Ciena Corporation CIEN

Arista Networks (ANET) stock costs 63.2 times earnings, against 21.9 for the S&P 500. You can be paid now to agree to buy the shares at a much lower price. So how much income can you earn this way, and would you be glad to own Arista at that price.

Rising Treasury yields are rattling markets heading into the final trading day of Q3, and Wall Street analysts are making bold moves on a wide range of stocks from big-box retail to AI infrastructure. Find out who got cut and who got a fresh vote of confidence.

Arista Networks (ANET) stock trades at 58.3 times its last twelve months of adjusted earnings, which add back stock-based pay after tax. That is a high price for one year of profit, and it is why the stock looks expensive. The picture changes against the profit forecast for this year and next. Here is that same share price, set against the profit Arista is forecast to earn in fiscal 2026 and fiscal 2027.

Ciena has notably outperformed the Nasdaq over the past year, and analysts are highly optimistic about the stock’s prospects.

Ciena Corporation recently held a special call where analysts highlighted its strong positioning in optical networking as artificial intelligence infrastructure expands across global data centers. Analyst upgrades and upward earnings estimate revisions point to growing confidence that Ciena can capture rising demand for high-bandwidth AI connectivity. Next, we’ll examine how this AI-driven demand for optical networking could reshape Ciena’s investment narrative and future growth...

With optical connectivity, Ciena could find itself selling one of the most important solutions.

RESEARCH REPORTS These reports, excerpted and edited by Barron’s, were issued recently by investment and research firms. The reports are a sampling of analysts’ thinking; they should not be considered the views or recommendations of Barron’s.

The global private 5G market is projected to grow from USD 5.35 billion in 2026 to USD 24.84 billion by 2032, at a 29.1% CAGR. Growth is driven by Industry 4.0, industrial automation, IIoT, robotics, computer vision, and demand for secure, ultra-reliable low-latency connectivity. Mid-band spectrum is expected to record the fastest growth, while manufacturing led the market in 2025. The US held the largest North American share, supported by CBRS availability and advanced digital infrastructure. K

Ciena Corporation (NYSE:CIEN) is positioned to benefit from the growing importance of optical networking as artificial intelligence infrastructure expands. As AI data centers scale, the need to move massive volumes of data between GPUs, servers, and data centers is driving demand for faster and higher-bandwidth optical connectivity. Wall Street’s view on Ciena has shifted sharply. […]

Arista Networks (ANET) ended fiscal Q2 2026 with about $9.7 billion of multi-year purchase commitments. These are promises to buy from its suppliers over several years. If demand for its switches slows, those promises remain. Will the company's sales keep pace with what it has promised its suppliers.

Wall Street is revising assumptions about these S&P 500 stocks thanks to booming AI backlogs and transformed fundamentals.

Key Stats for Ciena StockPrice change for Ciena stock in last 1 year: 164%$CIEN Stock Price as of Sep. 22: $36952-Week High: $638$CIEN Stock Price Target: $517What Happened?Ciena (CIEN) stock got a big vote of confidence on Monday after Evercore ISI upgraded the company to Outperform and raised its price target sharply, from $375 to $550.