Stock Market Rules of Thumb: Four-Year Rule & Sell-Half Rule (2024)

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Stock Market Rules of Thumb: Four-Year Rule & Sell-Half Rule (1)

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Stock Market Rules of Thumb: Four-Year Rule & Sell-Half Rule (2)

The best stock market rules of thumb can help you make better investing decisions. Here’s a look at two of the best: The four-year rule and the sell-half rule

Stock market rules of thumb won’t guarantee investment success. But the best of them can be very useful in helping to boost your portfolio returns.

Here are two we like:

The Four Year Rule gets its name from the length of a U.S. president’s term of office. The rule says that an attractive buying opportunity appears in the stock market about every four years, starting just after the fall mid-term U.S. congressional elections (most recently held in November 2018).

Stock Market Rules of Thumb: Four-Year Rule & Sell-Half Rule (3)

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The sell-half rule recommends that you sell half of a stock that doubles in price and you should be quicker to sell aggressive stocks than conservative stocks. It pays to apply our sell-half rule with stocks we rate as “Speculative” or “Start-up.”

Stock market rules of thumb: The Four-Year Rule

The four-year rule may sound familiar since we’ve written about it many times in the past few decades. In fact, it’s one of the most helpful market rules we’ve ever come across.

Here’s the short version: a particularly attractive buying opportunity appears in North American stocks about every four years, usually within a few months of the U.S. mid-term election (which most recently occurred in November 2018). Investors who buy around this time tend to make substantial profits over the next couple of years.

Most “market rules” turn out to be demonstrations of the fact that random events tend to occur in bunches. The four-year rule is an exception. That’s because it’s based on developments that tend to re-occur in predictable phases of the four-year U.S. Presidential term.

Here are some statistics worth considering. From the election of Andrew Jackson in 1832 till the re-election of Barack Obama in 2012, the U.S. went through 46 complete four-year Presidential terms. (The election of Donald Trump in 2016 marked the start of the 47th term in this series.)

In the first year (that is, the post-Presidential election year) of these 46 four-year presidential terms, the average result for the U.S. stock market was a gain of 2.5%. The average for the second year (the year of the mid-term election) was a gain of 4.2%; the average for the third year (the pre-Presidential election year) was a 10.2% gain; the average for the fourth year (the Presidential election year) was a gain of 6.0%.

You might say that a large majority of North American market gains have occurred in the second half of the four-year U.S. presidential term. The pre-Presidential election year had the biggest average gain. In addition, the U.S. market has gone up in almost all of the last 19 or so pre-election years.

In contrast, the market has gone up in just over half of the past 19 or so post-election years, 12 of the 19 or so mid-term years, and about five of the last Presidential election years.

This pattern probably comes about because of a couple of unchanging things about virtually all U.S. Presidential elections:

First, virtually all U.S. political office holders, regardless of party, want to get re-elected, or pave the way to the election of a successor from their own party.

Second, U.S. Presidential elections bring out many “swing voters” who might not vote in less important elections.

When things are going well for swing voters, they tend to favour the current officeholder, regardless of party. This means current U.S. political officeholders have an incentive to make swing voters happy during U.S. Presidential elections, even if it means cooperating with the opposing party. They start work towards that goal around midway through the four-year U.S. Presidential term, around the time of the mid-term election.

That’s why newly elected or re-elected presidents introduce unpleasant necessities—such as the need to confront China—in the first year or at least first half of the term. Swing voters (or voters generally, for that matter) will have had time to get over the shock of the news before the next Presidential election. In fact, the unpleasant necessities of the first half of the term may be paying dividends by that time.

Stock market rules of thumb: The sell-half rule can be helpful to aggressive investors

Selling half of hot stocks that surge helps you guard your profits. But in general, apply this rule only to more aggressive stocks, and not to the well-established stocks that may surprise you by going a lot higher in the long run.

Selling half after a stock’s price doubles makes sense in a high-risk investment such as a penny mine. That way, you get back your initial stake. This can give you a clearer perspective on what to do with the other half of your investment. If you are too slow to sell speculative stuff, after all, your profits and even your principal can evaporate all too quick.

However, as mentioned, it’s a mistake to apply this rule to your best holdings that are not high-risk investments. To succeed as an investor, you need to hold on to your best picks for lengthy periods. If you’re too quick to sell, you’ll never hold a stock that vastly outperforms the market, and you need a few of those to offset the inevitable disappointments.

What stock market rules of thumb do you follow while making stock picks?

Have you used a stock market rule of thumb that led to a big loss? What happened?

This article was originally published in June 2017 and is regularly updated.

