In this PIMCO DC Dialogue, Professor Zvi Bodie, Norman and Adele Barron Professor of Management at Boston University, discusses with global investment managers PIMCO the difficulties people in the United States have assessing risk accurately, the attitude to risk they should adopt when it comes to retirement planning, and investment strategies for professionals and individuals alike, beginning with low-risk assets such as Treasury Inflation-Protected Securities.
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PIMCO DC Dialogue - First Manage Your Risk
1. PIMCO
DC Practice
PIMCO DC Dialogue ™
First manage your risk.
February 2011 In this PIMCO DC Dialogue, we talk with Professor
Zvi Bodie about preparing for retirement, which he
believes is too difficult for the average person without
help from experts. Bodie suggests that retirement investing
should begin with low-risk assets, as participants need to be
This issue features an interview with prepared for the worst – even while hoping for the best. He
Zvi Bodie, identifies Treasury Inflation-Protected Securities (TIPS) as the
The Norman and Adele Barron Professor most prudent asset, explaining that TIPS are the only U.S.
of Management, Boston University Treasury instrument which is contractually tied to inflation.
Moderated by He suggests that adding risk assets to a retirement portfolio
Stacy L. Schaus, CFP , ®
should be done with an understanding of the potential loss.
PIMCO Senior Vice President and He also comments on ways to reduce this risk, including
Defined Contribution Practice Leader
“tail-risk hedging,” which he notes is an old idea that makes
Volume 6, Issue 2
more sense in today’s more liquid markets. As we conclude,
he emphasizes the importance of providing a “soft landing”
from target-date strategies as participants begin to withdraw
their money. Bodie’s retirement math shows that, to
invest the most prudent way, participants need
to save far more or understand that they
will be working to a much older age.
2. DC Dialogue
D
C Dialogue: These days, we know that people, not only in the U.S. but in other
countries, have to be more accountable for preparing for their own
retirement security. How well prepared are they for this reality?
Zvi Bodie: They’re not well prepared at all. And I think that, while it’s true that
there’s no substitute for a person taking responsibility for him- or
herself, it’s also true that the task is way too difficult for the average
person to handle without significant help from experts.
DCD: What type of help do they need from the experts?
Bodie: One of the most difficult type of decisions we all face, and this we
know from a lot of behavioral and psychological studies, is a decision
that involves risk, because most people have the tendency to make
certain errors in judgment. Our brain is more or less hard-wired to
make mistakes when it comes to decisions involving uncertainty.
There’s even a Nobel Prize in Economics given for work in this field.
In fact, Daniel Kahneman won a Nobel for his work on what’s known
as “mistakes in perception” that people make. And one of the biggest
“We may consider mistakes is overconfidence. People have a tendency either to be
TIPS as the closest we unaware of certain risks or to underestimate many types of risk. There
may be very good evolutionary reasons for that – an evolutionary
can get to a risk-free advantage to ignoring certain types of risks – but it’s not necessarily a
portfolio, especially for good thing when it comes to investing for retirement.
retirees who need to DCD: How should people think about risk specific to saving for retirement?
retain the purchasing What are some of the types of risk someone might ignore?
power of their assets.” Bodie: People should hope for the best but prepare for the worst. That is to
say, your future depends largely on how much of your portfolio you’re
going to put into equities and other risk securities as opposed to the
safest asset, which in my book is Treasury Inflation-Protected Securities
(TIPS) – government bonds that hedge inflation. We may consider TIPS
as the closest we can get to a risk-free portfolio, especially for retirees
who need to retain the purchasing power of their assets. Their savings
must keep pace with inflation.
The general tendency is for people to think with certainty that, over the
long run, stocks are going to outperform everything else. And that simply
is not necessarily true. In many ways, the longer your time horizon until
retirement, the more extreme the loss that you can suffer. So there is this
tendency to ignore the possibility of extremely bad outcomes.
