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Seagate Technology Holdings (STX) Retires Notes As Investors Ask If The Valuation Case Still Holds

Simply Wall St·09/18/2026 00:25:48
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Seagate Technology Holdings (NasdaqGS:STX) has drawn fresh attention after its Seagate HDD Cayman unit retired about $150.7 million of 3.50% exchangeable senior notes due 2028 through a cash and share settlement.

Against that backdrop, Seagate Technology Holdings has had a choppy few months, with the share price down 11.13% over 30 days and 24.96% over 90 days, even after a 2.55% gain in the last session. At the same time, the year-to-date share price return of 179.31% and the very large 1-year total shareholder return of 273.78% point to strong longer term momentum that has already rewarded holders in a significant way.

See how Seagate Technology Holdings compares with other AI and data infrastructure plays by checking our curated list of 60 AI infrastructure stocks in the current market setup.

The stock now trades at a sizeable discount to both analyst targets and one intrinsic estimate, even after that sharp run and recent stumble. Is the market being fairly cautious on Seagate Technology Holdings, or is it mispricing the stock?

Most Popular Narrative: 31% Undervalued

At a last close of $803.13 against a narrative fair value of $1,158.73, Seagate Technology Holdings is framed as materially discounted, with that gap hinging on how much earning power its storage technology can sustain.

This matters enormously for what happens when the cycle turns. A pure pricing bet loses everything when ASPs normalise. Seagate's cost curve keeps falling regardless, because HAMR penetration is going from 40% toward 70% on a schedule set by qualification milestones rather than by the pricing environment. Thirteen consecutive quarters of gross margin expansion did not all happen in a shortage.

See why 2 investors see Seagate Technology Holdings as 31% undervalued.

According to isidrohg, this narrative uses a discount rate of 8.39% and points to a fair value that is about 31% above the current share price, with HAMR penetration and cost efficiency treated as the key drivers behind that valuation gap rather than short term pricing strength alone.

Result: Fair Value of $1,158.73 (UNDERVALUED)

Still, the Seagate Technology Holdings story can break if Western Digital closes the HAMR gap faster than expected or if the HDD duopoly loses capacity discipline.

Find out about the key risks to this Seagate Technology Holdings narrative.

Another View: Seagate Technology Through The P/E Lens

There is a catch. Seagate Technology Holdings trades on a P/E of 57.4x, which is far above the Global Tech average of 19.3x, the peer average of 25.1x, and even its own fair ratio of 54x. That premium points to less room for error if the profitability story softens or expectations cool.

See what the numbers say about this price, find out in our valuation breakdown See what the numbers say about this price — find out in our valuation breakdown.

NasdaqGS:STX P/E Ratio as at Sep 2026
NasdaqGS:STX P/E Ratio as at Sep 2026

Next Steps

Mixed messages in the Seagate Technology Holdings story make sense, and that is exactly why you should review the numbers yourself and decide quickly where you land. To frame that judgment against both the downsides and the upside potential, start with 3 key rewards and 3 important warning signs.

Looking For More Investment Ideas Beyond Seagate Technology Holdings?

If Seagate Technology Holdings has sharpened your focus, do not stop here. Broaden your watchlist with a few targeted stock themes that could reshape your portfolio.

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.