Dual Momentum 10 Period System

Classical Dual Momentum (DM) uses a 12 months look-back period to determine the absolute and relative momentum of US equities and International Equities.

Although the 12 months look-back period has historically shown the best results for the strategy, there is no reason to believe it will continue to be so in the future.

Newfound Research (NR) explored that topic in the article “Fragility Case Study: Dual Momentum GEM”. NR proposed a simple approach of dividing the DM portfolio into 7 sub-portfolios each of which runs DM with a different look-back spanning from 6-12months.

Gary, the author of DM, responded to NR with his own post: “Whither Fragility? Dual Momentum GEM”. Gary stands behind the 12 months look-back.

I like Newfound’s 7 look-backs system because it offers diversification by simply incorporating new look-back periods. I liked it so much that I decided to start using a 10 look-backs system for my own trading. I called it “Dual Momentum 10 Period System”. I simply incorporated 3 extra look-backs to the NR system (I added 3, 4 and 5 months look-backs to the system)

(I am putting on hold for the moment my leveraged 1.35x DM strategy. I have yet to consider how leverage fits into a system like "Dual Momentum 10 Period System")

Calculating the signal for this system is more complex than classic DM because we have to calculate 10 individual DM signals (one per look-back, from 3 to 12 months) and then aggregate the results. The end result is a portfolio with variable allocations to US Equities, International Equities and Bonds.

Once a month, on your decided trading date, you have to adjust the portfolio to the allocations that result from aggregating the individual DM sub-portfolios.

To help with this task I created a Python script that automatically calculates the Total Returns for VOO, VEU and BIL for each of the 10 look-backs. The Total Returns of VOO, VEU and BIL are used to compute the signal of the Dual Momentum 10 Period System.

The table below updates daily at around 8:00PM Eastern Time. You can use it as a reference point not only to calculate the signal for the "Dual Momentum 10 Period System", but for Classical Dual Momentum and Newfound’s 7 Period System as well.

Your feedback, questions and comments are most welcome. Drop a note below and I’d be happy to reply.


Constructing a balanced portfolio within your Retirement Group Plan

These days not many Canadians have retirement pensions. In lieu of pensions some employers offer Retirement Group Plans to their employees. 

Both my wife and I are lucky to have access to Retirement Group Plans via our employers. As is typical with these plans the employee contributes to his/her RRSP (within the plan) and the employer matches that contribution up to a maximum percentage of the annual base salary. For example, if the employee contributes 6%, the employer contributes another 6%. The employer caps its contribution at a predefined percentage. I have seen employer contributions typically capped at around 5% - 6%.

These plans are typically administered by an insurance company and have a small choice of segregated funds from which to pick from. The fees of these funds are not great; but there is always room for some “fee optimization” if you browse through all the funds that are offered.

We set on a quest to construct a balanced and diversified portfolio within our plans (administered by Manulife and Sunlife respectively). This kind of portfolio allocates 60% to equities and 40% to bonds. The equity portion is divided equally between American, Canadian and International stocks.

In the spreadsheet below you can see how we constructed the portfolios and more importantly you can see the individual funds fees and the total portfolio fee. I put together another post explaining how to calculate the total fee of any portfolio in case you want to give it a quick read.



You will notice that these funds require you to pay sales taxes. The exact value of what you pay is dictated by the “place of supply” rules and it is very hard to estimate. In the worst case scenario you will pay 15% sales tax; but in general it will be lower than that. I assumed a 15% sales tax for my calculations.

In the spreadsheet you will see the acronyms IMF (Investment Management Fee) and FMF (Fund Management Fees). They mean loosely the same and can be compared with the Management Expense Ratio (MER) of an Exchange Traded Fund (ETF).

The Manulife Balanced Portfolio has a total fee of roughly 0.40%. The Sunlife Balanced Portfolio had a total fee of roughly 0.30%.  As a point of comparison a similar portfolio constructed via ETFs will have a MER ranging from 0.17% - 0.22%

The fees are not great, granted; but the employer’s top up makes it worthwhile. Rebalancing these portfolios requires some work (but not much). You have to make sure you do not trigger short-term trading penalties (totally doable). We are rebalancing our portfolios once a year.

