Educational content. This article explains why cryptocurrency prices outside bitcoin tend to fall further in a market decline and what that means for position sizing on crypto CFDs. It does not constitute investment advice, a recommendation, or an offer to buy or sell any financial instrument. CFD trading carries significant risk of loss and may not be suitable for all investors. Past patterns do not guarantee future results.
Altcoins fall harder than bitcoin because the same wave of selling hits a much thinner market. Bitcoin has the deepest order books, the widest set of buyers and the largest share of the capital that stays in crypto through a drawdown; every other coin has less of all three, so an identical amount of selling pressure moves its price further.
Everything else follows from that. The leverage that gets liquidated, the dollar pairs that fall twice, the buyers who do not appear, the dominance ratio that climbs on every red week: these are all descriptions of the same depth difference from different angles.
For the instruments themselves, see crypto CFD trading. For the two coins at the top of the book, see how to trade Bitcoin and how to trade Ethereum. This article is about the difference between them and everything below them.
How Much Harder Do Altcoins Fall?
Altcoins typically fall further than bitcoin in the same decline, and the gap widens as the decline gets faster and as the coin gets smaller.
The clearest measurement is a single violent session, because it removes the question of what happened over the following weeks. On 5 August 2024, after the Bank of Japan raised its policy rate to 0.25 percent on 31 July and set off a global unwind of yen-funded carry positions, crypto fell alongside equities. Reported moves for the day put bitcoin down around 19 percent and ether down around 25 percent, with bitcoin trading as low as roughly USD 49,000 and ether as low as roughly USD 2,100.
That is a six percentage point gap between the two largest, most liquid, most institutionally held crypto assets in existence, in one session, from the same shock. The gap between bitcoin and coins ranked well below ether is characteristically wider still.
Over full cycles the difference compounds. Bitcoin's drawdowns from cycle highs have historically run in the region of 70 to 85 percent, while a large share of smaller coins have fallen further and a meaningful number have never recovered their previous high at all. The distinction matters: bitcoin's drawdowns have so far been deep and recovered, whereas for individual altcoins recovery is a coin-by-coin question rather than a market-wide one. Nothing in that record is a forecast of what any future decline will do.
The Mechanism: Four Reasons Altcoins Amplify Bitcoin's Moves
The amplification is structural. Four features of altcoin markets each add to the same effect, and they reinforce one another during stress.
Reason 1: Order Book Depth Is Thinner
Price moves when an order consumes the resting liquidity at the current price and reaches for the next level, so the same order moves a thin book further than a deep one.
Bitcoin has the deepest spot and derivatives books in the asset class by a wide margin, spread across the largest number of venues and market makers. A coin ranked outside the top ten has a fraction of that depth, often concentrated on fewer venues. A sell order that bitcoin absorbs within a few tenths of a percent can take a smaller coin through several percent of book.
This asymmetry gets worse exactly when it matters. Market makers widen quotes and reduce size during volatility, and they reduce size most on the instruments where their inventory risk is highest, which is the thin ones. Depth therefore falls fastest in the market that already had the least of it. What is the spread in trading covers the same mechanism as it appears in the quoted spread.
Reason 2: Altcoins Are Priced Against Bitcoin as Well as the Dollar
Many altcoins trade actively against bitcoin as well as against the dollar, and the two quotes interact during a decline.
When a coin holds its value in bitcoin terms while bitcoin falls against the dollar, the coin's dollar price falls by the full amount of bitcoin's fall. If the coin also weakens against bitcoin, which is the common case in risk-off conditions, the two effects multiply rather than add in isolation. A coin that falls 10 percent against bitcoin on a day when bitcoin falls 15 percent against the dollar has fallen roughly 24 percent in dollar terms.
This is why altcoin dollar charts can look far worse than the sentiment around any individual project would suggest. Part of the move is not about the coin at all.
Reason 3: Leverage Is Concentrated on the Same Side
Leveraged positioning in altcoins is more one-directional than in bitcoin, so liquidations cluster.
Perpetual futures on altcoins carry substantial open interest relative to the size of the underlying spot market, and that positioning skews long during rallies. When price falls far enough to trigger liquidations, those positions are closed by forced market selling into the thin book described above, which pushes price into the next tier of liquidation levels. The cascade is self-reinforcing while it runs.
Bitcoin experiences the same mechanism, but its liquidation flow is a smaller fraction of its available depth, so the cascade damps out sooner. On a small coin the cascade can consume a large part of the visible book before it stops. What is stop out level in trading explains the equivalent forced-closure mechanic on a margin account.
