It is definitely happening...not much information though. Found some articles from last year about it but of course they were in a more positive light. S&P had a headline about how pension funds were lagging in their investment. This seemed to also include consumer debt as well btw...
(I am not a financial expert and have done little no research into the specifics but on the surface this is what I see)
I am loath to trust anything on Tik Tok but in theory yes, if this is really happening on the level they are suggesting it won't take much for things to go south badly. Private Equity these days is shady AF and we saw what happened when their big backer Silicon Valley Bank went under because of rate hikes. If the big banks started doing that on a massive scale the cascade effect could be deadly. If businesses that were purchased by Private Equity start failing not only are you dealing with much of the same issues the '08 crisis caused, but you are also adding in that hundreds/thousands of people will be out of work on tape of that. So you will have a spike in unemployment, consumer debt will skyrocket, homes will be lost, banks will be hit with defaults from both sides and likely even the Private Equity firms will get crunched because a lot of this will be underwritten by other investments (like how Musk used Tesla Stock as collateral for the Twitter purchase) or loans from banks that will be called due. Even if it is spread out over multiple quarters it will drag down the economy to a long term recession. If it all hits relatively quickly...well not to sound alarmist but it could literally destroy the financial sector and I am not being metaphorical.
Yeah, but most commercial paper is from high quality companies with fairly good history of repaying debt. We're talking Nvidia, Google, AT&T, JP Morgan, etc. These are basically the debt of the S&P 500.
Take a look at the Vanguard Total Bond Market Index. This is purely bond market holdings. Almost 50% government, 22% mortgages and other asset-backed debt, 3% foreign, and the bulk being commercial debt (25%).
investor.vanguard.com
You don't see commercial paper show up until page 31 on their holdings disclosure. That lot is Anheuser-Busch debt ($153M out of $350B total assets in the fund). You can find the full list at the link above, but you'll find that they're as diverse as the S&P500. This is pretty typical for the largest bond market funds. It's a relatively low risk, stable investment, generally speaking.
Now, depending on how well these pension funds are managed (tugs at collar), they should be broadly diversified in stocks, debt, etc. If they're buying garbage debt at low yields then yes, there's a risk. Hard to know how much of a risk though.
Anyways, there's a reason total bond market funds are broadly diversified. The bulk is in government, which tends to be the safest bet but lowest yield. Then comes mortgages and commercial debt providing a bit of higher risk but higher yield. Each of these has somewhat different risk exposure and as long as the pension funds are following this type of strategy, they'll be fine. If we see a broad default on commercial debt, there are much, much bigger issues and there's no safe harbor. This would mean stocks and commercial bonds are worthless and companies start to file various flavors of bankruptcy.