RACWI US ETF (RAUS)

RAUS is a large-cap US equity fund built on a deceptively simple premise: weight stocks by what they earn and own, not by what the market happens to value them at. The RAFI US 1000 Index (the research arm at Research Affiliates) applies book value, earnings, dividends, and sales to determine portfolio weights. The outcome is a portfolio that systematically holds more of the cheap stocks and less of the expensive ones — a value tilt that can boost returns during certain cycles and drag during others.

The mechanism: fundamentals instead of market cap

The S&P 500 weights holdings by total market value. Microsoft becomes a larger position than it was last year simply because its stock price rose. The market-cap approach is self-reinforcing: recent winners get larger weights; recent losers get smaller ones. RAUS inverts this logic. It asks: what are the company’s book assets, its cash earnings, its annual dividends, its revenue? These measures are less volatile than share prices. A company trading at a low multiple of earnings receives a weight larger than its market cap alone would justify.

This rebalancing force is gradual but relentless. Once a year the fund reshuffles, selling overweighted expensive stocks and buying underweighted cheap ones. In the long run, this buy-low-sell-high discipline can pad returns. In the short run, it often means underperformance when growth stocks rally.

The 1,000-stock breadth

RAUS covers roughly 1,000 companies — broader than the S&P 500’s 500. This wider net captures mid-to-large stocks just below the top 500, reducing idiosyncratic risk from a handful of mega-cap names. But breadth comes with a cost: liquidity drops as you move down the size spectrum, and annual turnover (about 25 percent) triggers ongoing rebalancing friction.

Cycles and underperformance windows

A value-tilted fund thrives when the market rewards cheap stocks: steady growth, rising rates, rotations away from mega-cap growth. From 2003 to 2020, this tilt was a modest tailwind. Since 2021, it has been a headwind. When Nvidia, Microsoft, and Apple dominate returns and trade at high earnings multiples, a fund that holds them at a lower weight than their market cap justifies will trail.

The trade-off is stability. When expensive growth stocks crash, RAUS, already underweighted in the carnage, may hold up better. But that is a cold comfort to someone who has underperformed for three or four years waiting for the pivot.

Research and suitability

RAUS suits investors who believe fundamentals weighting is durable across cycles and can tolerate extended periods of underperformance during growth rallies. It is not a sector bet; it is a reweighting bet. The fund’s prospectus details the annual rebalance calendar, the RAFI methodology, and fee structure. Track the fund’s turnover, its expense ratio trend, and its relative valuation (How cheap are RAUS holdings versus the S&P 500?) to understand whether you are paying for outperformance or underperformance.

How fundamentals weighting differs from market-cap weighting

Market-cap-weighted indices, like the S&P 500, work by allocating portfolio weight in proportion to each company’s total market value. A $2 trillion company gets a larger weight than a $200 billion company. This approach is passive, easy to replicate mechanically, and ensures that the index includes only investable companies at meaningful scale. It also has a subtle effect: it automatically overweights the stocks that have recently appreciated most in price, because appreciation increases market capitalization.

Fundamentals weighting approaches this differently. Rather than starting with what the market values a company at, they start with what the company produces: its sales, its book value, the cash flow it generates, the dividends it pays. These fundamental metrics are then used to determine portfolio weight. A company with higher book value or more earnings gets a larger weight, regardless of whether the stock has recently rallied or fallen.

This creates a systematic tilt toward stocks trading at lower valuations — what practitioners call a value tilt. When the market pushes high-growth technology stocks to high prices, those stocks receive less weight in RACWI than they would in a cap-weighted index, because their earnings or book value, while large, is not as large as their market price suggests. Conversely, a company trading at a low multiple of book value or earnings receives a weight larger than its market cap would suggest. Over time, this rebalancing process — selling winners and buying losers relative to cap weighting — can either enhance or erode returns, depending on whether the value tilt is currently in favor or out of favor.

The 1,000-stock approach and diversification

RACWI US includes approximately 1,000 large-cap and mega-cap US companies, a broader sweep than the S&P 500’s 500 constituents. The larger number of holdings provides greater granularity within the large-cap universe and includes mid-to-large-cap companies that fall just outside the S&P 500. This breadth reduces single-stock idiosyncratic risk — the portfolio’s performance is not driven by a handful of mega-cap names as much as it would be in a more concentrated index.

