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Investing Series: What does re-balancing a portfolio and dollar cost averaging mean?

Something that people kept repeating and I didn’t understand when I started, was what “re-balancing a portfolio” meant.

I was imagining a tightrope but I am sure it wasn’t as fun as that.


A portfolio just means all your money.

They say portfolio to make you think of something like a folder to hold all of your investments in stocks, bonds, mutual funds, cash, etc.


The best motto to describe the act of “re-balancing your portfolio” is: “Not keeping all your eggs in one basket”

Re-balancing your portfolio means you’re just making sure you aren’t too heavily invested in one area versus another, based on what you’ve set out as your investing strategy.

It’s like adjusting the wheel of a car — you know how sometimes a car drifts to the right or the left sometimes because it it isn’t balanced or tuned up correctly?

Well re-balancing your portfolio is like taking the wheel and adjusting for it going too far left, or too far right, so that you’re going straight down the road instead.

You have to set a strategy or a roadmap of where you want your money to go, how much growth you want to achieve and what you want to do it with, and then STICK TO THE PLAN.

Stick to using something more like Google Maps, and don’t, under any circumstances, take Apple Maps and get lost in some ocean of bad investments somewhere.

Before we start…


Book value is simply what you paid for it.

If you buy $500 of a fund, or $500 into a stock, your BOOK value is what you paid for – $500.

Over time, the market can have your investment go up (yay!) or down (ewww…), but that CURRENT value of what your investment is worth, is called MARKET value.


Let’s say you have $1000 in your portfolio.

You may have decided you want to put 50% of your portfolio into Index Fund A, and another 50% into Index Fund B.

Your portfolio:

  • $500 Index Fund A
  • $500 Index Fund B

Well, over the year as you invest, let’s say Index Fund A does really well.

You had originally put $500 into Index Fund A, and it is now worth $700, you’re up $200!! YAY!

Index Fund B on the other hand, has gone down; you originally put in $500, but it’s now worth $400, you’re down $100. Boo hiss!!!

Your total portfolio is what it is today, also known as “market value” is the following:

Index Fund A’s Market Value $700 + Index Fund B’s Market Value $400 = $1100

You’re up $100 overall from your original investment.

But the problem is that you now have a lot more money in Index Fund A than you do in Index Fund B, which is not in line with your original investing strategy of a 50/50 split.

Index Fund A = $700 / $1100 = 63% of your money is in this fund

Index Fund B = $400 / $1100 = 37% of your money is in this fund

If you wanted to stick to your 50/50 split, you would need to move some money from Index Fund A to Index Fund B to even things out back to what it was in the beginning.

Think of it like re-distributing the wealth.

If your entire portfolio is now $1100, then 50% of that would now be $550.


When you go to re-balance your portfolio, you would have to move $150 from Index Fund A to Index Fund B, so that they’re both now at $550, or 50% of your entire portfolio of $1000.

You can do this by selling, buying or exchanging your investments (depending on what you bought).

Et voilà! You’re back to 50/50 split, as you had originally intended.

Here’s a handy graphic for you for another example:


You can do it either every quarter (every 3 months), or every year at the end.

Any more than that, and it will (probably) not be worth your time and effort.

May even cost you a lot more money in fees if you are charged any to buy and sell.

I tend to re-balance about 4 times a year, because I take chunks of money and divvy it up into 25% chunks to take advantage of dollar-cost averaging.


It’s just the idea that you are buying a fixed amount over the course of let’s say a year, and on AVERAGE you will pay less, than if you dump in all your money at once (like I do).

To use an example, let’s say you buy a pizza every month as a treat to yourself.

Some months, that pizza costs $10, sometimes it goes up to $11, and sometimes it goes down to $9 because of promotions.

At the end of the year, let’s pretend your average cost of 12 pizzas (one per month), works out to be about $10.50 per pizza.

You would have spent 12 pizzas x $10.50 per pizza = $126 in a year on pizzas

Now let’s say that I also decide to buy some pizza (unbelievable, as I don’t buy takeaway pizza*, but let’s go with this story), but I decide that I want to buy all 12 pizzas all at once in one month because I’m lazy and too impatient to wait for delivery, and I’m planning on eating 1 right away, and freezing 11 for the other months.

If I bought a pizza in a month where it cost $11.

I would have spent: $121 a year in pizzas and about $5 more than you!!

All because because I didn’t want to buy a pizza monthly and take advantage of (inevitable) dollar-cost averaging.

I just bought everything at once, whereas you wanted to buy one each month because you never know whether pizza workers are going to go on strike for more money which means the price of pizzas go up, or maybe it’s a bad month and the businesses need to give a little deal or promotion to get people to buy their pizzas.

Well, where am I going with this delicious analogy?

All of this stuff happens in real life — stocks are up one month, down the next. The only way to take advantage of the lower-prices, is to buy in chunks, spread out over the year.

Otherwise, you’d be trying to time the bottom of the market and buy at the ‘cheapest possible’ floor, and that may not end well for you.

Note: I don’t buy takeaway pizza because I’ve been horribly spoiled with delicious, homemade pizza.

There is no pizza I’ve ever purchased, that tastes as good as what my partner makes at home.




You may be wondering why you would want to move money from an (obviously) great index fund to a crappier one (Index Fund B), or why wouldn’t you just put ALL your money into Index Fund A, and make out like a bandit?

This is because you can’t time the stock market, as evidenced in the years of 2008-2009, and if frankly, if people could time the market, they’d all be millionaires in no time.

