Lumentum Joins Nasdaq 100 Index on May 18

Optical component manufacturer Lumentum (Nasdaq: LITE) will officially be included in the NASDAQ-100 Index before the market opens on May 18, 2026 (Monday), replacing the position of commercial real estate data platform CoStar Group Inc. (Nasdaq: CSGP).

This adjustment is the result of the regular review of the NASDAQ-100 Index components. The NASDAQ-100 Index tracks the 100 largest non-financial companies listed on the NASDAQ exchange, is widely regarded as an important barometer of the health of the technology industry, and is also the benchmark index for tracking ETF products (such as QQQ) with a size of hundreds of billions of dollars.

Stock Price Has More Than Doubled This Year

The news of being included in the NASDAQ-100 Index will lead to a large number of passive funds buying LITE shares. Data shows that Lumentum's stock price has risen by about 145.2% this year, with the latest closing price at $903.8, making it one of the best-performing stocks in the S&P 500 Index this year.

On the performance front, Lumentum's revenue for the third fiscal quarter increased by 90% year-on-year, reaching a historical high of $808 million; earnings per share reversed from a loss of $0.64 in the previous year to a profit of $1.99, significantly exceeding analysts' expectations.

AI Infrastructure Demand Boom

Lumentum CEO Michael Helston previously stated that market demand for the company's products has far exceeded existing supply capabilities, with orders already booked until 2028. He pointed out that the demand for optical interconnect components used to connect GPU clusters is growing much faster than the expansion of production capacity.

Analysts believe that as next-generation technologies such as co-packaged optical components (CPO) and optical switchboards begin to commercialize and increase in volume, Lumentum's profitability is expected to further improve. Lumentum will also attend the J.P. Morgan Global Technology, Media and Communications Conference (TMC Conference) on May 18, where it will provide the market with the latest business outlook.