The 80-20 Rule: What is it & how it works? (2024)

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While stock market investors rely on several rules to formulate their investment strategies, the 80-20 rule remains the most famous. Before we proceed, if you're wondering, 'what is the 80-20 rule?' - it simply means that 80% of your portfolio's gains come from 20% of your investments.

Here's how this rule plays out in the world of finance and the US stock market.

Importance of the 80-20 rule in investments

Commonly known as the Pareto Principle, the infamous 80-20 rule was ideated by Italian economist, Vilfredo Pareto. While the theory was developed when studying garden pea production levels, it is vital today in the assessment of macroeconomics, finance, budgeting, trading, risk diversification, and several other avenues.

Now, how does the 80-20 rule work in the US stock market? Here are a few 80-20 rule examples:

  • 80% of your portfolio's returns in the market may be traced to 20% of your investments.
  • 80% of your portfolio's losses may be traced to 20% of your investments.
  • 80% of your trading profits in the US market might be coming from 20% of positions (aka amount of assets owned).
  • 80% of the US stock market capitalisation comes from around 20% of the S&P 500 Index.

Common ways of using the 80-20 rule in investments

Now that you know what the 80-20 rule is, it's time to see how it is beneficial in designing and changing your investment approach:

Hedging Risks

By parking 80% of your funds in relatively safer asset classes, you can balance out the risk associated with diversification. For instance, you can invest 80% of your funds in savings bonds, while 20% can be invested in growth stocks or invest 80% in a retirement account and 20% in a taxable portfolio.

Diversifying your trading strategies

Also called system diversification, mixing trading strategies can allow you to maximise returns. If you find 1 or 2 trading strategies guiding 80% of your gains after analysis, you should decide when to focus on these key strategies and when to tweak the underperforming ones.

Deciding on indicators

Investors rely on indicators to gauge the value of a stock. However, adding too many indicators to the mix can give you contradictory readings. Using the 80-20 rule, you can decide which indicators give you the most actionable insights and plan your strategy better.

Rebalancing your portfolio

Rebalancing your investment portfolio lets you trim your losses. By redirecting your funds to the 20% of assets driving 80% of your portfolio's gains, you can minimise losses and cut loose non-profitable investments.

Conclusion

The 80-20 rule is not stock market fail-safe — it's more a basis for evaluating your investments and not predicting what will earn you more. However, investing 80% in blue-chip stocks and 20% in small to mid-cap stocks may be safer if you're dabbling in the US Stock market. To do so, you can bank onFi Money— 0 commission. 0 brokerage. 0 withdrawal fee. Fi enables you to invest in top US companies — at industry-best forex rates. So you can own shares in Apple, Tesla, Microsoft, and so on!

Frequently Asked Questions

1. What Does the 80-20 Rule Mean?

The Pareto Principle or 80-20 rule helps identify the most efficient way of doing things that will bring the most returns. For example: In the investment world — it implies 80% of your returns are from 20% of your holdings. The 80-20 rule is widely used in business, management, and other fields, like the US stock market.

2. What are some examples of the 80-20 rule?

Based on the application of famed economist Vilfredo Pareto's 80-20 rule, here are a few examples:

  • 80% of your stock market portfolio's profits might come from 20% of your holdings.
  • 80% of a company's revenues may derive from 20% of its clients.
  • 20% of the world's population accounts for 80% of its wealth.

The 80-20 Rule: What is it & how it works? (15)

Investment and securities are subject to market risks. Please read all the related documents carefully before investing. The contents of this article are for informational purposes only, and not to be taken as a recommendation to buy or sell securities, mutual funds, or any other financial products.

The 80-20 Rule: What is it & how it works? (2024)

FAQs

The 80-20 Rule: What is it & how it works? ›

The Pareto principle states that for many outcomes, roughly 80% of consequences come from 20% of causes. In other words, a small percentage of causes have an outsized effect. This concept is important to understand because it can help you identify which initiatives to prioritize so you can make the most impact.

