Has Arista Networks Stock Quietly Become A Different Bet?
Investors pay 64 times earnings for Arista Networks (ANET). The S&P 500 trades at 22.5 times. They pay more because they expect fast growth to last, and for that to make sense, two things must both hold. Arista must get enough parts to ship its orders, and buying those parts must not squeeze its margins. The way management talks about its supply chain has changed. So what did it use to say?
What Did Arista’s Management Use To Say About Its Supply Chain?
Margins have stayed inside management’s range so far, but management no longer credits its supply chain for helping them. It did give that credit in the fiscal Q3 2024 call. Gross margin is the share of sales left after the cost of making the products. That quarter, management said pricing pressure from cloud titan customers weighed on its gross margin. It said “favorable enterprise margin and supply chain hygiene” offset that. In plain words, a tidy supply chain was helping to make up for that pressure.
That phrase no longer leads the story. In fiscal Q2 2026, the overall gross margin was 63.4%. A year earlier, the overall figure was 65.6%. Management put the drop on the mix of customers, not on its supply chain. It also kept its full-year gross margin range unchanged.
So margins are where management expected them. What management now leads with about its supply chain is a much larger number.
How Big Is The Number Arista Leads With Now?
Management now leads with purchase commitments of about $9.7 billion at the end of fiscal Q2 2026. Purchase commitments are parts Arista has agreed to buy from suppliers later. A year earlier, they stood at $3.6 billion. That is almost triple. But an order is not a part in hand. This shows Arista buying well ahead, not that it has all the parts it needs.
Sales grew too, but more slowly. Revenue in fiscal Q2 2026 rose 37.7% from a year earlier. So the commitments are growing far faster than the sales they are meant to support.
Management ties this to a tight market for parts. It expects the industry to stay short of parts until 2028. It has added contract manufacturers and secured its memory supply for 2026. So the company is buying ahead to ship orders, and that has a cost you should understand.
Should The Shift Worry You As An Arista Holder?
For now the shift is reassuring, with one clear risk. The jump in purchase commitments does not tell you what happens to those parts if orders slow. Inventory already stands at $2.5 billion, and management expects swings in inventory to affect when cash comes in.
If orders slow, you would own an expensive stock with more cash tied up in parts Arista has already agreed to buy. If parts also cost more, the gross margin would fall too. That is the real risk in a bet priced this high.
Here is where each point stands. Memory supply is secured for 2026, with visibility extending well into 2027, and gross margin is inside management’s range. A gap to the industry’s 2028 shortage timeline remains. Gross margin is the weaker of the two, though management blamed its fall on customer mix rather than parts. On the next call, a gross margin near the roughly 63% management guided for fiscal Q3 2026 would keep the shift reassuring. A gross margin below 62% and attributed to parts cost would make it concerning.
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