DCD: In the past you’ve talked about the financial advice models that
are available to defined-contribution participants, and how they tend
to truncate the tail risk. In other words, investors are not shown the
less probable yet extreme risk they may face by investing in certain
asset mixes.
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TIPS are Treasury bonds, backed by the U.S. government,
but unlike a traditional government bond, the principal and
interest payments on TIPS adjust to track changes in inflation.
Specifically, the principal and interest on TIPS are indexed to
the CPI-All Urban Consumers
(CPI-U) so that increases in consumer prices are directly
translated into higher principal and interest payments on TIPS.
In the unusual event of deflation, which is a sustained fall in “Participants need
prices, the U.S. government guarantees repayment of principal; to understand the
at maturity, investors receive the greater of the inflation-adjusted
risk of extremely bad
principal or the initial par amount. Interest payments on TIPS
would decrease in a deflationary environment because interest outcomes.”
payments are always based on the inflation-adjusted principal
amount, which could potentially be lower than the face value
of the bond in a deflationary environment.
Bodie: Right. And it makes a difference – a huge difference. Participants need
to understand the risk of extremely bad outcomes – the left-tail risk. In
many studies, researchers have found that you can present the same
set of facts about risk and reward; however, depending on how you
frame those facts, you can get exact opposite reactions from the people
making the decisions.
For example, we know that, by definition, the probability of beating your
benchmark is equal to one minus the probability of a shortfall relative to
your benchmark. Those two probabilities have to total to one. And yet, if
you frame the decision in terms of the chances of a shortfall, you may get
a completely different decision from an employee than what you would
have gotten if you’d framed it in terms of beating the benchmark.
DCD: Do you believe investment professionals are properly educated on
investment risk? Do investment texts need to be rewritten?
Bodie: If I were rewriting an old text or writing a new book now, I’d begin
from what I think is the logical starting point in terms of analyzing
investment choices. And that would be taking as little risk as possible.
I say that because the fundamental issue in investment management
and portfolio management is the trade-off between risk and reward.
Ultimately, that’s the tough question: How much risk are you willing to
take to attempt to earn a higher return?
First, I would have to evaluate a whole set of risk-return combinations.
The natural benchmark to that is starting at the point of least risk and
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asking the question, “Well, what if only want to take minimal risk?”
One approach would be to invest 100% of your retirement assets in
inflation-hedged bonds – that is, TIPS. And let’s even assume that all
you’re going to do is keep up with inflation – not earn any real interest
above inflation. So whatever you put in, that’s what you’re going to get
out, no matter how many years in the future you withdraw your money.
That is still a very useful place to start because, by definition, if you’re
going to invest in something that’s riskier and that offers a higher rate of
return, then you have to recognize that there’s a downside to taking on
that risk. So, yes, you may earn a higher return, but you also may lose
principal or not even keep pace with inflation. That’s the downside.
And for people who want to anchor their thinking about risk versus
reward, the most sensible anchor is a safe rate of return or a minimal-
risk portfolio. Again, that’s TIPS.
Now, unfortunately, in this country, “safe investing” is often defined as
“The safest portfolio allocating to cash, which may include such short-term instruments as
is one that locks in Treasury bills and certificates of deposit. The minimal-risk portfolio may
be defined as a 100% cash portfolio. Yet that is not necessarily the case,
an inflation-adjusted and it certainly is not true in the context of a retirement savings plan.
rate of return right I believe the safest portfolio is one that locks in an inflation-adjusted
through to your rate of return right through to your mortality date. And in my opinion
the closest you can get to that is long-term, inflation-protected Treasury
mortality date.” bonds, not cash.
So the way people are thinking about the anchor or risk-free investment
may be wrong. And I’m sorry to say that even my own writing in the
Bodie, Kane, and Marcus investment textbook falls into that same trap
of presenting cash as the lowest-risk asset. Unfortunately, like most
textbooks, we started out talking about risky assets first, discussing
equity investments before we talked about bonds. By presenting the
material in that order, you wind up saying, “All right, so let’s treat cash
as the safe asset.” That’s a bad way to start.
