07/24/2026

10 min read

Bull markets explained: phases, strategies, and risks

Green numbers in your portfolio, a renewed sense of optimism on the exchanges, and almost daily reports of record prices: bull markets bring exactly the momentum investors may have waited months to see. Amid the general euphoria and rapidly growing demand, however, investors face a particular challenge: How can you take advantage of favorable conditions without taking poorly considered risks? Long-term investors need to tune out emotional swings and understand that even strong upward periods follow a recurring market cycle.

This guide takes a close look at bull markets. You will learn which mechanisms drive them, what the greatest booms in financial history can teach us, and how the extreme cycles of the crypto market differ from those of traditional markets. You will also find practical approaches for managing your portfolio with discipline and a clear strategy during strong market periods.

Meaning: The term “bull market” describes a period in which market prices rise by 20% or more from their most recent low over several months.
Duration: A bull market lasts about 2.7 years on average, considerably longer than a bear market, which is defined as a prolonged period of falling prices.
Drivers: Common causes of an upward trend include low interest rates, solid economic growth, rising corporate earnings, and technological innovation.
Strategies: Buy and hold, dollar-cost averaging, diversification, and regular rebalancing can help you approach bull markets with a long-term plan.

Bull market definition: What is a bull market?

A bull market, also known as a bull run, is an extended period of rising prices in financial markets. Its opposite is a bear market, which describes a prolonged period of falling prices.

In a bull market, broad market indexes rise by at least 20% from their previous low, and the upward trend continues for several months. Growing demand, rising corporate earnings, and a healthy appetite for risk support this market phase. Investors buy because they expect prices to keep rising, and that confidence drives the upward trend further.

Where do the terms bull market and bear market come from?

The animal symbolism dates back to the 17th and 18th centuries. A bull thrusts its horns upward from below, making it a symbol of rising prices. A bear, by contrast, swipes its paws downward from above, symbolizing falling prices.

Characteristics of a bull market

No single signal confirms that a bull market has begun. Instead, it becomes apparent through a combination of indicators. The most important signs of a rising market include:

A sustained upward trend: Over several months, the market records a continuous series of higher highs and higher lows.
Growing market momentum: Rising prices coincide with stronger demand and increasing trading volume on days when prices rise.
Strong fundamentals: Solid economic growth, falling unemployment, and rising corporate earnings can support an upward stock market trend.
Optimistic market sentiment: Indicators such as the Fear and Greed Index reflect strong investor confidence and growing euphoria.
Low price volatility: Market volatility tends to decline, often reflected in a low VIX Index reading. The VIX measures expected volatility in the US stock market.

These signals may be strong indicators of a bull market, but they never guarantee that prices will continue rising indefinitely. Markets do not move in one direction forever. Even during a healthy bull market, you should expect temporary corrections of 5% to 15%. Such movements are entirely normal and do not automatically mean that a new bear market has begun. Instead of being unsettled by them, view them as part of the market cycle.

The four phases of a bull market

A bull market rarely progresses at a steady pace. It typically passes through four distinct phases, each with different levels of sentiment, trading volume, and asset valuations. Understanding these phases within the wider market cycle can help you assess your investment decisions and act more strategically.

1. The accumulation phase

The accumulation phase comes first. The market has passed its low, but many investors remain skeptical after the preceding bear market or have withdrawn completely. Meanwhile, experienced investors use historically low valuations to begin building positions. Prices usually move sideways during this phase or rise only slightly.

This is also when a bull trap may occur. An apparent upward breakout attracts buyers into the market, only for prices to reverse abruptly shortly afterward. Investors who enter too hastily may suffer losses if the price falls back below the resistance level it had just broken. A clear investment plan and avoiding impulsive purchases during brief price spikes are the only potential safeguards against this risk.

2. The public participation phase

The upward trend becomes clear during the second phase. Economic data improves, corporate earnings increase, and more investors enter the market. Prices rise steadily, trading volume grows, and the general public begins to notice the recovery. Optimism replaces the earlier skepticism.

3. The maturity phase

The maturity phase occurs in the middle or later part of a bull market. Sentiment remains consistently positive, and new all-time highs become common, but asset valuations are now significantly higher. The pace of price growth usually slows, and temporary corrections occur more often. New investors may still find opportunities during this phase, provided they account realistically for the increased risk.

4. The euphoria phase

The cycle ends with the euphoria phase. Market sentiment and valuations reach extreme levels, while fear of missing out on further gains drives prices sharply higher. Most market participants begin to ignore risk.

Less experienced retail investors commit more capital during this late phase, while institutional and strategic investors may begin taking profits gradually. If liquidity declines and demand collapses, the trend may reverse and a bear market may begin.

