Is 'Your Age in Bonds' a Good Investing Rule? Rick Ferri Weighs In

What You Need to Know

It’s a good conversation starter but not an approach that works for most clients, especially wealthy ones, the CFA says.
Even wealthy investors are often unsure how to allocate assets and afraid to spend.
When a client asks about a rule of thumb, Ferri suggests, help them unpack what their financial goals really are.

Taking to the social media platform X earlier this week, Rick Ferri offered up a leading question for the contemplation of his fellow financial professionals: “Is your-age-in-bonds a useful portfolio rule of thumb?”

The rule in question states that investors should direct a percentage of their portfolio toward bond investments that approximates their age, making regular adjustments toward safer assets over time to account for their shortening time horizon ahead of retirement or some other big financial goal. Thus, the rule would suggest that a 30-year-old should hold 70% in stocks and 30% in bonds, while a 60-year-old would have 40% in stocks and 60% in bonds.

Ferri, the founder and CEO of Ferri Investment Solutions and a chartered financial analyst, stipulated in the extended post that he was “just thinking out loud” and welcomed other points of view. His own answer, though, is a pretty firm “no” — at least not for the vast majority of the wealthy clients that typical financial professionals serve.

“I think such rules are designed for the ‘average’ investor or retiree,” Ferri wrote. “But who is average? According to a 2023 survey by the Transamerica Center for Retirement Studies, median baby boomer households reported about $289,000 in retirement savings. I probably would recommend a high allocation to safe assets if a 65-year-old retiree with this amount in savings asked.”

But what if a 65-year-old retiree had $2.89 million in savings? Or even $28.9 million?

“Those are far greater than the $289,000 median,” Ferri pointed out. “Is the age-in-bonds rule useful for these people? My view is not as much for the first person — and not at all for the second.”

As Ferri and other commenters emphasized, different circumstances in the real world require different mindsets on asset allocation, such that clients with 10 times the median savings level require a hard look at the balance between spending in retirement and growing legacy assets. Those with 100 times the median, obviously, can focus even more on legacy, usually resulting in more growth assets.

In a follow-up conversation with ThinkAdvisor, Ferri said these dynamics are further complicated by clients’ behavioral tendencies, especially what he sees as a surprisingly common reluctance to spend confidently and fully enjoy one’s accumulated wealth after a lifetime of working and living below one’s means. This is why the job of the advisor is more than just dollars and cents, Ferri emphasized, and it is beholden on planners to keep such factors in mind while working with individual clients.

A Common Client Question

Ferri, who prides himself on his hourly approach to financial advice, said the motivation for his post came from the daily conversations he has with clients.

“Given my model, I speak with probably five or six individuals a day, and over time I get to talk to a lot of people about their financial situation,” Ferri explained. “One of my clients brought up the age-in-bonds rule just a few days ago, in fact. I hear about it a lot.”

In this particular case, Ferri noted, the client was a man in his early 40s who has been very successful at accumulating wealth, with a net worth around $5 million.

“So this is a guy who is doing great, financially speaking, but he had read on the internet about this rule and naturally assumed he needed to follow the ‘normal pattern’ of moving away from stocks,” Ferri said. “People who do their own retirement planning research online see this messaging all the time. It’s how target-date funds are designed, for example, and it’s really baked-in throughout in the industry. As you get closer to retirement, you should get more conservative.”

Ferri said that may be true for individuals at the median who face a genuine possibility of running short of funds in retirement and who don’t have big legacy-giving goals, but the spectrum of people who are trying to make sense of this rule of thumb goes way beyond that.