Arista Networks (ANET)

Investment Review After Q1 FY2026 Earnings (2026.05.05)

TL;DR

Arista Networks is the #1 high-speed Ethernet switching vendor, providing single-OS (EOS) networking across cloud, AI fabric, campus, and routing for hyperscalers and enterprises. Just reported: Q1 FY2026 revenue $2.71B (+35% YoY), non-GAAP GM 62.4%, OM 47.8%, record op cash $1.69B — strong beat-and-raise. Q2 FY2026 guide ~$2.8B (+~28% YoY), GM 62-63% — solid but decelerating from Q1; FY2026 raised to $11.5B (+27.7%). Stock at $170 with 55x P/E(ttm), up from 42x at quarter close — premium that prices in multi-year supply ramp executing cleanly.

Summary

Finding	Assessment
5-Year Stock Return	Stock currently $170, up >700% from $21 (5 years ago). TTM OP +400% ($856M→$4.16B). P/E(ttm) at 55x. FCF 128% of OP. $12.35B cash, zero debt. Among the most consistent compounders in tech.
Business Model	#1 cloud/AI data center networking (high-speed switching share leader per 2025 analysts). Single EOS across all products. Product 83% + Service 17%. Cloud/AI ~50%, Enterprise ~30%, Specialty ~20%. Zero debt; $12.35B cash.
Competitive Moat	WIDE EOS single-image software moat across front + back end (only ANET has this). 15-year hyperscaler co-design. 100+ Etherlink customers at 800G. 94% customer approval (NPS 89). 3 AI fabric use cases — scale-up new in 2027.
Past 5-YR Drivers	AI networking from ~$0 to $3.5B (FY2026 raised guide), campus expanding toward $1.25B+, EOS software leverage maintaining 62-64% GM and 46-48% OM, and 4.5% S&M enabling organic customer growth.
Recent Stock Move	Stock currently $170, up 77% from $96 (Sep 2024); +39% post Q1 print vs $123 quarter close. TTM OP +49% (3 yrs). R40 78% Q1 actual (20 consecutive qtrs above 40%). FY2026 guide raised to $11.5B (+27.7%).
Revenue Trend	DECELERATING Rev YoY: 35% (Q1 2026) → 29% (Q2 2026E).
Margin Trend	FLAT OM%: 43% (Q1 2026) → 43% (Q2 2026E).
TTM OP Trajectory	DECELERATING TTM OP QoQ: 8% (Q1 2026) → 6% (Q2 2026E). TTM OP $4,155M.
Key Opportunities	3 AI fabric use cases (scale-up new 2027, scale-out 100+ customers at 800G, scale-across most differentiated). AI raised $3.25B → $3.5B FY2026; XPO optics 100+ vendor signatures; campus + NeoCloud + Sovereign cloud diversifying.
Key Risks	P/E 55x (vs 42x at Q1 close) prices in multi-year ramp executing cleanly + supply unlocks on schedule. 52-week chip lead times constrain growth; eating margin to assure supply; M+M customer concentration; NVIDIA InfiniBand still dominant in AI scale-up.
Catalysts	Q2 FY2026 print (~Aug 2026, guide ~$2.8B); 1.6T switching qualification H2 2026; Innovate 2027 roadmap; ESUN/scale-up Ethernet 2027 deployment; 1-2 new 10% customers shipping at scale; H2 supply-chain easing if memory normalizes.
P/E(ttm) Valuation	ELEVATED at 55x (5-year range: 25x-62x). Above midpoint. Premium justified by 35% Q1 growth, 47.8% OM, zero debt, AI fabrics raised. If FY2027 hits $14B+ at 46% OM, forward P/E compresses to ~38x. If supply slip or M+M pause, P/E could compress to 40-45x.

Q1 FY2026 Key Data

Revenue $2.71B (+35.1% YoY), beat $2.6B guide. Non-GAAP GM 62.4% (in 62-63% range); Non-GAAP OM 47.8%; EPS $0.87 (+31.8% YoY). AI + specialty providers led growth this quarter.
Record op cash $1.69B; cash $12.35B; no buyback Q1. Purchase commitments $8.9B (+$2.1B QoQ) reflect multi-year AI demand. Deferred rev $6.2B (+$830M QoQ).
Q2 guide ~$2.8B revenue, GM 62-63%, OM 46-47%, EPS ~$0.88. FY2026 RAISED: revenue $11.5B (+27.7% growth, prior 25%); AI fabrics raised $3.25B → $3.5B; campus held at $1.25B; GM 62-64%; OM ~46%.

