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The S&P 493: what it is and its true performance

The S&P 493: what it is and its true performancesummary: AI Mirage: The Market Isn't Healthy, It's Just HighThe stock market's been flashing green...

AI Mirage: The Market Isn't Healthy, It's Just High

The stock market's been flashing green, and the headlines are screaming "recovery." But before you pop the champagne, let's dissect what's really driving this rally. Turns out, it's not broad-based prosperity, but a concentrated dose of AI euphoria, masking some serious underlying problems.

The Magnificent Seven vs. The Forgotten 493

We're told the S&P 500 is up over 12% this year. Sounds great, right? But that number is dangerously misleading. Peel back the layers, and you'll find that the so-called "Magnificent Seven" – Alphabet, Amazon, Apple, Meta, Microsoft, Nvidia, and Tesla – are doing all the heavy lifting. The remaining 493 companies in the index, the "S&P 493," are telling a very different story.

As the Washington Post pointed out, these are generally smaller, lower-tech companies. They're facing headwinds from deglobalization, tariffs, and a high-interest rate environment, while simultaneously not benefiting from the AI boom. Mark Zandi at Moody's Analytics calls it a tale of simultaneous tailwinds (AI) and headwinds (everything else).

Nvidia, for example, has seen its stock price explode, up nearly 30% this year alone, and over 1,000% in two years. Meanwhile, the Russell 2000 index, which tracks small-cap stocks, is down 4.5% over the same period. That's not just a discrepancy; it's a chasm. This divergence highlights a critical question: Is this a sustainable rally, or are we building a house of cards on AI hype?

Small caps, which often rely on debt for working capital, are getting hammered by rising interest rates. They also lack the scale to absorb tariff shocks or shift supply chains easily. Investors are fleeing to the perceived safety of large caps, further exacerbating the problem. It's a classic flight to quality, but it's also creating a dangerously unbalanced market.

And this is the part of the report that I find genuinely puzzling. Why are we so willing to ignore the struggles of these 493 companies? Are we so blinded by the potential of AI that we're willing to overlook the pain in the broader economy? AI-driven rally splits US market as S&P 493 lags behind giants

The S&P 493: what it is and its true performance

The Illusion of Diversification

Here's another uncomfortable truth: the S&P 500 is becoming less diversified. Torsten Slok, chief economist at Apollo, notes that one-third of the index is now concentrated in those seven corporations. It's effectively morphing into an "AI index."

Think about that for a second. An index designed to represent the broad U.S. economy is now heavily skewed toward a single sector. The diversification benefit, the very reason investors flock to the S&P 500, is eroding. What happens when the AI bubble bursts?

Michael Burry, of "The Big Short" fame, has already warned that the AI industry is exaggerating its long-term profitability. We've already seen the tech-heavy Nasdaq take a 7% hit from last month's peak. A correction in big tech could have serious ripple effects.

The economy has become increasingly reliant on the "wealth effect," where rising stock prices drive increased spending by high-income earners. If those big tech shares plunge, consumer spending could dry up quickly, increasing the risk of a recession. Consumers and corporations alike are in a very vulnerable position if the AI narrative wobbles, as Slok puts it.

The K-shaped recovery is alive and well in the stock market, too. The Magnificent Seven are thriving, while the S&P 493 are struggling. This divergence is not just a market phenomenon; it's a reflection of a deeper economic divide. K-shaped economy can also be found in S&P 500, says Apollo, with Magnificent 7 the winners

A Skewed Picture of Reality

The S&P 500 chart is a mirage. The index's gains are masking the pain felt by a huge swath of the market. The health of the overall economy is not as robust as the headlines suggest. The reliance on a few AI beneficiaries is a dangerous game, and the potential for a painful correction is growing.