Part 3 — Markets
Chapter 16 of 40
Bull Markets, Bear Markets, Everything In Between
What defines each, how long they last, and what to actually do
"A bear market is not a crash. A correction is not a bear market. A recession is not a market. These distinctions matter because they determine whether you should panic, hold, or quietly buy more."
For educational purposes only. Nothing in this chapter is financial advice. All figures are illustrative examples. Tax rules, account types, contribution limits, and regulations differ by country and change over time. Always verify current rules with official government sources or a qualified financial adviser before making any investment decisions.
What These Terms Actually Mean
These terms are used loosely in financial media. Here are the precise definitions that professionals use:
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Bear Market
A decline of 20% or more from a recent high, sustained over at least 2 months. Signals a broad, sustained downturn — not just a bad week.
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Correction
A decline of 10–20% from a recent high. Normal, expected, and happens roughly every 1–2 years. Not a bear market.
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Bull Market
A rise of 20% or more from a recent low, sustained over time. Often defined as a market that has risen 20% after a 20% decline.
Historical Data: What to Actually Expect
The asymmetry matters enormously. Bull markets last roughly 4.5 years and gain 154% on average. Bear markets last roughly 10 months and lose 36%. Over any long period, investors who stay invested capture the gains of many bull markets and recover from many bear markets. Investors who sell during bear markets lock in the losses and typically miss the recovery.
What to Actually Do During a Bear Market
This is where most investment advice gets vague. "Stay the course" is technically correct but not very useful when you are watching your portfolio fall 35% over six months. Here is more specific guidance:
During a bear market, in order of priority:
✓ Do not sell your diversified long-term holdings
Unless you need the money in the next 1-2 years, selling locks in a permanent loss. Every bear market in history has been followed by a recovery. You do not lose if you do not sell.
✓ Continue your regular contributions
If you invest monthly, keep investing. You are buying more units at lower prices — this is pound-cost averaging working in your favour. The shares you buy in a bear market are the ones that generate the largest gains in the subsequent bull market.
✓ Check your cash buffer
Make sure your emergency fund (3-6 months expenses) is intact and in cash. Having accessible cash means you are not forced to sell investments to cover a crisis.
✓ Consider tax-loss harvesting
In a taxable account, selling a loss-making position to offset gains elsewhere can generate a tax benefit. This requires care and professional advice to avoid wash-sale rules.
✓ Do not check your portfolio daily
Watching numbers fall is psychologically damaging and encourages bad decisions. If your time horizon is 10+ years, a 30% fall today is irrelevant to your outcome.
Questions People Actually Ask
How do I know if we are in a bear market?
The official definition is a 20% decline from the most recent high, sustained over at least two months. You will know — financial media will tell you. The more useful question is: does it matter to my investment strategy? For a long-term investor, the answer is usually no. The strategy (buy diversified funds, contribute regularly, hold for decades) does not change because of a label.
What causes bear markets?
Bear markets are caused by a combination of: rising interest rates (makes future earnings worth less today and makes borrowing more expensive), recessions (company earnings fall), financial crises (2008), or external shocks (pandemic 2020). Often multiple factors combine. The trigger is usually identifiable in hindsight but difficult to predict in advance. This is why market timing is so difficult — you need to be right twice (when to sell and when to buy back).
Should I buy more during a bear market?
If you have surplus cash, a bear market is a reasonable time to invest it — you are buying at lower prices. The psychological difficulty is that bear markets feel like the world is ending, and more declines always seem possible. In practice, investors who increase contributions during bear markets tend to significantly outperform those who reduce or stop contributions. The caveat: only invest money you will not need for 5+ years.
What is the longest bear market in history?
The 1929 crash and subsequent Great Depression saw the Dow Jones fall roughly 89% over nearly three years (1929–1932), and it took until 1954 to fully recover in nominal terms. This is the extreme outlier. The 2000–2002 dot-com bear market lasted about 2.5 years. Most bear markets since World War II have lasted under 18 months. The 2020 COVID crash was the shortest bear market ever — approximately 33 days.
What is a "market cycle"?
A market cycle is the pattern of bull markets followed by bear markets, repeating over time. One full cycle (peak → trough → new peak) has historically taken 3–7 years. Understanding that cycles are inevitable and normal is the foundation of long-term investing psychology. Investors who understand cycles remain calm during bear markets because they know — with near certainty based on 100+ years of data — that a bull market follows.
Key Takeaways
- A bear market is a 20%+ decline sustained over at least 2 months. A correction is 10–20%. They are different things — corrections are routine, bear markets are rarer but also normal.
- Historically: bull markets last ~4.5 years and gain ~154% on average. Bear markets last ~10 months and lose ~36%.
- Every bear market in recorded history has been followed by a recovery. Investors who sold during declines locked in losses and typically missed the recovery.
- During a bear market: do not sell long-term holdings, continue monthly contributions, ensure your cash emergency fund is intact.
- Market timing requires being right twice — when to sell and when to buy back. Most investors who try to time the market underperform those who simply hold through the cycle.