>
Is the landscape of 1991 the same as the landscape of 2020, with its 10% of the s&p in just a few companiesYes, it is the same:
* https://awealthofcommonsense.com/2020/07/the-nifty-fifty-and...
* https://theirrelevantinvestor.com/2018/11/26/the-nifty-fifty...
* https://en.wikipedia.org/wiki/Nifty_Fifty
* https://etfdb.com/history-of-the-s-and-p-500/
* https://www.qad.com/blog/2019/10/sp-500-companies-over-time
That's the definition of the S&P 500: the largest five hundred companies publicly traded companies.
> with money printing,
I do not think this actually does what you thinks it does:
* https://www.youtube.com/watch?v=K3lP3BhvnSo
* https://rationalreminder.ca/podcast/109
> […] Talk shows about stocks and news algorithms pumping stocks to the masses?
Please see the 1990s and "irrational exuberance". I live in Canada: ask anyone here above a certain age (40s) about Nortel and Bre-X.
> Are fund managers (who have clients) compared to the likes of you and me ?
Fund managers have more resources than you and me, and thus probably have better information to base decisions on. Unless, of course, you are using satellite imagery in your investing workflow:
> Currie’s prediction proved correct. As word spread that satellite images were a reliable predictor of corporate profits, a range of investment funds began buying retail-traffic data from RS Metrics. In the following years, the company expanded, tracking not just parked cars but solar-panel installations, lumber inventory at sawmills, and the mining of metals worldwide.
* https://www.theatlantic.com/magazine/archive/2019/05/stock-v...