I think cash is a safe asset only if you’ve got a three-month planning
horizon, which may be the case for portfolio managers, whose
performance typically is measured every three months. But it’s not the
case for the ultimate investor – the retirement plan participant.
DCD: So you’re suggesting that investment professionals and investors start
with TIPS as the “risk-free” asset for retirement planning and asset
allocation?
Bodie: Yes. That’s a very, very important point because comparing risky assets
with the need for a “risk-free” asset always depends on the context.
People need safe investments, yes – but risk is defined as relative
to achieving a certain goal. That goal is having a certain amount of
purchasing power at a retirement date that’s way into the future.
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The safest asset in my opinion, is going to be TIPS matched in
maturity or duration to that goal. And that’s a pretty fundamental idea.
DCD: How would you suggest that TIPS be added to defined-
contribution plans?
Bodie: TIPS should be part of both accumulation in and decumulation from
a DC plan, or any retirement plan for that matter. Asset-allocation
strategies such as target-date funds should have TIPS as a core asset.
This follows from what I’ve just been saying, as TIPS are the safe asset.
“The closer one gets
A glide path should manage the TIPS allocation with consideration of
the participant’s age and life expectancy. What’s more, the glide path to the retirement date,
should be focused on meeting the participant’s income the more important
needs in retirement – that’s a primary liability that needs to be
managed for DC participants. it becomes to add
It should also be said that the matching of assets to liabilities, in terms more skill to the
of the cash flow matching, is much easier said than done. You just management of
need to talk to skilled investment managers to get an appreciation
of how hard that is to do. Successful matching of assets to liabilities those assets.”
requires active management and rebalancing.
Having said that, my view is that when people start saving for
retirement early on in the lifecycle, when it’s a distant goal, it may
be perfectly fine to just hold a portfolio of TIPS without any precise
matching. But the closer one gets to the retirement date, the more
important it becomes to add more skill to the management of
those assets.
Ideally, as participants approach retirement age, their assets typically
transition from accumulation to decumulation – to provide a reliable
stream of benefits in retirement. And that may take the form of, for
example, a laddered TIPS portfolio or a life annuity. Either may offer
a level stream of monthly income in retirement. Or there may be a
combination of investments and insurance that may allow for a steady,
inflation-sensitive monthly income for life.
DCD: We know that more DC plans and especially target-date strategies are
being managed with an “outcome” focus, which is typically defined
as meeting a retirement income goal for their participants. How
should plan sponsors and participants think about reaching
this outcome?
Bodie: If you think about the whole investment process or pick up any guide
book to investing, it starts with defining goals, right? Well, goals are
desired outcomes. So when you get through with the whole process,
you get to come back and say, “Well, did I achieve my goals?” In
the case of retirement investing, the goal is some desired standard of
living in retirement. And setting that goal is part of the process that I
recommend in my book Worry-Free Investing and in every other article
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I have ever written on this subject. I always start by saying, “What if
I take the minimum amount of risk? How much would I then have to
save?” Saving is the critical issue here. And these days, you should
assume that you’re not going to earn much. Any contribution you put
in may earn just enough to keep pace with inflation. That’s a pretty
conservative goal. Or you can look at the TIPS yield curve and see that
over the long term it’s close to 2% real return. Well, 2% is much better
than zero.
But recently we’ve had five-year yields that were negative. So it has
become conceivable that a minimum-risk portfolio of TIPS is going to
earn a very low rate of return, maybe even zero. But then, if you’ve
saved enough to achieve your goals, some level of retirement income
with which you’d be comfortable, you can consider taking risk on top
of that. But only when you see that, in fact, you are earning a higher
rate of return can you cut back on saving – maybe.
So that’s the rational approach. And it always comes back to this:
Are you achieving your goals and achieving your desired outcomes?
