INDYFINANCE
2026-10-02 UTC
 
BREAKING STORY

Moderna Set to Join Nasdaq-100, Replacing Warner Bros. Discovery

The index swap takes effect October 9 and will force passive funds tracking the Nasdaq-100 to buy Moderna shares and sell Warner Bros. Discovery.

EquitiesMRNAWBD
Executive takeaway

Moderna will replace Warner Bros. Discovery in the Nasdaq-100 index on October 9, triggering mechanical buying and selling from index-tracking funds.

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Diverging paths set up the Nasdaq-100 swap. Moderna and Warner Bros. Discovery shares have moved in opposite directions in recent months, a backdrop that explains why one now qualifies for the index and the other does not.

Diverging paths set up the Nasdaq-100 swap

Moderna and Warner Bros. Discovery shares have moved in opposite directions in recent months, a backdrop that explains why one now qualifies for the index and the other does not.

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<figure><a href="https://www.indy.finance/news/moderna-set-to-join-nasdaq-100-replacing-warner-bros-discovery"><img src="https://www.indy.finance/news/moderna-set-to-join-nasdaq-100-replacing-warner-bros-discovery/graphic.svg" alt="Diverging paths set up the Nasdaq-100 swap" width="1200" height="675"></a><figcaption>Diverging paths set up the Nasdaq-100 swap — <a href="https://www.indy.finance/news/moderna-set-to-join-nasdaq-100-replacing-warner-bros-discovery">Indy Finance</a></figcaption></figure>
Moderna will join the Nasdaq-100 on October 9, taking the spot vacated by Warner Bros. Discovery, according to index announcements reported October 1. The change is a routine index rebalancing rather than a reflection of either company's recent earnings or guidance. The effect is mostly mechanical: funds and ETFs that track the Nasdaq-100 must buy Moderna shares and sell Warner Bros. Discovery shares to match the new index composition, which can create short-term buying pressure on Moderna and selling pressure on Warner Bros. Discovery around the effective date. For Moderna, inclusion also raises its visibility among passive investors who otherwise would not hold the stock. What the move does not tell investors is anything about Moderna's underlying business momentum or Warner Bros. Discovery's reasons for falling out of the index's size or liquidity thresholds. Those remain separate questions for each company's fundamentals.
What would change this view

If Nasdaq reverses or delays the scheduled October 9 effective date, the anticipated rebalancing flows into Moderna and out of Warner Bros. Discovery would not occur as described.

Wire sources cited

Produced automatically by the INDY NEWS Desk from the public wire sources cited above, and checked against them before publication. Market commentary, not investment advice.