In 2008-2009, anyone who had their money in bonds started seeing an increase in value because investors were fleeing the stock market and selling their equities or stocks in the stock market.

If you had most of your money invested in the stock market, you’d be down by a lot if you had sold at that point.

In contrast, if you had invested some of your money in bonds, you would have seen that money go up instead of down during that period, and perhaps the profits from bonds and the losses in stocks would have evened out for you.

You wouldn’t have freaked out as much, because you didn’t lose half of your savings over night.

(Plus it would have helped to not have sold anything and just waited for 5 years for your money to go back up.)

This is also called DIVERSIFICATION, where you don’t put all your money into one area — you put a little bit of it into each area, so that as one goes up, the other goes down, and in the end, you’re still making money.


What it all boils down to is this: being heavily invested in one area over another, is risky (unless you just have money in bonds earning a measly 1% over time), and the amount of risk you can take depends on your current age.

If you’re younger (under 37 I’d wager), you can be more heavily weighted towards stocks because you have time on your side to recover from any portfolio losses.

As you get older and nearer to retirement, you should think about preserving your money, and start weighting it towards bonds so that the money WILL BE THERE when you go to retire.

Otherwise, you might end up like some Baby Boomers who had to recently come out of retirement to make money to keep putting food on the table.


The general sentiment is that stocks will always return more on the whole than bonds, but they are STILL risky investments, even if you invest fairly conservatively.

Over the past 100 years of the stock market, it has always pretty much gone up over time, on a slow incline.

Sure, there were jagged bumps and dips, but the direction is UP, because the stock market continues to get bigger because more money is invested each year, simply because the world population is growing, and there are more people alive today, than 100 years ago.

If you stick all your money in bonds, you will lose out on gains over time (and inflation eats it).

If you stick all your money in stocks, you are risking your nest egg.

The best strategy is always a balanced one, if you don’t want stress and to worry about your money all the time but you still want to preserve your wealth with some moderate growth.


Some people say to take your age.

If you’re 30, you should have 30% of your money in bonds, and 70% in stocks.

Of course, this is assuming your life span is 100, so seeing as people generally live until 77 – 82 years of age, not 100 years old, you can weight it on something more mathematical by age.

Such as: 82 / 4 = 20.5, so you should have 25% of your money at age 20 – 21 (which is at about 25% of your life span), invested in bonds, and 75% in stocks.

Or maybe you just FEEL like you should have 20% in bonds, and 80% in stocks because you’re young, and you have time on your side.

Whatever you decide to do and however you want to calculate it, you have to do it based on how far away you are from needing all that money you’re saving.


The whole point is when you invest, you need to keep an even, steady growth and to not risk losing all your money over night.

This means ignoring what your impulsive human heart tells you to to (put all your money into the fastest growing fund and stock and watch it rise!!), and following a rational, measured, lower-growth-but-wealth-preserving strategy that may be boring, but won’t make you sob in the corner from a drop in the markets.

If you’re invested in all areas of the market, you won’t have to worry (too much) when things go south for one area or another because things are going north for another part of your portfolio.


  • A portfolio is all of your money with a business-y name for it
  • Re-balancing a portfolio is just making sure you adjust your investments
  • You should think about re-balancing 1-4 times a year (depending on fees/costs)
  • Dollar-cost averaging is buying small amounts over a period to get an average cost
  • Timing the market is stupid; no one can claim to know anything definitively
  • You shouldn’t put all your money into one stock or one fund, or style; diversify!
  • Where you put your money depends on your age, and what you want to do with it

Still want to learn more?

I have a book out on investing that might help (it’s Canada-focused) that has information a lot like the above, to teach you about the basics:


  • Mochi & Macarons

    That’s going to be something I’m interested in, but I am near awful at guessing when times will be good or bad. I can only see it in hindsight (obviously), and with basic things like Santa Claus rallies in January.

  • tomatoketchup

    With regard to the various comments about bonds: Japan has been waiting 20 years for that “inevitable rise” in interest rates. Such certainty of knowing what the market will do will likely lead to disappointment. We have no idea what is going to happen.

  • Jacq

    There’s a whole bunch of literature out there saying that the end of the bond bubble is nigh – so I would be very cautious about that. OR if I was going to bonds, it would be very short term bonds.

    I don’t like DCA, and have done value averaging (see Michael Edelson’s book on that) for the last several years. Easier to do in accumulation mode than it is in de-cumulation mode however it seems. Although I’m not in de-cumulating mode yet – hopefully soon!

    • Mochi & Macarons

      Yes!! I should note that in my post that the bond bubble is done.

      I’ve seen the trend of people switching back to equities about sometime in November 2011. That seems to be the time a lot of stocks started taking off, as people took money out and started re-investing it again.

      At least pick bonds in the short-term now, and don’t bet on them going up higher and higher.

      I’ll have to look out at what value averaging is. I’ve only heard of DCA being thrown around. 🙂 I’ll have to write a post on what I find out!

      Thanks 😀

  • The Asian Pear

    I need to diversify my portfolio. Right now most of it is in Canadian mutual funds. I want to start investing in fixed income funds and perhaps US or global.

    • Mochi & Macarons

      Fixed income funds are a good idea. I don’t really like my money in bonds as I’m young, so I like about 10% in there. As I get older, I’ll start switching it out if I need to start preserving capital.

      I like emerging markets, but ultimately they are too volatile for me to hold more than 10% in them. This is all rough guesstimates anyway.

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