Nasdaq Announces June 2026 Index Rebalance; Astera Labs to Join Nasdaq-100

Key Facts

1Nasdaq announced the results of the June 2026 quarterly rebalance of the Nasdaq-100 Index.

2Astera Labs, Inc. will be added to the Index as one of five new companies.

3The changes will become effective prior to market open on Monday, June 22, 2026.

This scheduled adjustment ensures the index accurately reflects the top non-financial companies listed on the Nasdaq Stock Market. Nasdaq has officially announced the results of its June 2026 quarterly rebalance, confirming that Astera Labs, Inc. will be added to the Nasdaq-100 as one of five new constituents. These changes are set to become effective prior to the market open on Monday, June 22, 2026.

The inclusion comes amid significant momentum for AI infrastructure providers, with Astera Labs shares surging approximately 11% in after-hours trading to $383.50 per Investing.com reports. Joining Astera in the index are CoreWeave, Rocket Lab, Nebius Group, and Teradyne, while companies being removed include Zscaler and Charter Communications. With over $800 billion in assets under management tracking the Nasdaq-100 per official exchange data, these additions typically trigger substantial institutional buying from passive funds.

Regarding NDAQ stock performance, it stood at $86.72 at close on June 10, 2026, maintaining a daily range between $86.64 and $87.83 according to market data. Traders should watch for the upcoming ex-dividend date for NDAQ on June 12, 2026, as well as the index rebalance implementation on June 22, which serves as a primary liquidity catalyst for the affected instruments.