In the U.S. stock market, I have felt that it was efficient to maintain profitability over time to start an investment analysis by borrowing Jordan's method of controlling the proportion of shares held in preparation for the difference in the total percentage of the company's total market capitalization. I think it's worth establishing a way to quickly and efficiently set the standard for judgment over time because everyone has their daily work and study only after they're not full-time investors.
On the other hand, the experience of investing through corporate and industrial analysis is that Japan, Germany, France, etc. has a partial comparative advantage in technology developed countries other than the U.S., such as industrial robots and process automation in Japan, and Germany has a trans-based smart factory.
I once analyzed and concentrated on Yaskawa, Kawasaki, Hwanak, Nazis, and Keyens, a sensor company in Japan. But in Japan, it was very profitable, but in Germany and China, it failed in the same way, and after that, I saw more brand value that could support the Communist Party and cover China's domestic market. Ahhhhhhhhhhhhhhhhhhh...