Why Time In The Market Beats Trying To Time The Market

The urge to get out before markets fall—and back in before they rise—feels logical. The data says otherwise.

Every investor eventually faces the same temptation. Markets turn volatile, headlines grow alarming, and the idea of stepping aside “just until things settle down” starts to feel less like fear and more like prudence. The problem is that market timing requires getting two decisions right in sequence—when to exit and when to re-enter—and research consistently shows that most investors get at least one of them wrong. Often both.

What works far more reliably over long periods is simpler and considerably less exciting: stay invested, keep costs low and let compounding do the work time allows it to do.

Index Investing vs. Active Management: The Numbers

The case for staying invested in low-cost index ETFs rather than chasing active management is not a matter of opinion—it is well-documented across decades of data. Most actively managed funds fail to outperform their benchmark index after fees over long time horizons. The SPIVA scorecards, published annually by S&P Dow Jones Indices, have demonstrated this consistently across Canadian and global markets for years.

The reasons are structural. Active funds charge higher fees. Trading costs reduce returns. And beating the market consistently—not once, not for a few years, but across full market cycles over decades—is genuinely difficult, even for professional managers with research teams and institutional resources. Index ETFs sidestep this problem entirely by aiming to match market performance at a fraction of the cost.

The data below compares average annual returns for a simple index portfolio against the average actively managed fund across five-year periods from 1990 to 2024:

The gap is consistent across every period shown—including the ones that included significant market disruptions. That consistency is the point. It is not that index investing wins every year. It is that the structural advantages of low costs and broad diversification tend to compound in your favour over time.

The Hidden Cost Of Fees

The fee difference between index ETFs and actively managed funds looks modest on paper. In practice, it is one of the most significant financial decisions a long-term investor makes.

Actively managed funds in Canada typically charge management expense ratios between 1.5 and 2.5 percent annually. Broad-market index ETFs often charge less than 0.5 percent. That gap may not feel meaningful in year one. Over thirty years on a growing portfolio, it is transformative.

That is a difference of more than $515,000 — driven almost entirely by fees, not performance. The index investor did not need to be smarter, luckier or more disciplined. They simply paid less. For a deeper look at how this math plays out across different portfolio sizes, our post on how cutting investment fees can add $100,000+ to your retirement portfolio walks through the numbers in detail.

The Real Cost Of Missing The Market’s Best Days

The argument for market timing usually goes something like this: if you can avoid the worst days, you come out ahead. The problem is that you cannot avoid the worst days without also risking the best ones—and the best days tend to cluster immediately after the worst ones, when fear is highest and the temptation to stay in cash is strongest.

The data on this is striking. Missing just ten of the market’s strongest days over a thirty-year period can reduce a fully invested portfolio by hundreds of thousands of dollars:

Missing ten days—out of roughly 7,500 trading days over thirty years—reduces the ending portfolio value by more than $400,000. Missing thirty days cuts it by more than half compared to staying fully invested.

This is why selling during a downturn is so damaging to long-term outcomes. It is not just the losses you lock in on the way down—it is the recovery you miss on the way back up. And recoveries, historically, happen faster than most investors expect.

For a closer look at the behavioural side of this, our post on what to do when markets are down covers exactly how disciplined investors approach volatility differently.

Compounding Rewards Patience Above Everything Else

The mathematical case for staying invested is compelling. The behavioural case is even more important. Compounding is not complicated—it is simply growth building on prior growth, repeated over long periods. But it only works if you let it. Every time you exit the market and re-enter, you interrupt the process. Every year you wait to start, you give up growth that cannot be recovered later.

Time is the variable that matters most in long-term investing, and it is the one variable that cannot be bought back. A 25-year-old who begins investing consistently has an advantage over a 35-year-old that no amount of contribution rate or fund selection can fully replicate. For investors earlier in their journey, our post on five things young Canadian investors should learn early covers the foundational principles that make the most difference over time.