Let's take Kim Han-guk as an example, who started his career at the age of 25.
In the case of Kim Han-guk, a new employee, even if he doesn't have any money right now, if he diligently saves 1 million won per month, increases the savings by 3% every year, equal to the inflation rate, and invests the savings at an annual compound interest rate of 8%, he can own a net worth of approximately 1.832 billion won in 30 years.
--- p.43

People tend to think that when they make a profit, it's because they did well, and when they lose, it's because circumstances didn't work out for them.
This is why it is not easy to improve your skills even if you accumulate experience.
This is where the greatest advantage of quantitative investing comes into play.
Quantitative investing allows us to invest without being swayed by the flawed investment psychology that can ruin our investments.
--- p.58

All the strategies we'll introduce below are based on quantified, numerical data, with clear rules for buying and selling.
Therefore, you can clearly see what the returns and losses would have been if you had invested according to this strategy in the past.
--- p.82

As the loss rate increases, it becomes increasingly difficult to recover.
Even if the loss rate is only 33%, you need to achieve a return of 50% to recover your principal. If the loss rate is 75%, you need to achieve a return of 300%. If the loss rate is 90%, you need to achieve a return of 900%, which is over 100 times, to recover your principal.
As losses become larger, it is virtually impossible to recover the principal, so 'loss minimization' is very important in investing.
--- p.106

The goal of asset allocation is to minimize losses.
While the maximum drawdown (MDD), which is the largest loss range over the past 50 years, has soared to 50-70% for stock indices, it can be reduced to less than 15% using asset allocation strategies.
--- p.123

While it's impossible to predict the four economic seasons, diversifying your investments across stocks, bonds, gold, and cash ensures that some assets in your portfolio will generate returns no matter what season it is.
Also, we must not forget that stocks, bonds, and gold are assets that tend to rise in the long term.
Therefore, the increase in assets is greater than the decrease in assets.
--- p.173

Ray Dalio suffered a huge setback in the early 1980s and was under tremendous stress.
Customers pulled out of his successful company, and he was forced to lay off all his employees to survive.
Determined never to experience such a painful experience again, Dalio then became fixated on the question, "How can I structure my investment portfolio to generate stable returns regardless of economic conditions?"
It wasn't until the early 1990s that he finally found the answer.
--- p.190

If you adopt a permanent portfolio or an all-season portfolio, you don't have to do anything all year round.
You only need to adjust your investment weights once a year, and this process takes about 10 minutes.
Isn't it amazing that you can invest so little time and still earn high single-digit compound annual returns while doing more valuable things? --- p.218

Asset markets exhibit a 'momentum effect' where assets that have recently risen continue to rise.
Therefore, if you buy assets that have recently risen significantly, you are likely to achieve higher returns than if you simply diversify your assets.
--- p.245

Gary Antonacci calls this strategy "dual momentum."
What's surprising is that this simple strategy yielded the following results:
If you had invested 50% each in US (SPY) and developed market (EFA) stock ETFs during the same period, the total compound annual return from 1970 to 2021 would have been 10.1%, while the original dual momentum strategy would have been much higher at 15.1%.
Additionally, the portfolio with equal weights in US and foreign stocks experienced a massive MDD of 53.6% from October 2007 to February 2009, while the MDD of the original dual momentum was less than half at 19.6%.
--- p.287

Our country's presidents sometimes subscribe to stock funds.
Did you know that investing in the KOSPI index is a fantastic market timing tool that can yield high returns? If you followed the presidents' lead, you could have achieved a staggering return of at least 62.1%, a maximum of 84.2%, and an average of 71.5% in just two years.
--- p.313

Of the strategies we've looked at so far, the three strategies we've looked at in descending order of MDD are the Comprehensive Dual Momentum, PAA, and DAA strategies.
So, what if we divided our assets into three equal parts and created a portfolio that invested in these three strategies? While each strategy's MDD ranged from 10.3% to 12.0%, the portfolio's MDD decreased to 8.5%.
Over 47 years of investing, I only lost 8.5% at my worst! It's beautiful! Quantitative investors are moved to tears when they see pictures like this.
--- p.335

On my YouTube channel, "You Can Do It! Invest with Knowledge," I reveal stocks that fit my top 10 dynamic asset allocation strategies at the end of each month.
We reveal the long-term performance of the top 10 strategies, their performance this year and last month, and the stocks that fit the strategies.
This will help you rebalance quickly and minimize trial and error and time investment.
--- p.348

“Eleven Heavens, Fifty Hells!”
This is what I keep shouting to investors.
If financial markets were rational, it would be impossible for returns in any given month to be consistently higher than returns in other months.
But in reality, there are definitely high and low yields.
Even more surprisingly, this pattern has remained largely unchanged over time.
To conclude, statistical analysis shows that returns are high from November to April and low from May to October every year.
--- p.353

I can guarantee it.
If you follow any of the strategies in this book consistently for 10 years, your chances of losing money are 0%.
It's not 0.1%, it's 0%.
If you followed any of the strategies in this book for 10 years and lost money, I will reimburse you 10 times the price of the book.
It means that you are confident to this extent.

--- p.376