“What you’re actually
DCD: How do you respond to people who are concerned about the low
doing is trying to or negative earnings on TIPS, especially right now?
ensure some kind of Bodie: Of course, there’s got to be some consideration of what rate of return
minimum level of real you’re going to earn, right down to a zero rate of return which, as
mentioned, is essentially what TIPS are paying right now. But keep in
income in retirement.”
mind, they’re paying zero in real terms – that is, zero above inflation.
But you know what? Money-market strategies and other low-risk
alternatives may be paying negative returns as well, once you adjust
for inflation. So who promised everybody that there will always be
positive returns?
Let me put it a different way. In fact, what you’re actually doing
is trying to ensure some kind of minimum level of real income in
retirement. That can be expensive, right? So if you look at it that way,
you may not want to put all of your retirement money into that zero
rate, that real rate of return, to ensure that. But I think it would be
unwise not to put anything there.
DCD: You recently responded to an article in the Financial Times in which
Professor Jeremy Siegel argued that the conservative investor should
invest in dividend-paying stocks rather than in TIPS (“Inflation-linked
bonds face a headwind of many risks,” Market Insight, February 3,
2011). Can you share your view with us?
Bodie: Yes. I wrote a response to Jeremy’s article, which shares much of what
I’m sharing with you now (“Inflation-linked bonds still best option for
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pension savers,” February 7, 2011). As I noted in the article and quote
here, his recommendation to invest in dividend-paying stocks instead
of TIPS “misrepresents the nature of inflation-linked bonds” – TIPS are
the only U.S. Treasury instrument that provides a contractual link to
inflation, and I believe they are crucial for pension savers.
Now, he may be thinking of investors who already have sufficient
inflation-sensitive income to meet their needs in retirement. That’s not
the case for most people. For the majority of U.S. workers, their DC
plan will need to provide the real retirement income to support their “For the majority of
lifestyle in retirement. They cannot take the risk of jeopardizing the
income needed to cover basic needs for the opportunity for higher
U.S. workers, their
returns. As I wrote in my response, “The higher expected return of DC plan will need
equities over inflation-protected bonds is simply a reward for the risk
to provide the real
of holding equities; it is not a ‘free lunch’ or a ‘loyalty bonus’ for
long-term investors.” retirement income to
Investing in assets other than TIPS adds risk to a participant’s portfolio. support their lifestyle
Determining the appropriate asset allocation should be determined in retirement.”
by the individual, based on their own risk aversion. They need to
understand the risk.
DCD: For those who do want to take on the risk, what other assets should
they consider beyond TIPS?
Bodie: There is a variety of investments for participants to consider beyond
TIPS. The simplest strategy is to hold a broadly diversified portfolio of
all existing risky assets – what the theorists call the “market portfolio.”
And that consists of domestic stocks, international stocks, private
equity, commodities, and real estate. Or you may want to hire an
investment manager who will vary that mix, based on his or her
assessment of the economic conditions and relative values. Again, as
you diversify away from TIPS, it’s important to understand that markets
don’t give up return easily. Participants need to understand this and
make sure they don’t get hurt by wishful thinking.
Something that people forget, which is hard to keep in mind, is that
risk, almost by definition, means that you can make a good decision
and still have a lousy outcome. That’s part of what risk entails. I like to
give an example from medicine where a person may understand that
there’s some risk of dying if he or she undergoes a risky procedure. But
that may still be the wise course of action, considering the pain and
suffering associated with not going through the procedure. Then let’s
say that the operation is performed by highly skilled physicians and the
patient dies. That is one possible outcome. It doesn’t mean it was a bad
decision. It’s a bad outcome.
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Tail-risk hedging refers to hedging against unknown financial
crisis events. These crises are often referred to as “tail-risk
events” because of the way they appear on the “normal”
bell-shaped curve often used to illustrate market outcomes:
The most likely outcomes lie at the center of the curve,
whereas the unforeseen lie at either end or the “tail” of the
curve. The left-tail would comprise the undesirable outcomes.
DCD: Can you talk about other ways to hedge participants’ assets against
risk, especially when equity securities are mixed into target-date
strategies or other asset-allocation structures? For instance, what
about actively managing the risk of market shocks, or what is
referred to as left-tail events, by buying equity puts or other
hedging strategies?
