LITE

Lumentum Holdings Inc. (LITE) stock has experienced significant positive momentum over the past six months, with its price increasing by 474.14% over the last 12 months and 156.56% year-to-date as of September 22, 2026. Key events impacting the stock include Nvidia's $2 billion strategic investment and a multi-year partnership in March 2026 to support Lumentum's optics technology and research, including funding for R&D and expansion of its AI-focused optical manufacturing footprint. Lumentum was promoted to the S&P 500 index in March 2026 and subsequently replaced CoStar Group in the Nasdaq-100 Index in May 2026. In August 2026, Lumentum reported strong Q4 2026 revenue of $1.01 billion and adjusted EPS of $3.23, exceeding expectations, and issued an upbeat forecast for Q1 2027 driven by accelerating AI demand, leading to a 13.6% climb in shares. In September 2026, Deutsche Bank and Evercore ISI initiated coverage with 'Buy' and 'Outperform' ratings respectively, citing Lumentum's critical technology for future optical networks and AI accelerator growth, while the CEO also raised long-term guidance. The acquisition of Cloud Light also contributed to a sharp rebound in revenue to $3.01 billion in FY2026.