Bull Market Explained
What is it?
A bull market is a sustained period during which stock prices, and therefore equity mutual fund NAVs, are broadly rising — typically defined as a rise of 20% or more from a recent low, sustained over months or years. It's driven by optimism about economic growth, corporate earnings, and future prospects, which encourages more buying, which in turn pushes prices further up.
Why should you care?
Bull markets are when most investors feel confident and see their portfolios grow, but they're also when the behavioural traps of greed and FOMO (see Level 6) are strongest — because everything is going up, it's easy to mistake a rising market for a low-risk one, when in fact valuations and risk are often building up beneath the surface.
Real-life example
The Indian equity market entered a strong bull phase from the 2020 COVID-19 lows through 2021, with the Nifty 50 more than doubling from around 7,500 in March 2020 to over 18,000 by October 2021. Investors who had continued their SIPs through the crash captured this entire recovery and rally; investors who had exited near the bottom missed most of the bull run that followed.
Common mistakes
- Assuming a bull market will continue indefinitely and increasing risk (e.g. moving to more aggressive funds) purely because recent returns have been strong.
- Treating a bull market as confirmation that a specific fund choice was skillful, when broad market gains lift most equity funds regardless of individual selection.
- Waiting for a bull market to "confirm" itself before investing, which usually means missing the early, strongest phase of the rally.
Typical investor behaviour in a bull market: helpful vs. harmful
| Behaviour | Effect |
|---|---|
| Continuing SIPs at a steady pace | Captures the rally without over-concentrating risk |
| Increasing risk because "everything is going up" | Raises exposure right when valuations may be stretched |
| Reviewing asset allocation and rebalancing periodically | Locks in some gains, keeps risk aligned to goals |
FAQ
How long do bull markets typically last?
There's no fixed duration — historically, Indian equity bull markets have lasted anywhere from under a year to several years, and their length isn't predictable in advance, which is one reason trying to time an exit near the top is difficult.
Should I invest more during a bull market?
Increasing investments purely because the market is rising, rather than because your income or goals have changed, is a common bias (see Fear vs Greed) — it's generally better to follow a pre-set investment plan than to chase the current trend.
What comes after a bull market?
Bull markets are typically followed by a correction, a bear market, or a period of consolidation — markets move in cycles, and no bull run has historically continued forever without some pullback.
Is a bull market the same as a bubble?
Not necessarily — a bull market reflects genuine improving fundamentals and earnings growth, while a bubble is when prices rise far beyond what fundamentals justify, driven mainly by speculation. Bull markets can, but don't always, turn into bubbles in their later stages.
See this concept applied to your own portfolio
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