SpaceX, a recent entrant to the Nasdaq-100, is anticipated to see its weighting in the index increase by approximately 3.4 times during the mid-September rebalancing. This adjustment is due to the Nasdaq-100's methodology, which scales a company's weighting based on its float-adjusted market capitalization. With only about 5% of SpaceX's total shares initially offered to the public in its IPO, the index's weighting is set to grow as more shares become publicly available.
This increased weighting means that the hundreds of investment products and funds, including the Invesco QQQ Trust (QQQ), that track the Nasdaq-100 will be compelled to purchase billions of dollars worth of SpaceX stock to maintain their alignment with the index. JPMorgan estimates suggest that the index addition alone could trigger around $4.3 billion in passive inflows. This forced buying by index funds and mutual funds benchmarking against these indexes is expected to provide substantial demand for SpaceX shares.
However, this anticipated buying pressure coincides with a series of lockup expirations for early investors and employees, scheduled for August, September, October, and November. These expirations will release hundreds of billions of dollars worth of shares into the market, creating a potential selling pressure. Many early investors may seek to sell not because they view SpaceX as a poor investment, but to diversify their portfolios after significant gains and reduce concentration risk.
The scenario sets up an unusual dynamic where index fund managers, acting as forced buyers, will contend with early investors and insiders who may be forced sellers. While index funds are required to buy to track the benchmark, it remains uncertain if this demand will be sufficient to offset the potential influx of shares from insider selling. This tug-of-war could lead to elevated volatility for SpaceX stock in the coming months, particularly for passive investors now exposed to the company through their index fund holdings.
