Personally I'm investing 1/3rd of my NW in private equity, but none of it LBO. I suspect you're right about PE (and VC) company valuations. Less money flowing in means fewer funding rounds, and those are the primary determinent of price.
I'd also be interested if you can point to public data about LBO performance. I couldn't find any in a brief search.
First, let me say that I have no problem with someone putting money into private equity. (Full disclosure: I've done so myself. And would again.) Also I have talked here recently about the research (
Capitalists in the Twenty-first Century) that seems to suggest one form of private equity, ownership of small pass-through entities, is really the most common route to joining the top one percent or the top point one percent.
But some comments or remarks to move the ball forward.
So challenged by statement that you've looked but can't find good data on private equity returns, I thought, "oh gosh, that data must be available at least from the economists researching stuff like this. But alas when I search "private equity NBER" there is very little. A bit. But not much. Which is interesting.
I did find this interesting and useful "lay" discussion from NYU publication:
https://theeconreview.com/2022/06/10/does-private-equity-outperform-public-markets/ It appears to say that PE maybe slightly beats S&P though probably not enough to justify the higher risk. And then there are questions about whether the PE data is even precise and accurate enough to compare to public company returns. (This is contrary to the blog post from Stephen Nesbitt you referenced.)
BTW it's possible you may recall my in-forum public enthusiasm for investments in housing that followed the "rate of return of everything" research. (There are several threads.) That enthusiasm mostly boiled down to low correlation between housing and stocks and then less volatility in housing. But as some of you pointed out, that lower volatility may have just reflected less frequent measurement? Or maybe a market when people don't or don't have to admit the value of their asset has declined? I mention because it's possible that same weirdness affects the PE data that is available?
A final comment which you know,
@MustacheAndaHalf , but others may not. So I share here. David Swensen wrote two books. Unconventional Success (which is a GREAT book we all should read IMO) and Pioneering Portfolio Management (another good book for active investment managers). In "Pioneering" he digs into the details of returns from alternative assets like PE, hedge funds, etc. And he says (and I would say
proves) that on average these alternative asset categories fail investors because their median returns look pretty modest compared to public equities. Swensen shows in "Pioneering" in a little chart that an investor needs to be in the top quartile to get the good returns. And then he says Yale gets access to those investments. Other big investors ( Gates Foundation?) do. But "smaller" and even average PE investors won't. I mention all this because I kinda wonder if this doesn't explain things like the disconnect between Swensen and Nesbitt. BTW Swensen also says this in "Unconventional" but I can't find the chart or quantitative details (like a table.)