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The Power of Inversion in Investing
Think Like Charlie Munger: Protecting Wealth Through Inversion
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Welcome to Financial Fluency - a newsletter designed to boost your understanding of financial terms and provide you with investment ideas for long-term financial success.
In today’s newsletter:
A look at the markets: No Santa Rally this year
The Power of Inversion in Investing
The Danger of Market Predictions
Word of the Day: Crippling
Word of the Day: Catastrophic
A Look at the Markets: No Santa Rally this Year
It’s evident from the chart below that the S&P500 didn’t experience a Santa Rally this year. Nevertheless, investors should recall that the markets had already received a positive impact from Trump’s election in early November. Furthermore, as mentioned last week, the S&P500 achieved a remarkable return of approximately 24% in 2024, so investors should be pleased rather than disappointed.

S&P 500 November 1st 2024 - January 6th 2025
The S&P 500 was up 4.3% between the 1st of November 2024 and January 6th despite there being no Santa Rally (period shown in the shaded yellow box).

The Power of Inversion in Investing

In our sister newsletter, Business Fluency, we talked about inversion theory. This concept is so fundamental to successful investing that I want to explore it further here, focusing specifically on how it can protect and grow your wealth.
The Art of Thinking Backwards
Consider this: before making any investment decision, what if you first thought about what could go wrong? This approach, known as inversion thinking, was championed by Charlie Munger, one of history's most successful investors. Munger's famous quote captures this perfectly:
"All I want to know is where I'm going to die, so I'll never go there."
In investing, understanding what to avoid can be more valuable than knowing what to pursue.
The Investment Legend
Charlie Munger, serving as Vice Chairman of Berkshire Hathaway alongside Warren Buffett, transformed investment thinking. Rather than solely focusing on potential returns, Munger built his remarkable track record by first identifying and avoiding significant risks. This approach helped Berkshire Hathaway become one of the world's most successful investment companies.
Early Lessons in Risk Management
Munger's risk-awareness mindset developed during World War II, when he served as a meteorologist. Instead of simply seeking perfect flying conditions, he asked himself,
"What conditions would definitely lead to pilot casualties?"
By identifying critical risks - severe icing and excessive distance from landing sites - he developed strategies that saved lives. This same principle can protect your investment portfolio.
Protecting Your Wealth Through Inversion
When applying inversion to investing, start with this crucial question: What's the absolute worst outcome to avoid? The answer is straightforward - losing all your money. This clear understanding leads us to perhaps the most important principle in investing: diversification.
Smart Diversification in Practice
My personal investment strategy reflects this protective approach. The cornerstone of my portfolio is a Global ETF, which provides exposure to numerous companies worldwide. While this investment may fluctuate in value, the probability of it becoming worthless is extremely low - you'd need every major company in the world to fail simultaneously.
For individual stock investments, I never allocate more than 2% of my portfolio to any single company. This means that even if one investment goes to zero (which can happen even to seemingly stable companies), my overall financial health remains secure (and I can sleep easily at night!).
Remember: successful investing isn't just about finding opportunities - it's about systematically avoiding crippling losses. Sometimes, the best investment strategy is simply avoiding the worst mistakes.
How can you apply this thinking to your own investments?
Start by asking yourself:
"What financial scenarios do I absolutely need to avoid?"
Consider that not investing at all, for example by keeping your money in a bank, is also a risk. We will revisit debasement of currency next week.

The Danger of Market Predictions
Last week, we discussed why I avoid making market predictions in these newsletters. Today, let's look at why you should be cautious about basing your investment decisions on anyone's predictions - even those from major investment banks.
Let's consider a real example from last year. At the start of 2024, some of the world's largest investment banks made predictions for where the S&P 500 would end the year. Their forecasts ranged from 4,200 (JPMorgan) to 5,100 (Deutsche Bank). However, the S&P 500 actually closed the year around 5,900 - significantly higher than even the most optimistic prediction!
Even these sophisticated institutions, with their teams of analysts and access to vast amounts of data, couldn't accurately predict the market's movement. JPMorgan's prediction was off by about 1,700 points, while even Deutsche Bank's most optimistic forecast fell short by 800 points.
So what's the answer? My answer is to ignore the predictions and invest regularly (dollar-cost averaging) into a global ETF.
Remember: The market's unpredictability is precisely why we need solid investment principles rather than relying on forecasts - even from respected sources.
S&P 500 performance 2024

S&P 500 November 20th 2023 - December 31st 2024 - TradingView
I began this chart on November 20, 2023, when the Goldman Sachs prediction for 2024 was released. As you can observe, the S&P 500 surpassed its target price for the end of 2024 before the year even commenced (I acknowledge that the market could have had a major pullback to this level).
On a different note, I believe the chart presents an ideal year for investors - it exhibits a consistent upward trend accompanied by healthy pullbacks (indicated by the blue trendlines).
However, it is essential to remember that past performance does not guarantee future results. The chart for 2025 may present entirely different dynamics.

Word of the Day: Crippling
Note: This is a word you should understand but not necessarily use. I used it in the inversion section of this newsletter to provide context. You’ll hear it, so it’s important to understand it. However, be cautious not to offend anyone if you use it because it can inadvertently evoke associations with physical disabilities. An alternative word is catastrophic.
Definition: Crippling - adjective
So severe as to seriously damage or harm someone or something's ability to function
Causing severe difficulties or hardships that prevent normal operation or progress
In financial context: Referring to losses or debts that severely impact one's financial well-being, making it difficult or impossible to recover or maintain normal financial operations.
Example in use:
"A crippling investment loss of 50% would require a 100% gain just to break even."
Related terms:
Cripple (verb)
Crippled (adjective)
Remember: In business English, "crippling" is often used to describe severe financial hardships or operational difficulties that significantly impair but don't completely destroy an organization or portfolio.

Word of the Day: Catastrophic
Definition: Catastrophic - adjective
Involving or causing sudden and widespread disaster or misfortune
Extremely harmful; bringing about ruin or devastation
In financial context: Describing an event or loss that results in complete or near-complete destruction of value or operational capability, often beyond recovery.
Example in use:
"The 1929 stock market crash was a catastrophic event that wiped out many investors' entire savings."
Related terms:
Catastrophe (noun)
Catastrophically (adverb)
Remember: In business English, "catastrophic" implies a more severe and final outcome than "crippling" - while a crippling loss might severely impair operations, a catastrophic loss suggests complete destruction or ruin.
💡 Quick tip: When discussing risk management in finance, "catastrophic risk" often refers to events that could lead to total loss or bankruptcy.

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Do you have any Financial Questions?
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Until next Friday - have a great weekend!
Iain.
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Disclaimer:
This newsletter is for informational and educational purposes only and should not be construed as financial advice. The information contained herein is generic and does not take into account your individual financial circumstances. You should always consult with a qualified financial professional before making any investment or financial decisions.
Additionally, the authors and/or publishers of this newsletter may hold investments in securities or other financial instruments mentioned herein. These are included for illustrative purposes only and should not be taken as a recommendation to buy or sell such securities or financial instruments.