SpaceX Nasdaq-100 weighting to double to 2.82% in quarterly rebalance
SpaceX’s weighting in the Nasdaq-100 Index is expected to rise from approximately 1.28% to about 2.82% following the index’s quarterly rebalance, effective September 18, 2026. The increase is driven by the expiration of post-IPO share lockup periods, which raises the company’s free float. Index-tracking funds managing roughly $1.7 trillion in assets are anticipated to buy billions of dollars in SpaceX shares to adjust. The final weighting was calculated based on Friday’s closing prices.
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SpaceX Weight Set at 2.82% in Nasdaq 100 Index Rebalancing
According to a report from financial data provider jin10, the weight of SpaceX (ticker SPCX.O) in the Nasdaq 100 Index has been determined for the current index rebalancing period. The company's weight has been set at 2.82%. This figure indicates the proportion of the index's total market capitalization that is represented by SpaceX's stock, reflecting its relative size and influence within the index. The rebalancing is a routine adjustment to the index's composition, which is typically based on market capitalization and other eligibility criteria. The announcement provides investors with a key data point for tracking the index's performance and the impact of SpaceX's inclusion.
SpaceX Weight in Nasdaq 100 Index to Rise to 2.82% After Rebalancing
According to data cited by Cailian Press, SpaceX's weight in the Nasdaq 100 Index is set to increase to 2.82% following the index's quarterly rebalancing, which takes effect on Monday. This represents a significant jump from its current weight of approximately 1.28%. The final figure, calculated based on Friday's closing prices, aligns with the preliminary weights previously announced by the index provider. The report highlights the growing influence of SpaceX within the tech-heavy index.
Read sourceSpaceX Nasdaq-100 Weighting to Double, Forcing Index Funds to Buy Billions
SpaceX (NASDAQ: SPCX) is set to more than double its weighting in the Nasdaq-100 Index at the quarterly rebalance on September 18, 2026, due to the expiration of post-IPO lockups that increase its public float. The article, attributed to MarketBeat analyst Jeffrey Neal Johnson, reports that index-tracking funds managing about $1.7 trillion benchmarked to the Nasdaq-100 will be forced to buy between $15.5 billion and $22 billion in SpaceX shares to adjust. This rebalance follows SpaceX's IPO on June 12, 2026, and its initial index entry on July 7, where a float cap limited its weighting to 1.28%. The article notes SpaceX's strong second-quarter revenue growth of 91.9% year-over-year but cautions that its price-to-sales multiple of roughly 106x reflects a demanding valuation against Treasury yields near 4.79%. The author advises caution against expecting a sustained price surge from the rebalance, citing historical precedent from SpaceX's July index entry and upcoming lockup expirations of over 2.3 billion shares.
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SpaceX Weighting in Nasdaq-100 Index Expected to Rise to 2.82%
According to preliminary data released late Friday by Nasdaq Global Index Watch, SpaceX's weighting in the Nasdaq-100 Index is expected to rise from approximately 1.28% to about 2.82%. Final weightings will be determined later this month. Wall Street anticipates that this change will trigger billions of dollars in additional buying from index funds and exchange-traded funds tracking the benchmark. SpaceX's currently relatively low weighting dates back to its inclusion in the index in July, when most of the company's shares remained subject to lock-up periods and were not publicly tradable. As these lock-up periods expire, the number of SpaceX shares available for trading is increasing, raising the company's free-float ratio and potentially increasing its index weight. Further adjustments are likely to follow as more SpaceX shares gradually come out of lock-up, potentially pushing up its index weight again, according to Bloomberg.
SpaceX to Receive Weighting Boost in Nasdaq 100 Following Rebalance
SpaceX is expected to receive a significant weighting increase in the Nasdaq 100 index later this month, according to a Bloomberg report. Based on pro forma data from Nasdaq's Global Index Watch, the weighting is projected to rise to approximately 2.82% from roughly 1.28%. This adjustment follows the expiration of share lockup periods, which increases the company's free float and makes more shares available for public trading. Wall Street analysts anticipate that the change will trigger billions of dollars in buying by passive index funds and exchange-traded funds that track the benchmark, including the $481 billion Invesco QQQ Trust Series 1. The report notes that approximately $1.7 trillion in assets tracked the Nasdaq 100 as of the end of the second quarter. SpaceX's initial weighting was limited when it joined the index in July due to most shares being locked up. Additional lockup expirations are scheduled, which could further increase the company's index weighting in the future.
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