Fastly (FSLY) Could Be 4% Undervalued As Comcast And AI Security News Builds #AI


Fastly (FSLY) is in focus after Comcast began running the company’s content and application delivery software directly inside its nationwide network for Peacock’s biggest live sports streams, while new AI security tools broaden Fastly’s edge platform.

Fastly’s recent Comcast rollout and AI security launches come after a sharp re-rating in the market, with the share price up 153.29% year to date and a 1-year total shareholder return of 192.30%, signaling strong momentum even after a recent 2.20% daily pullback.

Scan how Fastly’s Comcast rollout and new AI security tools compare with other high-growth infrastructure plays by reviewing the hand-picked 90 AI infrastructure stocks now shaping digital traffic and compute at the edge.

Fastly shares have already risen on enthusiasm related to Comcast and AI. The next task is to determine whether the current price still offers enough potential reward to justify the risk buyers are taking on now.

Most Popular Narrative: 4% Undervalued

Fastly closed at $25.81 against a most-followed fair value estimate of $27.00, so the current setup leans modestly in buyers’ favor while still hinging on how security and compute workloads evolve from here.

The acceleration of cloud migration and edge computing, combined with Fastly’s increased product velocity (especially in Compute and adaptive observability analytics at the edge), expands the company’s addressable market and underpins durable multi-year revenue growth.

See why 30 investors see Fastly as 4% undervalued.

Result: Fair Value of $27.00 (UNDERVALUED)

Still, the bullish Fastly narrative can crack if larger cloud providers squeeze CDN pricing or if heavy spending keeps losses near the current US$81.1 million level.

Find out about the key risks to this Fastly narrative.

Another View On Fastly’s Valuation

Fastly screens very differently when you look at the current P/S ratio of about 6x. The broader US IT group sits closer to 1.9x, while the fair ratio model points to 4.5x, which suggests investors are paying a premium that could shrink if expectations cool.

That kind of gap can work in your favor if future execution keeps sentiment elevated, but it can also amplify downside if growth or security traction disappoints. The real question is whether you think Fastly deserves to trade this far above both its industry and its own fair ratio.

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

NasdaqGS:FSLY P/S Ratio as at Oct 2026

Next Steps

With Fastly pulling strong opinions in both directions, it makes sense to move quickly and stress test the numbers yourself before sentiment shifts again. To weigh the upside case against the potential pitfalls in one place, start by reviewing the 1 key reward and 3 important warning signs.

Looking For More Investment Ideas Beyond Fastly?

Fastly might already be on your radar, but the real edge comes from lining it up against other high quality ideas before the next move hits.

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.

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