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The Walmart-Nasdaq Transition: Index Inclusion and Market Dynamics
Walmart Joins the Nasdaq-100 on January 20, Replacing AstraZeneca
What happened
Nasdaq said $WMT (Walmart) will be added to the Nasdaq-100 on January 20, 2026, replacing $AZN (AstraZeneca). The change takes effect before the market opens, and Walmart will also be added to related Nasdaq-100 variants.
Why traders care
This is a classic “index inclusion” catalyst. Funds and ETFs that track the Nasdaq-100 must buy the new entrant and sell the company being removed around the effective date, which can create short-term, flow-driven price pressure and unusual volume.
Winners
Index inclusion and…
The skinny
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