Reviewer's note
Prologue: 89-Year-Old Active Day Trader

PART 1 I started investing at nineteen, and now it's been 70 years.

A poor childhood
Meet the stock at the pet store
Achieving monthly income of 20 million won through mahjong parlor management
Become a full-time investor after being lured by the allure of convertible bonds.
Lost 8 billion won due to the bubble burst
Started online trading at age 66
[Column] The Power to Read the Times is Crucial

PART 2 Trading 80 stocks for 6 billion won per month

Four Charms of Day Trading
Day Trading Basics ① Market Orders and Limit Orders
Day Trading Basics ② Cash and Credit Transactions
The match begins at 2 a.m.
Predicting Japanese prices based on US price fluctuations
Why does the intercom ring at 4 a.m.?
Every morning, I gauge my "today's winning moves."
'One Day's Deal' Revealed
When the market closes, I reflect on the day.
Trading approximately 80 stocks at all times
Three computers and three monitors
[Column] My hobby is collecting antique coins.

PART 3: Grandpa Shigeru's '1:2:6' Rule

Focus on 'increased sales, profits, and dividends'
Stock trading is based on the '1:2:6' rule.
Understand and buy the business model
Suitable and unsuitable stocks for day trading
Small and mid-cap stocks are the main battleground.
Timing with technical analysis
His specialty is 'closing play'
Making the most of your company's genealogy
[Column] Picking Up Investment Hints from Your Morning Walk

PART 4 ​​Sell when it goes up, buy when it goes down

It's not the 'materials' that move stock prices.
Don't rely on feelings or experiences of success
Even if it goes up, I won't buy it
There's a purpose behind a famous investor's remarks.
Water riding is not scary
Not losing out in competition with institutional investors
Why Individual Investors Can Beat Institutional Investors
Beware of the powerful stocks
IPO secondary investment is also attracting attention.
Don't be anxious even if you suffer a loss
Japanese stocks can grow further
[Column] Many investors are exiting the market.

PART 5: Day Trading is the Best Brain Training

Mind, Skill, and Body: The Key to Winning in Stocks
Judgment doesn't decline with age.
My own way to relieve investment fatigue
A question for those who want to make money
[Column] Senior investor Warren Buffett and I

Epilogue: Stock Investing is Good

“Buy stocks of good companies.
I enjoy trading stocks.

“This is all my investment.”
An ordinary person who didn't even graduate from college
Simple and clear principles that helped me become one of Japan's best stock investors.

Shigeru Fujimoto says this:
“If there are ten people, there are ten ways to invest.” That’s how many different investment methods there are in the world.
So, what are Shigeru's investment principles, having invested in stocks for 70 years? What criteria does he use to select stocks and determine trading timing? How does he maintain his composure in competition with institutional investors?

Shigeru's investment method has clear characteristics.
It's not flashy or complicated, he just sticks to the basics.
'Don't invest in areas you don't know well', 'Don't be swayed by what others say', 'It doesn't matter if it's 3 yen or 5 yen, as long as it goes up.
'It is forbidden to be too greedy', 'Stocks with promising future prospects are always good', 'Don't pour your investment money into a good stock all at once just because you found it.
‘I always follow the 1:2:6 rule’, ‘I don’t rely on my experience of success.
His investment methods, such as 'determining investment timing through technical analysis', are famous sayings that become our blood and flesh that we, who invest in stocks, must remember and practice.


As you learn about Shigeru's solid investment principles, you'll find yourself reflecting on your own investment methods.
Let's examine whether we have neglected the fundamentals of investing by dismissing them as obvious, or whether we have invested without careful judgment, swayed by the flashy words of others.
The investment method of a master is simple and clear.
Even in the world of investing, those who stick to the basics ultimately win.

“It is right to buy, it is right to sell,
And you deserve to rest.”
Individual investors against institutions
Why You Can Win in the Market

The structural gap between individual and institutional investors is clear, including the size of their funds, transaction costs, market influence, and decision-making consistency.
But Shigeru Fujimoto has been making huge profits by going against institutional investors for 70 years.
And many individual investors who came across this move became his ardent fans.


In his book, "The Joy of Stock Investors," Shigeru also provides specific tips on how to win in competition with institutional investors.
One of the most impressive pieces of advice is about ‘mindset.’
While it's certainly important to read charts carefully and diligently gather information, he says you should be careful not to get carried away by trends created by institutional investors.
In a market where everyone is competing—from investment banks and hedge funds to big shareholders, veteran individual investors, and even just-beginners—to profit, you need to understand what your opponents are thinking.
It is said that when you try to read the minds of other investors, you naturally become wary of moves that might deceive you.


“The expression ‘Should I buy, sell, or take a break?’ may seem like an all-too-familiar and obvious question.
But I would like to use this as a proverb that talks about the importance of rest.
When you think of day trading, you might picture yourself constantly trading in front of a computer monitor, but that's not necessarily the case.
'When the market is not active, I don't touch it.
Reflect on each and every transaction.
"Check the flow of the larger economy. Only by striking that balance can you generate profits."

Shigeru also provides insight into the strengths of individual investors.
Unlike institutional investors, individual investors' greatest advantage is that they can freely use the weapon called "rest" and react quickly to situations.
It emphasizes that individual investors can also achieve an advantageous position if they can choose stocks and trading timing wisely through an investment method that flexibly adapts to the massive entity and flow of the "market" rather than resisting it.

“Do you want to make money?
Then think for yourself.”
Unshaken by loss and failure
The true joy of building wealth through investment

“It is a saying that the more profitable an investor is, the more he or she invests in solitude, without being influenced by what others say.
The internet makes it easy to access information and build connections, but are those information and connections truly meaningful? The more you struggle with stocks on your own, the more you rely on your own judgment.

The author says he feels the "joy of stock investment" by facing the market solely with "my routine," "my analysis," and "my judgment" without relying on anyone else.
In a capitalist society where it is difficult to build the life we ​​want with earned income alone, we ultimately have no choice but to continue investing.
This book provides a way to enjoyably continue investing, something you must do anyway.


What investments am I making now? What are my criteria for making those decisions? How confident am I in my judgment? Am I simply making excuses like lack of time, age, a short attention span, or a poor market? Shigeru Fujimoto, who has been fiercely competing in the stock market for over half a century, poses fundamental questions about investing.
Now is the time to face that question squarely and answer it.