The Gravity of Giants

The ‘Magnificent Seven’

William Orton

What is the S&P 500?

  • Stock market index (measures the performance of stocks, like a scoreboard)
  • Tracks the largest 500 companies in the United States

What if seven companies in the S&P 500 dominated the entire market?

“The Magnificent Seven”

  • Apple
  • Amazon
  • Microsoft
  • Alphabet (owns Google)
  • Meta Platforms
  • Nvidia
  • Tesla

The Great Market Divide

  • These seven companies are growing way faster than the other 493
  • The “Giants” are carrying the weight of the entire market

The High Cost of Growth

  • The Mag 7 prices are highly volatile, fluctuating far more than the typical stock
  • Rapid growth means investors are in for a much rougher ride

Nvidia’s Insane Momentum

  • The aggressive momentum (blue) recently surpassed the long-term average (black)
  • This illustrates Nvidia has stepped into “another gear,” experiencing extremely rapid growth

Pushing Mathematical Limits

  • The price line is skirting the upper limit of its “normal” price range
  • This means the stock may be extended beyond normal levels

Entering the Danger Zone

  • An RSI above 70 signals the stock is “red hot” and overbought
  • Stocks often crash soon after reaching such high temperatures

The Crash

  • This graph reveals how much money investors stand to lose during their “bad” periods
  • Although they experience deep drops, these stocks quickly bounce back

Correlation Heatmap

  • These seven stocks all tend to go up and down all at the same time
  • One failing company can bring them all crashing down together

Monthly Performance Heatmap

  • This graph indicates which months saw “blue” (good) or “red” (bad) returns
  • The patterns show that the growth isn’t random but happens in bursts

Moving Faster than the Market

  • These stocks respond more strongly to market news than the S&P 500
  • As the market moves an inch, these stocks move a mile

High Stakes, High Returns

  • You stand to make substantially more money, but you take substantially greater risks of losing money
  • The Mag 7 are outliers on the graph, distant from “ordinary” stocks

So what?

  • Diversification is an illusion right now
  • Even if your portfolio seems “diversified,” your investments in the S&P 500 almost completely depend on seven technology companies. Whatever happens to these companies will also happen to your investments.

References & Repos

  • tidyquant vignette

  • Dancho, M., & Vaughan, D. (2026). Package ‘tidyquant’. CRAN. https://CRAN.R-project.org/package=tidyquant

  • Grobys, K. (2025). Magnificent 7: unsustainable growth and systemic risk. Review of Quantitative Finance and Accounting.

  • Nenkov, D. (2024). “The Magnificent Seven” Technology Stocks and Their Impact on the S&P 500: A Review 4 Years Later. Finance, Accounting and Business Analysis.

Contact

William_Orton1@baylor.edu Github @williamorton06