I hope this was useful. Drop a note in the comments section if you have some questions or want to contribute your own ideas. And finally, do not consider this to be investment advice of any kind. I am not an investment advisor and my knowledge of the markets is amateurish.

How to calculate the MER of an investment portfolio constructed from individual funds?

A portfolio can be put together by aggregating various independent funds, each of which carries its own fees.

These fees are expressed as an annual percentage of the value of the fund. Exchange Traded Funds (ETFs) and Mutual Funds normally use the term Management Expense Ratio (MER) to refer to these fees. Funds accessible via Group Plans might refer to them as Fund Management Fees (FMF) or Investment Management Fee (IMF).

Moving forward in this article I will be using the term MER when referring to either of them. This is just a simplification and the reader must infer that the right terminology depends on the type of fund.

The MER of a portfolio can be calculated by knowing the MERs and allocation percentages of the underlying funds. The formula below can be used for such purpose:

MER(P)  = MER(F1) * A (F1) + MER(F2) * A (F2) + … MER(Fn) * A (Fn)


Where:
  • P is the portfolio.
  • F1, F2, …Fn are the underlying funds of the portfolio; for a total of n underlying funds.
  • MER(P) is the MER of the portfolio.
  • MER(Fn) is the MER of fund Fn; with n =1, 2…, n.
  • A(Fn) is the allocation target (in percentage) of fund Fn; with n =1, 2…, n. The sum of all allocation targets should be 100%. In other words, A (F1) + A (F2) + …+ A (Fn) = 100%.

For example:

Let’s consider a portfolio containing 7 underlying funds as in the table below:

Symbol Allocation MER
VUN 23.70% 0.16%
VAB 23.60% 0.13%
VCN 18.20% 0.06%
VIU 13.80% 0.23%
VBG 9.20% 0.38%
VBU 7.20% 0.22%
VEE 4.30% 0.24%


MER(P) = MER(VUN) * A(VUN) +  MER(VAB) * A(VAB) +  MER(VCN) * A(VCN) +  MER(VIU) * A(VIU) +  MER(VBG) * A(VBG) +  MER(VBU) * A(VBU) +  MER(VEE) * A(VEE)

MER(P) = 0.16%*23.70% + 0.13% * 23.60% + 0.06% * 18.20% + 0.23%*13.80% + 0.38% * 9.20% + 0.22% * 7.20% + 0.24% * 4.30%

MER(P) = 3.792%% + 3.068%% + 1.092%% + 3.174%% + 3.496%% + 1.584%% + 1.032%%

MER(P) = 17.238%%

MER(P) = 17.238 / 100 %

MER(P) = 0.17238%

MER(P) = ~0.17%


The MER of the portfolio above is approximately 0.17%. It resembles the underlying composition and allocation targets used in VBAL.

Conclusion: the MER of a portfolio as a whole can be calculated by applying a simple formula that takes the MERs and allocation targets of each underlying fund as input. This calculation provides DYI investors with a way to assess how expensive a portfolio is.

The MER of a VBAL-like portfolio constructed from VBAL constituents

You can construct your own DIY portfolio by sticking to the same underlying ETFs (and allocations) used by the Vanguard Balanced ETF Portfolio (VBAL). At the time of writing the MER of this portfolio that uses VBAL as a template is 0.05% cheaper than VBAL itself.

The spreadsheet below calculates the MER of the VBAL like portfolio by using data contained in the factsheets of VBAL and its underlying funds.  For more details refer to How to calculate the MER of an investment portfolio constructed from individual funds?



If you invest $100 for 20 years this extra cost (0.05%) means you are forgoing $1 in returns for the whole two decades period. This is not bad at all considering that having one found that rebalances itself (as opposed to 7 individual funds) will save you money in trading commissions. Not to mention that it will simplify considerably your investment process.

I would stick with VBAL unless the size of your portfolio is large enough so that the gross impact of that 0.05% can be felt. Also, as your portfolio grows you might want to diversify to other asset classes beyond the basic constituents of VBAL. With a large portfolio you might want to take control of the rebalancing process in the hope of limiting The Luck of the Rebalance Timing. You might prefer your own portfolio in the hope of making it more tax efficient than VBAL; but again, this makes more sense with larger portfolios.

