Arista Networks (ANET) Stock Jumps 8.2% Following $105B TAM Expansion

Key Highlights

• At the Morgan Stanley Tech Conference on March 3, 2026, Arista Networks expanded its Total Addressable Market (TAM) from $60 billion to $105 billion.
• The company maintained its AI networking revenue projection of $3.25 billion for 2026.
• Total revenue is projected to exceed $10 billion this year, compared to $9 billion in the previous year.
• Piper Sandler upgraded its price target from $159 to $175, maintaining an Overweight rating.
• Shares of ANET climbed 8.2% on March 4, finishing at $134.83.

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Shares of Arista Networks (ANET) soared 8.2% on March 4, 2026, following a presentation at the Morgan Stanley Technology, Media & Telecom Conference where executives revealed an expanded market opportunity that exceeded analyst expectations.

Arista Networks, Inc., ANET

The shares finished trading at $134.83 after the March 3 investor presentation.

The primary catalyst for the rally was a significant TAM adjustment. The company increased its Total Addressable Market projection to $105 billion from its previous estimate of $60 billion—essentially doubling its assessment of the market opportunity.

Executives also maintained their 2026 AI networking revenue guidance of $3.25 billion, which accounts for approximately 30% of anticipated total revenue.

The company projects full-year revenue will surpass $10 billion, marking an increase from the $9 billion recorded in the previous fiscal year. Management indicated that as many as four customers could each represent over 10% of total revenue in 2026.

Beyond financial projections, the conference provided insight into Arista’s AI network infrastructure strategy. The company showcased its all-Ethernet AI spine and leaf architecture, featuring the 7800 AI Spine product operating at 800 gigabits as the cornerstone of scale-across implementations.

Arista is collaborating with data center operators on three distinct deployment approaches: scale-up, scale-out, and scale-across configurations.

Wall Street Response

The stock rally followed a target price adjustment from Piper Sandler issued on February 13. The investment firm increased its price objective to $175 from $159 and maintained its Overweight recommendation after Arista delivered quarterly results that exceeded consensus estimates.

Quarterly revenue reached $2.49 billion, surpassing the $2.38 billion analyst projection. Earnings per share of $0.82 beat the anticipated $0.76.

Piper Sandler highlighted Arista’s updated annual growth forecast of 25%, representing a five-percentage-point increase from its earlier guidance.

Supply Chain Considerations

During the conference, Arista executives identified an ongoing challenge: a memory shortage impacting customer deployments. Management estimated the issue could take approximately two years to resolve and noted the company is making strategic investments in chips, silicon, and memory to mitigate supply constraints.

This bottleneck warrants attention, especially as customer appetite for AI infrastructure shows no signs of slowing.

From a technical perspective, ANET currently trades above both its 50-day and 200-day moving averages. The immediate resistance level is positioned at $137.15. With a 52-week low of $59.43, the current price represents approximately 127% appreciation from that bottom.

The stock remains roughly 18% below its 52-week peak of $164.94.

Piper Sandler’s $175 price target implies approximately 30% potential upside from the March 4 closing price.

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