Arista Networks stock jumps 5% as AI-switch demand stays front and center
New York, Jan 14, 2026, 05:30 EST — Premarket Shares of Arista Networks climbed 5.3% on Tuesday, closing at $129.93, and were steady near that mark ahead of Wednesday’s session. (MarketWatch) This move is significant as Arista effectively serves as a barometer for investment in the infrastructure powering artificial intelligence—specifically the high-speed networks linking servers within data centers. The firm provides networking equipment tailored for large AI setups, data centers, campus networks, and routing operations. (Reuters) A Zacks Equity Research note released Tuesday zeroed in on Arista’s switch lineup amid rising demand for faster Ethernet in today’s data centers. The