Why Consistent Fund Performance Is Overrated

“We just want something consistent.”

You’ll sometimes hear this said in investing circles. When it comes to picking funds, it might mean a strategy that consistently edges past its benchmark index. A solid, albeit unspectacular, performer that plods along year after year.

But appealing as that might sound, you probably shouldn’t seek consistency to begin with. It’s likelier to lead to disappointment than success.

Glass Half Full

Let’s go to the data, starting with the glass-half-full argument for consistency: More-consistent managers beat their indexes more often than less-consistent managers, if we define “consistent” as consecutive years of beating the benchmark index. That’s a fact.

To illustrate, here’s the percentage of funds that beat their bogies by their longest calendar-year winning streak, broken down by major asset class. The longer the winning streak, the likelier the fund was to outperform over the full 10-year period.

Not only that, the average fund’s excess return generally rose as the winning streak got longer, as shown below.

Improving odds and increasing payoff—what’s not to like?

Glass Half Empty

Well, that brings us to the glass-half-empty counterpoint: You’ll be hard-pressed to identify the most-consistent funds in advance. They don’t exactly grow on trees, as you can see from the following chart, which shows the distribution of funds by their longest winning streak.

All told, only 20% of funds had a winning streak of four-plus calendar years, and just 4% beat their bogy at least five straight years.

So, while you stand a much better chance of beating the benchmark with an uber-consistent performer, the reality is most funds are unable to amass such long winning streaks, making them that much harder to identify in advance.

It also misses the point: A fund doesn’t need to outperform like clockwork to succeed over the long haul. Consider that around 60% of stock and bond funds that topped their benchmark over the decade ended Dec. 31, 2025, didn’t have a win streak of more than three years.

Steady Wasn’t Superior

Even when you define “consistency” in a different way—say, based on the volatility of funds’ calendar-year excess returns—it has a tenuous relationship with performance. To illustrate, I sorted all US stock, international stock, and taxable bond funds into quartiles based on their 10-year excess returns as of Dec. 31, 2025. Then I calculated the average standard deviation of calendar-year excess returns for each quartile grouping.

The calendar-year excess returns of the best-performing stock funds (that is, top quartile) were almost as volatile as the worst-performing (that is, bottom quartile), and they were the most volatile of all among bond funds. The funds that exhibited the least volatile excess returns tended to have mediocre performance.

In case you were wondering, it also was the case that funds with longer winning streaks tended to exhibit more volatile calendar-year excess returns. That’s apparent in the chart below, in which I derived the average standard deviation of funds’ calendar-year excess returns based on their longest winning streak.

As previously mentioned, most funds didn’t have a win streak lasting longer than four consecutive calendar years. Among such funds, the volatility of calendar-year excess returns tended to rise, not fall, the longer the winning streak grew, as shown above.

Why might such a pattern arise? It could be that whatever conferred the winning streak in the first place—for instance, a fortuitous sector bet, factor tilt, or wager on a clutch of individual names—also courts risk, which expresses itself in the form of wide divergences from the index over shorter periods.

Conclusion

It’s a mistake to seek funds that will consistently outperform. While long winning streaks are associated with outperformance, it’s rare for funds to repeatedly top their indexes, making them hard to identify upfront.

Moreover, long-term winners often take a circuitous route to outperformance, perhaps topping their indexes over a span of a year or two, then lagging, only to resume their winning ways. That makes the quest to obtain consistent performance a bit of a red herring—you probably don’t need it to begin with.

Instead, investors would be better served focusing on the attributes that our research has found are more closely associated with long-term success—the prudence of a fund’s strategy; the depth, breadth, and continuity of its investment team; the investor-centricity of the sponsoring fund company; and, above all, fees.

For those not inclined to devote the time and energy attempting to uncover strategies that fit this description, indexing beckons.

Switched On

Here are other things I’m writing, reading, or listening to:

• More from me on fund performance: “Fast and Unsteady”
• Edit, edit, edit, as they say: “Seven Things I Don’t Own in My Portfolio” by Amy Arnott
• “Your Perfect Portfolio” by Cullen Roche (who was recently interviewed on The Long View podcast)
• “Jungle Prince”

Don’t Be a Stranger

I love hearing from you. Have some feedback? An angle for an article? Email me at jeffrey.ptak@morningstar.com. If you’re so inclined, you can also follow me on Twitter/X at @syouth1, and I do some odds-and-ends writing on a Substack called Basis Pointing.