Key Takeaways from Earnings Call

Three AI fabric use cases — scale-up (NEW 2027+), scale-out (100+ customers at 800G), scale-across (most differentiated). Scale-across ~1/3 of AI revenue this year. ESUN spec drives scale-up Ethernet for 2027; 5-7 rack designs in engineering.
Demand outstrips supply for 1-2 years; ANET eats margin to assure customer continuity. 52-week chip lead times across wafers/silicon/optics/memory. Purchase commitments now multi-year ($8.9B). Small price increases only.
#1 high-speed switching share (>10 GbE) per 2025 analysts; XPO optics 100+ vendor signatures. XPO 12.8 Tbps/module, 204.8 Tbps/rack with integrated cold plate. NeoCloud AMD MI-series + TPU wins added to scale-across diverse-accelerator list.

Key Segments and Revenue Mix (FY2025)

Segment	Revenue	% of Total	Key Details
Cloud & AI Titans	~$4,323M	48%	Hyperscalers (Meta, Microsoft likely); Etherlink AI platforms; 800G/1.6T switching; 2 customers >10%
Enterprise & Financials	~$2,882M	32%	Campus (AVA), routing, CloudVision; $800M+ campus revenue; VeloCloud acquisition (branch)
AI & Specialty Providers	~$1,801M	20%	Apple, Oracle, neo-clouds; emerging hyperscaler-adjacent demand; fastest-growing sector
Total FY2025	$9,006M	100%	+29% YoY. GM 64.1%. OP $4.3B (48% OM). Net income $3.8B ($2.98 EPS). Cash $10.7B. Zero debt.

Business Model

SUPPLIERS

Broadcom (merchant silicon)
Contract manufacturers (Foxconn, etc.)
DDR memory suppliers
Optical transceiver vendors

Components / Assembly →

ARISTA NETWORKS

EOS (Extensible Operating System)
Etherlink AI switching (800G/1.6T)
CloudVision management platform
AVA Campus & VeloCloud branch
$10.7B cash, zero debt

Switches / Software / Services → $ Revenue

CUSTOMERS

Cloud hyperscalers (Meta, Microsoft)
AI infrastructure builders
Enterprise & financial institutions
Service providers & telcos
10,000+ cumulative customers

Moat Assessment: WIDE

EOS is the most advanced network OS in the industry — deep switching costs across 10,000+ customers. Single image 10G → 800G → 1.6T eliminates Cisco multi-OS complexity. CloudVision at 3,000+ customers. Migrating back re-architects the stack.
AI networking position secured by 10-15 year hyperscaler co-design relationships. Jayshree: "privileged partnerships" — ANET co-designs AI rack systems + Etherlink fabrics. Network vendor-of-record for training creates lock-in.
Campus opportunity extends moat from cloud to enterprise — but Cisco still dominant in traditional campus. AVA Campus + SWAG/VESPA differentiate on cognitive wired/wireless. NVIDIA InfiniBand competes in scale-up. Moat narrower in campus.

Stock vs. Earnings — 5-Year Performance

Stock currently $170, up >700% from $21 (5 yrs ago). One of the most consistent compounders in networking on cloud + AI data center demand. Stock peaked $146 Q3’25, drew down to $123, then +39% post Q1 print on raised FY2026 guide.
TTM OP grew $856M → $4,155M (+385%) on AI networking + cloud switching dominance. OM expanded 37% → 48% on EOS leverage + 4.5% S&M. Revenue $2.7B → $9.0B (+233%); GM stable 62-64% as mix shifted to cloud titans.
FCF exceptional at 128% of OP; $12.35B cash and zero debt. Capital-light (~$55M quarterly CapEx) converts nearly all OI to FCF. $1.6B FY2025 buybacks. Zero debt = strongest balance sheet in our networking coverage.

Past 5-Year Key Drivers

AI networking drove ANET from cloud switching leader to AI infra "gold standard terabit network." AI center rev near-zero → $1.5B FY2025 → $3.5B FY2026. 100+ Etherlink customers at 800G. Founding member of ESUN + UEC.
Campus + routing adjacencies expanded TAM beyond data center switching. Campus $800M+ FY2025 → $1.25B FY2026. VeloCloud (Jul 2025) added SD-WAN. Campus + routing = 18% of revenue, diversifying from cloud-titan concentration.
EOS software differentiation maintained 62-64% GM and 46-48% OM at scale. Single EOS image across all products (campus → cloud → AI) — Cisco can’t match. NPS 89 drives organic expansion with 4.5% S&M.