Reason 4: The Buyer Base Is Narrower
The set of participants willing to buy during a drawdown is much larger for bitcoin than for anything else in the asset class.
Bitcoin has spot exchange-traded products, corporate treasury holders, long-horizon holders who do not sell into weakness, and a set of institutional allocators whose mandates name bitcoin specifically and do not extend further down the market. Very little of that structure exists for the average altcoin. When the marginal buyer is another leveraged trader rather than an allocator with a multi-year horizon, there is nothing underneath the price during a liquidation wave.
This is also why the effect is asymmetric across the cycle: the narrow buyer base that fails to catch a falling altcoin is the same narrow base that lets a small coin rise several hundred percent when flows reverse.
Bitcoin Dominance Is the Same Statement in One Number
Bitcoin dominance is bitcoin's share of total crypto market capitalisation, and it rises in declines because bitcoin loses less than the rest of the market.
The measured history is straightforward. CoinGecko's dominance research records bitcoin at 69.5 percent of total crypto market value at the start of 2021 and 38.2 percent by the end of that year, an altcoin-led period in which total market capitalisation rose from about USD 776 billion to about USD 2.3 trillion. It then records the ratio climbing again through annual averages of 45.6 percent in 2023, 51.9 percent in 2024 and 59.3 percent in 2025, crossing 60.5 percent on 7 April 2025 for the first time since 15 March 2021.
Read as a mechanism rather than a signal, the ratio is simply the aggregate of everything above. Capital that leaves the asset class leaves altcoins first and fastest, and capital that stays concentrates in the deepest instrument. Dominance describes what already happened to relative prices; it is a summary statistic, not a leading indicator, and it is not used here as one.
When the Pattern Reverses
The relationship is a tendency produced by market structure, not a rule, and it reverses under identifiable conditions.
Sustained inflows into the asset class. Through 2021, altcoins outperformed bitcoin for most of the year, which is exactly what the fall in dominance from 69.5 to 38.2 percent describes. When new capital arrives faster than it can be absorbed by the largest instrument, the thin books that amplify declines amplify advances by the same mechanism.
Coin-specific catalysts. A protocol upgrade, a listing, a large partnership or a change in supply schedule affects one coin and not the others. During such episodes an individual altcoin can rise while bitcoin is flat or falling, because the flow is idiosyncratic rather than a beta expression.
Ether as a partial exception. Ether sits between bitcoin and the rest of the market on every dimension discussed here: deeper books than other altcoins, its own institutional access products, its own set of holders. Its drawdowns are typically worse than bitcoin's and better than the market below it, which is what the 19 against 25 percent split on 5 August 2024 shows.
Bitcoin-specific shocks. When the news is about bitcoin itself, the ordering can invert for as long as the shock lasts, because the amplification mechanism assumes the impulse originates at the top of the market and propagates down.
What the CFD Book Says About the Difference
The Vanto crypto specification isolates the effect, because the parts of the cost structure that could plausibly explain a difference in drawdown are identical across every coin.
| Specification | BTCUSD | ETHUSD | ADAUSD | DOGEUSD | XRPUSD |
|---|---|---|---|---|---|
| Contract size | 1 coin | 1 coin | 1 coin | 1 coin | 1 coin |
| Published swap, long | -16.56 | -16.56 | -16.56 | -16.56 | -16.56 |
| Published swap, short | +4.08 | +4.08 | +4.08 | +4.08 | +4.08 |
| Triple swap day | None | None | None | None | None |
| Maximum leverage | 1:10 | 1:10 | 1:10 | 1:10 | 1:10 |
Source: Vanto calculator data, snapshot 6 September 2026. Published swap values change with market conditions.
All 13 cryptocurrency CFDs in the book carry the same contract size of one coin, the same published swap on both sides, no triple swap day, and the same 1:10 leverage cap. Holding an altcoin position overnight costs the same, in published terms, as holding a bitcoin position of the same lot count. The difference in what happens to the position therefore comes entirely from the price behaviour of the underlying, which is the point: financing is a constant here, and volatility is not.
What is not uniform is position limits, and the pattern in those is informative in a different way.
| Symbol | Minimum lot | Lot step | Maximum lot |
|---|---|---|---|
| BTCUSD | 0.01 | 0.01 | 5 |
| ETHUSD | 0.01 | 0.01 | 100 |
| LINKUSD | 1 | 1 | 200 |
| DOGEUSD | 40 | 1 | 100 |
| XRPUSD | 50 | 0.01 | 10,001 |
Source: Vanto calculator data, snapshot 6 September 2026.
