The S&P recovered from Dotcom bottom in ~7 years while the Nasdaq-100 took 15 years. Likewise Nasdaq took 3.5 years and the AI hype to recover back to its COVID highs in 2024 while S&P had the same recovery in about 2 years.
This is the downside to Nasdaq having higher returns in tech bull markets.
So the indices have a very different volatility profile by design, we should be happy to have the choice rather than have them all converge to the same product.
I have 1 trillion shares, and I sold 1 to a mate for a dollar.
Total company revenue is like 50 bucks a month and profits are nil.
Can I be in the S&P 500 too?
Of course this all becomes moot if all the companies crash out. I don't think enough people are asking what if these companies don't crash out though.
Did it really used to require that you own "15 railroads" ?
Regardless, the S&P 500 also excludes a company like Microstrategy (the company that holds Bitcoin) from their index, had excluded Robinhood for a wile due to missing the profit requirements, and so on. It was never "meant" to cover the 500 largest companies by market cap, and has generally resisted pressure to change that.
They have resisted that pressure historically, and remained fairly conservative. But if these companies stay in the 1T+ range, that's an amount of pressure they have not had in the past. You also missed one of the largest exclusions for a time for profit reasons that's also relevant here - TSLA.