Not Staying the Course

Quick definition: Not staying the course means abandoning a passive investing plan during market downturns or periods of underperformance, typically by reducing risk, raising cash, or switching strategies; this is the single most costly mistake passive investors make because selling during downturns locks in losses at the precise moment when markets are most attractive.

The financial mistakes discussed in previous articles of this chapter—frequent rebalancing, leveraged ETFs, thematic ETFs, and so forth—are all costly. But they pale in comparison to the damage caused by the most fundamental passive investing mistake: not staying the course during market downturns.

Market history is littered with investors who executed a sound passive investing plan for years, then abandoned it in panic during a market crash, selling at the worst possible moment and locking in losses. This behavioral failure is not a technical mistake; it is a discipline failure. And it is more costly than any fee or tax mistake could ever be.

Key Takeaways

• Market downturns are temporary but panic selling is permanent; an investor who sells at the bottom of a crash locks in losses at the exact moment when future returns are most attractive
• Historical data shows that investors who reduced equity exposure during major downturns and failed to reinvest subsequently missed the strongest recovery periods, resulting in permanently lower wealth
• The emotional pain of market declines is real, but the strategy of holding or buying during declines is not emotionally comfortable; this discomfort is precisely what separates investors who succeed from those who fail
• Dollar-cost averaging and continuing contributions during downturns are among the most powerful wealth-building strategies available, but they require discipline to execute when sentiment is most negative
• A coherent investment plan, written and reviewed before market stress occurs, is the best insurance against panic selling; investors who have not thought through how they will respond to a 30% decline will not respond well when one occurs

The Historical Cost of Panic Selling

The evidence on the cost of panic selling is unambiguous. Investors who sold during major market crashes—1987, 2000-2002, 2008-2009, 2020, and others—and failed to reinvest quickly missed the subsequent recoveries.

The 2008 financial crisis offers a clear example. The U.S. stock market fell from a peak in October 2007 to a low in March 2009, a total decline of approximately 57%. Many investors panicked during this period. Some sold everything and raised cash to "wait for the bottom." Some reduced equity exposure and shifted to bonds. Some suspended their monthly investment contributions, believing the market "could go lower."

An investor who held a 60/40 stock-bond portfolio through the entire decline would have experienced approximately a 27% decline at the worst point (stocks down 57%, bonds up due to flight-to-safety dynamics). This was painful. But the investor continued to own stocks as they recovered.

The subsequent recovery was swift and powerful. By late 2009, the stock market had risen 60% from the March 2009 low. By 2010, it was higher than the pre-crisis peak. An investor who held through the entire period would have recovered all losses and achieved positive returns by 2010, relatively quickly.

But an investor who sold everything in March 2009 (the low point) and raised cash to "wait for a better opportunity" faced a choice:

• Reinvest in April 2009 and capture most of the subsequent recovery
• Hold cash and continue to "wait" for another decline

In practice, many investors who sold at the low felt relief from the action (even though it was wrong), and they delayed reinvestment. They told themselves "I'll reinvest when the market falls again." But the market did not fall again; it rose steadily for over a decade. The investor who sold at the low and then delayed reinvestment missed the entire recovery, a decision that cost hundreds of thousands of dollars or more in foregone wealth.

This pattern repeats in every market crash. Investors make the mistake of not staying the course, and they suffer permanently lower wealth as a result.

The Mathematics of Selling Low and Buying High

The cost of panic selling can be quantified mathematically.

Assume an investor with $100,000 begins a passive portfolio in January 2000 and commits to a $500 monthly contribution regardless of market conditions. The investor's plan is to hold a diversified portfolio and contribute consistently through all market cycles.

If the investor stays the course through the 2000-2002 bear market and the 2008-2009 financial crisis, contributing regularly even as portfolios decline, they accumulate more shares at lower prices. This dollar-cost averaging accelerates wealth accumulation when markets are depressed.

By 2020, a disciplined investor who held through all downturns and continued contributions would have accumulated substantial wealth, far more than a starting $100,000.

But if the investor panics during a major decline—say, 2008-2009—and stops contributions or raises cash, they miss the opportunity to buy assets at depressed prices. Then, if they delay reinvestment for years while waiting for a "better opportunity," they miss the recovery entirely.

Simulations based on historical market data show that the cost of missing the 10 best days in the stock market from 2000 to 2020 was catastrophic. An investor who stayed fully invested captured all the best days (which occurred during or shortly after major downturns). An investor who raised cash and delayed reinvestment missed many of the best days, reducing final wealth by 30% to 50% compared to the disciplined investor.

The best days in the market occur during recoveries, when sentiment is still negative but prices have already bottomed. Investors who raise cash during downturns and stay in cash during recoveries miss these powerful days.

Why Staying the Course Is Difficult

The reason staying the course is so difficult is not intellectual; it is emotional.

When the stock market falls 30%, 40%, or 50%, the pain is severe. Your portfolio, which was supposed to be building wealth, is now smaller. If you are near retirement, the decline threatens your timeline. If you are accumulating, the decline creates the psychological sense that you "should have sold earlier."

News media amplifies this pain by running constant "market crash" coverage. Financial commentators offer predictions of further declines. Your friends and family discuss their fears. The emotional environment is designed to reinforce the panic response.

In this environment, holding a passive portfolio and continuing to contribute takes tremendous discipline. It is not comfortable. The disciplined response—staying the course—feels wrong because it conflicts with the emotional signal that "something is wrong, you should do something."

