Nasdaq rebalance: Sandisk in, Atlassian out
The Nasdaq‑100 rebalance added Sandisk and removed Atlassian, shifting index composition ahead of the new quarter. (x.com) Those changes will affect passive flows for funds tracking the index when they reweight holdings. (x.com)
Sandisk will join the Nasdaq-100 on April 20, replacing Atlassian in the benchmark that underpins some of the market’s biggest index funds. (markets.businessinsider.com) Nasdaq said the change takes effect before the market opens on Monday, April 20, 2026, with Sandisk entering under the ticker SNDK and Atlassian leaving under TEAM. The index tracks 100 of the largest non-financial companies listed on Nasdaq. (markets.businessinsider.com) Under Nasdaq’s current rules, the Nasdaq-100 is reconstituted by ranking eligible companies by market capitalization, and the methodology now in force stays in place through April 30, 2026. Nasdaq separately said an updated methodology will take effect on May 1, 2026. (indexes.nasdaq.com) (marketsmedia.com) The practical effect is mechanical buying and selling. Nasdaq said the Nasdaq-100 is tracked by more than 200 investment products with more than $600 billion in assets under management globally. (markets.businessinsider.com) That means funds built to mirror the index, including the Invesco QQQ Trust, have to add Sandisk and cut Atlassian when the new lineup becomes effective. A recent market data page listed QQQ at about $387 billion in assets under management. (markets.businessinsider.com) (wallstreetnumbers.com) Nasdaq’s methodology document says annual reconstitution normally happens in December, but index membership can also change outside that window when corporate events or replacement decisions require it. A 2023 Invesco note described Take-Two Interactive joining the index after Seagen was acquired by Pfizer. (indexes.nasdaq.com) (invescomutualfund.com) The latest change also lands as Nasdaq rewrites parts of the Nasdaq-100 rulebook. In a March 30 notice, Nasdaq said it had concluded a public consultation and would implement methodology changes, including a new fast-entry process, starting May 1. (mondovisione.com) (indexes.nasdaqomx.com) For Sandisk, the immediate milestone is simple: it becomes a Nasdaq-100 stock at the opening bell on April 20, and every fund tied to that index has to catch up the same day. (markets.businessinsider.com)