Quarterly Key Metrics

	Q1 2024	Q2 2024	Q3 2024	Q4 2024	Q1 2025	Q2 2025	Q3 2025	Q4 2025	Q1 2026	Q2 2026E
Quarter End	Mar 2024	Jun 2024	Sep 2024	Dec 2024	Mar 2025	Jun 2025	Sep 2025	Dec 2025	Mar 2026	Jun 2026
Stock Price	$75	$89	$96	$111	$77	$102	$146	$131	$123	$170
Stock QoQ	+29%	+19%	+8%	+15%	-30%	+32%	+42%	-10%	-6%	+39%
Rev YoY	16%	16%	20%	25%	28%	30%	27%	29%	35%	29%
OM%	42%	41%	43%	41%	43%	45%	42%	42%	43%	43%
R40 (Rev YoY + OM%)	58%	57%	63%	67%	70%	75%	70%	70%	78%	72%
TTM OP ($M)	$2,433	$2,603	$2,785	$2,945	$3,144	$3,430	$3,623	$3,856	$4,155	$4,385
TTM OP QoQ	+8%	+7%	+7%	+6%	+7%	+9%	+6%	+6%	+8%	+6%
FCF/OP ttm	88%	104%	114%	125%	121%	116%	112%	111%	128%	129%
Debt/EBITDA	0.0x	0.0x	0.0x	0.0x	0.0x	0.0x	0.0x	0.0x	0.0x	0.0x
P/E ttm	42x	46x	46x	50x	33x	40x	55x	48x	42x	55x

Recent Stock Performance & Drivers

Stock currently $170, vs $96 (Sep 2024) and $123 (Q1 2026 close). +39% post last quarter end rip reflects beat-and-raise: Q1 +35% YoY, FY2026 raised to $11.5B, AI raised to $3.5B. Pre-print: three down qtrs ($146→$131→$123) on AI spending debates.
TTM OP grew $2,785M → $4,155M (+49%) over 9 qtrs; R40 above 40% for 20 consecutive qtrs. Revenue accelerated to +35% Q1 on AI center networking. OM held at 43% as EOS leverage offset cloud-titan mix shift. R40 of 78% Q1 is a 4-year high.
Zero-debt balance sheet with $12.35B cash; record $1.69B op cash this qtr. FCF/OP 128% Q1; no buyback ($818M remaining auth). Purchase commitments $8.9B (+$2.1B QoQ) signal multi-year AI demand visibility.

Opportunities

3 AI fabric use cases (scale-up, scale-out, scale-across) all run on Arista’s EOS. AI raised $3.25B → $3.5B FY2026 (doubling YoY). Scale-across most differentiated, ~1/3 of AI rev. Scale-up new 2027 — 5-7 rack designs in engineering.
#1 high-speed switching share (>10 GbE) per 2025 analysts; XPO optics 100+ vendor signatures. XPO 12.8 Tbps/module, 204.8 Tbps/rack with integrated cold plate — ANET positions XPO as a 10-year platform. $8.9B supply commitments signal durability.
Campus + branch + international diversify away from cloud-titan concentration. Campus held at $1.25B FY2026. VeloCloud SD-WAN integrating into branch. NeoCloud + Sovereign cloud "underappreciated" per Jayshree. 1-2 new 10% customers in demand FY2026.

Challenges

Valuation risk: P/E 55x prices in multi-year ramp + supply unlocks on schedule. Pre-print P/E 42x. 52-week chip lead times constrain shipment pace. Scale-up slip, 1.6T miss, or M+M CapEx pause would compress the multiple sharply.
Demand outstrips supply 1-2 years; eating margin (62.4% Q1 vs 64.1% FY2025) to assure continuity. Wafer/silicon/CPU/optics/memory all constrained. Small price hikes only. Cloud-titan mix shift + memory inflation pressure GM into 62-64% range.
M+M concentration + NVIDIA InfiniBand still dominant in AI scale-up training. Q1 2025 -30% drawdown was partly M+M CapEx concerns. ESUN positions ANET for scale-up; NVIDIA GPU+IB still wins most demanding clusters. Ethernet-vs-IB TAM debated.

