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The cumulative profit from stock trading that he started with an initial investment of 3 million yen 20 years ago when he was a part-time worker exceeded 10 billion yen in February this year. We spoke to the charismatic investor, Mr. Testa, who says he has "never had a losing year" about his investment philosophy.

My goal is to keep updating my maximum profits. What most people call "work" is investment for me, so I feel joy in getting results there. If there is something I want, I will spend money normally, but ideally I would like to die at the peak of my assets.

?So I only deposit what I can withdraw immediately in the bank, and more than 90% of my assets are invested in stocks, which is what I'm best at. And I only buy individual domestic stocks. Before COVID, I bought 200 million yen worth of stocks in large American companies, but it was only "just in case something bad happens to Japan," and I don't intend to make a profit from them. Even though it has now increased to 400 million yen, I'm sure I could have made more profit if I had invested that amount in domestic stocks. At least for me now, the most efficient way to make profits is to focus on individual domestic stocks.

 

"There are some things that can only be predicted by living in Japan."

?The reason why I am so particular about Japanese stocks is because I choose the stocks I buy based on the events and atmosphere in the world and the subsequent impact I can imagine.

?For example, when a scandal at a certain used car dealership causes the stock prices of the entire industry to fall. If you change your perspective, you can see this as an opportunity to buy cheap stocks of the second and third largest companies in the industry, to which the customers of the scandalous company will likely flow. Even if there is a risk of scandals occurring all over the industry, in that case, the responsibility of individual companies may not be pursued to that extent.

?Or, with the Bank of Japan's monetary policy meeting coming up soon, you might be thinking about buying shares in a megabank in preparation for a revision in monetary easing, or you might be thinking about how the outcome of the US presidential election will affect Japanese stocks.

?After all, it is precisely because I live in Japan and feel the atmosphere that I can predict what lies ahead. As for the sudden drop in stock prices in August, I knew that a big drop would come someday, given the rise in stock prices up until then. So, although I have also lost several hundred million yen this time, I am not particularly concerned. I think the important thing is to calmly predict and make decisions about what lies ahead, no matter what the situation.

?A rough portfolio would be one in which you invest around 60-70% of your funds in this type of "idea-based" swing trade (trading that locks in profits within a few days to a few weeks), and use the remaining 30-40% to hold stable high-dividend stocks for the long term.