Something big is happening in the stock market... and most folks have no idea it will affect their personal investments.
As you surely know, SpaceX (SPCX) finally went public this past Friday. It's Elon Musk's rocket company, which also runs Starlink – the satellite Internet service.
SpaceX initially raised roughly $75 billion at a valuation of more than $1.7 trillion. That made it the largest initial public offering ("IPO") in history.
Now, only about one-fifth of the more than 555 million shares offered to the public went to retail investors. The big institutions bought up most of the stock.
The IPO was also more than "fully subscribed." Put simply, that means demand exceeded the number of shares available. The institutional tranche alone was more than 4 times oversubscribed.
And folks indeed piled in...
SpaceX surged by about 19% on Friday. It ended its first trading day as the sixth-largest company in the U.S. market.
And the IPO made Musk the world's first trillionaire.
But even if you didn't participate in the IPO, there's a real chance that you'll soon end up exposed to the stock anyway.
The reason has to do with how the modern investing system works – and a quiet rule change related to the SpaceX IPO...
Pay Attention to New Rules for Major Indexes
The U.S. boasts the highest number of folks invested in the stock market in the world...
According to a 2025 Gallup poll, more than 60% of Americans report owning stock.
Sure, there are millions of active individual investors. But most Americans own stocks through a retirement account – like a 401(k) or individual retirement account.
As part of the longer-term strategy of retirement accounts, a portion of the funds is allocated to stocks through a target-date fund or an index fund.
These funds typically track a major index – like the broad Russell 3000 or the tech-heavy Nasdaq 100. And this effectively gives retirement-account holders an indirect stake in each of the companies listed in these indexes.
This brings me to the rule change...
Historically, a newly listed company had to wait three months before being added to the Nasdaq 100.
In the case of the Russell U.S. indexes, newly listed companies had to wait until the next quarterly or annual "reconstitution" to be included.
The idea behind these rules was simple...
They gave time for a stock to settle down after its IPO. That allowed the stock to "find its level" after the IPO hype dissipated.
Well, in May 2026, the folks behind the Nasdaq 100 and Russell indexes came up with a "fast entry" rule...
It cut the wait time for a newly listed company to join the Nasdaq 100 down to just 15 days. And in the case of the Russell indexes, it's now as little as five days after the IPO.
These fast-entry rules also made changes to "free float" requirements...
They allow companies with a smaller free float (as in shares available to the public on the open market) to join the index if they meet market-cap requirements.
Put simply, all this paves the way for a company like SpaceX to quickly join these major indexes – instead of having to wait for months.
So, whether or not you choose to buy SpaceX's IPO... if you have a retirement account, you'll most likely own it within the next five to 11 days.
It's also not the only company that will be benefiting from this latest rule change...
Two more mega-cap IPOs are lining up to make their debut listings soon. I'm talking about AI powerhouses OpenAI and Anthropic.
OpenAI is the company behind ChatGPT, the chatbot with more than 1 billion users worldwide.
Anthropic's Claude chatbot has nowhere near as many subscribers as ChatGPT. But it's dominating enterprise adoption. That's because of the chatbot's strong advantage in working on big datasets – while still producing reliable results.
OpenAI and Anthropic are each expected to fetch valuations of more than $1 trillion when they have their respective IPOs later this year.
And yes, because of the fast-entry rule, both companies will likely join major indexes shortly after their respective stock market debuts.
This means most folks with a retirement account will eventually wind up indirect owners of OpenAI and Anthropic... whether they like it or not.
To be clear, index investing is still one of the most reliable long-term strategies. And owning a slice of SpaceX inside a diversified fund is different from betting your savings on it directly.
Meanwhile, we can obviously look to the Power Gauge for a broad outlook on the major indexes...
As regular readers know, we track the Nasdaq 100 in our system with the Invesco QQQ Trust (QQQ). And the Power Gauge still gives it a "bullish" rating.
We also measure the Russell 3000 with the iShares Russell 3000 Fund (IWV). The Power Gauge is "neutral" on IWV. But notably, the fund has 750 stocks with "bullish" or better ratings versus 455 "bearish" or worse ones.
Looking ahead, we'll have to see how much a SpaceX inclusion ends up changing the outlook on QQQ and IWV. And that also goes for OpenAI and Anthropic when they eventually go public – and wind up in major indexes.
But for now, you need to be aware of these fast-track rules. And think about them the next time you decide to pile money into an index fund.
Good investing,
Vic Lederman
Editor's note: Our friends at our corporate affiliate Stansberry Research have also been following this big story about the new rule changes...
In fact, later today, two of Stansberry's most prescient market analysts are going on camera for a special emergency briefing related to all this. They'll discuss more details about the rule changes. And they'll share a simple way to protect your money.
Stansberry's briefing kicks off at 1 p.m. Eastern time today. And it's free to attend. Just reserve your spot for it here.
