SpaceX didn’t really get the takeoff many funds expected, despite them scooping up shares with or without their desire.

🚀 A Rough Landing

  • SpaceX shares dropped more than 7% on their first trading day as a , sending the stock back toward its post-IPO levels. So much for the textbook "index inclusion rally."
  • The company became one of the fastest-ever additions to the tech-heavy benchmark following its .
  • The move was expected to generate billions of dollars in buying from index-tracking funds — but demand wasn't enough to overpower sellers.
  • By the closing bell, the stock had slipped back below $150, giving up much of the excitement that followed its market debut just weeks ago.

📊 Why Funds Have to Buy

  • The Nasdaq 100 sits at the heart of more than 200 investment vehicles with roughly $800 billion in assets. Funds that track the index must buy newly added companies to keep their portfolios aligned with the benchmark.
  • That's called passive investing — funds aren't choosing whether they like the stock. They're simply following the index.
  • Every investor holding a Nasdaq 100 ETF now owns a slice of SpaceX, whether they specifically wanted it or not.
  • Normally, this automatic buying provides a tailwind for newly added stocks. This time, however, selling pressure proved stronger, suggesting early investors were more interested in taking profits than sticking around.

🌌 Space Sector Feels the Pull

  • Elsewhere in space, Rocket Lab fell around 10%, while Intuitive Machines and AST SpaceMobile each dropped more than 6%, making it a rough day across the sector.
  • Meanwhile, investors hoping for another quick index promotion will have to wait. S&P Dow Jones Indices has kept its eligibility rules unchanged, meaning SpaceX won't even be considered for inclusion in the S&P 500 for at least one year.
  • Joining a major index can boost visibility and create automatic demand, but it doesn't suspend gravity. Once the forced buying is over, the market goes back to doing what it does best — deciding what it's actually willing to pay.