A bull market is a sustained period of rising prices and optimism, while a bear market is a prolonged, broad decline—commonly defined as a drop of roughly 20% or more from recent highs—accompanied by widespread pessimism.
Few pieces of financial vocabulary are used as often, or explained as rarely, as “bull” and “bear.” They appear in headlines, fund commentary and casual conversation, yet many people are unsure exactly what they describe. This explainer sets out what each term means, how the boundaries are drawn, what tends to drive the shifts, and what the labels do—and do not—tell ordinary savers. The following is general information, not financial advice.
What do “bull” and “bear” actually mean?
At its simplest, a bull market is one in which prices across a market are broadly and durably rising, while a bear market is one in which they are broadly and durably falling. The words capture mood as much as maths: bull markets are associated with confidence, rising demand and a willingness to take on risk, whereas bear markets carry caution, fear and a rush toward safety.
The most popular origin story holds that a bull thrusts its horns upward, mirroring climbing prices, while a bear swipes its paws downward, mirroring a fall. Historians disagree on the precise roots of the phrases, but the imagery has stuck and the direction each animal represents is now universally understood in finance.
How is a bear market usually defined?
Because “rising” and “falling” are vague, market watchers rely on rough numerical conventions. The most widely cited is that a bear market begins once a major index falls about 20% or more from a recent peak and stays down, rather than snapping back within days. A smaller decline of around 10% is generally labelled a correction, and day-to-day wobbles are simply volatility.
These thresholds are conventions, not rules enforced by any authority. The U.S. Securities and Exchange Commission, through its Investor.gov education service, describes such terms as widely used shorthand rather than legal definitions. That is worth remembering: two analysts can look at the same market and disagree about whether a “bear market” has technically arrived.
| Feature | Bull market | Bear market |
|---|---|---|
| Price direction | Broadly rising | Broadly falling |
| Common threshold | Sustained gains from a low | Roughly 20%+ below recent high |
| Investor mood | Optimism, risk appetite | Caution, fear |
| Typical backdrop | Growth, steady confidence | Uncertainty, weak outlook |
What causes markets to turn?
Markets reflect the collective expectations of millions of buyers and sellers, so turning points rarely have a single cause. Bull markets often coincide with a healthy economy, rising company earnings and accommodative financial conditions. When investors expect the good times to continue, they bid prices higher.
Bear markets tend to take hold when that confidence cracks—perhaps because of a weakening economy, a shock to a major industry, rising borrowing costs, or a broad reassessment of how much future profits are worth. The Federal Reserve and other central banks influence this backdrop through interest-rate policy, which affects how expensive it is to borrow and how attractive safer assets look. None of these forces moves in a straight line, and the mood can shift faster than the underlying economy does.
How long do the phases last?
There is no fixed clock. Historically, bull phases have tended to run longer than bear phases, but the range is wide and every cycle is different. Some downturns have been short and sharp; others have ground on for a long stretch. Anyone claiming to know precisely when the next turn will come is guessing, however confident they sound. This uncertainty is exactly why long-horizon investing strategies, such as those explained in our plain-English guide to index funds, emphasise time in the market over attempts to time it.
What do the labels mean for ordinary investors?
For someone saving steadily for a distant goal, the bull-or-bear label is less important than it appears. Prices rise and fall, but a diversified, long-term plan is built to ride through multiple cycles. The danger lies in emotional reactions: buying eagerly near the top of a bull market because everyone else is optimistic, or selling in panic near the bottom of a bear market and locking in losses.
Behavioural research repeatedly finds that investors who trade frequently in response to headlines tend to fare worse than those who stay disciplined. That does not mean ignoring your finances—it means having a plan suited to your goals and timeline, and revisiting it deliberately rather than reactively. For broader context on how economic conditions ripple across borders, our world coverage tracks the events that often move sentiment, and you can find more money explainers in the money section.
Common misconceptions
A frequent mistake is treating a bull market as a guarantee that prices will keep climbing, or a bear market as proof they will keep falling. Both phases end, often when least expected. Another is assuming the labels apply to your personal portfolio: a market-wide bear does not mean every asset is falling, and a bull does not mean every holding is thriving. Finally, some people conflate a bear market with a recession. They often overlap, but they are different things—one measures asset prices, the other measures the real economy—and either can occur without the other.
Do the terms apply beyond the stock market?
Although “bull” and “bear” are most closely associated with shares, the language is applied to many markets—bonds, commodities, currencies and property among them. A “bull market in gold” or a “bear market in oil” simply signals a sustained rise or fall in that particular asset. The same cautions apply: the label describes a broad trend, not a promise about what comes next, and different observers may date the turning points differently.
It is also common to hear people described as “bullish” or “bearish” on a specific company, sector or even the economy as a whole. In that usage the words express an outlook—optimistic or pessimistic—rather than an official market condition. Recognising this looser, everyday sense helps you read financial commentary without over-interpreting it.
Why the labels can mislead
Perhaps the most useful thing to understand is that these tidy categories describe the past far better than they predict the future. A market is only confirmed as a bull or a bear once a trend is already well established, which means the label often arrives long after the move began. Acting on the name alone—piling in because headlines declare a bull market, or fleeing because they declare a bear—can mean reacting to a phase that is already maturing. That is why financial educators such as the SEC’s Investor.gov service, FINRA and central banks consistently steer people toward long-term plans rather than trend-chasing.
Frequently asked questions
What percentage decline defines a bear market?
By the most widely used convention, a bear market is a drop of about 20% or more from a recent peak in a major index, sustained over time rather than a single bad day. A milder pullback of roughly 10% is usually called a correction. These thresholds are conventions, not official laws, so different commentators may draw the lines slightly differently.
Why are they called bulls and bears?
The common explanation is that a bull attacks by thrusting its horns upward, symbolising rising prices, while a bear swipes downward, symbolising falling prices. The exact origin is debated and the terms have been used in finance for centuries. What matters is the direction they now represent.
How long do bull and bear markets last?
There is no fixed length. Historically, bull markets have tended to last longer than bear markets, but durations vary widely from one cycle to the next. Because the future is uncertain, no one can reliably predict when a given phase will begin or end.
Should I sell everything in a bear market?
This is general information, not financial advice, and the right choice depends on your goals, timeline and risk tolerance. Many long-term investors focus on their plan rather than reacting to short-term swings, but decisions about your own money are best discussed with a licensed professional. Selling during a decline can lock in losses that a later recovery might have reversed.
