Quick Summary
- Shares of Lumentum climbed 16% to reach $1,053.09 on Monday following Nasdaq’s announcement that the company will enter the Nasdaq 100 index on May 18, taking CoStar Group’s place.
- Index inclusion created automatic buying pressure from passive funds that track the benchmark, amplifying the stock’s existing upward trajectory.
- The company delivered all-time high Q3 revenue of $808.4 million, representing 90% growth compared to the previous year, while gross margin improved by 540 basis points sequentially.
- Fellow optical technology companies Coherent and Corning experienced gains of 13% and 11% respectively, each achieving record session closes.
- Year-to-date performance shows Lumentum up 186%, with a remarkable 1,300% surge over the trailing 12-month period, supported by Nvidia’s $2 billion capital commitment.
Shares of Lumentum (LITE) achieved an all-time closing peak of $1,053.09 on Monday, May 12, jumping 16% following Nasdaq’s confirmation that the optical components manufacturer will become a Nasdaq 100 constituent on May 18, displacing CoStar Group (CSGP).
The performance positioned Lumentum as the leading gainer within the S&P 500 during Monday’s trading. By comparison, the benchmark S&P 500 and Dow Jones Industrial Average each advanced a modest 0.2% during the same period.
The Nasdaq 100 represents the largest 100 non-financial corporations listed on the Nasdaq stock market. Index inclusion necessitates purchases by all passively managed funds that replicate the benchmark. This automatic buying pressure materialized rapidly in the market.
Lumentum has appreciated 186% during the current calendar year. Looking back twelve months, shares have multiplied more than 1,300%.
The index promotion arrived shortly after Lumentum unveiled fiscal Q3 2026 financial results on May 5. Top-line performance reached $808.4 million — establishing a new company milestone and representing 90% year-over-year expansion. The stock experienced approximately 10% weakness on May 6 and May 7 after revenue figures, though impressive, fell short of Street consensus estimates that had become elevated. A Friday recovery preceded Monday’s definitive breakout.
Profitability Improvements Highlight Operational Excellence
Chief Executive Officer Michael Hurlston emphasized margin progression as the critical narrative. Gross margin demonstrated 540 basis points of sequential improvement. Operating margin expanded by 700 basis points during the same comparative timeframe.
Adjusted EPS registered at $2.37 for the third quarter, contrasting with $0.57 during the equivalent period one year earlier. GAAP-basis net income totaled $144.2 million, a substantial reversal from the $44.1 million deficit recorded in Q3 FY2025.
Balance sheet strength improved as the company concluded the quarter holding $3.17 billion in cash and liquid securities, reflecting a $2.02 billion increase from the preceding quarter, primarily attributable to a Series A Convertible Preferred Stock offering completed in March 2026.
Looking toward Q4, Lumentum provided revenue guidance spanning $960 million to $1.01 billion — implying approximately 18% sequential acceleration from Q3’s already-record performance. Adjusted EPS projections range from $2.85 to $3.05.
Industry Peers Experience Parallel Momentum
Lumentum’s advance wasn’t isolated on Monday. Coherent appreciated 13% to close at $379.69 while Corning surged 11% to finish at $207.39. The three optical networking enterprises occupied the S&P 500’s top three positions for the trading day, with both Coherent and Corning similarly establishing record closing values.
Coherent has generated 106% returns year-to-date. Corning has delivered 136% performance during the current year and 342% appreciation over the past twelve months.
Nvidia disclosed $2 billion equity investments in both Lumentum and Coherent during March, accompanied by multi-billion-dollar product procurement agreements with each enterprise.
Bank of America elevated Corning to its “U.S. 1 List” on Monday — the investment bank’s curated selection of top investment ideas.
Hurlston highlighted co-packaged optics and optical circuit switches as emerging growth catalysts still in nascent phases. “As our key growth drivers of co-packaged optics and optical circuit switches begin to kick in,” he stated, “we would expect further increases in earnings power.”