The downside to holding 1,000 names is that the smallest holdings are liquid but not deeply traded on every platform. For an individual investor, this matters little; for an asset manager allocating hundreds of millions, trading costs and liquidity constraints can add up.

Annual rebalancing and turnover

RACWI rebalances its holdings once a year, at a set date, to re-align weights with the latest available fundamental metrics. Annual rebalancing is slower than many active stock pickers execute, but faster than a true passive index that only rebalances when stocks are added or removed due to index changes. The annual cadence reduces trading costs compared to quarterly or more-frequent rebalancing, but it can create tracking error in the months immediately after a rebalance, as market values drift from the intended weights.

The fund’s turnover is a key cost factor. When stocks are reweighted, the portfolio must sell some holdings and buy others, incurring transaction costs and potentially tax consequences for shareholders in taxable accounts. Historically, fundamentals-weighted funds have experienced 20 to 30 percent annual turnover (meaning roughly one-third of the portfolio is reshuffled each year), which is higher than market-cap-weighted passive indices (which typically see single-digit turnover) but far lower than active stock-picking funds.

The value tilt in context: cycles and reversals

RACWI’s fundamentals weighting creates a sustained tilt toward lower-valuation stocks. This tilt can be a source of outperformance during periods when the value strategy is favored — typically when economic growth is steady, interest rates are moderate, and investors are not chasing high-growth narratives. From roughly 2003 to 2020, the value tilt was a reliable source of modest outperformance.

However, value tilts can underperform significantly during periods when growth stocks dominate. From 2021 onward, mega-cap technology companies traded at valuations vastly higher than their book value or near-term earnings, driving massive outperformance for growth and underperformance for fundamentals-weighted indices. A large portion of RACWI’s weight remains in technology, healthcare, and financials — the largest US sectors — but the reweighting away from the most expensive mega-cap names like Apple, Microsoft, and Nvidia reduces exposure to the stocks that have driven US equity returns in recent years.

The trade-off, in investing terms, is that RACWI maintains more stable valuations across the cycle. When expensive growth stocks retreat, a fundamentals-weighted portfolio may hold up better, because it has less concentrated exposure to the most-overvalued names. When growth returns to favor, it may lag.

Costs and expense structure

RACWI’s expense ratio reflects the costs of annual rebalancing, index administration, licensing fees for the RAFI methodology, and fund operations. For an active index fund, the expense ratio is competitive, typically 0.20 to 0.40 percent annually. This is higher than a passive cap-weighted broad-market index fund (which costs 0.03 to 0.10 percent) but lower than an actively managed stock fund (which typically costs 0.50 to 1.50 percent or more).

The fund’s expense ratio is the explicit cost; the implicit costs lie in rebalancing turnover, bid-ask spreads on entry and exit, and any tracking error relative to the underlying index. These costs vary with market conditions.

Who RAUS appeals to and how to research it

RAUS is intended for investors who believe that systematic value and fundamental-based weighting can add value relative to market-cap weighting, particularly over long holding periods and through complete market cycles. It suits investors comfortable with modest underperformance during growth rallies in exchange for a lower valuation foundation and potential outperformance during value recoveries. It is not a market-timing tool.

An investor considering RAUS should start with Research Affiliates’ RAFI methodology document, which explains how fundamentals are measured and applied, and the prospectus and fact sheet, which detail the annual rebalancing calendar, the index constituents, and the expense structure. Monitor the fund’s tracking error relative to the underlying RAFI US 1000 Index to detect any cost structure surprises.

Key metrics to watch include valuations relative to the broader market (How expensive are RAUS holdings versus the S&P 500?), the fund’s annual turnover (rising turnover can signal higher costs), and relative performance during different market cycles (Does RAUS outperform in downturns and underperform in growth rallies?). The strength of RACWI’s approach lies in its consistency; the weakness lies in its exposure to rotating market regimes where value is out of favor. The fund itself is a mechanically rebalanced index; the investment case lives in conviction about whether fundamentals weighting is a reliable source of long-term advantage.