
- BTC price rises and dominance rises: Bitcoin is gaining value and market share. Investigate whether an altcoin allocation is actually outperforming your BTC alternative.
- BTC price falls and dominance rises: Bitcoin is losing value but gaining share. Do not confuse relative resilience with protection from a dollar loss.
- BTC price rises and dominance falls: the rest of the included market is expanding faster in aggregate. Research specific assets before treating that expansion as broadly shared strength.
- BTC price falls and dominance falls: Bitcoin is losing both value and share. The ratio alone does not establish that buying another asset would produce a gain.
For a practical review, write down your intended holding period, compare BTC with the asset you are considering, and state what evidence would invalidate the trade. Use dominance to decide which comparison deserves attention. Let the actual instrument’s entry, allocation, and exit rules determine the order.
Cornix connects TradingView alerts to automated exchange trades through TradingView Bots, with configurable entry, stop-loss, and take-profit levels. Separate bot UUIDs support trade-opening and trade-closing alerts. That mechanism becomes relevant after you have translated your analysis into explicit instructions (TradingView Bot overview).
Keep the market-context decision separate from the execution trigger unless your strategy explicitly combines them. Before building an alert workflow, read the TradingView crypto trading guide to work through chart selection, alert conditions, and execution review. Write the expected action before configuring it, so a later result can be compared with the original instruction.
Why BTC dominance still matters after 2025
The useful question is how market share changes under a defined methodology, not whether a past year’s forecast came true. CoinGecko’s historical study ends on July 22, 2025; its partial-year figures should not be mistaken for a current reading or a full-year result. Date every observation used in a trading note.
Stablecoins also affect interpretation because they can be included in the denominator. Holding other values constant, adding stablecoin capitalization reduces Bitcoin’s share without requiring an altcoin price rally. TradingView provides stablecoin-excluding indices, including TOTALES and TOTAL3ES, for investigating a different market universe.
Choose the question before choosing the chart. If you want to investigate non-Bitcoin, non-Ethereum assets without stablecoins, that is a narrower question than standard BTC dominance answers. Do not switch between differently constructed series halfway through a comparison and treat the result as one continuous measure.
Turn a dominance observation into an explicit rule
For your next review, save one dated dominance observation and one matching BTC price observation. Write whether you are investigating relative performance, total exposure, or a particular entry. Then specify what would make you keep, revise, or reject the trade. This keeps a market-wide ratio from becoming an unexplained order instruction.
When your analysis has become a defined execution plan, explore the Cornix automation features to choose an appropriate workflow.
Frequently Asked Questions
Is a move from 50% to 55% a 5% increase in BTC dominance?
It is a rise of 5 percentage points. The relative increase is (55 − 50) ÷ 50 × 100 = 10%. Use percentage points when describing the difference between two dominance readings.
Does dominance show how much new money entered Bitcoin?
No. It compares market capitalizations, which use price and circulating supply. It is not an accounting record of deposits or net purchases. Do not convert a capitalization change into an equivalent cash inflow.
Can an index update change a past dominance chart?
TradingView explains that large spikes associated with changes in index composition can be manually smoothed later. Save the observation date and the chart used if you need to revisit a trading decision.
