Moderna added to Nasdaq-100 Index; Warner Bros. Discovery removed
Nasdaq announced Moderna (MRNA) will join the Nasdaq-100 Index effective October 9, 2026, replacing Warner Bros. Discovery (WBD). The inclusion reflects Moderna's market-cap and liquidity criteria met for the large-cap tech-heavy benchmark.
How Oyticker scores a story: impact and confidence describe the information, not a probability that a price moves.
What happened
Nasdaq officially announced October 1, 2026 that Moderna will be added to the Nasdaq-100 Index prior to market open October 9, 2026, with Warner Bros. Discovery removed simultaneously.
Why it matters
Index inclusion triggers passive inflows from NDX-tracking funds and ETFs (QQQ, QQQM, etc.), mechanically increasing demand for MRNA shares and reducing demand for WBD. Inclusion signals Moderna meets size, liquidity and free-float thresholds; exclusion of WBD reflects relative decline in market weight or index criteria. Passive rebalancing typically occurs over the inclusion date, with price impact concentrated around the effective date.
Market transmission
First-order: passive index funds and ETFs tracking NDX must buy MRNA and sell WBD on or before October 9. Second-order: improved index inclusion may lower MRNA's cost of capital and increase institutional ownership; WBD faces selling pressure and potential negative sentiment from exclusion. Sector rotation effects minimal given both are within Nasdaq-100 universe.
What to watch
MRNA trading volume and price action on October 9 and surrounding days; magnitude of inflows into QQQ and other NDX-tracking vehicles; WBD price reaction and fund outflows; any announcement of index rebalancing details or timing.
Source:GlobeNewswire US
Oyticker provides market information and analysis for educational purposes. It is not investment advice: you remain responsible for your own decisions.