Bull Markets, Bear Markets and Corrections

What the Terms Actually Mean

Three phrases dominate headlines whenever stock prices move sharply: bull market, bear market, and correction. Each one refers to a specific size of move measured from a peak or a trough — but they are conventions, not laws. No exchange or regulator officially declares them; analysts and journalists apply the labels after the fact.

A correction is a decline of at least 10% from a recent high. A bear market is a decline of at least 20% from a recent high. A bull market is a sustained rise of 20% or more from a recent low, typically following a bear market. The 10% and 20% thresholds are the most widely cited, but some analysts use slightly different numbers — which is another reminder that these are useful shorthand, not precise science.

The underlying concept tying all three together is the drawdown — the percentage fall from a peak to any lower point. A drawdown of 10% triggers the correction label; one of 20% or more earns the bear market name. Tracking drawdowns lets readers see exactly how far a market or index has fallen from its highest point, regardless of what label gets applied.

Where the Names Come From

The exact origins of "bull" and "bear" are disputed, but a few folk explanations have stuck around long enough to be worth knowing. One theory links them to the way each animal attacks: a bull thrusts its horns upward, a bear swipes its claws downward. Another traces "bear" to 18th-century fur traders who sold bearskins before they had caught the bear — an early form of short selling, betting on prices falling.

Whatever the true etymology, the imagery is durable. Bulls charge forward and upward; bears lumber and drag things down. Financial writers latched onto those images centuries ago, and the terms have been standard ever since. They are metaphors first, market definitions second.

Corrections: The Normal Disruption

A correction — that 10%-or-more pullback — tends to feel alarming when it is happening but unremarkable once prices recover. Historically, markets have experienced corrections fairly regularly, even during long bull runs. They can be triggered by anything from a weak economic data release to a shift in risk-on / risk-off sentiment across global markets.

Corrections are often short. Prices may recover within weeks or a few months. But — and this is the uncomfortable part — while a correction is underway, nobody knows with certainty whether it will stop at 12% or keep falling to 30%. That uncertainty is precisely what makes markets feel so stressful during a downturn.

One useful thing to watch during a correction is volatility. When prices fall quickly, volatility typically spikes, meaning daily price swings become larger and less predictable. Elevated volatility can reflect genuine uncertainty about where prices are headed, or it can reflect forced selling by investors who borrowed money to buy stocks — a dynamic sometimes called a liquidation cascade.

Bear Markets: Deeper and Longer

When a decline crosses the 20% threshold, the bear market label officially applies. Bear markets tend to be more painful than corrections for a simple reason: by the time prices have fallen 20%, sentiment has usually shifted from cautious to genuinely fearful. Media coverage intensifies, and the economic backdrop often — though not always — has started to deteriorate.

Economists often read a bear market as a signal worth taking seriously. A steep, prolonged fall in stock prices can reflect (or cause) tightening financial conditions, reduced corporate investment, and weakening consumer confidence. The connection to the real economy runs in both directions: a bad economy can drag stocks lower, and cratering stocks can make the economy worse by reducing household wealth and corporate access to capital.

Different sectors of the stock market behave differently in a bear market. Cyclical stocks — companies whose fortunes rise and fall with the economy, like carmakers or luxury goods firms — typically fall harder. Defensive stocks — utilities, consumer staples, healthcare — tend to hold up better because demand for their products doesn't disappear just because the economy slows.

Bear markets have historically been shorter than bull markets, but they are sharper. The losses that take years to accumulate in a gradual decline can sometimes arrive in a matter of weeks. The oil-price shock of 2020, when equity markets globally fell into bear territory in a matter of days, illustrated how fast modern markets can reprice risk when genuinely new information arrives.

Bull Markets: Long, Slow and Easy to Underappreciate

A bull market is the recovery and expansion that follows a low point. The 20%-rise-from-the-bottom definition means bull markets, by construction, begin right after the darkest moment — which is usually when pessimism is still at its peak and few people feel like celebrating.

Bull markets have historically lasted considerably longer than bear markets. Prices can grind higher for years, punctuated by smaller corrections that don't reach the 20% threshold. During extended bulls, volatility tends to be lower, trading volumes can thin out, and market moves often feel routine even as the cumulative gains become substantial.

One subtle point: bull markets include corrections. A market that rises 150% over a decade almost certainly experienced several 10–15% pullbacks along the way. Those corrections did not end the bull market — they were part of it. This is why short-term price moves need to be read in the context of longer-term trends, something the day/week/YTD/YoY percentage columns on data pages are designed to help with.

The Hindsight Problem: Tops and Bottoms Are Invisible in Real Time

Here is the humbling truth about all these labels: they are backward-looking. A bear market is only confirmed after prices have already fallen 20%. A bull market is only confirmed after prices have already risen 20%. Nobody rings a bell at the top or the bottom.

Consider what this means in practice. Suppose a stock index falls 10%. That is a correction — but is it about to recover, or is it the beginning of a bear market? At 10% down, there is no way to know. At 15% down, there is still no way to know. The bear market label only arrives after the damage is done.

The same logic applies to bottoms. The lowest point of a bear market — the moment when buying would have been most rewarding in retrospect — looks like just another bad day when it is actually happening. It is surrounded by negative headlines, weak data, and falling prices. Only months later, when prices have recovered enough, does the bottom become visible on a chart.

Traders typically watch for signals like improving breadth (more stocks rising than falling), declining volatility, or stabilizing economic data to suggest a bottom may be forming — but none of these signals is a guarantee.

This hindsight problem is why analysts describe markets in probabilistic and historical terms rather than definitive ones. It is also why the tools used to read price charts focus on patterns and tendencies rather than certainties.

Reading Market Phases in the Data

When tracking an index on a data page, a few reference points help place the current level in context.

• All-time high (ATH): The highest price ever recorded. The percentage gap between today's price and the ATH is the current drawdown from peak.
• 52-week high and low: A narrower window often shown alongside live prices, useful for judging recent momentum without going back years.
• Year-to-date (YTD) return: How much the index has moved since January 1. A large negative YTD in a short period is an early warning sign worth watching.
• Year-over-year (YoY) return: Compares today's level to the same date one year ago, smoothing out short-term noise.

You can see these figures in context for global indexes on the stocks overview page. The economic calendar is also worth checking alongside price data, since corporate earnings reports and major economic releases frequently act as catalysts for sharp moves in either direction.

The "typical duration" column reflects broad historical patterns, not a forecast for any specific market. Every cycle is different, shaped by the economic conditions, policy responses, and sentiment of its own era.