Because one lot is one coin on every crypto instrument, these lot counts are counts of coins, and the money value behind them differs by orders of magnitude. At the snapshot bid, the smallest permitted BTCUSD order carries roughly USD 798 of exposure and the smallest permitted ADAUSD order carries roughly USD 0.22. The lot number on the ticket says nothing about comparative size across coins, which is covered in full in what is minimum lot size in trading.
What the Difference Means for Position Sizing
The practical consequence is that equal lot counts across coins are not equal risk, and the platform does not adjust for it.
The 1:10 leverage cap is the same on bitcoin and on the smallest coin in the book, so the margin required per unit of notional is identical while the expected size of an adverse move is not. Two positions with the same notional value and the same margin can carry very different distances to a stop-out, and the difference is a property of the underlying rather than of the account. What is leverage in trading and what is margin in trading cover the arithmetic.
At the snapshot price, one lot of BTCUSD is roughly USD 79,837 of notional and requires roughly USD 7,984 of margin at the 1:10 cap. One lot of SOLUSD is roughly USD 105 of notional and requires roughly USD 11. Sizing by lots would treat those as comparable; sizing by notional and by the distance an adverse move can travel would not. The trading calculator shows notional and margin for any lot count on any coin at the live price.
Nothing above indicates which position to take or when. It describes why two positions that look symmetrical on a ticket are not symmetrical in the market.
Frequently Asked Questions
Why do altcoins fall more than bitcoin?
Because the same selling pressure meets a thinner order book, because leveraged altcoin positioning is more concentrated on the long side and liquidates into that thin book, and because far fewer buyers are willing to absorb a drawdown in an altcoin than in bitcoin. The three effects compound during fast declines.
What is bitcoin dominance and why does it rise when prices fall?
Bitcoin dominance is bitcoin's share of total cryptocurrency market capitalisation. It rises during declines because altcoins lose a larger percentage of their value than bitcoin does, which mechanically increases bitcoin's share. CoinGecko records it moving from 69.5 percent at the start of 2021 to 38.2 percent at year end, then back above 60 percent in April 2025.
Do altcoins always follow bitcoin?
No. The tendency is strong during market-wide moves, when the impulse comes from outside crypto and propagates from the deepest instrument downward. It weakens or inverts when a coin has its own catalyst, and it reversed across most of 2021, when altcoins outperformed bitcoin for the majority of the year.
Is holding an altcoin CFD more expensive than holding a bitcoin CFD?
Not in published financing terms at Vanto. All 13 cryptocurrency CFDs carry the same published swap of -16.56 long and +4.08 short per lot, the same contract size of one coin, and no triple swap day. The cost difference between positions comes from the size of the position and from the spread on each instrument, not from a different financing rate per coin.
Why is crypto leverage capped at 1:10 when forex is 1:500?
The cap reflects the volatility of the underlying asset class. At Vanto the maximum is 1:10 on all cryptocurrencies, 1:100 on indices and energies, and 1:500 on forex and metals. The same 1:10 figure applies to bitcoin and to every altcoin, so the platform does not distinguish between coins on leverage.
Did ether fall more than bitcoin on 5 August 2024?
Yes. Reported moves for that session put bitcoin down around 19 percent and ether down around 25 percent, with bitcoin trading as low as roughly USD 49,000 and ether as low as roughly USD 2,100, after the Bank of Japan's 31 July rate rise triggered a broad unwind of yen-funded carry positions across global markets.
Trade Crypto CFDs With Full Specifications on Vanto
The difference between bitcoin and everything below it is a difference in market depth, and it shows up as position risk rather than as a cost line. For the instruments and how they are constructed, see crypto CFD trading, how to trade Bitcoin and how to trade Ethereum. For the mechanics that decide position size, see what is minimum lot size in trading and what is leverage in trading. For the macro unwind behind the August 2024 session, see why Japanese stocks rise when the yen falls and carry trade explained. Live crypto spreads, swaps and margin are in the trading calculator, and a demo account lets you compare how two coins behave in the same session without risking capital.
Risk warning. Trading securities, futures, options, and contracts for differences are complex financial instruments that require knowledge and understanding. Prices can fluctuate significantly and securities may become valueless. Investors may incur losses exceeding the potential for profits. Trading on margin can result in losses greater than the amount initially deposited. Past performance is not necessarily a guide to future performance. The information in this article is for educational purposes only and does not constitute investment advice, a recommendation, or an offer to buy or sell any financial instrument. Consider whether CFD trading is appropriate for your circumstances and seek independent advice if necessary.