Invesco S&P 500 Revenue ETF (RWL)
The Invesco S&P 500 Revenue ETF (NYSE: RWL) holds all 500 companies in the S&P 500 but assigns each one a weight based on its trailing twelve-month net revenue rather than its market capitalization. This means that a company with $100 billion in annual sales exerts roughly twice the influence on portfolio returns as a company with $50 billion in sales, regardless of whether investors have valued the first company at $500 billion or $2 trillion. RWL has existed since 2008, making it the oldest of Invesco’s revenue-weighted index funds, and it serves as a test case for whether revenue-based indexing can outperform traditional market-cap weighting over long periods.
The Philosophy Behind Revenue Weighting
Market-cap weighting creates a peculiar feedback loop: the more expensive a company becomes relative to its peers, the larger its influence on the index and any fund tracking it. This can lead to concentration in expensive growth stocks and away from cheap value stocks, especially when growth narratives dominate market psychology. A revenue-weighted approach inverts this: a company’s influence is determined by its actual sales, not by how much investors are willing to pay for those sales.
In theory, this tilts a portfolio toward companies trading at lower price-to-revenue multiples — that is, companies where a dollar of sales is priced lower by the market. Historically, such companies have been more profitable and stable, generating higher returns per unit of volatility than the average large-cap stock. The appeal is particularly strong during periods when expensive growth stocks have run ahead of their fundamentals and cheaper, more profitable companies are out of favor.
How RWL Differs from SPY and VOO
The most popular S&P 500 tracking funds — SPY, IVV, and VOO from Vanguard — use market-cap weighting and charge expense ratios close to zero (around 0.03–0.04% annually). RWL charges a few basis points more, reflecting the cost of quarterly rebalancing to revenue weights. Because revenue figures change much less frequently than stock prices, RWL’s portfolio weights can drift quite far from the current income distribution of the S&P 500. That drift is rebalanced away quarterly, which triggers trading costs and potential tax consequences.
The real difference appears in the portfolio: RWL will tend to overweight mature, profitable companies from industries like financials, energy, and consumer staples, and underweight hyper-valued technology and communication services stocks that have high market capitalizations relative to their current sales. In bull markets for growth, that makes RWL lag. In markets that reward stable profitability and value, RWL outperforms. Over long periods, the difference compounds.
The Valuation Anchor Question
The case for revenue weighting rests on the claim that revenue is a more stable, more honest measure of a company’s economic footprint than its stock price. Revenue cannot be faked (or at least, it is far harder to manipulate than earnings). But revenue alone is a rough proxy for value. A company with $50 billion in revenue at 3% net margins is vastly different from one with $50 billion at 30% net margins. RWL treats them the same way a market-cap-weighted fund does not. A revenue-weighted portfolio can end up overloaded with low-margin businesses that are large in sales but generate little profit.
Moreover, revenue weighting is entirely backward-looking. Last quarter’s sales determine this quarter’s weight. A company facing disruption might retain a high weight until its revenues have already started collapsing, whereas market-cap weighting would have already re-priced the company downward. This lag can turn revenue weighting into a value trap — you end up owning more of the losers than you realize.
The Risk of Concentration Around Maturity
The S&P 500 contains very large, profitable, slow-growing companies that dominate global industries. Apple, Microsoft, Berkshire Hathaway, and other mega-cap stocks are mature cash machines that will always be present in any large-cap index. But the revenue-weighted approach puts even more weight on companies that are economically large, which in the U.S. means established, often-regulated, slower-growth industries. Over decades, the real wealth creation in the stock market has come from growth companies that are small in sales today but explode in value tomorrow. A revenue-weighted portfolio biases you away from those opportunities.
Reading RWL Effectively
Start with the fund’s prospectus and annual fact sheet, which detail all 500 holdings and their revenue weights. Compare RWL’s performance to standard S&P 500 index funds over 5, 10, and 15-year periods. The long-term returns will show whether revenue weighting added value net of the fee, or whether you would have been better off with a 0.03% S&P 500 ETF. Pay attention to the period: if RWL outperformed in a value-heavy decade but underperformed in a tech-heavy decade, you will know that the fund’s returns are driven mostly by a sector tilt, not by any innate superiority of the revenue-weighting approach. The fund’s annual turnover ratio reveals how much trading happens each year, a clue to tax drag in taxable accounts.