Lumentum Holdings to join Nasdaq-100 Index on May 18, 2026, replacing CoStar Group.

Nasdaq announced that Lumentum Holdings Inc. will be added to the Nasdaq-100 Index starting May 18, 2026, replacing CoStar Group. This change reflects Lumentum's growth and significance among the largest non-financial companies listed on Nasdaq. The Nasdaq-100 Index is widely tracked by investment products managing over $600 billion globally, making this inclusion notable for investors. Market participants should monitor the transition as it may impact related investment funds and portfolios.