“Tail-risk hedging is Bodie: In the academic community, this idea of cushioning portfolios against
actually not a new market shocks goes way back to the 1970s, when the notion of
dynamic hedging became an active research topic. And that
idea. It’s an old idea
happened largely as a result of the discovery of option-pricing
that has always had models in the early ’70s.
the support of most Then in the ’80s, there was a big flurry of activity, mostly among
academic economists.” pension funds, in the area of so-called “portfolio insurance,” which is
tail-risk hedging by another name. Portfolio insurance got a bad name
because, among other reasons, when the market did decline, it was
very difficult to actually implement these strategies. The strategies
actually failed in some cases, for instance during the 1987 market
correction. Some believe these strategies and the trading required to
implement them may have actually contributed to the market crash
at that time.
Up until the late ’80s, portfolio insurance was a very popular idea.
Now it has returned with a different name and the markets have
changed quite a lot. For example, you did not have index-put options
back in the ’80s. So there was no alternative but to pursue a dynamic
trading strategy, which quite possibly did precipitate that market decline
at that time. With put options such as on the S&P 500 today, that risk
doesn’t exist, because you in theory have someone on the other side of
the put options who’s the counterparty.
So bottom line, tail-risk hedging is actually not a new idea. It’s an old
idea that has always had the support of most academic economists like
me, although we learned early on that you have to be very careful how
you implement it, as is the case with many types of technological and
financial engineering advances.
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DCD: As you know, nearly half of DC plans now automatically enroll
participants, and the majority of the plans default participant assets
into target-date strategies. What’s your view of this continued trend,
especially toward target-date funds? Do you have any comments on
the structure of the glide path – the “through” versus “to” retirement
glide paths?
Bodie: Getting people to save is a positive step. No one would question that.
Target-date strategies are an improvement over defaulting to company
stock, which many companies did in the past. Now, determining “There’s another
what the asset allocation should be is the important issue. The
structure won’t be the same for all populations. For those organizations
reason that you
that offer a pension plan or other retirement-income program, they might want to tilt
may decide to have a more aggressive glide path if their workers’
your retirement
basic income needs are already covered. That won’t be true for most
populations. That said, as we’ve been discussing, I would start with portfolio toward
TIPS as the core asset and then add other fixed income. Adding risk TIPS and other
assets, such as equities, beyond those core holdings should be done
with absolute care. fixed-income
There’s another reason that you might want to tilt your retirement securities, and it has
portfolio toward TIPS and other fixed-income securities, and it has to to do with taxes.”
do with taxes. The differing tax treatment between fixed-income and
equity securities may present an advantage of holding certain securities
in tax-deferred accounts and other assets outside such accounts. For
instance, depending on the participant’s circumstances, they may gain
tax efficiencies by holding equity securities outside of their retirement
plan where these assets may be taxed at a lower rate e.g., capital gains.
Of course, investors should consult with their tax advisor to determine
the tax differences and to come up with a plan on which assets to hold
within or outside of their retirement plan.
Now, that type of tax strategy may be mostly for people in the
higher income brackets. Many participants in 401(k) plans don’t have
investments outside of their retirement account. But certainly, if you
have someone who has, let’s say, half a million dollars in a retirement
account that is tax-sheltered and half a million dollars outside the
retirement account, and he wants to have a total portfolio that’s 50%
in equities and 50% in fixed income, he may want to allocate the assets
both inside and outside of the retirement plan with a tax strategy in
mind. Again, participants should work with their tax advisor to develop
an appropriate strategy for their particular situation.
What’s most important in designing or selecting a glide path is that
you want to make sure that you have a safe landing. A business friend
exactly addresses this issue with an analogy, saying that a very high
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percentage of airplane accidents occur on takeoff and on landing,
compared to a much smaller percentage than you would imagine
during the flight itself. It’s terribly important to make sure you have a
safe landing. And the time to start worrying about that is a good 10
years before you get there.
