The dominance of mega-cap growth has defined the equity landscape for much of the past year, but recent performance shifts suggest a potential regime change favoring equal weight.
According to the February 2026 S&P DJI Equal Weight Sector Dashboard, the size factor is exerting a significant influence on returns. This divergence highlights an important juncture for advisors weighing the merits of traditional market-cap weighting against equal-weighted strategies.
The S&P 500 Equal Weight Index has begun to narrow the performance gap with its market-cap counterpart, driven by a broadening of market participation. In the past year through March 3, the State Street SPDR S&P 500 ETF (SPY ) returned 17.9%, while the Invesco S&P 500 Equal Weight ETF (RSP ) gained 15.3%. However, RSP is up 5.5% year to date while SPY is down 0.2% during the same period, highlighting the shifting landscape.
Mitigating Concentration Risk
The disparity is most visible within the technology and communication services sectors. Equal weighting’s recent outperformance suggests that the Magnificent Seven tailwinds may be cooling in favor of midcap tech constituents.
Concentration remains a primary risk factor for advisors utilizing standard cap-weighted ETFs to get broad market exposure. Currently, the top five names in SPY account for over 25% of the total portfolio. In contrast, an equal-weighted approach redistributes this exposure, effectively reducing idiosyncratic risk associated with individual mega-cap earnings misses.
For advisors seeking to balance core holdings, the Invesco equal-weighted sector suite provides a useful tool. When the valuation gap between the median stock and the market leaders reaches historical extremes, equal weighting historically offers a defensive buffer.
Investors can use these strategies for more balanced exposure to sectors with the highest concentration risk. These strategies include the Invesco S&P 500 Equal Weight Communication Services ETF (RSPC ), the Invesco S&P 500 Equal Weight Technology ETF (RSPT ), and the Invesco S&P 500 Equal Weight Consumer Discretionary ETF (RSPD ).
While cap-weighted strategies remain the standard for capturing momentum, the current macro environment may favor a more diversified footprint. By utilizing equal-weighted ETFs, advisors can capture growth of companies that are currently trading at more attractive valuations.
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