Lumentum Jumps 15% After S&P 500 Addition and 65.5% Q2 Revenue Surge
Lumentum rose 15% after official addition to the S&P 500 triggered mechanical buying by index funds. The company posted Q2 FY2026 revenue of $665.5M, up 65.5% year-over-year, and guided Q3 revenue of $780M–$830M, implying over 85% growth.
1. S&P 500 Inclusion Fuels Buying
Lumentum was officially added to the S&P 500 during the latest rebalancing, compelling passive index funds to purchase shares and driving the stock up roughly 15% in one session.
2. Q2 FY2026 Results Exceed Expectations
The company reported Q2 FY2026 revenue of $665.5 million, a 65.5% increase year-over-year, with non-GAAP operating margin expanding to 25.2%, reflecting strong demand across its optics segments.
3. Aggressive Q3 Revenue Guidance
Management guided Q3 FY2026 revenue between $780 million and $830 million, implying more than 85% year-over-year growth, supported by expanding data center and telecommunications deployments.