Snapshot from Jun 08, 2026 at 07:00 UTC. For live data and tracking: View Live
Events / Business / Lumentum joins Nasdaq-100, CoStar exits
Business index change

Lumentum joins Nasdaq-100, CoStar exits

Analysis based on 6 articles · First reported May 09, 2026 · Last updated May 09, 2026

Sentiment
10
Attention
2
Articles
6
Market Impact
Direct
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Market Impact

The market impact is primarily on the individual stocks involved. Lumentum Inc. may see increased investor interest and potential price appreciation due to its inclusion in the Nasdaq-100 Index, while CoStar Group, Inc. might experience some negative sentiment from its removal.

Financial services Technology
Event Summary

Nasdaq-100 announced that Lumentum Inc. will be added to the Nasdaq-100 Index, replacing CoStar Group, Inc. This change will take effect prior to market open on Monday, May 18, 2026. The Nasdaq-100 Index tracks the performance of 100 of the largest Nasdaq-listed non-financial companies and is a significant benchmark for many investment products.

Key Actions
100 Nasdaq-100 proposed new rule
95 Lumentum will join Nasdaq-100
95 CoStar Group will be replaced Nasdaq-100
Entities Involved
index
Nasdaq-100
The Nasdaq-100 Index is undergoing a component change, with Lumentum Inc. replacing CoStar Group, Inc.
Importance 100 Sentiment 0
stock
Lumentum
Lumentum Inc. will join the Nasdaq-100 Index, which is generally seen as a positive development for the company.
Importance 90 Sentiment 20
stock
CoStar Group
CoStar Group, Inc. will be replaced in the Nasdaq-100 Index, which could be perceived negatively by investors.
Importance 90 Sentiment -10
index
Nasdaq-100
Nasdaq-100 announced the change in the Nasdaq-100 Index.
Importance 80 Sentiment 0
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