New York, January 5, 2026, 15:24 EST — Regular session
- Lumentum Holdings shares were down 7.6% at $356.69 in afternoon trading.
- Other optics and networking names also fell, including Coherent, Ciena and Applied Optoelectronics.
- The pullback follows a sharp run that put Lumentum near its late-December peak, with investors now looking to the next earnings report and near-term industry events for clues on AI-driven demand.
Shares of Lumentum Holdings Inc fell about 7.6% on Monday, extending a selloff across parts of the optical networking space even as the broader U.S. equity market held higher.
The slide matters because Lumentum has been one of the standout winners tied to the buildout of AI data centers, leaving little room for disappointment as investors refocus on valuation and the next set of results. Lumentum closed at $386.11 on Friday, close to the 52-week high of $401.60 it hit on Dec. 24, and the stock is up about 326.9% over the past year, Zacks Investment Research wrote.
Lumentum sells lasers and optical components used in high-speed links inside and between data centers, and investor attention has centered on whether demand from the largest cloud operators stays strong in 2026. Zacks said the company estimates more than 60% of its current revenue comes from AI infrastructure and cloud.
At 3:24 p.m. EST, Lumentum was trading at $356.69 after swinging between $345.00 and $394.48, with about 4.9 million shares traded.
The weakness was not isolated. Coherent was down about 4.3%, Ciena fell about 7.6% and Applied Optoelectronics slid about 11.6%, while the Invesco QQQ Trust was up about 0.8%.
A Zacks note earlier Monday pointed to stretched valuation, citing Lumentum’s forward price-to-sales ratio — a measure of market value relative to revenue — of 9.18 times, above the levels it cited for peers.
In its latest earnings release, Lumentum forecast fiscal second-quarter revenue of $630 million to $670 million and non-GAAP earnings per share of $1.30 to $1.50. Non-GAAP figures exclude certain items such as stock-based compensation to give what companies say is a clearer view of underlying performance.
CEO Michael Hurlston said in that release: “With our broad optical portfolio, we are well positioned to support the rapid expansion of AI compute.” Investors will be looking for the same theme to carry through the next update, with management expected to discuss cloud transceivers, optical circuit switches and co-packaged optics — technologies aimed at moving more data with less power. Q4 Capital
Zacks pegged its consensus estimate for the fiscal second quarter at $1.40 per share on revenue of $652.4 million, and said the stock remained above its 50-day and 200-day moving averages — technical markers traders use to gauge trend.
The risk for bulls is that premium valuations can unwind quickly if hyperscaler spending slows, product mix shifts toward lower-margin lines, or supply and demand in key laser components normalizes. Lumentum has warned that macro volatility, customer demand changes, supplier performance and product-mix swings can all affect results.
Investors now watch for the next earnings report, which Investing.com lists as Feb. 5, and for any read-through from industry events in the coming weeks. Lumentum’s newsroom lists Photonics West in San Francisco on Jan. 20–22 as its next event.
