A bull market is an extended period of rising prices, conventionally defined as a gain of 20% or more from a recent low, and the opposite of a bear market that continues rather than fading. In crypto the definition is looser and the moves are larger, so traders tend to identify one by its structure instead: each rally sets a higher high, and each pullback stops above the previous low.
Bull markets are also when the most money is lost. That sounds contradictory until you notice that the largest number of new buyers arrive closest to the top.
Where the name comes from
A bull attacks by driving its horns upward, which is the explanation everyone gives. More likely it comes from 18th-century London trading slang, where "bear" described a trader selling stock they did not own, and "bull" emerged as its natural opposite.
The phases of a crypto bull market
Not a law, and the boundaries are only clear afterwards. But the sequence has been consistent enough across cycles to be worth knowing.
Accumulation. Prices stop falling and move sideways after a long decline. Volume is low, attention is gone, and the people buying are doing so quietly. This phase is invisible while it is happening, because nothing about it looks like the start of anything.
Early markup. Price breaks above the range. Gains are real but coverage is thin, and most people who left during the bear market have not come back.
Public participation. The longest and largest phase. Prices make sustained new all-time highs, mainstream coverage returns, and new participants arrive in volume. Capital rotates outward from Bitcoin into larger altcoins and then into smaller ones.
Euphoria. Expectations detach from anything measurable. Price predictions escalate, leverage builds across the system, and projects with no product raise substantial money. Warnings get dismissed as failures to understand the new environment.
Distribution. Prices stop making new highs but hold near them. Early buyers sell into continued optimism. On a chart this looks like consolidation, and it is frequently mistaken for a pause before the next leg up.
Crypto's bull markets
| Cycle | Bitcoin trough to peak | Approximate duration |
|---|---|---|
| 2013 | $13 to $1,163 | About 12 months |
| 2015 to 2017 | $152 to $19,783 | About 24 months |
| 2018 to 2021 | $3,122 to $68,789 | About 24 months |
| 2022 to 2025 | $15,476 to $126,296 | About 34 months |
Bitcoin's most recent peak, $126,296, was set on 6 October 2025.
Across those cycles the pattern holds: each bull market has produced a smaller percentage gain than the one before it, while lasting longer. Roughly what you would expect as an asset grows: moving a large market requires far more capital than moving a small one.
What drives a bull market
- Liquidity conditions. Falling interest rates and expanding money supply push capital toward risk. This has been the strongest single correlate across crypto cycles.
- The halving narrative. Bitcoin's supply issuance halves roughly every four years, and the three cycles following the 2012, 2016, and 2020 halvings each produced a major advance. Whether the halving causes this or coincides with liquidity cycles is unsettled.
- New access routes. The approval of US spot Bitcoin ETFs in January 2024 opened a channel for institutional capital that had no practical way in before.
- A dominant narrative. Each cycle has had one. 2017 had initial coin offerings, 2021 had NFTs and DeFi, and the most recent had institutional adoption.
- Reflexivity. Rising prices generate coverage, coverage brings buyers, buyers raise prices. The loop is real and runs in reverse just as efficiently.
How capital rotates through a cycle
Historically, money has moved down the risk curve in a recognizable order, which is why traders talk about being "early" or "late" to a particular part of the market.
- Bitcoin first. New capital entering crypto has typically arrived through Bitcoin, as the largest and most liquid asset with the clearest story.
- Ethereum next. Profits rotate into the second-largest asset and the base layer for most applications.
- Large altcoins. Established projects with real usage and deep liquidity.
- Small caps. Money spreads into smaller tokens, where the same capital produces much larger percentage moves.
- Back to Bitcoin, or out entirely. Capital consolidates when risk appetite contracts.
Bitcoin dominance, which measures Bitcoin's share of total crypto market cap, is the number traders watch to track this. Falling dominance while total market cap rises has historically signalled rotation outward.
Then the 2024 to 2025 advance broke the pattern. ETF capital entered Bitcoin and largely stayed there, because an institutional allocator buying a regulated Bitcoin product is not going to rotate that position into a small-cap token. Dominance stayed structurally higher than in previous cycles, and the broad altcoin season that veterans expected never fully arrived. The sequence above describes what happened before, not a mechanism that has to repeat.
Warning signs near the end
Only afterwards are tops confirmed, and anyone claiming to call one in advance is guessing with confidence. That said, late-stage conditions have looked similar across cycles.
- Leverage building across the system, with funding rates staying high for weeks at a time
- Sentiment readings pinned in extreme greed for weeks
- Assets with no product or usage rising as fast as assets with both
- Price predictions becoming the main topic of discussion
- New participants arriving in volume, often people who explicitly avoided crypto before
- Prices stalling while positive news keeps arriving, which is usually the clearest structural signal
What a bull market does not tell you
- Where it is in the sequence. The phases are legible in hindsight and ambiguous in real time. Euphoria feels like public participation from the inside.
- Whether gains reflect anything. Rising prices during a bull market are largely a function of capital flow. An asset with real usage and one without can perform identically.
- How much of it is beta. Almost everything rises together in a bull market, which makes it very difficult to distinguish skill from exposure.
- When it ends. The four completed cycles ran between 12 and 34 months. That range is too wide to plan around.
Bull market vs bear market
| Bull market | Bear market | |
|---|---|---|
| Price structure | Higher highs, higher lows | Lower highs, lower lows |
| Volume | Rising, new participants arriving | Declining, attention leaving |
| Failed moves | Dips that get bought quickly | Rallies that give the gains back |
| Sentiment | Optimism moving toward euphoria | Fear, apathy, and eventually silence |
| Typical duration in crypto | Twelve to thirty-four months | Around twelve months to a trough |
Where mb.io fits
Conditions change through a cycle. The venue underneath your assets should not.
mb.io is a regulated crypto spot exchange backed by MultiBank Group, a financial institution founded in 2005 that serves more than 2 million clients across 100+ countries.
- Regulated by VARA in the UAE and AUSTRAC in Australia
- 10/10 security score from Hacken, an independent blockchain security auditor
- Institutional-grade MPC custody powered by Fireblocks, with segregated client funds
- Spot only, so you own what you buy and there are no positions to liquidate
- Buy, sell, and swap in three steps, from sign-up to purchase
- 24/7 customer support, on web and on the iOS and Android apps
Open your account and start trading on mb.io.
Frequently asked questions
How long do crypto bull markets last?
Between roughly 12 and 34 months from trough to peak, across Bitcoin's four completed bull markets, with the most recent being the longest. That range is wide enough that duration alone offers little guidance.
What starts a bull market?
Historically, easing liquidity conditions combined with a supply or access catalyst. The clearest examples are the three halvings in 2012, 2016, and 2020, and the approval of US spot Bitcoin ETFs in January 2024.
How do I know if we are in a bull market?
Structurally, by higher highs and higher lows on rising volume. In practice the answer is only clear well into the trend, and frequently only after it has ended.
What is the difference between a bull market and a bull run?
A bull market is the whole extended uptrend, often measured in years. Inside it, a bull run usually describes a shorter, sharper move measured in weeks or months.
Why do people lose money in bull markets?
Because participation peaks near the top. Arriving after the largest gains have already happened, the biggest wave of new buyers is left exposed to the drawdown that follows.
Does every bull market end with a crash?
All four completed crypto cycles have ended in declines between 77% and 93%. That is a consistent record, and four cycles is a small sample from which to draw a rule.
What is distribution?
The phase where prices stay high but stop advancing, while early buyers sell into continued optimism. On a chart it looks like consolidation, which is why it is usually mistaken for a pause rather than an ending.
