So, you don't attempt to do it. But, you admit there is some value, at least at times (your observations in 1999 and 1982). You noticed it both times without even trying to tune in to it. Imgaine what you might notice if you paid attention.
I see value in observing. It's subjective. It's not foolproof. It would be tough to quantify for client presentations or not get sued. Yeah, yeah, all that. I would never reply solely on it. But it can be a valuable clue. It complements more objective measures of value.
It only makes sense that PE expansion & compression would be tied to investor emotions and participation. When "everybody"... ahem, "the vast majority" are doing something investment-related, like buying stocks, the prices tend to get bid up, and P/Es expand. Bid-up prices (high PEs) are negatively correlated with future returns.
Examples of clues that I've experienced:
My brother-in-law suggesting in 2006 that we should start flipping houses was a clue. I had already run the numbers and renting made more sense than buying... but his enthusiasm confirmed my decision to keep renting.
Hearing "Qualcomm" & "Cisco" repeatedly in the locker room at the gym in 1999/2000 was a clue.
My mom (having contibuted annually to IRA & 403b for 14 years, and never once mentioning it to me) asking me, in February of 2009, if she should put in her annual IRA contribution or hold off... was a clue. (She did contribute.) My guess is she won't contibute, or will be TOUGH to convince, the year we finally put in a secular bottom and 10-year PE ratios are single digits.
The only two friends I had ever discussed gold with, emailing within 2 days of each other, in Aug, 2011, "you were right" was a clue. I would guess those two will buy gold before gold's ultimate peak.... which I'd guess is still to come.
Today, every single one of my close friends (that I discuss investing with) have a decent chunk in stocks. Within the last few months, several of them have indicated they have an itchy finger on the sell button, and are waiting for the first sign of trouble. They are in their 30s/40s, have secure professional jobs, and have NEVER exibited fear of stocks, nor sold out. I think that is a clue. My guess: the next downturn will be faster & more severe than the last few. I'd guess that will be the one that takes us to single digit PEs.
I find the psychology of markets & market participants fascinating. I think it reflects what value investors see in the numbers.
Are you describing what I've done with Graham, or is this your sarcasm (not to be taken seriously) again? Serious question. It's hard to tell. It feels like a putdown. If it's sarcasm, it adds no value, and is very distracting.
Anyway, perhaps you don't study the best investors in history because you are not attempting to outperform the market?
I've found that studying the best is a great way to learn. In any endeavor.
Not alone, but if the large majority of ordinary people are blindly investing in stocks, AND p/e, p/s, etc ratios are high compared to historical averages, it implies stocks are not a great investment at that time.
Except... the two times you admit paying attention to sentiment and it was valuable. But - what you did was impossible, and god-like...
Are you a demigod? Nope, and neither am I. Your experiences and my own convince me there is opportunity beyond blind stock investing... for someone that can control their emotions and stay disciplined. Thinking can be good.
Your advice is good for most people. Absolutely. But that doesn't mean that paying attention to value to enhance performance is impossible. Nor does it take god-like ability.