But this discomfort is precisely the reason staying the course works. If staying the course were comfortable, everyone would do it. The fact that it is emotionally difficult is the reason it is so rewarding—it separates those who execute the strategy from those who fail.

The Role of an Explicit Written Plan

The best defense against panic selling is to develop an explicit written investment plan before market stress occurs.

The plan should clearly state:

• Your target asset allocation (e.g., 70% stocks, 30% bonds)
• Your rebalancing policy (e.g., rebalance annually if allocations drift more than 5%)
• Your response to market downturns (e.g., continue all planned contributions, do not reduce equity exposure, consider increasing contributions if income allows)
• The time horizon for your plan (e.g., not less than 10 years)
• Your goals (e.g., build $X by retirement)

The purpose of this written plan is to serve as an anchor during emotional times. When the market has fallen 30% and you feel the panic response rising, you can read your written plan and remind yourself that you anticipated this scenario and decided in advance how to respond. The decision is already made. All you need is discipline to execute it.

Without a written plan, decision-making during market stress is left to emotion. With a written plan, decisions can be made on principle, developed during calm times when thinking is clear.

Reducing Equity Exposure vs. Staying Disciplined

Some investors respond to the difficulty of staying the course by reducing equity exposure—moving from, say, a 70/30 stock-bond portfolio to a 50/50 or 40/60 portfolio to reduce volatility and pain.

This approach is understandable but often backfires. Reducing equity exposure is appropriate if your circumstances have genuinely changed (e.g., you are nearing retirement) or if you realize your risk tolerance was initially misjudged. But reducing equity exposure in response to a down market is a mistake.

Here's why: if you reduce equity exposure at a market low, you lock in the loss on those equity shares and shift the proceeds to bonds, which will likely underperform stocks during the subsequent recovery. You have essentially sold low and bought high (bonds near their peak valuations while stocks are near their lows).

An investor who genuinely cannot tolerate 70% equity exposure emotionally should have started with a more conservative allocation. But once an allocation is chosen, changing it in response to short-term market movements is typically destructive.

The appropriate response to emotional difficulty is not to change the allocation, but to strengthen discipline and coping mechanisms. This might include:

• Reviewing the written plan monthly to reinforce commitment
• Avoiding financial news and stock market commentary during periods of high volatility
• Focusing on factors within your control (saving rate, expenses, career) rather than market performance
• Speaking with a financial advisor or counselor about the emotional aspects of the decline

The Opportunity Cost of Raising Cash

Many investors who panic during downturns do not sell completely; instead, they raise cash by stopping contributions or moving a portion of their portfolio to cash or money market funds.

The intention is often to "wait for a better opportunity" or "buy the dip." But in practice, these investors usually fail to reinvest when the opportunity arrives.

Research on investor behavior shows that investors who raise cash during downturns tend to remain in cash for months or years after markets have begun recovering. The emotional pain of seeing the portfolio decline is so severe that even after prices have begun rising, investors cannot bring themselves to reinvest. They tell themselves "I'll reinvest when things settle down" or "I'll wait for a bit more confirmation."

By the time they do reinvest, the recovery is well underway and they have missed the best of it.

The solution is simple: do not raise cash during downturns unless you have specific, pressing financial needs. Assume the cash you raise during a downturn will remain in cash for years and will be a permanent drag on returns. With this mindset, you will rarely choose to raise cash.

Dollar-Cost Averaging: Accelerating Wealth During Downturns

The counterpart to staying the course is dollar-cost averaging: continuing regular contributions through all market cycles, including downturns.

This is perhaps the most powerful wealth-building strategy available to individuals. When the market falls 30%, and you continue your $500 monthly contribution, you are buying shares at 30% discounts. Over the subsequent recovery, these discounted shares appreciate dramatically, accelerating wealth accumulation.

An investor who can maintain employment income and continue contributions through multiple market downturns will accumulate far more wealth than an investor who interrupts contributions during downturns.

This requires confidence that your income is stable and will continue through the downturn. For those with such confidence, continuing contributions is a powerful wealth accelerator.

How to Strengthen Your Discipline

Several practical steps can strengthen discipline and help you stay the course:

Automate contributions: Set up automatic transfers from your paycheck to your investment account. The automation removes the temptation to pause contributions during downturns.

Reduce portfolio monitoring frequency: Check your portfolio quarterly or annually, not daily. Daily monitoring increases emotional reactivity.

Avoid financial news during volatility: News media is optimized for engagement, not for wealth building. During market downturns, news is uniformly negative and designed to trigger fear. Avoiding it during downturns reduces emotional stress.

Work with a disciplined advisor: An investment advisor can help you stay the course by reminding you of your plan and the reasons for it during emotional times. The advisor serves as a behavioral coach, not primarily as a generator of investment ideas.

Review your plan in writing: Periodically review your written investment plan to reinforce your commitment and reasoning.

The Paradox of Staying the Course

A paradox exists in passive investing: the best way to achieve long-term returns is to not try to optimize short-term decisions.

The investor who tries to time market entry and exit, who raises cash when nervous and reinvests when confident, typically underperforms the investor who adopts a fixed plan and stays the course regardless of market conditions.

The reason is that market timing is exceptionally difficult. Consistently predicting short-term market movements is nearly impossible. The odds of making correct timing decisions repeatedly are poor.

By contrast, staying the course requires no market timing ability. It requires only discipline. Over decades, discipline beats market timing ability.

A Mermaid Diagram: The Cost of Not Staying the Course

Next

The next article examines a foundation-level mistake: failing to establish an emergency fund before investing, leaving yourself vulnerable to forced selling during downturns.