The S&P 500 Equal Weight Index outperformed its cap-weighted counterpart this week by the widest gap since 2020, as investors rotated out of mega-cap tech.
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Equal-weight S&P 500 tops cap-weighted version by widest margin in 6 years
The S&P 500 Equal Weight Index beat its traditional cap-weighted sibling by the widest margin in six years, as investors shifted away from mega-cap tech into the broader market.
The divergence reflects a broadening of market participation beyond the handful of trillion-dollar tech giants that have dominated returns for nearly five years, according to S&P Dow Jones Indices data.
The Invesco S&P 500 Equal Weight ETF (RSP) has gained about 9.7% year to date, compared with roughly 8.4% for the SPDR S&P 500 ETF (SPY). That 1.3 percentage point gap represents RSP's strongest relative start to a year since 1992. For much of 2023 and 2024, the equal-weight index lagged badly as the Magnificent 7 tech stocks absorbed nearly all market gains.
The rotation reduces concentration risk in portfolios where the seven largest tech stocks had accounted for more than 35% of S&P 500 market capitalization. As that concentration eases, allocators gain more capacity to add alternative assets, including crypto, to their mix.
The divergence accelerated this week as the equal-weight index climbed while the cap-weighted S&P 500 stalled, marking the widest weekly performance gap since 2020. Since the Equal Weight Index launched in January 2003, it has outperformed the cap-weighted S&P 500 in 12 out of 21 calendar years. Over 15- to 20-year horizons, the equal-weight approach has delivered superior cumulative results.
What the Equal-Weight Signal Means
The standard S&P 500 weights constituents by market capitalization, giving Apple, Microsoft, Nvidia and their mega-cap peers outsized influence on index moves. When those names rally, the index rallies even if hundreds of other stocks are flat or declining. The equal-weighted version assigns each of the 500 constituents roughly 0.2% during quarterly rebalancing, making it a truer gauge of the average stock's performance.
When the equal-weight index outperforms, it shows that the median company is doing better than the mega-caps — a condition historically associated with sustainable bull markets. Equal-weight outperformance tends to emerge during periods of small-cap and value stock leadership, typically after extended stretches of mega-cap concentration.
Portfolio Implications
The rotation away from mega-cap tech reduces a structural vulnerability in passive portfolios. With the top seven stocks representing more than a third of the S&P 500's market value, any sector-specific shock would have outsized index-level impact. Broader participation spreads risk across more companies and sectors.
For crypto investors, the broadening equity market is one of the most reliable indicators of a risk-on macro environment. When investors are confident enough to buy beyond the safest mega-cap names, they tend to extend that risk appetite to higher-beta assets. Both versions of the S&P 500 remain in positive territory year to date — the equal-weight index is winning not because tech is crashing, but because everything else is catching up.
This article is for informational purposes only and does not constitute investment advice.
[1] It's a tale of two S&P 500s as rotation out of top tech stocks shifts into overdrive[2] S&P 500 equal-weighted index outperforms cap-weighted version by widest margin in six years[3] S&P 500 Index divergence: Equal-weight climbs while cap-weight melts[4] Forget the magnificent seven. This equal-weight S&P fund beats the mega-caps for just 0.20%[5] Strong Breadth Is Driving a Historic Week for This S&P 500 Alternative
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