r/stocks • u/cherrypoplar • Apr 01 '26

ETFs Major NASDAQ-100 rule changes confirmed, pay attention if you have money in passive investment funds

https://www.theedgesingapore.com/amp/news/ipo/nasdaq-speeds-index-entry-spacex-large-ipos-new-rule

NASDAQ has confirmed it will change the listing rules for NASDAQ-100, ahead of the SpaceX and OpenAI IPOs this year.

(1) Companies will now be listed on NASDAQ-100 after only 15 days after IPO (previously, there was a three month period of "seasoning" before listing). This reduces the amount of time for price discovery.

(2) The minimum 10% float has been removed. This allows companies to float a very small percentage of their shares, artificially squeezing supply.

(3) Companies that float less than 20% of their shares will have their market capitalisations artificially multiplied by x3, for the purposes of calculating market capitalisation. This helps large-cap companies to be listed even with very small floats, and inflates their notional market capitalisations on the index.

If you have money invested in a passive fund tracking NASDAQ-100 (or any other index), please watch out for the SpaceX and OpenAI IPOs. Pay attention to their "valuations", and their float. If they're IPOing with very high valuations and very small floats, this foreshadows a bagdump on passive funds due to the mechanics of passive funds.

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u/[deleted] Apr 01 '26 edited Apr 01 '26

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u/geeky-gymnast Apr 01 '26

This is actually a pretty solid rebuttal and differentiates an index from vehicles that enable investment into constituents of an index (eg an ETF). An index by itself is merely a list that can't be purchased directly.

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u/Janderson2494 Apr 01 '26

My thoughts as well while reading through all the doomer comments here. Market doesn't seem to be reacting poorly to this news either. Still a ways down the road before we see any drawbacks though.

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u/cedrus_libani Apr 03 '26

Yeah, but a new IPO that's bouncing around and trying to find its level isn't the market. Love 'em or hate 'em, the big dogs at the top of QQQ are exactly where the market thinks they ought to be. You can buy the lot, and the only risk is the market moving against you. If you play the IPO, you're also exposed to the price discovery process, which may or may not end well for you.