Sandisk Corporation to Join the Nasdaq-100 Index® Beginning April 20, 2026

Sandisk (Nasdaq: SNDK) will join the Nasdaq-100 Index (NDX) prior to market open on April 20, 2026, replacing Atlassian (Nasdaq: TEAM).

Rhea-AI Summary

Sandisk (Nasdaq: SNDK) will join the Nasdaq-100 Index (NDX) prior to market open on April 20, 2026, replacing Atlassian (Nasdaq: TEAM). The change follows the Nasdaq-100 methodology in effect through April 30, 2026 and updates index components for that rebalancing period.

Positive

• Sandisk (SNDK) added to Nasdaq-100 effective April 20, 2026
• Sandisk replaces Atlassian (TEAM) in the Nasdaq-100 component list

Negative

• Atlassian (TEAM) will be removed from the Nasdaq-100 effective April 20, 2026

Argus Apr 13 session

+3.60% close to close Open Argus

Details

News Market Reaction – NDAQ

On Apr 13, the first trading day after this news, NDAQ closed 3.60% above the previous close.

Data tracked by StockTitan Argus for the Apr 13 session.

Key Figures

Announcement date: April 10, 2026 Index inclusion date: April 20, 2026 Methodology effective through: April 30, 2026 +1 more

Announcement date

April 10, 2026

Press release date for index change notice

Index inclusion date

April 20, 2026

Date Sandisk to join Nasdaq-100 Index prior to market open

Methodology effective through

April 30, 2026

Current Nasdaq-100 Index methodology validity end date

Index name

Nasdaq-100 Index

Benchmark index gaining Sandisk as a component

Historical Context

5 past events · Latest: Apr 08

5 events

1. Apr 08

   Volume statistics

   24h Move

   -4.4%

   Reported March 2026 volumes and 1Q26 statistics for Nasdaq markets.

2. Apr 01

   Earnings call scheduled

   24h Move

   +1.8%

   Announced schedule and details for the 1Q26 investor conference call.

3. Mar 30

   Index methodology update

   24h Move

   +2.5%

   Concluded consultation and approved updates to Nasdaq-100 Index rules.

4. Mar 24

   Short interest report

   24h Move

   -0.6%

   Released mid-month open short interest positions for Nasdaq securities.

5. Mar 23

   Trading halt notice

   24h Move

   +0.1%

   Announced trading halt in American Rebel Holdings pending more information.

24h Move is the share-price change in the day after each event; other market factors may also have contributed.

Key Terms

Nasdaq-100 Index, NDX, Nasdaq Indexes

3 terms

Nasdaq-100 Index technical

"Sandisk Corporation (Nasdaq: SNDK) will become a component of the Nasdaq-100 Index® (NDX®)"

A stock market index made up of the 100 largest non-financial companies listed on the Nasdaq exchange, ranked by the total value of their publicly traded shares. Think of it as a single basket or scoreboard that tracks how a group of prominent, mostly tech- and growth-oriented firms are performing together; investors use it as a benchmark to gauge market trends, build funds or ETFs, and get broad exposure to large-cap Nasdaq-listed stocks.

NDX technical

"component of the Nasdaq-100 Index® (NDX®) replacing Atlassian Corporation"

The Nasdaq-100 Index (commonly shown as NDX) is a stock-market benchmark made up of the 100 largest non‑financial companies listed on the Nasdaq exchange, arranged so bigger companies have more influence. Think of it as a single basket holding many large U.S. growth and technology stocks; its movement shows how that segment of the market is doing. Investors use it to track performance, price index funds and trade derivatives tied to broad tech and growth exposure.

Nasdaq Indexes technical

"including notifications on changes to any Nasdaq Indexes, please go to"

NASDAQ indexes are groups of stocks from the NASDAQ stock market bundled together to measure how particular slices of the market are performing, such as technology firms or small companies. Think of them as scoreboards or league tables that summarize broad market trends; investors use them to compare performance, set benchmarks, build passive funds, and gauge overall risk and opportunity without tracking individual companies.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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NEW YORK, April 10, 2026 (GLOBE NEWSWIRE) -- Nasdaq (Nasdaq: NDAQ) today announced that Sandisk Corporation (Nasdaq: SNDK) will become a component of the Nasdaq-100 Index^® (NDX^®) replacing Atlassian Corporation (Nasdaq: TEAM) prior to market open on Monday, April 20, 2026.

These updates are consistent with the current Nasdaq-100 Index^® methodology, in effect through April 30, 2026. For additional information, including notifications on changes to any Nasdaq Indexes, please go to https://indexes.nasdaq.com/

About Nasdaq Global Indexes

Nasdaq Global Indexes is one of the world's leading index providers, offering a comprehensive suite of rules-based benchmarks and indexes. The Nasdaq-100 Index^® — which measures the performance of 100 of the largest Nasdaq-listed non-financial companies — is tracked by more than 200 investment products with over $600 billion in assets under management globally. Nasdaq Global Indexes publishes and maintains more than 35,000 indexes across asset classes and geographies.

About Nasdaq

Nasdaq (Nasdaq: NDAQ) is a leading technology platform that powers the world’s economies. We architect the world’s most modern markets, power the innovation economy, and build trust in the financial system. We empower economic opportunity by designing and deploying markets, technology, data, and advanced analytics that enable our clients to capture opportunities, navigate risk, and strengthen resilience. To learn more about the company, technology solutions and career opportunities, visit us on LinkedIn, on X @Nasdaq, or at www.nasdaq.com.

Nasdaq^®, Nasdaq-100 Index^® and NDX^® are registered trademarks of Nasdaq, Inc. The information contained above is provided for informational and educational purposes only, and nothing contained herein should be construed as investment advice, either on behalf of a particular financial product or an overall investment strategy. Neither Nasdaq, Inc. nor any of its affiliates makes any recommendation to buy or sell any financial product or any representation about the financial condition of any company or fund. Statements regarding Nasdaq’s proprietary indexes are not guarantees of future performance. Actual results may differ materially from those expressed or implied. Past performance is not indicative of future results. Investors should undertake their own due diligence and carefully evaluate companies before investing. ADVICE FROM A SECURITIES PROFESSIONAL IS STRONGLY ADVISED.

Media Contacts:
Maximilian Leitenberger
Maximilian.leitenberger@nasdaq.com

Issuer & Investor Contact
Index Client Services
Indexservices@nasdaq.com

-NDAQG-

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

When will Sandisk (SNDK) officially join the Nasdaq-100 index?

Sandisk will join the Nasdaq-100 prior to market open on April 20, 2026. According to Nasdaq, the change takes effect on that trading day as part of the index component update schedule.

Which company is being removed when Sandisk (SNDK) enters the Nasdaq-100 on April 20, 2026?

Atlassian (Nasdaq: TEAM) is being replaced in the Nasdaq-100 effective April 20, 2026. According to Nasdaq, TEAM will exit the index as part of the rebalancing that day.

How does Nasdaq describe the methodology change tied to the April 20, 2026 index update?

Nasdaq says the update is consistent with the current Nasdaq-100 Index methodology in effect through April 30, 2026. According to Nasdaq, component changes follow that methodology and regular index rules.

Will the Nasdaq-100 membership change for Sandisk (SNDK) affect index composition immediately?

Yes, the membership change is effective prior to market open on April 20, 2026. According to Nasdaq, the component list will reflect Sandisk instead of Atlassian on that trading day.

Where can investors find official notices about the Nasdaq-100 change involving Sandisk (SNDK)?

Official notices and index change details are available on Nasdaq's index website and notifications page. According to Nasdaq, additional information and updates are posted at the Nasdaq indexes portal.