Atlassian faces removal from the Nasdaq 100 index in April 2026 under a fast-exit rule. The company's stock price plunged approximately 50% over the last three months. This decline pushed its index weighting significantly below the required threshold.

Investor concerns regarding AI's impact on traditional software models and a broader sector downturn drove the 2026 decline. Passive funds tracking the index must sell Atlassian shares if the delisting occurs. This forced selling could create additional downward pressure on the stock price.