NEW YORK — SpaceX joined the Nasdaq 100 index on Tuesday, weeks after its public listing, as part of a quarterly rebalancing that placed Elon Musk's space company among the benchmark's largest technology constituents.

The inclusion followed SpaceX's stock-market debut, which made the satellite-internet and launch operator one of the most closely watched listings of the year. Nasdaq's methodology adds qualifying companies based on market capitalisation and liquidity thresholds measured during a review window, with changes effective before trading on the rebalance date.

The move compelled exchange-traded funds tracking the Nasdaq 100, including the Invesco QQQ Trust, to buy SpaceX shares to mirror the index. Passive inflows tied to index membership typically run into billions of dollars, providing demand independent of company fundamentals.

SpaceX's entry underscored the growing weight of space and satellite businesses within mainstream technology benchmarks long dominated by software and semiconductor names. The company's Starlink constellation has approached 8,000 satellites and become a significant revenue driver alongside its launch operations.

A Nasdaq spokesperson said index changes followed the published rules-based methodology and applied to all affected funds simultaneously at the market open.