A market trend is a perceived tendency of the to move in a particular direction over time. Analysts classify these trends as secular for long time-frames, primary for medium time-frames, and secondary for short time-frames. Traders attempt to identify market trends using technical analysis, a framework which characterizes market trends as predictable price tendencies within the market when price reaches support and resistance levels, varying over time.
A future market trend can only be determined in hindsight, since at any time prices in the future are not known. This fact makes market timing inherently a game of rather than a certainty. Past trends are identified by drawing lines, known as trendlines, that connect price action making higher highs and higher lows for an uptrend, or lower lows and lower highs for a downtrend.
In a secular bull market, the prevailing trend is "bullish" or upward-moving. The United States stock market was described as being in a secular bull market from about 1983 to 2000 (or 2007), with brief upsets including Black Monday and the Stock market downturn of 2002, triggered by the crash of the dot-com bubble. Another example is the 2000s commodities boom.
In a secular bear market, the prevailing trend is "bearish" or downward-moving. An example of a secular bear market occurred in gold from January 1980 to June 1999, culminating with the Brown Bottom. During this period, the market price of gold fell from a high of $850/oz ($30/g) to a low of $253/oz ($9/g). The stock market was also described as being in a secular bear market from 1929 to 1949.
Generally, bull markets begin when stocks rise 20% from their low and end when stocks experience a 20% drawdown. However, some analysts suggest a bull market cannot happen within a bear market.
An analysis of Morningstar, Inc. stock market data from 1926 to 2014 revealed that, on average, a typical bull market lasted 8.5 years with a cumulative total return averaging 458%. Additionally, annualized gains for bull markets ranged from 14.9% to 34.1%.
A decline of 10% to 20% is classified as a correction.
Bear territory always precedes a bear market. Typically, as a market enters bear territory, there are indicators other than a correction. The Cboe Volatility Index (VIX), a key measure of market volatility, increases, indicating heightened investor anxiety. Additionally, consumer sentiment drops, with expectations for unemployment rising and economic outlooks declining. Most recently (as of April 12, 2025), in April 2025, the United States stock market entered bear territory. The S&P 500 Index declined over 20% from its recent peak, meeting the technical definition of entering bear territory. This downturn is primarily attributed to escalating trade tensions and tariff policies under the Trump administration, which have led to significant market volatility and investor uncertainty. Ultimately, when a market enters bear territory, it almost always leads that stock market into a bear market.
Bear markets conclude when stocks recover, reaching new highs. The bear market is then assessed retrospectively from the recent highs to the lowest closing price, and its recovery period spans from the lowest closing price to the attainment of new highs. Another commonly accepted indicator of the end of a bear market is indices gaining 20% or more from their low.
From 1926 to 2014, the average duration of a bear market was 13 months, accompanied by an average cumulative loss of 30%. Annualized declines for bear markets ranged from −19.7% to −47%.
According to William O'Neil, since the 1950s, a market top is characterized by three to five distribution days in a major stock market index occurring within a relatively short period of time. Distribution is identified as a decline in price with higher volume than the preceding session.
The peak of the U.S. stock market before the 2008 financial crisis occurred on October 9, 2007. The S&P 500 closed at 1,565 and the NASDAQ at 2,861.50.
Identifying a market bottom, often referred to as 'bottom picking,' is a challenging task, as it's difficult to recognize before it passes. The upturn following a decline may be short-lived, and prices might resume their descent, resulting in a loss for the investor who purchased stocks during a misperceived or 'false' market bottom.
Baron Rothschild is often quoted as advising that the best time to buy is when there is 'blood in the streets'—that is, when the markets have fallen drastically and investor sentiment is extremely negative.
Supply and demand dynamics vary as investors attempt to reallocate their investments between asset types. For instance, investors may seek to move funds from government bonds to 'tech' stocks, but the success of this shift depends on finding buyers for the they are selling. Conversely, they might aim to move funds from 'tech' stocks to government bonds at another time. In each case, these actions influence the prices of both asset types.
Ideally, investors aim to use market timing to buy low and sell high, but in practice, they may end up buying high and selling low. Contrarian investors and traders employ a strategy of 'fading' investors' actions—buying when others are selling and selling when others are buying. A period when most investors are selling stocks is known as distribution, while a period when most investors are buying stocks is known as accumulation.
"According to standard theory, a decrease in price typically leads to less supply and more demand, while an increase in price has the opposite effect. While this principle holds true for many assets, it often operates in reverse for stocks due to the common mistake made by investors—buying high in a state of euphoria and selling low in a state of fear or panic, driven by the herding instinct. In cases where an increase in price leads to an increase in demand, or a decrease in price leads to an increase in supply, the expected negative feedback loop is disrupted, resulting in price instability. This phenomenon is evident in bubbles or market crashes.
When an extremely high proportion of investors express a bearish (negative) sentiment, some analysts consider it to be a strong signal that a market bottom may be near. David Hirshleifer observes a trend phenomenon that follows a path starting with under-reaction and culminating in overreaction by investors and traders.
Indicators that measure investor sentiment may include:
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