Upstart Holdings (UPST) Valuation in Focus as Short Interest Surges and Growth Prospects Face New Scrutiny

Simply Wall St

Upstart Holdings (UPST) has landed back in the spotlight after recent reports showed a sharp rise in short interest, now hovering just below 28%. Short sellers are piling in at levels not seen since July, reflecting a surge in bearish sentiment and raising the stakes for investors on both sides. With Upstart’s AI-powered lending model already under the microscope, the timing of this shift has many market watchers wondering whether skepticism is warranted or if the stage is being set for a reversal.

This spike in short interest arrives on the heels of upbeat earnings projections and ongoing product expansion. While Upstart’s share price is down over the past month, it remains up more than 40% over the last year and has soared nearly 1,760% over the past three years. Momentum seems to be pausing as investors digest mixed signals—strong revenue growth, ambitious guidance, but new doubts about risk and future profitability.

With sentiment swinging and volatility climbing, is Upstart now attractively valued for a rebound, or is the market simply bracing for more turbulence ahead?

Most Popular Narrative: 29.1% Undervalued

According to the most widely followed narrative, Upstart Holdings is considered significantly undervalued based on forward-looking growth assumptions and modeled profitability improvements.

Improvements in underwriting, automation, and personalization enhance loan approval rates, lower costs, and reduce default risks. These factors have a positive impact on revenue and net margins.

Strategic HELOC growth, backed by strong banking relationships and an expanded borrower base, sets the stage for future revenue growth and earnings support.

Want a peek behind this valuation surge? The narrative hints at a dramatic leap in earnings and revenue, along with margins that could attract significant attention in the finance sector. What are the bold assumptions pushing this price target so high? Uncover the growth forecasts, profit inflection points, and the controversial premium multiple included in this story.

Result: Fair Value of $80.85 (UNDERVALUED)

Have a read of the narrative in full and understand what's behind the forecasts.

However, persistent high default rates or any decline in model accuracy could quickly undermine optimism and challenge Upstart’s bullish outlook.

Find out about the key risks to this Upstart Holdings narrative.

Another View: Are Market Fundamentals Flashing a Warning?

While the growth outlook is optimistic, a look at current market benchmarks tells a different story. Upstart's valuation is on the higher side compared to the industry average. Is the growth narrative enough to support this premium?

See what the numbers say about this price — find out in our valuation breakdown.
NasdaqGS:UPST PS Ratio as at Sep 2025
Stay updated when valuation signals shift by adding Upstart Holdings to your watchlist or portfolio. Alternatively, explore our screener to discover other companies that fit your criteria.

Build Your Own Upstart Holdings Narrative

If you see the story unfolding differently or want to dig into the data yourself, you can quickly create your own perspective in just a few minutes. Do it your way.

A great starting point for your Upstart Holdings research is our analysis highlighting 1 key reward and 1 important warning sign that could impact your investment decision.

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

Valuation is complex, but we're here to simplify it.

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