As conclusion: VBAL is a simple and inexpensive option to implement a globally diversified and balanced portfolio with a 60/40 split between stocks and bonds. The 0.05% that you can save by implementing your own portfolio (using VBAL as template) can be thought as the cost for having automatic rebalancing and limiting the trade activity.

Dual Momentum on Steroids

Dual Momentum is a simple investing strategy that has historically beaten the S&P 500 while providing exceptional downside protection. It was published by Gary Antonacci in his book Dual Momentum Investing: An Innovative Strategy for Higher Returns with Lower Risk.

I began my do-it-yourself (DIY) investing journey by investing in couch potato portfolios with a 60% exposure to global equities and 40% fixed income; this portfolio is commonly known as a balanced portfolio. To this day most of my liquid assets are held in this kind of portfolios. 

Then I met Dual Momentum and I felt in love with the strategy. The things I like the most about it are:
  • It is simple, simpler to implement than a couch potato portfolio. Anyone can do it. Chapter 8 of the book explains how to implement it; but I will go over it briefly later.
  • It has delivered great returns historically. Consider this table put together by Gary. The column "GEM Annual" shows the historical annual returns since 1950. GEM stands for Global Equities Momentum which is just an implementation of Dual Momentum.
  • It offers great downside protection when sh__ is hitting the fan. Consider the first chart in this link and draw your own conclusions.
  • This strategy is backed by lots of research and back-testing; not just from Gary but from many others. Hell, you can back test it yourself with sites like Portfolio Visualizer.
  • The strategy requires very little trading activity. It could potentially save you some trading fees.
  • The strategy is somewhat tax efficient (in non-registered accounts) because it generally triggers capital losses when transitioning to bonds in a downturn and it lets the money grow without triggering capital gains in an up trending market. 
In the book Gary covers a variant of the strategy where a 1.30x leverage is used. I decided to implement a similar approach given that the downside protection works pretty well even with leverage and the returns are goosed up by ~3% annually (historically).
I am putting on hold for the moment this leveraged strategy in favor of my "Dual Momentum 10 Period System". I have yet to consider how leverage fits into a system like the "Dual Momentum 10 Period System". That said, I still think that the strategy as described originally in this post makes sense for those wanting to incorporate modest leverage into Dual Momentum.
For this purpose I decided to use PortfolioPlus ETFs PPLC, PPDM and PPEM offering a 135% daily market exposure to the S&P 500, Developed International Markets and Emerging Markets respectively. I am Canadian and these ETFs trade on the US Market; so I converted cheaply some of my loonies to greenbacks with Norbert’s Gambit.

Dual Momentum (DM) dictates that at any given time all the money in your portfolio should be invested in one (and only one) of these: American Equities, Internal Equities (75% Developed Markets ex US plus 25% Emerging Markets) or US Treasury Bills (you can use US Aggregate Bonds as well).  

At the end of each month I use PerfChart to evaluate the DM signal. I use VOO, ACWX and BIL as proxies for US Equities, International Markets and US Treasury Bills respectively. The look-back period I use is 253 days (1 year). Notice that I don’t trade VOO, ACWX and BIL; these are only used to determine the DM signal. From those ETFs the one with the highest total return in the last 253 days will determine where the money will be allocated.

If VOO wins, the money will be allocated into US equities. If ACWX wins, the money goes to International Stocks (both developed and emerging markets). If BIL wins, the money goes to US bonds. Given that I am using a leveraged implementation of DM, then the above translates as:

If VOO wins, 100% of the portfolio is invested in PPLC. If ACWX wins, the portfolio is invested in a 75% PPDM and 25% PPEM split. If BIL wins, 100% of the money is invested in SCHZ.

Dual Momentum is a great strategy for DIY investors. For those looking to juice up the returns while accepting some added risk (but not much) the use of leverage is at hand. For risk adverse investors there are other ways in which DM can be implemented. For instance, in the book Gary describes GEM 70: an implementation of DM where 30% is always allocated to an US Aggregate Bond ETF while the remaining 70% is allocated to equities as per the rules of DM.

(Disclaimer: I am an amateur DIY investor. What I say here should not be considered investment advice. Investing on the stock market comes with risks and you can lose money.)