alt Hacker News> If a significant percentage of the market is excluded from the index because they don't meet index inclusion criteria, then then index stops being a useful benchmark.
So what's the reason for fast entry specifically? If it's a significant portion of the market and will remain so, it doesn't need an accelerated entry. A benchmark should be conservative about new entrants so that it doesn't turn from a market benchmark to a trend/fad benchmark.
If time validates the valuations the entry will come in time, just like for previous entries.
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Because the index needs accuracy. If a company is 1-2% of the total US market cap and not included in the index, then the index is wrong right now. The longer this company is not in the index, the longer this error compounds.
In the coming few months, multiple giga-cap companies (SpaceX, OpenAI, Anthropic) are all planning to IPO. These companies will likely never meet S&P profitability inclusion criteria for the next 5 years. These are not bad companies, but because the S&P inclusion criteria were written for old GAAP profitable companies, and not high-growth companies that invest their cashflow into company growth over profits. Excluding some of the most civilization changing companies from the benchmark means the benchmark is doing a terrible job.
> So what's the reason for fast entry specifically?
Inclusion in as many indexes as possible is basically the definition of "too big to fail." It's the ultimate de-risk to know that if you fuck up badly enough the government will just give you everyone's money.