What is a bull market?
A bull market is a sustained period of rising prices, usually defined as a gain of 20% or more from a recent low in a broad index such as the S&P 500. It comes with high investor confidence, strong buying and generally rising asset prices. Bull markets happen in stocks, bonds, property and crypto, and they tend to last longer than bear markets.
What is a bull market?
A bull market refers to a market where prices keep climbing for months or years, not just a few good days. The 20% rule of thumb is the usual threshold: once an index has risen 20% from its last low and keeps going, most financial markets call it a bull market.
A bull market occurs when more people want to buy than sell, and they expect prices to keep rising. That positive investor sentiment can come from real improvements, such as strong economic growth, or from excitement that runs ahead of the facts.
Why is it called a bull market?
The common explanation is how the animals attack. A bull thrusts its horns upward, while a bear swipes its paws down. So a rising market is a bull market, and a falling one is a bear market.
What causes a bull market?
Bull markets usually start when the economy improves, money is cheap and investors feel optimistic. The causes overlap and feed each other:
- Economic growth and economic expansion. Rising output, falling unemployment and increased consumer spending lift company sales.
- Rising corporate earnings. Strong corporate earnings and corporate profits justify higher stock prices.
- Low interest rates. When central banks cut rates, savings and fixed income securities pay less, so more money flows into shares and other risky assets.
- Economic recovery after a crisis. Many bull markets begin at the bottom of a downturn, when prices are low and economic data starts to improve.
- New money and new technology. Fresh investors, institutional investors entering a market, or a big new idea can inflate asset prices quickly.
In crypto, bull markets have often followed the Bitcoin halving, new types of products and waves of media attention. Some people talk about a “four-year cycle”, but past market cycles are no guarantee of future market direction.
What does a bull market look like?
A bull market looks like steady gains with short dips that get bought quickly. You’ll usually see these signs:
| Sign | What happens | Why it matters |
|---|---|---|
| Sustained price increases | Indexes and prices rise over months | The trend is up, not just a bounce |
| High investor confidence | Good news lifts prices, bad news is shrugged off | Market sentiment is optimistic |
| More initial public offerings | Companies list on the stock market to raise money | Firms take advantage of high prices |
| Rising trading volume | More people trade and open accounts | New money keeps flowing in |
| Market corrections | Short drops of about 10% that recover | Normal pauses inside the uptrend |
Experienced investors also watch for late-stage warning signs: prices rising much faster than earnings, borrowed money piling up, and people with no investing experience promising quick gains.
Historical examples of bull markets
Bull markets historically have lasted longer than bear markets, and some have run for years. A few well-known examples:
- The post-World War II boom. US stocks rose for many years as the economy grew after the war.
- The 1980s and 1990s. A long bull market driven by falling inflation, economic reforms and, later, the internet boom.
- 2009 to 2020. After the 2008 financial crisis, US stocks rose for more than a decade, the longest recorded bull market for the S&P 500, until the 2020 pandemic crash.
- Crypto bull runs. Bitcoin and other coins saw huge rallies in 2013, 2017 and 2020–2021, each followed by a deep fall.
The Dow Jones Industrial Average and the S&P 500 are the indexes most often used to date these periods in the US. In Europe, broad indexes such as the STOXX Europe 600 play the same role.
What is a crypto bull market?
A crypto bull market, or bull run, works like a stock bull market but faster and more extreme. Prices can rise several times over in a year, many coins hit a new all-time high, and small coins rise most. The flip side is that crypto bull markets have also ended with falls of 70% or more for Bitcoin and worse for most altcoins.
Bull market vs bear market: the difference
The difference between a bull and a bear market is direction and mood. Bull and bear markets alternate, and investors who understand both make calmer investment decisions.
| Bull market | Bear market | |
|---|---|---|
| Price trend | Rising, 20% or more from a low | Falling, 20% or more from a high |
| Investor behavior | Optimistic, buying | Fearful, selling |
| Economy | Often growing | Often slowing or in an economic slowdown |
| Typical risk | Overpaying, FOMO, too much leverage | Panic selling at the bottom |
How to invest in a bull market
The best way to invest in a bull market is to stick to a plan you made before prices took off. Rising markets make everyone feel clever, which is exactly when mistakes get expensive.
Keep investing regularly
Dollar cost averaging, investing a fixed amount every month, works in rising and falling markets. You don’t need to guess when the bull market ends, and you avoid putting all your money in at the top.
Rebalance your diversified portfolio
A bull market quietly changes your risk. Say you start with €10,000: €8,000 in a stock fund and €2,000 in crypto (80/20). If the crypto doubles, you now have €8,000 and €4,000, so crypto is a third of your €12,000. To get back to 80/20, you’d sell €1,600 of crypto and move it into the stock fund, leaving €9,600 and €2,400. Rebalancing locks in some gains and keeps a diversified portfolio across asset classes.
Watch out for FOMO and leverage
Momentum investing, buying what’s already rising, can work for a while, but FOMO pushes many people to buy late and borrow to buy more. Leveraged positions can be wiped out by a normal market correction. Most retail traders lose money with leverage. A take-profit plan, decided in advance, helps you sell part of a position when prices rise.
Why bull markets matter to you in the EU
For EU investors, a bull market brings two risks beyond prices: tax and scams. Investing involves risk in every market, but these two grow when prices rise.
- Tax on gains. In Germany, gains on crypto sold within a year are taxable, while crypto held for more than a year can generally be sold tax-free. In the Netherlands, box 3 taxes a notional return on the value of your assets on 1 January, so a strong year raises next year’s tax base.
- Scams and unlicensed platforms. Rising markets bring fake platforms, pump-and-dump schemes and promises of fixed high returns. Only use crypto platforms with a MiCA licence, which you can check in the ESMA register.
Past performance is no guide to future market performance, and no bull market lasts forever.
Key takeaways
A bull market is a long stretch of rising prices driven by economic growth, cheap money and investor optimism. It’s the time when investing feels easy, which is why discipline matters most: keep investing regularly, rebalance, avoid leverage, and remember that every bull market so far has eventually been followed by falling prices.
Related terms
Questions people ask
Why is it called a bull market?
The usual explanation is the way a bull attacks: it thrusts its horns upward. A bear swipes its paws downward, so falling markets are called bear markets and rising markets bull markets.
Is it better to buy in a bull or bear market?
Prices are lower in a bear market, so long-term buyers get more for their money, but nobody knows exactly when one market turns into the other. Investing a fixed amount every month works in both and removes the guesswork.
How long does a bull market typically last?
There's no fixed length. Stock bull markets have lasted from months to more than a decade; the US bull market after the 2008 financial crisis ran from 2009 to early 2020. Crypto bull runs have usually been shorter and far more extreme.
What is the difference between a bull and a bear market?
A bull market is a long period of rising prices, usually 20% or more from a low, with optimistic investors. A bear market is the opposite: a fall of 20% or more from a high, with pessimism and selling.
What is a bull run in crypto?
A bull run is crypto slang for a strong, fast rise in prices across the market, often led by Bitcoin and followed by altcoins. Bull runs attract many new buyers, and they have often ended in sharp falls.