Arista Networks (ANET) reported record second-quarter revenue that surpassed $3 billion for the first time, driven by strengthening demand across cloud, data center, campus, routing, and artificial intelligence networking markets. The milestone underscores Arista's continued gains against entrenched rival Cisco in high-speed data center switching, particularly among hyperscale cloud operators.

ANET shares closed 3.04% higher at $190.51 and then surged 11.61% in after-hours trading to $212.63, as the earnings results and operating margins exceeded prior-year levels.

Revenue Crosses $3 Billion Mark

Second-quarter revenue reached $3.036 billion, a 37.7% increase from $2.205 billion in the same quarter a year earlier. Revenue also grew 12.1% from the first quarter. Product sales accounted for $2.605 billion, while services contributed $430.5 million.

Gross profit totaled $1.910 billion, supported by sustained demand for high-speed networking equipment and related services. GAAP gross margin declined to 62.9% from 65.2% a year earlier, while non-GAAP gross margin fell to 63.4% from 65.6%, reflecting shifts in product mix and costs.

Operating performance strengthened significantly. GAAP operating income climbed to $1.378 billion from $986.2 million, with the GAAP operating margin improving to 45.4%. The non-GAAP operating margin advanced to 49.9%. Net income rose to $1.213 billion, compared with $888.8 million in the prior-year quarter.

Earnings Growth

GAAP diluted earnings reached $0.95 per share, up from $0.70 in the second quarter of 2025. Non-GAAP diluted earnings increased 39.7% to $1.02 from $0.73 per share. The earnings growth reflected stronger revenue, wider operating margins, and disciplined expense management.

AI Infrastructure Expansion

Arista Networks continued to deepen its presence in artificial intelligence infrastructure with new high-capacity Ethernet systems. The company introduced its 7060XE7 series, delivering 1.6-terabit connectivity and up to 100 terabits of system bandwidth. The new platforms include liquid-cooled options designed for large computing clusters and power-sensitive data center deployments.

The push into AI-grade Ethernet positions Arista as an alternative to InfiniBand-based solutions that have dominated GPU cluster interconnects, broadening the addressable market for Ethernet in training and inference workloads.

The company also developed networking architectures for scale-up, scale-out, and scale-across infrastructure. These systems employ advanced routing methods aimed at improving cluster efficiency, reliability, and traffic management. During 2026, Arista also earned inclusion in the Fortune 500 and achieved Gartner leadership status.

Third-Quarter Guidance

For the third quarter, Arista Networks projects revenue of approximately $3.3 billion. The company expects a non-GAAP operating margin between 48% and 49% and non-GAAP diluted earnings between $1.06 and $1.08 per share.

The guidance points to continued demand across cloud providers, enterprise campuses, data centers, and large-scale computing environments. Arista Networks has benefited from increased investment in faster networks built to support intensive computing workloads. Its unified operating software, EOS, and expanding Ethernet portfolio reinforce its competitive position across multiple infrastructure markets.

The after-hours stock advance extended the regular-session gain, as the results surpassed recent performance levels and reinforced confidence in Arista's growth trajectory.