Key Highlights

  • Arista Networks (NYSE:ANET) reported Revenue of about USD 3.66 billion, up 58.5%, and guided the fourth quarter to USD 3.9 billion to USD 4.0 billion, against about USD 3.6 billion expected.
  • Fabrinet (NYSE:FN) rose 15.5% on November 3, 2026, after revenue of USD 1,474.5 million, up about 51%, and a December-quarter guide of USD 1.6 billion to USD 1.65 billion.
  • Lumentum (NASDAQ:LITE) fell 18.59% on November 2 after agreeing to a share-based deal worth about USD 1,132 a share, a premium of about 23.9% to its unaffected October 28 close.
  • Marvell Technology (NASDAQ:MRVL) fell 12.72% on November 2 after agreeing to buy Lumentum in an all-stock deal at an implied Enterprise value of USD 115 billion.

Arista Networks (NYSE:ANET): The Fastest Growth Since Its IPO

Arista Networks (NYSE:ANET) announced third-quarter results on November 3, 2026. Revenue of about USD 3.66 billion rose 58.5% from a year earlier. CEO Jayshree Ullal described it as the fastest year-on-year growth since the company's initial public offering. The result beat the company's own guidance of about USD 3.3 billion and a published consensus of USD 3.33 billion. Non-GAAP Earnings reached USD 1.20 a share, against USD 0.77 a year earlier, and the non-GAAP Operating Margin hit 49.1%. GAAP gross margin slipped to 63.6% from 64.6%, which can reflect large cloud and AI customers negotiating discounts. Fourth-quarter revenue is guided to USD 3.9 billion to USD 4.0 billion. ANET shares rose more than 6% after hours in one published account. The company sells to a small number of large Data Center customers, so a cut in AI Capital budgets could slow orders quickly, and one fast quarter does not establish a trend. Arista must also manage component costs, including memory, and face competition from larger rivals, and large customers may build more of their own networking.

Fabrinet (NYSE:FN): The Contract Manufacturer Behind Optical Links

Fabrinet (NYSE:FN) reported fiscal first-quarter 2027 results on November 2, 2026, for the quarter ended September 25. Revenue was USD 1,474.5 million, up about 51% from USD 978.1 million, and non-GAAP Net Income came to USD 157.4 million, against USD 105.3 million. Non-GAAP earnings of USD 4.34 a share compare with USD 2.92 a year earlier. FN shares rose about 10% after hours and closed up 15.5% on November 3. Fabrinet builds complex optical and electro-mechanical products for other companies, and optical parts matter for AI because data centers need fast links between processors. Guidance for the quarter ending December 25 is USD 1.6 billion to USD 1.65 billion of revenue, a midpoint about 10% above the latest quarter, simple arithmetic. The release lists reliance on a small number of customers as a risk, and coverage says the shares fell about 7% after hours following the August report despite a beat. Cash and short-term investments together total about USD 755.7 million, a cushion against a downturn. A contract manufacturer earns a fee for assembly and testing, so revenue can swing with a few large programmes, and thin margins make factory utilisation important.

Lumentum (NASDAQ:LITE): A Fast-Growing Target With a Fixed Ratio

Lumentum (NASDAQ:LITE) holders will receive 4.500 Marvell shares for each Lumentum share under the agreement announced on November 2, 2026. The terms imply about USD 1,132 per Lumentum share, a premium of about 23.9% to the unaffected October 28 close, and LITE stock fell 18.59% on November 2 as the Marvell price dropped. Lumentum reported fiscal first-quarter revenue of USD 1.26 billion and earnings of USD 4.57 a share, and guided December-quarter revenue to USD 1.60 billion and earnings to USD 6.05, so its target is growing quickly. Closing needs both Shareholder votes, regulatory approvals and a Form S-4, and is expected in the first half of 2028. Because the exchange ratio is fixed, the value LITE holders receive moves with the Marvell share price. Several analysts downgraded after the announcement, and a review that includes China, integration of two large engineering organisations and customer conflict are the main risks for Lumentum (NASDAQ:LITE) holders. Lumentum's own growth is part of why the deal is priced so richly, and any fall in the Marvell price lowers what its shareholders receive at closing.

Marvell Technology (NASDAQ:MRVL): Buying Optical Scale With Stock

Marvell Technology (NASDAQ:MRVL) will pay entirely in stock, so no new financing is needed. The company says the combination covers electrical and optical interconnect, switching, custom silicon, lasers, transceivers and optical circuit switching, and it cites an expanded addressable market of USD 550 billion, a company estimate. Marvell holders would own about 67% of the combined company. MRVL identified more than USD 1 billion of annual run-rate cost synergies and expects non-GAAP earnings accretion in year one after closing. Matt Murphy stays as Chairman and CEO, and three Lumentum directors, including CEO Michael Hurlston, join a seven-member Marvell board. BofA cut Marvell to Neutral from Buy and reduced its target to USD 225 from USD 400, citing roughly 50% share-count dilution, a long regulatory review and channel conflict. The shares fell 12.72% on November 2. Integrating two large engineering organisations and clearing the regulatory path are the key tests for Marvell Technology (NASDAQ:MRVL). The aim is pre-validated, co-designed optical solutions that shorten customers' time to market, a claim investors will want to see in orders.

Where Things Stand

Arista Networks (NYSE:ANET) is the clearest winner on current evidence, having posted 58.5% growth and guided above published estimates, although it depends on a few very large customers. Fabrinet (NYSE:FN) is a high-growth supplier with thin contract margins, and its 15.5% rise shows the market rewards optical exposure. The sector also lost about USD 5 trillion in value between October 6 and November 2, per one published tally, which shows how quickly sentiment can reverse. The Marvell and Lumentum combination is a bet that co-designed optical and electrical products will win share, but it will not close until the first half of 2028, and the market has already marked down both stocks. The next catalysts are the fourth-quarter reports, the shareholder votes and the regulatory review. No single name is assured of winning the race. Nothing here is Investment advice.