Palantir Technologies (PLTR +2.53%) stock is off 29% from its all-time high. Investors may be underrating the odds of it falling even further.
The software and artificial intelligence (AI) provider is growing its top line quickly but still trades at an objectively high valuation multiple relative to the broader market, posing a significant headwind to further stock price appreciation. That could be a natural obstacle for any investor thinking about buying in today.
If Palantir's valuation normalized to where its peer group trades, it would fall by another 80% -- and my prediction is that it will. Here's why.
Fast growth, even faster stock price appreciation
Palantir's revenue is up 119% over the last three years, and it grew 70% year over year last quarter, one of its fastest growth rates ever. The United States government and large commercial enterprises are rapidly signing new deals for Palantir's AI analytics platform, which can build custom solutions for data analysis across sprawling organizations, acting as a central intelligence layer.
At the same time, Palantir now has profit margins that are among the highest in the software market, with a generally accepted accounting principles (GAAP) profit margin of 41% in Q4 2025. It's unlikely to significantly expand its margins from here, but it is highly impressive how fast operating leverage has materialized for a software provider that was unprofitable just a few years ago.
The stock price, though, has grown much faster than the underlying business. Palantir's stock is up 1,580% over the last three years -- more than 10 times its revenue growth. This has led its price-to-sales ratio (P/S) -- market cap divided by trailing-12-month sales -- to grow to 85, up from well under 20 three years ago. This is by far the highest P/S ratio among large-cap software providers on the market today.
Why Palantir could fall 80% from here
Highly profitable software companies usually trade at P/S ratios of around 10. Even if Palantir keeps up its impressive growth, the stock could slide by 80%, assuming the P/S ratio reverts toward that norm.
Let's do some quick math to illustrate. Palantir's trailing-12-month revenue is $4.475 billion. Given its current growth rate and backlog, its top line could plausibly grow to $10 billion within a few years. At a P/S ratio of 10, a company with annual revenues of $10 billion would have a market cap of $100 billion.
Right now, Palantir's market cap is $353 billion. An 80% slide from there would yield a market cap of about $70.6 billion, which is below $100 billion. However, investors need to consider shareholder dilution -- which is something Palantir has a history of engaging in. The number of shares outstanding has climbed by 28% over the last five years. That could be another headwind for its share price in the future.
If this level of dilution continues, Palantir's share price would draw down by roughly 80% even if it has a market cap of $100 billion a few years from now. This makes the stock incredibly risky to buy today, and one that is likely to disappoint investors going forward.