DCD: What would provide a “safe landing” from an investment
perspective? What does that suggest for a glide path as well as
for retirement-income solutions?
Bodie: I have always believed in what we are now characterizing as DC 2.0.
Why? Because I have always thought that what should determine
a portfolio’s asset allocation is the ultimate goal in terms of what
you want for your outcomes. As the boomers are now approaching
retirement with those trillions of dollars of assets, they are focusing
much more on the final outcome, because up until now, they could
kind of ignore the losses, if there were losses, along the way, since they
weren’t drawing down on those assets.
“What should But that means that as they approach the drawdown phase, they really
should be paying very close attention to the possibility of loss and the
determine a need to lock in a level of real income that will supplement their Social
portfolio’s asset Security benefits, so that they are fully inflation-protected. Again, for
the glide path and retirement income, I’d look first to TIPS.
allocation is the
What’s good about TIPS is that they rely on the credit of the U.S.
ultimate goal in
Treasury rather than on the insurance companies. I mean, if the U.S.
terms of what Treasury were selling Social Security benefits, in other words, life
you want for annuities that are inflation-protected, I’d say buy those.
your outcomes.” DCD: Would you suggest that participants buy a ladder of TIPS rather than
an annuity or other guaranteed-income solution?
Bodie: A TIPS ladder is attractive, but what you’re missing with this is the
longevity insurance that annuities offer. You may want some of that too.
There are multiple risks to consider. With TIPS, you have addressed
credit risk, investing with the U.S. government rather than selecting an
insurance company. You’ve also addressed inflation risk.
By adding longevity insurance, you have covered the risk of your
outliving your assets, but you have reintroduced credit risk for this
portion of your retirement income. One way to reduce this risk is
to diversify across a number of insurance providers, all of whom
have very high ratings. There aren’t that many providers of longevity
insurance at this time, but there are a few.
DCD: What about a systematic withdrawal program that draws down assets
from a diversified portfolio, combined with longevity insurance?
Bodie: The only thing I can say in defense of the systematic withdrawal
programs is that they are an attempt. But it makes much more sense
to me to guarantee some essential level of benefit, which TIPS and
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longevity insurance are designed to provide. And then if you
want to take risk, take it with whatever you have left over after
you’ve covered those essentials.
DCD: How should people think about longevity as they save for retirement?
Bodie: How long we may live is a significant factor in determining how much
we need to save for retirement. While we should all want to live long
lives, when it comes to retirement, a long life becomes a risk – the risk
that we’ll deplete our assets too quickly and not have enough to cover “While we should
our expenses.
all want to live long
To look at the sensitivity of saving for retirement relative to how long
we might live, I suggest using a basic retirement math formula. I start lives, when it comes to
with the assumption that the real interest rate on your savings will be retirement, a long life
zero. This assumption minimizes the impact of investment risk and,
at this time, that’s about what TIPS are paying. Given this assumption, becomes a risk.”
you’ll find that one’s retirement age is a weighted average of the life
expectancy and the age one starts saving.
Here’s my basic formula:
Saving rate × Years of saving = Income replacement rate × Years
of retirement
To determine the projected retirement age: R=(r/(r+s))L + (s/(r+s))B
Let R be the age of retirement; L be life expectancy; B be the age one
starts saving for retirement; s be the saving rate; and r the income
replacement rate.
If we look at an example of someone who wants to replace 50% of
their income in retirement and they begin saving 10% of their pay at
age 25 and expect to live to age 85, they will need to work until age
75. Given the same assumptions and the desire to retire at age 65, this
individual will need to boost their savings rate to 25%. But what if they
live longer than expected – to age 95? Even if they save 25% of pay for
their career, they will not have enough to retire. If they only save 10%
of pay, they will need to wait until age 83.
DCD: Sounds like we better save. But more important, we better enjoy
our work.
Bodie: That’s what it’s all about. I’ve never worked a day in my life.
DCD: Thank you, Zvi.
Bodie: Always a pleasure.
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