• SpaceX is being added to major indexes after just five days of trading.
• Index providers like Nasdaq and FTSE Russell are speeding up the inclusion process.
• This move may expose passive investors to untested companies.
• The typical seasoning period is up to a year.

The fast-tracking of mega IPOs like SpaceX may indicate a shift in index provider strategies, which could have significant implications for passive investors. This move may suggest a trend towards greater inclusion of new and potentially volatile companies in major indexes, which could increase risk for investors. However, it may also provide opportunities for growth and diversification.