Fundamental-Weighted Indexing
Weight investments by economic fundamentals instead of market enthusiasm
- Difficulty
- Moderate
- Time to result
- ~months to results
- Steps
- 5
- Confidence
- 96%
Fundamental-weighted indexing replaces market capitalization with measures such as company earnings or dividends when assigning portfolio weights. Market-cap indexes automatically allocate more capital to securities whose prices have risen, even when those prices have become detached from underlying business performance. A fundamental index instead ties exposure to the economic contribution of each company and periodically rebalances back to that anchor. This creates a systematic value tilt: expensive companies receive less weight relative to their fundamentals, while cheaper companies receive more. Siegel and Schwartz describe historical testing across both United States and international stocks, with the resulting portfolios producing stronger risk-return trade-offs. The mechanism depends on broad diversification, disciplined rebalancing, and sufficiently low fees rather than discretionary market timing.
Origin
Jeremy Siegel and Jeremy Schwartz developed the approach while testing Jonathan Steinberg's proposal to weight indexes by earnings or dividends. Their United States and international research became a white paper and helped form the investment foundation of WisdomTree.
Core principles
- 01Market prices contain noise as well as information
- 02Capitalization weighting increases exposure to stocks after prices rise
- 03Earnings and dividends anchor portfolio weights to economic output
- 04Systematic rebalancing can capture a value premium
- 05Low implementation costs preserve more of the strategy's return
How to run it
- 1
Select an economic anchor
Choose a measurable business fundamental such as dividends, earnings, or a combination. Apply the same definition consistently across the investment universe.
Pro tip Use a measure with reliable data and a direct connection to shareholder value.
Watch out Switching fundamentals in response to recent performance turns a systematic method into market timing.
- 2
Build the investable universe
Define eligible companies using liquidity, size, geography, and tradability requirements. Exclude securities that cannot be implemented at reasonable cost.
Pro tip Begin with a broad universe so the weighting method, rather than concentrated stock selection, drives results.
Watch out A narrow universe can disguise company-specific bets as an indexing strategy.
- 3
Assign fundamental weights
Calculate each company's proportion of the universe's total selected fundamental and use that proportion as its target weight. This breaks the automatic link between a rising share price and a larger allocation.
Pro tip Consider caps or diversification constraints where one company or sector dominates the fundamental pool.
Watch out Do not confuse a high dividend yield caused by a collapsing price with sustainable dividend capacity.
- 4
Rebalance systematically
Return the portfolio to its fundamental weights on a predetermined schedule. Rebalancing reduces exposure to securities that have appreciated faster than their fundamentals and adds to those whose fundamentals support a larger position.
Pro tip Use a schedule such as annual rebalancing to balance discipline against turnover.
Watch out Frequent rebalancing can allow taxes and transaction costs to consume the expected premium.
- 5
Evaluate the full trade-off
Compare long-run returns, volatility, drawdowns, turnover, taxes, and fees with a capitalization-weighted benchmark. Judge the method across complete market cycles rather than a short period of underperformance.
Pro tip Test the same rules internationally to see whether the mechanism generalizes.
Watch out A value-oriented method can lag for years when expensive growth stocks dominate the market.
In the wild
A capitalization-weighted index continually reduces its energy allocation as share prices fall. A dividend-weighted index reviews the sector at its scheduled rebalance and retains a larger allocation where dividends and earnings remain supported. When energy recovers, the fundamental portfolio begins with materially greater exposure rather than waiting for prices to rise before adding weight.
→ The portfolio participates more fully in the recovery because its weights followed fundamentals rather than recent price momentum.
After years of rapid appreciation, several technology companies occupy an outsized portion of a capitalization-weighted benchmark. An earnings-weighted portfolio compares those market weights with each company's share of aggregate earnings and trims positions where price growth has substantially outpaced business results.
→ The portfolio lowers valuation concentration while retaining exposure to profitable technology companies.
Common mistakes
Chasing the capitalization cycle
Allowing price appreciation alone to determine position size causes the portfolio to own more of a security precisely as it becomes more expensive.
Expecting constant outperformance
The value tilt can underperform for an extended period when a small group of growth companies dominates market returns.
Ignoring implementation costs
Turnover, taxes, and high management fees can erase the advantage found in historical portfolio tests.
Is it for you?
Best for
It is best for patient equity investors seeking systematic value exposure without selecting individual stocks.
Not ideal for
It is not ideal for investors who require exact market-index tracking or want maximum exposure to current momentum leaders.
From the transcript
“Well? Fundamentals more specific more what we like dive it in and or earnings as the waiting procedure.”
“we did it not only for the US, we did it internaturally. We wrote a white paper that was associated with it.”
“This is the challenges of cap waiting. It rides things down, will never add to the weight.”
From the episode
Siegel and Schwartz on Stocks for the Long Run