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Stock Market Rules of Thumb: Four-Year Rule & Sell-Half Rule (2024)

FAQs

What is the 3 5 7 rule in trading? ›

What is the 3 5 7 rule in trading? A risk management principle known as the “3-5-7” rule in trading advises diversifying one's financial holdings to reduce risk. The 3% rule states that you should never risk more than 3% of your whole trading capital on a single deal.

What is the 50% rule in stocks? ›

The fifty percent principle is a rule of thumb that anticipates the size of a technical correction. The fifty percent principle states that when a stock or other asset begins to fall after a period of rapid gains, it will lose at least 50% of its most recent gains before the price begins advancing again.

What is the 10 5 3 rule in finance? ›

The 10, 5, 3 rule. This is the expected long-term return from equities 10%, bonds 5%, and cash 3%.

Should I sell half my stock when it doubles? ›

In my opinion, one of the simplest, oldest methods, and most effective ways to help lock in profits and let your winners ride, especially with lower-priced, smaller-cap stocks, is to sell half on a double. This way you take your initial investment off the table and you let your winnings ride.

What is the 123 rule in trading? ›

The 123-chart pattern is a three-wave formation, where every move reaches a pivot point. This is where the name of the pattern comes from, the 1-2-3 pivot points. 123 pattern works in both directions. In the first case, a bullish trend turns into a bearish one.

What is the 70 30 trading strategy? ›

The strategy is based on:

Portfolio management with 70% hedge and 30% spot delivery. Option to leave the trade mandate to the portfolio manager. The portfolio trades include purchasing and selling although with limited trading activity.

Should a 70 year old be in the stock market? ›

Conventional wisdom holds that when you hit your 70s, you should adjust your investment portfolio so it leans heavily toward low-risk bonds and cash accounts and away from higher-risk stocks and mutual funds. That strategy still has merit, according to many financial advisors.

What is the 5 rule in the stock market? ›

This rule involves diversifying your portfolio and never investing more than five percent of your total portfolio in a single stock. While this may sound like a conservative approach, it can actually lead to significant gains over time.

What is the 90% rule in stocks? ›

Key Takeaways

The 90/10 strategy calls for allocating 90% of your investment capital to low-cost S&P 500 index funds and the remaining 10% to short-term government bonds. Warren Buffett described the strategy in a 2013 letter to his company's shareholders.

What is the 1 rule in stock market? ›

The 1% rule demands that traders never risk more than 1% of their total account value on a single trade. In a $10,000 account, that doesn't mean you can only invest $100. It means you shouldn't lose more than $100 on a single trade.

What is the 100 age rule? ›

This principle recommends investing the result of subtracting your age from 100 in equities, with the remaining portion allocated to debt instruments. For example, a 35-year-old would allocate 65 per cent to equities and 35 per cent to debt based on this rule.

What is the 8020 rule in finance? ›

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 day of week is best to sell stock? ›

Many traders and investors believe Friday is the best day to sell stocks. This belief comes from observations of the aforementioned Friday Effect, where stocks often enjoy a slight bump in prices as the trading week comes to a close.

What happens if I keep buying and selling the same stock? ›

What Happens If You Sell and Buy Stock Same Day? If you're already registered to be a day trader, you're all set. But if you're not, your account could be flagged and your account may be restricted. Check with your broker about the rules for executing multiple transactions for the same stock within a single day.

What is the 7 percent sell rule? ›

That brings us to the cardinal rule of selling. Always sell a stock it if falls 7%-8% below what you paid for it. This basic principle helps you always cap your potential downside.

What is the golden rule of traders? ›

Let profits run and cut losses short Stop losses should never be moved away from the market. Be disciplined with yourself, when your stop loss level is touched, get out. If a trade is proving profitable, don't be afraid to track the market.

What is No 1 rule of trading? ›

Rule 1: Always Use a Trading Plan

You need a trading plan because it can assist you with making coherent trading decisions and define the boundaries of your optimal trade. A decent trading plan will assist you with avoiding making passionate decisions without giving it much thought.

What is the 80% rule in trading? ›

The Rule. If, after trading outside the Value Area, we then trade back into the Value Area (VA) and the market closes inside the VA in one of the 30 minute brackets then there is an 80% chance that the market will trade back to the other side of the VA.

What is the 60 40 rule in trading? ›

No matter how long you've held the position, Internal Revenue Code section 1256 requires options in this category to be taxed as follows: 60% of the gain or loss is taxed at the long-term capital tax rates. 40% of the gain or loss is taxed at the short-term capital tax rates.

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