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The S&P is soaring, but fewer companies are setting record highs. Why that could be a red flag for the market

Alicia Adamczyk
By
Alicia Adamczyk
Alicia Adamczyk
Senior Writer
Alicia Adamczyk
By
Alicia Adamczyk
Alicia Adamczyk
Senior Writer
July 10, 2025 at 2:03 PM UTC
Why investors should pay attention to market breadth.Michael M. Santiago—Getty Images

The S&P 500 has been setting record highs in recent days, a dramatic turn from the market selloff back in April. But analysts are warning fortunes could change if overall market participation in the rally holds at the current rate.

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The new heights the S&P is reaching are being undermined by narrow company participation in those highs, according to a July 5 report from Ari Wald, head of technical analysis at wealth and investment management firm Oppenheimer & Co., and first reported by Bloomberg. Referred to as market breadth, analysts often try to see how many companies in a specific index or sector are participating in a rally to gauge how healthy it really is.

That is important to track, says Wald, because narrow participation can mask underlying weakness in the market: Since 1972, the S&P 500 has posted below-average returns over the next one-, three-, six-, and 12-month periods when its all-time high coincides with fewer than 100 companies on the New York Stock Exchange (NYSE) also hitting new highs, the analysis finds. At the last market high, 88 companies on the NYSE also hit a high.

Indeed, big tech companies have been the drivers behind the recent market heights: Just five stocks—Amazon (AMZN), Broadcom (AVGO), Meta (META), Microsoft (MSFT), and Nvidia (NVDA)—are contributing over half of the S&P 500’s total return, according to an analysis from Adam Turnquist, chief technical strategist for LPL Financial. It’s always a concern when just a few companies are responsible for most of the gains—because that means those gains could easily turn into losses depending on the strength of just a handful of companies. That’s what happened in mid-2023, when a Magnificent Seven–driven rally faded.

And while the S&P 500 was less than 1% away from a new high at Wednesday’s close, the median S&P 500 stock was trading about 12% below a 52-week high, Turnquist finds. “Breadth is a little underwhelming,” he writes. “For context, over the last decade, the gap between the index and the median stock’s 52-week highs has averaged around 5%.”

The good news, according to analysts, is that market breadth has been improving in recent weeks. The share of stocks in the S&P 500 above their 200-day moving average is 61%, just below the 10-year average of 62%, says Chris Haverland, global equity strategist at the Wells Fargo Investment Institute (WFII).

Another positive sign for the market: All S&P 500 sectors have participated in the rally. Haverland says he expects to see more improvement in broader participation as investors get greater clarity on fiscal and trade policies.

“Given the strong rally, however, we wouldn’t be surprised to see some consolidation in the coming months as the economy and earnings begin to digest the evolving trade policy,” Haverland says. “So, it may be a good time to rebalance portfolios.”

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About the Author
Alicia Adamczyk
By Alicia AdamczykSenior Writer
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Alicia Adamczyk is a former New York City-based senior writer at Fortune, covering personal finance, investing, and retirement.

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