Crypto Market Review: Structure, Cycles and What the Charts Show
A structural review of the crypto market — total market cap across cycles, Bitcoin dominance, sector weights, ETF flows and stablecoin supply. Context, not investment advice.
By LedgerMind · · 11 min read
Reviewing the crypto market usually means guessing at prices. This is the other kind of review: what the market is built from, how it has behaved across cycles, and what structurally changed in the last two years. Prices move on sentiment; structure moves slowly and tells you more.
≈$3.8T
Total crypto market cap
end 2025, estimated
≈58%
Bitcoin dominance
share of total market cap
≈$55B
Spot BTC ETF net inflows
cumulative since Jan 2024
≈$285B
Stablecoin supply
up from $28B in 2020
The shape of the market
The total value of all crypto assets has moved in a recognisable rhythm since 2016: a sharp run-up, a drawdown of 70–85 percent, a long quiet base, then another run-up from a higher floor. The peaks in 2017, 2021, and the 2024–25 expansion are each roughly a Bitcoin halving cycle apart, which is why the four-year pattern gets so much attention.
Total crypto market capitalization, 2016–2025
Combined market value of all crypto assets at year-end, in trillions of US dollars.
Estimate: CoinGecko
Data table
| Year | Market cap (US$ trillions) |
|---|---|
| 2016 | $0.02T |
| 2017 | $0.6T |
| 2018 | $0.13T |
| 2019 | $0.19T |
| 2020 | $0.77T |
| 2021 | $2.3T |
| 2022 | $0.83T |
| 2023 | $1.65T |
| 2024 | $3.3T |
| 2025 | $3.8T |
Two caveats on the cycle. First, the sample size is three — that is a pattern, not a law, and each cycle has had a different driver (retail in 2017, leverage and DeFi in 2021, institutions and ETFs in 2024–25). Second, the floor keeps rising: the 2022 low was roughly the same size as the 2021 start, not the 2018 low. The market gives back most of each run but not the base it built.
Bitcoin dominance
“Dominance” is Bitcoin's share of the total crypto market cap, and it is the quickest read on risk appetite within crypto. It falls when money rotates into smaller, more speculative tokens and rises when it retreats to the safest asset in the category.
Bitcoin dominance, 2017–2025
Bitcoin's share of total crypto market capitalization at year-end, as a percentage.
Estimate: CoinGecko
Data table
| Year | BTC dominance |
|---|---|
| 2017 | 38% |
| 2018 | 52% |
| 2019 | 68% |
| 2020 | 72% |
| 2021 | 40% |
| 2022 | 40% |
| 2023 | 52% |
| 2024 | 56% |
| 2025 | 58% |
The 2024–25 period stands out for dominance staying high — mid-to-high 50s — well into a market expansion. In previous cycles a rising market pulled dominance sharply down as speculation spread. The spot Bitcoin ETFs are the widely-cited reason: new institutional money has a clean, regulated way to buy Bitcoin specifically, and less of it flows out along the risk curve.
What the market is made of
Break the market into segments and the concentration is stark. Bitcoin and Ethereum together are around 70 percent of all value. Stablecoins — the part that behaves like infrastructure rather than a bet — are a larger share than the entire DeFi token sector.
Crypto market capitalization by segment
Approximate share of total crypto market value by category, end of 2025.
- Bitcoin58%
- Ethereum12%
- Other Layer-1 networks11%
- Stablecoins8%
- Everything else8%
- DeFi tokens3%
Estimates: CoinGecko, DeFiLlama
Data table
| Segment | Share of market cap |
|---|---|
| Bitcoin | 58% |
| Ethereum | 12% |
| Other Layer-1 networks | 11% |
| Stablecoins | 8% |
| Everything else | 8% |
| DeFi tokens | 3% |
The institutional layer
The single biggest structural change to this market happened in January 2024, when US regulators approved spot Bitcoin exchange-traded funds. For the first time, a pension fund, a financial advisor, or a retirement account could hold Bitcoin exposure through a normal brokerage. Cumulative net inflows reached an estimated $55 billion by the end of 2025.
Cumulative net inflows to US spot Bitcoin ETFs
Running total of net money into US spot Bitcoin ETFs since launch in January 2024, in billions of US dollars.
Estimate: Farside Investors
Data table
| Period | Cumulative net inflow (US$ billions) |
|---|---|
| Feb 24 | $8B |
| Jun 24 | $15B |
| Oct 24 | $21B |
| Feb 25 | $37B |
| Jun 25 | $48B |
| Dec 25 | $55B |
This matters beyond the dollar figure. ETF flows are reported daily, which gives the market a visible, slow-moving demand signal it never had before — and it ties a slice of crypto demand to traditional finance's allocation decisions rather than to crypto-native sentiment alone.
Stablecoins: the plumbing
Stablecoin supply is the least glamorous chart in crypto and arguably the most important. It grew through the 2022–23 downturn only briefly dipping, then roughly doubled into 2025. That growth is demand for on-chain dollars — for trading, payments, savings, and increasingly as reserve assets — and it is largely indifferent to whether Bitcoin is up or down.
Total stablecoin supply, 2020–2025
Combined circulating supply of US-dollar stablecoins at year-end, in billions of US dollars.
Estimates: DeFiLlama, Artemis
Data table
| Year | Supply (US$ billions) |
|---|---|
| 2020 | $28B |
| 2021 | $150B |
| 2022 | $140B |
| 2023 | $130B |
| 2024 | $205B |
| 2025 | $285B |
Stablecoins also carry the market's biggest single concentration risk and its biggest compliance surface. Issuers can freeze balances at the contract level, and most frozen value has historically sat on one network — which is the subject of our separate piece on how frozen funds happen.
What actually moves this market now
Four inputs explain most of the structural change since 2023:
- Interest rates. When the risk-free rate is high, speculative assets compete with a safe 4–5 percent; when it falls, that pressure eases. Crypto now trades partly like a macro asset.
- ETF flows. A daily, public demand signal tied to traditional allocation, concentrated in Bitcoin.
- Regulation. The 2023–25 frameworks — MiCA in Europe, stablecoin rules in several markets — reduced the “is this even legal” discount that had kept institutions out.
- Stablecoin growth. A steadily rising base of on-chain dollars that funds the rest of the market's activity.
What to watch
Neutral signposts, not predictions:
- Whether Bitcoin dominance holds in the 50s or falls, which would signal risk appetite spreading again.
- Whether ETF flows stay net-positive or reverse for sustained periods.
- Stablecoin supply — a flat or falling line has historically preceded weaker markets.
- Tokenized real-world assets, covered in our RWA piece, as a source of demand that doesn't depend on crypto sentiment.
Frequently asked questions
How big is the crypto market in 2026?
The total market capitalization of all crypto assets was estimated near $3.8 trillion at the end of 2025. The figure is volatile; the structural point is that the market's floor has risen with each cycle.
What is Bitcoin dominance and why does it matter?
It is Bitcoin's share of total crypto market value — around 58 percent at the end of 2025. Rising dominance generally means capital is concentrating in Bitcoin; falling dominance means it is spreading to smaller, riskier tokens.
How much money is in Bitcoin ETFs?
US spot Bitcoin ETFs are estimated to have taken in roughly $55 billion in cumulative net inflows between their January 2024 launch and the end of 2025.
Is this crypto market review investment advice?
No. It is a description of market structure and history for context. It contains no recommendations, and you should not treat it as guidance to buy or sell anything.