The first step of asset allocation – the strategic step – is finding an asset allocation
breakdown that meets your individual needs. This means that you should end up with
a breakdown that you can live with no matter what happens in the market; even in
the case of an extreme shock triggering a temporary markdown of the portfolio. You
should not lose sleep over your investment portfolio.
Market shocks
Markets are subject to shocks every once in a while and the risk premia investors
are vesting by investing in bonds, equities, and other types of financial investments
fluctuate all the time. This triggers ups and downs and mark to market volatility
in portfolios. In the case of external shocks, which can be pretty extreme, the
temporary impact on the portfolio can be quite harsh. The other case when portfolios
suffer a significant drawdown is when the economy goes into a recession. Your strategic
allocation should be such that you can survive these events in the markets.
Risk and return
The first question you need to ask yourself when deciding upon your asset allocation
is ‘what is my investment objective’? Here, the most important step is defining
your risk tolerance, as you will calibrate your asset mix as a function of the amount
of risk you are willing to take. The return of the portfolio over time will be a
function of the amount of risk you have been willing to accept or not.
Forward-looking approach
Once you have defined your risk tolerance, you can begin allocating your assets.
There are various ways to build an asset allocation, but the one way that I have
rejected from very early on in my career is the backward-looking way. This method
involves looking at past returns and correlations, but given that the starting point
is different, the outcome will be different too. Furthermore, all of these models
rely on correlation assumptions and a high degree of stability in correlation between
assets. But history shows that correlations are the exact opposite: they are very
unstable. In other words, the way that each and every asset class behaves in relation
to the others is not stable over time.
Portfolio building
Once you have decided on your asset class breakdown, you need to decide how you
are going to implement each and every asset class that makes up your portfolio.
Will you pick a fund? Will you pick an ETF? Will you buy direct securities? Will
you invest passively or actively? For both active and passive investing, you have
to pick the right instrument and this is about making sense of the whole portfolio,
because the sum of the parts is far more important than each and every individual
part.
The investment horizon
The next consideration is the time horizon of your investments. If your strategic
allocation is well calibrated with regard to your risk tolerance, the longer the
time horizon, the better. This is in every investing textbook. But the matter is
– life is uncertain and as Keynes said, in the long run we are all dead. The paradox
is that the longer you are patient, the less uncertain investing becomes. Of course,
you cannot tell everyone that they need to wait for 20 years; commercially it is
simply not viable. Only a pension fund with extremely clear liabilities can do that.
Therefore, I think that a four- to seven-year horizon is a reasonable, pragmatic
timeframe for a private investor. You should not spend too much time predicting
the future. You need to diversify precisely because the future is unknown and is
very uncertain.
Portfolio adjustments
Within that window, though, you might be tempted to adjust your portfolio. Most
of the time it is important to stay the course and stick to your strategy. Whether
you should act and do something different will be a function of what happened in
the markets. I always say that an investment manager can only be as good as the
opportunities allow him to be. There will often be opportunities along the way to
either take some profits and reinvest some capital in other asset classes or to
rebalance or buy more of what you already own but it is really the markets that
provide these opportunities over time. The volatility regime will also be very important.
There will be times when volatility will be low and the dispersion of asset return
is rather low, so why would you move? But there will also be times when volatility
is higher, providing opportunities to trade.
Rebalancing
Rebalancing has the merit of bringing discipline. You could argue that someone who
is very young, with a very long time horizon could start with half equities, half
bonds. Eventually over time, the equities would outperform the bonds, so the share
of equities will increase. But the circumstances of individuals will change over
their lifetime; their liabilities, their family, their personal situation will change,
so no rebalancing is not an option either.
In short, you should fundamentally revisit your strategic allocation once a year.
Again, I cannot emphasise enough how important the secular outlook is, as you need
to understand the structural trends and then position yourself accordingly. If you
rebalance, the frequency of the rebalancing should be at a maximum once a year,
and not at the end of the year. Rather, it should be on June 30, the way that endowment
funds typically practice rebalancing.