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Palantir Is Executing Perfectly. History Says It Won't Be Enough.

The historical record is brutal for S&P 500 companies valued like Palantir.

By Johnny Rice Mar 21, 2026 at 3:30PM EST

Key Points

  • Palantir trades at 87 times sales -- the most expensive stock in the S&P 500 today, and among the priciest in the index's history.
  • Of the 231 S&P 500 companies that have ever reached a price-to-sales ratio of 25 or more, just 21% beat the market over the following year.
  • Even if Palantir's stock price dropped 50% tomorrow, it would still rank among the 150 most expensive companies in S&P 500 history.

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