SpaceX Weight in Nasdaq 100 Will Rise to 2.82%
The aerospace company will see its influence on the major stock index more than double starting this Monday.
Updated on Sept. 19, 2026 in Space
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SpaceX will see its weighting within the Nasdaq 100 index increase to 2.82% on September 21, 2026. This adjustment follows a calculation based on the index's closing price from the preceding Friday.
Why it matters
The rebalancing of the Nasdaq 100 reflects the growing financial scale of the aerospace sector in the broader stock market. Changes in index weighting influence how institutional funds and passive investment products allocate capital across their portfolios.
The final weighting of 2.82% was determined using the index closing price from September 18, 2026. This figure marks a significant increase from the previous 1.28% weight.
The players
SpaceX
SpaceX is an aerospace manufacturer and space transportation services company that is now a major component of the Nasdaq 100.
Nasdaq 100
The Nasdaq 100 is a stock market index comprising 100 of the largest non-financial companies listed on the Nasdaq Stock Market.
The details
The Nasdaq 100 index rebalance is scheduled to take effect as markets open on Monday. The move elevates the prominence of SpaceX within the technology-heavy benchmark.
Timeline
September 18, 2026: The final weighting calculation was finalized using the Friday closing price.
September 21, 2026: The index rebalance takes effect.
The Big Picture
This rebalance follows the standard procedural guidelines set by the Nasdaq 100 Methodology. It signals a shift in the index's composition as the aerospace industry gains larger market representation.
Investors holding funds tied to the Nasdaq 100 will see their exposure to SpaceX increase automatically as the index rebalances. This shift may impact the overall volatility and performance of technology-focused exchange-traded funds.
The takeaway
Investors should review their portfolio holdings to ensure that increased concentration in the aerospace sector aligns with their long-term financial goals. Periodic index rebalancing is a standard market mechanism that necessitates occasional adjustments to passive investment strategies.
Further reading
For more on the industry, visit Space.
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