SpaceX’s Public Listing Could Reshape Retirement Portfolios

Elon Musk’s SpaceX is on the verge of a public listing that may see its valuation surpass $1.75 trillion. This could integrate the aerospace company into major stock indexes, touching millions of Americans’ 401(k) portfolios via index funds. With major index funds, such as the S&P 500 and Nasdaq-100, tracking stock benchmarks automatically, SpaceX’s entry into the public market makes it accessible to everyday investors through 401(k)s and passive funds.

An initial public offering (IPO) is when privately held companies offer shares on a public stock exchange for the first time. SpaceX’s shares have yet to be unlocked for individual investors. Established by Musk in 2002, SpaceX designs, manufactures, and launches rockets and spacecraft. It also provides the Starlink satellite internet service. Recent changes by index providers have eased eligibility rules, allowing quicker integration of newly public companies into benchmarks followed by retirement funds.

Impact on Retirement Portfolios

Indexes like the S&P 500 track publicly listed company groups. Funds aligned with these indexes replicate the holdings, impacting exchange-traded funds and retirement products such as target-date and total-market index funds. Scott Richie, an investing expert at Stoculator, explained to Newsweek that index funds follow the index’s holdings exactly. Broad retirement products that track the entire market will operate similarly.

For instance, funds tracking the CRSP US Total Market Index aim to hold nearly every U.S. listed company. Once introduced, those tracking CRSP will acquire SpaceX stocks by size. Richie emphasized that this isn’t a decision by fund managers. Instead, the total-market index is executing its purpose: owning the entire market, now including SpaceX.

SpaceX’s initial presence in retirement portfolios would be small. Only a portion of the company is expected to be publicly traded initially, limiting its share in broad index funds. According to Richie, this represents a small fraction of a saver’s holdings, not a substantial shift. With about 5% of SpaceX trading initially, within a broad index fund, it remains a minor component.

Investors already possess similar indirect exposure across varied portfolios. SpaceX would become another small piece in a diversified portfolio. Richie noted that for most savers, this is neither a significant benefit nor a threat. A small fraction of any company, whether it rises or falls in value, won’t critically affect retirement.

Larger Market Impact

Despite retail investors having limited exposure, adding a company of SpaceX’s size can incite extensive trading across index-tracking funds. Certain index providers have modified rules to admit large companies into benchmarks sooner after public entry.

SpaceX is likely to join the Nasdaq-100 with notable initial weighting once eligible. As a result, funds tracking this index will need to purchase shares according to that weight. Asher Rogovy, chief investment officer at Magnifina, LLC, informed Newsweek that this triggers a chain reaction across portfolios. Each index fund matching that index then acquires stock identically.

To achieve these acquisitions, index managers often sell small amounts of other holdings, spreading the influence throughout the market, not solely the new entity. “The bigger SpaceX is, the more they have to sell,” Rogovy stated. As market operations adhere to public index rules, the timing and scale of trades become predictable for market players. “Earlier traders can step ahead of funds and secure better prices,” Rogovy noted. This results in upward pressure on SpaceX and downward pressure on other index components.