Why do bull markets occur?

Bull markets do not develop by chance. They arise when several drivers work together. Economic conditions, monetary policy, corporate performance, and public sentiment generally need to move in the same direction for a sustainable upward trend to develop. The following factors have appeared in almost every major historical recovery.

Capital becomes cheaper when central banks keep their benchmark interest rates low. Companies can finance investments more easily, consumers use more credit, and investors increasingly turn to stocks and other riskier assets when fixed-income investments offer low returns. This increases demand and pushes prices higher.
Low interest rates after the financial crisis were a major driver of the 2009 to 2020 bull market. High inflation can have the opposite effect by forcing central banks to raise interest rates, potentially triggering a change in the market trend.
Major technological advances have helped drive entire bull markets. The rise of the internet supported the technology boom of the 1990s. Smartphones, cloud computing, and social media contributed to the recovery that began in 2009. In the 2020s, artificial intelligence and cloud infrastructure have influenced market cycles.
In crypto, the Bitcoin halving creates a supply shock roughly every four years and has historically initiated a bull market. During this automatic process, the reward paid to miners, and therefore the number of newly created bitcoins, is cut in half. If demand remains steady or increases, this reduced supply can create a significant scarcity effect.

Historical stock bull markets

Looking at the major recoveries of the past can help you understand bull market dynamics. Historical data shows that prolonged upward periods are not random but are usually supported by economic or technological developments.

The table below lists five of the longest and highest-return bull markets in the S&P 500 since World War II:

Bull market	Period	Duration	Total S&P 500 return

Other indexes followed a similar pattern. During the technology boom of the 1990s, the technology-heavy Nasdaq 100 gained more than 2,000%, significantly outperforming the broader market. Such periods may produce exceptional returns for growth stocks, but these stocks can also face above-average risk during the market correction that follows.

Bull markets and crypto

Crypto bull markets follow the same basic principles as traditional stock markets: demand rises, investors become more optimistic, and prices establish a clear upward trend. However, crypto volatility is significantly higher, and its market cycles are usually shorter.

The crypto market also has a unique fundamental driver in the Bitcoin halving. Historical data indicates that these recurring reductions in supply have reliably preceded major crypto bull markets, often called bull runs, during which prices have experienced above-average cyclical increases.

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Historical crypto bull markets

Since Bitcoin launched in 2009, the crypto market has passed through three major bull markets. Each had its own character, from the retail-driven ICO hype of 2017 and the first institutional bull run in 2021 to the ETF and halving cycle from 2023 to 2025.

The 2017 boom

Bitcoin traded at about $1,000 at the start of 2017. By December, it had reached its first major all-time high of almost $20,000, an increase of roughly 2,000% in one year.

The so-called ICO boom helped drive this rise. During this period, numerous new crypto projects raised money from investors through initial coin offerings, while retail investment also surged. In the downturn that followed, Bitcoin fell to about $3,350.

The institutional bull run of 2020 to 2021

A new cycle began after Bitcoin’s third halving in May 2020. Bitcoin approached $65,000 in April 2021 and reached an all-time high of about $69,000 in November 2021.

Unlike in 2017, significant institutional capital entered the market for the first time during this period. Companies such as MicroStrategy and Tesla built Bitcoin positions, and the idea of Bitcoin as “digital gold” gained wider acceptance.

The 2023 to 2025 halving bull run

In January 2024, the US Securities and Exchange Commission approved spot Bitcoin ETFs for the first time. Bitcoin’s fourth halving followed in April 2024. Both events drove the market higher: Bitcoin reached about $89,000 in November 2024 and later passed $100,000. Regulatory milestones shaped this cycle more than any previous one.

Other cryptocurrencies followed the same broad pattern. Ethereum rose from about $8 to around $800 in 2017, then approached $4,900 during the 2021 bull run. However, past price performance is never a reliable indicator of future results.

Crypto history makes one thing clear: the markets never sleep, and preparation for the next market phase begins now. If you want not only to observe bull and bear market dynamics but also to use them actively in your investment strategy, you need suitable tools and up-to-date market analysis.

What drives crypto bull markets?

Four factors appear in every major crypto recovery:

Mass adoption: When established companies accept cryptocurrencies as payment or hold them on their balance sheets, demand for the relevant coins and tokens can rise significantly.
Regulatory clarity: Approvals such as spot Bitcoin ETFs and clear European regulations such as MiCA reduce uncertainty and open the market to institutional capital.
Institutional interest: Asset managers, pension funds, and large companies invest in cryptocurrencies, supporting the market and adding trading volume.
Bitcoin halving: Mining rewards are cut in half every four years. The reduced supply meets existing demand and has historically initiated a crypto bull market.