Next 12 Months

Q2 FY2026 guide ~$2.8B (+~28% YoY); GM 62-63%; OM 46-47%; EPS ~$0.88. ANET has beaten guide every qtr. A beat >$2.85B with GM ≥63% extends the multiple. A miss or weak Q3 guide on supply slip compresses P/E 55x → 45x.
FY2026 raised to $11.5B (+27.7%); AI $3.25B → $3.5B; campus $1.25B; OM ~46%. Each beat-and-raise reinforces the premium. Watch AI run rate hits $3.5B by year-end + whether 1-2 new 10% customers ship at scale (vs just demand).
Supply-chain unlock pacing is the key swing factor. 52-week chip lead times; $8.9B multi-year purchase commitments. Faster ease → growth + margin both expand. Memory cost normalization H2 2026 would restore GM toward 64%.

Next 12-24 Months

Execution test: can scale-up Ethernet (ESUN) win meaningful AI training share in 2027+? 5-7 rack designs in engineering; NVIDIA NVLink+IB still dominant. ANET positions XPO + 1.6T + EOS. AI revenue could exceed $5B FY2027.
Customer diversification: 1-2 new 10% customers; campus + NeoCloud + Sovereign cloud reduce M+M concentration. $5-10M enterprise tier growing fastest. Campus → $2B+ FY2028. Enterprise to 40% of rev cuts concentration risk.
Multi-year supply visibility ($8.9B commitments, $6.2B deferred) supports compounding through 2027-28. 6-8 qtr qualification cycles for new AI products. Front:back ratio now 1:1. EOS single-image moat across front + back is unique.

Core Metrics Scorecard

	Q3'21	Q4'21	Q1'22	Q2'22	Q3'22	Q4'22	Q1'23	Q2'23	Q3'23	Q4'23	Q1'24	Q2'24	Q3'24	Q4'24	Q1'25	Q2'25	Q3'25	Q4'25	Q1'26	Q2'26E
Quarter End	Sep21	Dec21	Mar22	Jun22	Sep22	Dec22	Mar23	Jun23	Sep23	Dec23	Mar24	Jun24	Sep24	Dec24	Mar25	Jun25	Sep25	Dec25	Mar26	Jun26
R40 > 40%	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
R40 accelerate		✅	✅	✅	✅								✅	✅	✅	✅		✅	✅
TTM OP QoQ > 10%				✅	✅	✅	✅
TTM OP QoQ accelerate		✅	✅	✅	✅				✅				✅		✅	✅		✅	✅
TTM FCF/OP > 60%	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
Debt/EBITDA < 3.5	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅	✅
Total passes	3	5	5	6	6	4	4	3	4	3	3	3	5	4	5	5	3	5	5	3
Stock QoQ	-5%	+67%	-3%	-33%	+20%	+7%	+39%	-3%	+16%	+23%	+29%	+19%	+8%	+15%	-30%	+32%	+42%	-10%	-6%	+39%
P/E ttm	35x	55x	48x	29x	30x	28x	35x	30x	31x	35x	42x	46x	46x	50x	33x	40x	55x	48x	42x	55x

R40 > 40% has passed every quarter for 20 straight — most consistent metric in our coverage. Q1 2026 R40 hit 78% (4-year high) on rev +35% YoY + OM 43%. R40 + FCF/OP > 60% + zero leverage give ANET a 3-pass floor in any quarter — best balance sheet in our universe.
TTM OP QoQ > 10% has not passed since Q3 2022 — caps the scorecard at 5/6 max. ANET’s earnings grow steady 5-9% QoQ. Q1 2026 scored 5/6 (OP QoQ accel fired); Q2 2026E projects 3/6 as R40 accel + OP QoQ accel slip. Tradeoff: consistency vs explosive growth.
+39% post last quarter end rally validates the 5-pass + raised guide pattern. Strongest rallies (+42% Q3’25, +39% Q2’26 post last quarter end) coincide with raised AI guidance + scorecard ≥5. P/E now 55x (vs 42x at $123 close) — multiple stability hinges on scale-up + 1.6T delivery in 2027.

Chart: R40 vs Stock Price (Since 2020)

Chart: Scorecard Total Passes vs Stock Price (Since 2020)

Source: SEC EDGAR annual and quarterly filings, company earnings conference calls and presentations.

Disclaimer: This report is for educational purposes only. NO investment advice.