Markets Lumentum Shares Surge 15% on Strong Earnings as Broadcom Tumbles Nearly 5% Amid Downgrade and Security Concerns August 14, 2026 Lumentum Reports Strong Quarterly Performance Lumentum shares surged 15% after the company reported fiscal Q4 2026 revenue of $1.01 billion, more than doubling year-over-year results and beating analyst expectations. The…