Source

Secondary article pointer for the user-facing concern: a very large $SPCX IPO could enter index-linked retirement products unusually quickly if index providers' mega-cap IPO rules apply. Treat this as a capture input, not methodology truth. The actual rule mechanics live in the Nasdaq and S&P primary documents captured the same day:

• 2026-06-02-nasdaq-ndx-fast-entry-methodology
• 2026-06-02-s-p-dji-megacap-consultation

Research route: parent mechanism lane ai-mega-ipo-fast-entry-liquidity-regime, where $SPCX, OpenAI, and Anthropic are child cases. The lane tests whether fast index entry / passive buying / allocation crowding changes market oxygen for crowded $NVDA / Mag7 / AI-infrastructure trades. It does not imply the user should buy the IPO.