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Mustard Seed Money

Mustard Seed Money

The Best Day to Invest in the Stock Market May Surprise You

April 30, 2018

THIS POST MAY CONTAIN AFFILIATE LINKS. PLEASE READ MY DISCLOSURE FOR MORE INFO.

 

Today, I want to share a big secret with you.

 

Are you ready for it?  

 

The best day to invest in the stock market is today.  Yes, that’s right.  If you decide to invest in the stock market, the very best day to invest is on Monday.

 

The Market’s Best and Worst Days of the Week

A study completed by the Journal of Economics and Finance,“The Day of the Week Effect on Stock Market Volatility”, reviewed 25 years of daily S&P 500 data.  They concluded that Wednesday had the highest stock market return, with a robust 0.032% return on this day.

 

Wait a second.  Didn’t I just claim that the best day to invest in the stock market was Monday?

 

Yes I did.  

 

Are you familiar with the old adage, “Buy low and sell high”?

 

If you want to buy low, you shouldn’t buy on Wednesday.  Instead, Monday has historically been the worst day of the week for the stock market.  In fact, it’s actually the only day of the week that, on average, has had a negative return, -0.0028%.  Every other day has had a positive return except for Monday.

 

Why Mondays?

For the life of me, I couldn’t figure out why the stock market underperformed on Mondays.

 

Is it a case of the Mondays, and people simply don’t want to be at work?  Is the stock market hungover from a crazy weekend?  Or maybe it’s something more sinister?

 

In my research, I found that it had less to do with the weekend and more about Friday.  If you look at the news, most companies, and even politicians, typically dump bad news on Fridays, after the stock market has closed.  

 

The thinking is that the stock market will have the whole weekend to digest the news, instead of it reacting poorly the next day when the market opens.  

 

However, while the market does digest the bad information over the weekend, it still affects the company, and for that matter the stock market, as a whole on Monday.  

 

So what does that mean for you?

 

If you’re going to buy on the dips, the only day of the week that research has shown to actually have a historical dip is Monday.  Therefore, if you have the ability to dictate when you dollar-cost average your investments, the best day of the week is clearly Monday.  

 

Best Day of the Month

Bonus time!

 

Let’s say that you can’t dollar-cost average your investment.  Instead, you can only lump-sum invest once a month.  What day would be optimal if you were to do that?

 

In my research, I found that the stock market performs best towards the end of month.  According to Morningstar, in the Fall 2006 issue of The Journal of Wealth Management, researchers John Paglia and Xiaoyang Jiang concluded that the best day to invest was the 23rd day of the month.  They studied the stock market’s performance from Jan. 1, 1990, to Dec. 31, 2005 in order to arrive at that conclusion.

 

Changing When You Invest

Knowledge is power.   

 

Therefore, you should change your investment strategy, right?

 

The Best Day to Invest in the Stock Market May Surprise YouLarry Swedroe says, in The Only Guide to a Winning Investment Strategy,

“If you had invested the same amount on January 1 of every year for 30 years beginning in 1965, your return would have been 11 percent per annum. If you had been unlucky enough to have invested the same dollar amount each year on the day that the S&P 500 Index hit its peak for that year, your return would still have been 10.6 percent per annum. That is less than a 0.5 percent per annum difference in returns. And no one is that unlucky.

 

If, on the other hand, you were lucky enough to have chosen the market’s low for the year, each year, then your return would have only increased to 11.7 percent per annum. That is an incremental return of just over 0.5 percent per annum. And no one is that lucky. If that does not qualify as much ado about nothing, I do not know what would.”

 

As we know, the stock market is not going to be up every Wednesday.  Similarly, the stock market isn’t going to be down every Monday.  While you could potentially get slightly higher returns by investing on Mondays, I personally am not going to get too worried that my 401(k) doesn’t get deposited on Mondays.  Sure, it’d be great, but I’m not going to lose sleep over it.

 

So readers, what day do you dollar-cost average into the stock market?  Have you ever thought about the best day to invest in the stock market? Share your thoughts below.

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12 Comments

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Comments

  1. Leo T. Ly @ isaved5k.com says

    April 30, 2018 at 7:46 am

    I definitely subscribe to the buy low and sell high philosophy. In fact, I take it to the next level and often truest to buy lower and sell even higher by using options.

    When there is bad news relating to the stock that I want to buy, I would sell a put option at a strike price much lower than the current price. If the stock price falls further I will buy it cheaper or get to collect the premium for free.

    On the other hand, if there is good news relating to the stock that I own and I want to sell it, I will sell a covered call option with a strike price much higher than the already increased price. If the stock price does reach the higher price, I would sell it and make more money. If not, then I also make money by keeping the premium for free.

    I love timing the market this way.
    Leo T. Ly @ isaved5k.com recently posted…How Do You Deal With Retirement Fears?My Profile

    Reply
    • Mustard Seed Money says

      May 1, 2018 at 10:03 pm

      Thanks for sharing Leo!!! You definitely have a great strategy that seems to be working. I got burned with options year ago and haven’t touched them sense 🙁

      Reply
  2. Brad - Financial Life Planning says

    April 30, 2018 at 8:15 am

    “The best day to invest in the stock market is today.”

    Amen!
    Brad – Financial Life Planning recently posted…How 8 Key Investing Indexes Performed In The Past 10 YearsMy Profile

    Reply
    • Mustard Seed Money says

      May 1, 2018 at 10:04 pm

      Yes!!! Invest today and not tomorrow when you’re most likely to forget 🙂

      Reply
  3. Tom @ Dividends Diversify says

    April 30, 2018 at 8:34 am

    Hi Rob, I have read these studies in the past. I try not to overthink it. The best day is usually today. Starting earlier/putting the money to work as soon as possible is generally a winning plan. Tom
    Tom @ Dividends Diversify recently posted…The New Millionaires | Demographics | Part 3My Profile

    Reply
    • Mustard Seed Money says

      May 1, 2018 at 10:04 pm

      Absolutely, invest immediately and often 🙂

      Reply
  4. SMM says

    April 30, 2018 at 11:15 am

    Like the classic saying goes it’s time in the market, not timing the market. Start early and invest often 🙂
    SMM recently posted…Payment Plans To Control Cash FlowMy Profile

    Reply
    • Mustard Seed Money says

      May 1, 2018 at 10:05 pm

      You are absolutely right!!! Time in the market matters much more than timing the market 🙂

      Reply
  5. Jason says

    April 30, 2018 at 9:20 pm

    Quite true. Invest today. Not tomorrow, but today.
    Jason recently posted…Credit Card Experiment UpdateMy Profile

    Reply
    • Mustard Seed Money says

      May 1, 2018 at 10:05 pm

      Yesterday was the best day to invest, but today is the next best 🙂

      Reply
  6. Pellrider says

    May 4, 2018 at 9:32 pm

    I never thought of having a good day to invest. But, found that when the market opens, the prices can be up and by just before lunch, it can have a small dip. Got lucky with that a couple of times. Not a big price difference though.

    Reply
    • Mustard Seed Money says

      May 5, 2018 at 10:11 am

      I think I’ve read that the professionals come in at 9:30 to 10:00 and then 3:00 until 4:00. That’s when they “clean up” all the trades from the day 🙂

      Reply

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