Exposing the "Investment Traps" of the 70,000 Yen Nikkei Average Era with Data and Mathematics! Free e-book version of "Your Brain Kills Your Assets" released July 29th. What shocking truths lie behind high-dividend stocks and covered calls?

Shuwa System Co., Ltd. (Chiyoda-ku, Tokyo, Representative Director: Norihide Tsushima) will release its new book "[Free Trial Edition] Your Brain Kills Your Assets: Practical Edition" on July 1, 2026.

Amidst the fervor of the 70,000 yen Nikkei Average era, is your wealth being killed by your "brain"?

With the spread of NISA, investment methods such as "high-dividend stock investing," "high-yield products" recommended at bank counters, and "appropriate stop-losses" recommended by influencers are flooding the market. However, what if these are not "safe and reliable" but, from a mathematical perspective, "investment traps" that steadily erode your assets?

In the e-book "[Free Trial Edition] Your Brain Kills Your Assets: Practical Edition," which will be released for free, the author, who earned a Ph.D. in Engineering from the University of Tokyo and transitioned to the financial world, thoroughly exposes four investment traps that we tend to fall into, using mathematics and data.

The True Nature of "Savanna Brain" That Robs Us of Logical Thinking

Why do we fall into obvious traps? It's because our brains have not been updated since the hunter-gatherer era hundreds of thousands of years ago, making them "Savanna Brains." The "present bias," which overestimates small, certain rewards, secretes dopamine and makes us overlook mathematical flaws such as the following:

The "Four Traps" Revealed in the Free E-book

The Trap of High-Dividend Stocks: This is "self-harm" against the engine of compound interest, creating friction through double taxation. Furthermore, we will reveal three specific screening criteria (dividend payout ratio, capital expenditures, ROIC) to identify dangerous companies that have given up on growth and have become "ATMs for founding families."

The Trap of High-Yield Products: "Covered call investment trusts" that banks recommend with a smile. Their true nature is a position that bears all the damage of a decline but receives none of the benefits of an increase, embodying "constantly losing small amounts while experiencing occasional huge losses" and being "radioactive waste of the financial world." The Worst Evolution: "Daily Covered Calls": The terror of the "ultimate self-harm system" that secretes dopamine with the slogan of "daily" dividend payments, rapidly eroding one's own assets, will be explained with simulator data.

The Bugs of Averaging Down and Stop-Losses: Selling at a loss simply because "it's down 10% from the purchase price" is a "false exception handling" that does not improve expected value at all from the perspective of modern mathematics' "random sampling theorem." The mechanism by which bugs caused by emotions crash accounts in a single blow will be dissected from an engineering perspective.

Released July 29th! True Asset Building with the Main Book "Your Brain Kills Your Assets"

After reading the free e-book, you will surely realize how much the actions we took with good intentions are bugs that exploit our instincts.

However, the most terrifying fact is that during a market crash when the market is dyed red, even the most intelligent person's brain is hijacked by fear, making calm judgment impossible. That is precisely why it is essential to build an "Investment Policy Statement (IPS)" that physically binds your future self, while the market is calm.

The main book, "Your Brain Kills Your Assets," to be released on July 29, 2026, will include complete steps for constructing a robust defense (IPS) against the runaway Savanna Brain, and a "verification tool with pro-level data (Python code)" exclusively for main book purchasers.

For those who want to end gambling-like investments swayed by emotions and start true asset building as "engineering" based on mathematics, first experience the sense of crisis and the truth of mathematics with the free "[Free Trial Edition] Your Brain Kills Your Assets: Practical Edition." Then, to obtain the "final patch (correction program)" that will save your investment actions from crashing, please reserve the main book to be released on July 29th!

[Table of Contents]

Introduction

Chapter 1: The Trap of High-Dividend Stocks ~You Might Be Buying "ATMs for Founding Families"~

Chapter 2: The Final Disposal Site for Risk ~Why Bank Tellers Smile When Recommending "High-Yield Products"~

Chapter 3: The Worst Evolution ~The Mechanism by Which "Daily Covered Calls" Destroy Compound Interest~

Chapter 4: Why Does Your Investment Crash? ~The Bugs of Averaging Down and Stop-Losses~ Conclusion

[Author Introduction]

Jiro Nakagawa

Earned a Ph.D. in Engineering from the Graduate School of Engineering, The University of Tokyo. After working as a researcher at several research institutions, he transitioned to the financial industry and engaged in practical financial engineering. He currently serves as an executive officer at an IT company. In addition to theory in the same field, he has accumulated nearly 20 years of practical experience as an individual investor, primarily in the Japanese stock market, achieving an annual return of over 17%. He currently manages assets of approximately 150 million yen. He advocates for "true strategies" for individual investors to survive in the market from the perspective of behavioral economics, utilizing the power of mathematics and data analysis.

Book Overview

Title: [Free Trial Edition] Your Brain Kills Your Assets: Practical Edition

Author: Jiro Nakagawa

Price: Free

Release Date: July 1, 2026

Amazon: https://www.amazon.co.jp/dp/B0H6NXN1LX/

*The content of this book will also be sequentially published on note! https://note.com/shuwasystem