Fundamental Weight Calculator
Weight portfolios by financial fundamentals, not market cap
Portfolio Assets
Weighting Method
Fundamental Weighted Allocation
Value Analysis
Value Tilt
Strong
Diversification
Good
Portfolio Characteristics
Fundamental vs Market Cap Comparison
| Asset | Fundamental Weight | Market Cap Weight | Difference | Value Signal |
|---|
When to Use Fundamental Weighting
Value Investing Strategy
Tesla $800B market cap but $96B revenue. Fundamental weighting gives Tesla lower weight based on actual business size, not hype. Reduces exposure to overvalued growth stocks. Classic value approach.
Contrarian Positioning
Market cap overweights winners, underweights losers. Fundamental weighting does opposite. Berkshire has huge book value but lower market cap—gets higher fundamental weight. Systematic contrarian approach.
Dividend Income Focus
Weight by dividends paid. AT&T pays $8B dividends, Apple pays $15B. Dividend weighting gives higher allocation to income producers. Perfect for retirement portfolios seeking steady cash flow.
Bubble Protection
2000 tech bubble: Cisco had huge market cap but modest fundamentals. Fundamental weighting would have given Cisco lower weight, protecting from crash. Natural bubble protection mechanism.
Asset-Heavy Industries
Banks, utilities, REITs have huge book values relative to market caps. Book value weighting gives these sectors higher allocation. Good for investors wanting exposure to asset-rich companies.
Long-term Outperformance
Research shows fundamental weighting outperformed S&P 500 by 1-2% annually over 40+ years. Works because it systematically buys undervalued, sells overvalued. Patience required—can underperform for years.
Frequently Asked Questions
What is fundamental weighting?
Allocates based on financial metrics like revenue, earnings, book value, dividends—not market cap. Company A $100B revenue, Company B $50B. Fundamental gives A 67%, B 33%. Focuses on business fundamentals.
Fundamental vs market cap?
Market cap: Tesla $800B gets 12%. Fundamental: Tesla $96B revenue gets 6%. Fundamental reduces overvalued stocks, increases undervalued companies with strong fundamentals. Less momentum bias, more value tilt.
Which metrics to use?
Revenue (sales), Earnings (net income), Book Value (assets - liabilities), Dividends (cash paid), Cash Flow. Revenue most stable. Earnings volatile. Book value good for asset-heavy companies. Use combination for balance.
Benefits?
Reduces overvaluation bias. Tilts toward value stocks. Historically outperformed cap-weighted by 1-2% annually. Better diversification. Less concentration in expensive mega-caps. Contrarian approach—buys cheap, sells expensive.
Drawbacks?
Higher turnover than market cap. More complex calculations. May underperform in growth/momentum markets. Value bias hurts in tech booms. Requires frequent rebalancing. Higher costs due to active style.
Rebalancing frequency?
Annual most common. Fundamentals change slowly unlike stock prices. Quarterly possible but increases costs. Some use threshold-based (rebalance when weights drift 5%+). Balance benefits with transaction costs.
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