Risks in crypto bull markets

Before investing during a crypto bull market, you should understand the specific risks of this volatile market. Even within a strong upward trend, daily price swings of 10% or more are not unusual. Deeper corrections of 20% to 30% during a bull run have also been historically normal. Investors who lose their nerve during these declines often sell based on emotion instead of following their strategy.

Previous cycles also show that every major crypto bull market has been followed by a severe, prolonged bear market. Declines of 70% to 85% from the all-time high have not been unusual during past downturns. The risk-reward ratio can help you systematically compare potential returns with your actual loss potential before entering a position.

How can you benefit from a bull market?

A bull market can create attractive opportunities, provided you invest according to a plan rather than being carried away by the surrounding euphoria. The following strategies have been used for decades and can apply to both stocks and crypto.

Buy and hold as a basic strategy

Buy and hold is the simplest strategy: purchase assets and keep them for the long term, regardless of short-term price changes. The benefits include compounding and avoiding the difficulty of trying to time the market. An investor who simply held the S&P 500 from 2009 to 2020 earned a total return of about 400%.

Using dollar-cost averaging

With dollar-cost averaging, you invest a fixed amount regularly, regardless of the current price. You buy fewer units when prices are high and more when prices are low. The result is a more consistent average purchase price, less timing risk, and greater discipline. Recurring savings plans for stocks, ETFs, or cryptocurrencies follow this principle.

Diversifying across asset classes

Even during a bull market, concentrating all your money in one investment can lead to disproportionately large losses during the next correction. Spreading investments across stocks, bonds, precious metals, crypto ETFs, and cryptocurrencies can reduce concentration risk and add stability to a portfolio. You can find more information in our article “Portfolio diversification.”

Sector rotation and contrarian investing

Not all sectors perform equally throughout a bull market. Cyclical sectors such as technology and consumer goods often perform particularly well during the early phases. Defensive sectors such as utilities and healthcare may become more prominent later in the cycle.

Investors who identify this pattern early may use sector rotation to pursue additional returns. Contrarian investing involves deliberately buying selected assets during corrections within the broader bull market.

Profit-taking and rebalancing

As prices rise, the weight of each holding in a portfolio changes. If one position gains far more than the others, it may begin to dominate the portfolio—along with the risks associated with that individual asset.

Regular rebalancing restores the target allocation by taking some profits from assets that have risen sharply and moving the money into positions that have lagged. In a crypto portfolio, an investor might move part of a strongly performing holding into stablecoins or another asset class to restore the portfolio’s original risk profile.

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Conclusion: Approach a bull market with strategy, not euphoria

Bull markets can be among the most rewarding periods in financial markets. Understanding the underlying mechanisms and the four market phases can help you pursue returns without losing emotional control during the euphoria phase.

Buy and hold, dollar-cost averaging, broad diversification, and regular rebalancing can provide a foundation for a long-term plan. Equally important for long-term success is the willingness to assess risk honestly at all times rather than blindly chasing every short-term market trend.

Frequently asked questions about bull markets

Below are answers and explanations for some of the most common questions about bull markets.

There is no reliable way to predict the exact start of the next Bitcoin bull market. Historically, these upward periods have been closely associated with the Bitcoin halving, which occurs every four years. The next halving is expected in spring 2028.
However, the timing of a bull market does not depend on the halving alone. Regulatory developments, global interest rates, and the level of institutional interest can all play an equally important role in market behavior. Past price performance is never a reliable indicator of future results.
To determine whether the current market is bullish or bearish, examine broad market indexes over several months. A bull market is generally defined as a rise of at least 20% from the latest low, with prices remaining above major moving averages such as the 200-day moving average.
A decline of 20% or more from the latest all-time high generally signals the beginning of a bear market. Sentiment measures such as the Fear and Greed Index can provide additional information about investor attitudes and possible market overheating.
Historically, stocks in growth sectors, especially technology, have produced some of the strongest returns during rising markets. The Nasdaq 100, for example, gained more than 2,000% during the technology boom of the 1990s.
Cryptocurrencies often record even larger percentage gains during bull markets, but their volatility is also considerably higher. The most suitable asset class depends on your personal risk profile and investment horizon.
A commonly cited principle for the end of an upward cycle is to avoid emotion-driven panic selling. If your investment strategy has a long time horizon, it may make sense to follow your existing plan and continue scheduled investments with discipline.
If you took profits gradually during the bull market, the resulting cash reserves may also help you manage the market transition with greater confidence.