Every year, the world's largest asset managers—BlackRock, JPMorgan, Vanguard, and others—publish documents predicting what they think stocks, bonds, and other assets will return over the next decade or two.
These predictions are called Capital Market Expectations, or CMEs.
If you're planning for retirement, these numbers matter more than you might think. They're the assumptions that professional financial planners use. They're what pension funds use to decide if they can meet their obligations. And they're almost certainly different from the numbers your retirement calculator is using.
Let's break down what CMEs are, where they come from, and why you should care.
Capital Market Expectations are forward-looking estimates of:
Unlike historical averages, which just look at what happened in the past, CMEs try to predict what will happen in the future based on current conditions.
Here's a simple example of the difference:
| Asset Class | Historical Average (1926-2024) | BlackRock CME (2024) |
|---|---|---|
| US Stocks | 10.2% | 6.5% |
| International Stocks | 8.1% | 7.2% |
| US Bonds | 5.2% | 4.8% |
| Cash | 3.3% | 3.5% |
Notice that the forward-looking estimates for stocks are significantly lower than historical averages. That's not pessimism—it's math, which we'll get to shortly.
The major publishers include:
BlackRock - The world's largest asset manager ($10+ trillion). They publish annual "Long-Term Capital Market Assumptions" (LTCMA) covering 20+ year horizons.
JPMorgan - Their annual LTCMA is one of the most widely cited in the industry. Covers 10-15 year forward estimates.
Vanguard - Known for conservative estimates. Their annual outlook tends to be on the lower end of projections.
GMO - Jeremy Grantham's firm, famous for contrarian (often pessimistic) forecasts based on mean reversion. They publish quarterly 7-year forecasts.
Research Affiliates - Rob Arnott's firm. They offer a free interactive tool showing their current expectations.
These aren't random guesses. Each firm employs teams of economists, strategists, and quantitative analysts to build these models.
While each firm has its own methodology, most CMEs are built on a common framework called the building block approach:
Expected Return = Dividend Yield + Earnings Growth + Valuation Change
Let's break that down:
That third component is why CMEs are lower than historical returns. Current stock valuations (measured by metrics like CAPE ratio) are historically high. Most models assume valuations will gradually normalize, which creates a headwind to returns.
Expected Return ≈ Current Yield
Bond math is simpler. If you buy a 10-year Treasury yielding 4.5%, your expected return over the next decade is... roughly 4.5%. There's not much mystery.
If you're using a retirement calculator that assumes 10% stock returns, you're probably overestimating your future wealth.
Consider a 30-year retirement projection:
| Assumption | $500K grows to... |
|---|---|
| 10% returns (historical) | $8.7 million |
| 7% returns (moderate CME) | $3.8 million |
| 5% returns (conservative CME) | $2.2 million |
Same starting point. Same timeframe. Wildly different outcomes.
Which assumption is "right"? Nobody knows. But if your retirement plan only works under the optimistic assumption, you might want to know that.
Here's something most retail investors don't realize: professional financial planners don't use historical averages.
When a pension fund calculates whether it can meet its obligations, it uses CMEs. When an endowment plans its spending rate, it uses CMEs. When a financial advisor builds a plan using institutional-grade software, the default assumptions are typically CME-based.
The tools available to retail investors (the free calculators you find online) often use historical averages because they're simpler to explain. But simplicity isn't accuracy.
Different firms have meaningfully different views:
| Source | US Stock Expected Return |
|---|---|
| Historical Average | 10.2% |
| JPMorgan 2024 | 6.8% |
| BlackRock 2024 | 6.5% |
| Vanguard 2024 | 4.5% |
| GMO Q4 2024 | 0.5% |
That's a huge range. GMO thinks US stocks are so overvalued that they'll barely beat inflation over the next 7 years. JPMorgan is more sanguine.
Who's right? We won't know for a decade.
The prudent approach isn't to pick one and hope—it's to understand how sensitive your plan is to these assumptions.
If you want a single number, use something toward the lower end of institutional estimates. A 5-6% stock return assumption builds in a margin of safety.
The better approach is to run your retirement plan through multiple assumption sets:
If your plan works under all of them, you're in good shape. If it only works under the optimistic ones, you need a bigger cushion.
Capital Market Expectations represent the informed view of the world's largest asset managers on what future returns will look like. They're not perfect predictions—nobody can predict the market—but they're more grounded in current conditions than simple historical extrapolation.
Key takeaways:
Run your retirement plan against published CME data from BlackRock, JPMorgan, Vanguard, and GMO. See how sensitive your success rate is to these assumptions.
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