Episode summary
Roger Ibbotson Made a 50-Year Market Forecast. It Was Surprisingly Accurate. How?
The Meb Faber Show
· · 42 min · Hosts: Meb Faber · Guests: Roger Ibbotson
Summary
Roger Ibbotson argues that the long-run story of markets is real, but the path is far more dangerous and uneven than most investors appreciate. Using more than a century of data, he says $1 invested and fully reinvested in large caps grew to 14,751, with small caps slightly better, but that most people never capture those gains because they consume income, pay taxes and fees, and fail to stay invested. He also stresses that total returns were historically undermeasured, so earlier market narratives based on price alone missed a key part of the story.
He revisits market timing, explaining that crashes and booms do not reliably predict what comes next, and that the biggest lesson is the difficulty of avoiding drawdowns while still participating in compound growth. On bonds, he describes the long cycle from falling yields to the high-inflation, high-yield era of the 1980s and then the recent period of rising rates, showing how inflation dominates fixed-income outcomes. He also defends buybacks as the modern form of shareholder payout and says the 1% dividend yield on the S&P 500 is misleading because payouts are still around 4% when buybacks are included.
Looking forward, Ibbotson says his long-horizon forecasts were surprisingly accurate in aggregate, but he is more cautious now. He expects U.S. equity returns to be lower when adjusted for global diversification and says the market is expensive by CAPE, though not in a way that makes timing easy. For young investors, he still recommends 100% stocks because human capital gives them room to take risk.
Key takeaways
- Roger Ibbotson says a dollar fully reinvested in large caps grew to 14,751, but taxes, fees, and consumption explain why most investors never realize that result.
- Ibbotson argues market timing remains extremely difficult because crashes and booms do not reliably forecast the next move.
- He says young investors should be 100% in stocks because their human capital makes them better able to withstand equity volatility.
- Ibbotson says bond returns were crushed when yields rose from the 1940s to 1980, then benefited when yields fell, and are weak again as yields rise.
- He argues buybacks should be treated as part of the payout stream, so equity cash distributions are still roughly 4% despite low dividend yields.
- He says his long-term forecast was broadly accurate, but current CAPE readings still imply expensive markets even if timing remains elusive.
Notable quotes
“Yes, $1 completely reinvested actually did grow to 14,751. So yes, it did grow to a tremendous amount”
“The answer is most people don't reinvest. They actually consume”
“I definitely recommend young people go 100% in stocks and their investment portfolio”
“The cape ratios would basically say the markets are way overvalued today. But they also said that in the mid '90s”
“Actually, it's pretty accurate. It was almost perfectly accurate out in nominal terms out to 2000”
How the episode opens
Yes, $1 completely reinvested actually did grow to 14,751. So yes, it did grow to a tremendous amount. The answer is most people don't reinvest.
They actually consume. It was 20% drop in one day, but actually for the year the total return 1987 was a slightly positive number. Most people in their lifetime are going to get hit badly at some point in these markets.
They forgot about the risk after the 1920s for then they got hit by the 1930s. The cape ratios would basically say the markets are way overvalued today. But they also said that in the mid '90s I definitely recommend young people go 100% in stocks and their investment portfolio.
What's up everybody? My guest today built the numbers the entire industry quotes for long-term returns data going back to 1926. My guest is none other than Roger Ibbitson, finance professor at the Yale Bulldogs for four decades, founder of Ibson Associates, chairman of Zebra Capital.
Roger, welcome to the show.
Great to be here.
I love the title to this book because it's something that is hard for humans, especially young people, to think out in terms of decades and think of these very large numbers. But, you know, we talk about a dollar a 100 years ago worth 15,000 in large caps, another 32,000 in small caps. But the natural question is why isn't everyone rich?
It seems so easy to do. Just in save a little money, make a little money, save a little money, invest, put it away. Voila.
The book I have is Exponential Wealth: Centuries of Stock and Pond Returns. It's $1 without any taxes or fees or anything. and completely reinvested. Actually did grow to it's 14,751. So yes, it it did grow to a tremendous amount.
From the episode’s captions: roughly the first two minutes, lightly cleaned. Keep watching on YouTube →
Topics
- centuries of stock and bond returns
- market timing challenges
- long-term valuation outlook
- inflation and nominal vs real returns
- young investor stock-only strategy
Watch the episode
Watch “Roger Ibbotson Made a 50-Year Market Forecast. It Was Surprisingly Accurate. How?” on YouTube
Summary, takeaways and quote selection by Octagon. Quotes are short excerpts; the full conversation is in the episode.
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