How do you use the 80-20 rule to make decisions? ›

The Pareto Principle states that 80% of the effects come from 20% of the causes. If you want to make a real difference in your business, you need to spend the most amount of time focusing on the 20% of things that will give you 80% of your results—and less time worrying about everything else.

How does the 80-20 rule work with money? ›

YOUR BUDGET

The 80/20 budget is a simpler version of it. Using the 80/20 budgeting method, 80% of your income goes toward monthly expenses and spending, while the other 20% goes toward savings and investments.

What is the most productive way to apply the 80-20 rule? ›

Prioritize the first 20% of your workday regarding the tasks you complete and know when it's time to pivot and make changes when working on the remaining 80% to ensure you don't waste too much productive time and energy.

What is the 80-20 rule and why it will change your life? ›

The 80-20 rule is the principle that 20% of what you do results in 80% of your outcomes. Put another way, 80% of your outcomes result from just 20% of your inputs. Also known as the Pareto principle, the 80-20 rule is a timeless maxim that's all about focus.

What is the 80-20 rule real examples? ›

The 80/20 rule is not a formal mathematical equation, but more a generalized phenomenon that can be observed in economics, business, time management, and even sports. General examples of the Pareto principle: 20% of a plant contains 80% of the fruit. 80% of a company's profits come from 20% of customers.

What is an example of the 80-20 rule at work? ›

For business sales, 20% of a company's repeat customers should be responsible for 80% of the sales. Also, 20% of the employees are responsible for 80% of the results. For project management, the first 20% of the effort put in on a project should yield 80% of the project's results.

What are the flaws of the 80-20 rule? ›

The 80--20 rule ignores interdependencies: Pareto principle can be flawed when applied to systems with interdependencies between causes and effects. In such systems, changes in one area can significantly impact other areas, making it difficult to isolate the impact of individual factors.

What is the 80/20 rule in simple terms? ›

The 80-20 rule, also known as the Pareto Principle, is a familiar saying that asserts that 80% of outcomes (or outputs) result from 20% of all causes (or inputs) for any given event. In business, a goal of the 80-20 rule is to identify inputs that are potentially the most productive and make them the priority.

What is an example of a 80 20 budget? ›

For example, if you earn $100,000 per year and pay roughly 20% in taxes (federal & state income and payroll taxes) you have $80,000 left to budget with. Using the 80/20 rule, you would send $16,000 to savings and have $64,000 remaining for expenses.

What is the best chart to show 80-20 rule? ›

The Pareto Chart is a very powerful tool for showing the relative importance of problems. It contains both bars and lines, where individual values are represented in descending order by bars, and the cumulative total of the sample is represented by the curved line.

What is the 80-20 rule in psychology? ›

The Pareto Principle is a concept that specifies that 80% of consequences come from 20% of the causes, asserting an unequal relationship between inputs and outputs. Named after economist Vilfredo Pareto, the Pareto Principle serves as a general reminder that the relationship between inputs and outputs is not balanced.

How to live an 80 20 lifestyle? ›

The 80/20 rule is a guide for your everyday diet—eat nutritious foods 80 percent of the time and have a serving of your favorite treat with the other 20 percent. For the “80 percent” part of the plan, focus on drinking lots of water and eating nutritious foods that include: Whole grains.

How would you use the 80-20 rule at work or in your personal life? ›

Examples of the 80/20 Principle in action include:

Time management: 80% of the results in a project may be achieved with 20% of the total effort. 3. Personal life: 80% of the satisfaction or happiness in one's life may come from 20% of their activities or relationships.

What is the most productive way to apply the 80/20 principle to critical thinking? ›

What's the most productive way to apply the 80/20 principle to critical thinking? Focus on the 20% of efforts that impact 80% of the results. Defining a clear problem statement can help you avoid this common pitfall.

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