The Invesco S&P 500 Equal Weight ETF (RSP) crossed $100 billion in assets under management for the first time in 2026, driven by over $12 billion in year-to-date inflows. This milestone highlights a broader rotation away from mega-cap tech stocks as investors manage concentration risk in major market indexes.
Breaking Down the $100 Billion Equal-Weight Milestone
For years, a small cohort of mega-cap equities dominated U.S. market indexes. Investors are moving capital toward strategies that treat every company in the underlying index the same.
Here is the math. The Invesco S&P 500 Equal Weight ETF (RSP) has attracted more than $12 billion in fresh capital this year. That wave of liquidity pushed its total assets past the $100 billion threshold for the first time. Meanwhile, performance metrics through August 21, 2026, show RSP edging out the traditional market-weighted S&P 500 by approximately 3%.
The Bottom Line
- AUM Landmark: The Invesco S&P 500 Equal Weight ETF (RSP) crossed $100 billion in assets, fueled by over $12 billion in 2026 inflows.
- Performance Divergence: RSP outperformed the traditional market-weighted S&P 500 by roughly 3% through August 21, 2026.
- Concentration Hedge: Investors are actively mitigating risks tied to the top 10 S&P 500 holdings, which account for nearly 40% of the index.
Why Concentration Risk Triggered a Shift from Mega-Caps
For the past several years, the “Magnificent 7″—comprising Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia, and Tesla—represented roughly one-third of the entire S&P 500. Heavy capital expenditures directed toward artificial intelligence infrastructure have weighed on investor sentiment. During the first half of 2026, the Mag 7 posted flat performance, lagging behind the broader S&P 500’s 9.3% gain.
“Investors have grown increasingly concerned about the concentration risk embedded in major indices such as the S&P 500, where the top 10 names account for nearly 40% of the index,” said Nathan Geraci, president of NovaDius. “This exposure is particularly concentrated in the AI theme and the major hyperscalers, where investors are raising questions about elevated valuations and whether the heavy capital spending will ultimately be justified.”
That sentiment is echoed by institutional researchers. “All of a sudden, people are paying attention,” noted Cinthia Murphy, director of research at VettaFi. Murphy points out that equal-weight strategies can be forgotten when the market is led by a very narrow theme.
Comparing Market-Weight Giants vs. Equal-Weight Alternatives
| Fund Name | Ticker | Primary Strategy | Approximate Scale |
|---|---|---|---|
| Vanguard S&P 500 ETF | VOO | Market-Cap Weighted | ~$1 Trillion |
| iShares Core S&P 500 ETF | IVV | Market-Cap Weighted | Part of ~$3 Trillion (combined with VOO and SPY) |
| Invesco S&P 500 Equal Weight ETF | RSP | Equal-Weight S&P 500 | >$100 Billion |
| First Trust Nasdaq-100 Select Equal Weight ETF | QQEW | Equal-Weight Nasdaq-100 | High combined quality and growth scores |
While mega-funds like the Vanguard S&P 500 ETF (VOO) command large assets, more investors are turning to equal-weight and smart-beta strategies, using them as both a short-term trade and as a long-term way to stay diversified. Investors are utilizing equal-weight vehicles to capture earnings strength from the remaining 493 companies in the S&P 500 index.
The Broader Ecosystem of Smart-Beta and Sector Alternatives
The marketplace for equal-weight funds extends well beyond large-cap blended indexes. Geraci noted there are enough options available to appeal to an investor’s specific wants and needs. For instance, the Invesco Russell 1000 Equal Weight ETF (EQAL) tracks a different index, while the ProShares S&P 500 Dividend Aristocrats ETF (NOBL) tracks companies in the index that have consistently increased dividends each year for at least 25 years.
Sector-specific equal-weight funds—such as the Invesco S&P 500 Equal Weight Technology ETF (RSPT) and the SPDR S&P Biotech ETF (XBI)—allow portfolio managers to remove single-stock dominance within high-growth verticals. Alternatively, Geraci suggested that investors should simply increase their exposure to mid-caps, as lower-cost options are available.
As corporate earnings growth for the other 493 companies in the S&P 500 index looks strong, the $100 billion milestone for RSP reflects investors turning to equal-weight and smart-beta strategies.
