Arista Is Feeling The Pinch, But It Usually Finds A Way

Supply constraints have only gotten worse, but management tends to find a way to outperformance anyway

Good Problems, Good Management

With the latest earnings report, Arista Networks ANET 0.00%↑ has now raised its FY26 revenue guidance twice in less than a year, starting at 20% full year year-over-year growth, moving to the recent guide targeting 27.7%. Alongside it, AI revenue targets have climbed from $2.75B to $3.5B. It’s clear the business is executing at a level we’ve come to expect over the years, while the demand picture heading into the back half of FY26 is, by management’s own account, the strongest it has seen since the CEO started as chief. So, why the long face on the stock? The problem (and a good one to have) is whether Arista can get product out the door fast enough to convert growing demand into revenue. But, much like the last few years have provided, supply constraints haven’t eased; in fact, the situation has gotten a bit worse. More to the point, the situation is whether a 1-2 year supply constraint gives customers enough reason to start looking elsewhere to fulfill their data center networking needs.

Good Arista, Not So Good Arista

Revenue for Q1 FY26 was $2.71B, up 35.1% year-over-year and above guidance for $2.6B. Investors have gotten used to the conservative guides and reported beats. But there’s more going on under the surface, both in good and bad ways.