Arista Networks Is Buying Further Ahead Than It Can See
The company’s multiyear purchase commitments have nearly tripled in a year while its view of customer demand still reaches only two quarters out.
Arista Networks (ANET) has just posted its first $3 billion quarter and lifted its 2026 revenue guidance for the third time, to $12.6 billion. The figure a holder should watch is not on the income statement: the $9.7 billion of parts it has already agreed to buy.
A Commitment Book That Went From $3.6 Billion To $9.7 Billion
Purchase commitments are future buys Arista has contracted for, mostly chips related to new products and AI deployments by its own description. That book ended the June 2026 quarter at $9.7 billion, against $8.9 billion three months earlier and $3.6 billion a year before. Trailing-twelve-month revenue is $10.5 billion, so the book is on the scale of a full year of sales, though these are multiyear obligations, not a one-year bill. Alongside the book, the company describes DDR4, DDR5 and NAND memory secured for 2026 with supply visibility into 2027, plus silicon, optics and a newly established liquid cooling supply chain for next-generation AI infrastructure.
Two Quarters Of Visibility Behind A Multiyear Commitment
Customer visibility still runs only about two quarters out by the company’s own account, and management does not expect the industry-wide shortage that prompted these agreements to clear until 2028. Arista is contracted years out against a demand picture extending about six months. Working capital would show that trade first: inventory closed the June 2026 quarter at $2.5 billion on turns of 1.7, up from $2.4 billion three months earlier with turns unchanged, and management warns that component timing could leave elevated inventory balances affecting the timing of cash from operations ahead of deployments. Arista can carry it, with about $13.3 billion of cash, cash equivalents and marketable securities. A balance sheet able to underwrite a commitment of that size is one of the properties the Trefis High Quality Portfolio’s holdings share.
The 62% To 64% Range Absorbs The Cost, Not The Obligation
Gross margin in the June 2026 quarter was 63.4%, down from 65.6% a year earlier on end customer mix; the cost of parts sits in the outlook instead, where guidance for the fiscal year holds a 62% to 64% range, inclusive of mix and anticipated supply chain cost increases for memory and silicon. The margin line carries the cost of supply security; it does not carry the obligation.
The Book Is Growing Faster Than Revenue
How worried should a holder be? Not very, yet. Supply, not demand, is what management says limits the guide: it is guiding on the supply it is confident it can get, with room to do better if supply frees up. Revenue grew 32.6% over the trailing twelve months and 37.7% in the June 2026 quarter, though the commitment book has grown faster than that. Arista has also qualified new suppliers and improved lead times through multisourcing, which by its own account leaves it with reduced inventory risk, even as it expects inventory to keep fluctuating. The read worsens if the book keeps climbing at that pace while revenue growth flattens, the gap to check when the September 2026 quarter is reported. The options market is not pricing much worry into it: implied volatility sits at 49, the 33rd percentile of its trailing one-year range, the sort of reading the Option Implied Volatility screen tracks.
Owning The Supply Chain Bet Alone
Holding one company means carrying every judgment it makes years ahead of the evidence, including the ones it makes with suppliers. The Trefis High Quality Portfolio is a rules-based way to own quality without resting on a single company’s decisions. That portfolio has a track record of outpacing the three major indices – the S&P 500, S&P Mid-cap, and Russell 2000.