| Active
vs. Passive Management
By Rex A. Sinquefield
Co-Chairman and Investment Policy Committee Shairman
Dimensional Fund Advisors Inc. |
|
The following paper is a transcript of Rex Sinquefield's opening
statement in debate with Donald Yackman at the Schwab Institutional
conference in San Francisco, October 12, 1995.
Let us agree on what we are debating, discussing and disagreeing
about: active vs. passive management. Active management is the
art of stock picking and market timing. Passive management refers
to a buy-and-hold approach to money management. It can be applied
to any asset class: big stocks, small stocks, value or growth,
foreign or domestic can all be accessed by passive techniques.
Neither label, "active" or "passive," is perfect, and there will
not always be a complete dichotomy between them. In any event,
this is a debate about both market behavior and investor behavior.
| Efficient market
theory is the theory postulating that market prices
reflect the knowledge and expectations of all investors.
It asserts that any new development is instantaneously priced
into a security, thus making it impossible to consistently
beat the market. |
With respect to market behavior there are, at the extremes, two
views. At one extreme is the well-known efficient
market hypothesis which says that the prices are always
fair and quickly reflective of information. In such a world neither
professional investors nor the proverbial "little investors" will
be able to systematically pick winners... or losers. At the other
extreme is what I'll call the market failure hypothesis. According
to this view, prices react to information slowly enough to allow
some investors, presumably professionals, to systematically outperform
markets and most other investors.
At the level of investor behavior, this discussion deals with
how a financial advisor should handle his or her clients' money.
It is my contention that active management does not make sense
theoretically and isn't justified empirically. Other than that,
it's O.K. But it's easy to understand the allure, the seductive
power of active management. After all, it's exciting, fun to dip
and dart, pick stocks and time markets; to get paid high fees
for this, and to do it all with someone else's money.
Passive management, on the other hand, stands on solid theoretical
grounds, has enormous empirical support, and works very well for
investors.
At the end of 1973 there was $50 million invested in index funds.
Today, there is roughly $1 trillion invested in passive portfolios
of all sorts in the United States and abroad. Clearly, this is
an idea that is here to stay. A rather impressive group of investors
worldwide believes it is difficult to beat markets and perhaps
better not to try. These investors are responding to a mountain
of evidence that markets work. Such investors believe that in
every asset class they choose, their best course of action is
to accept market returns.
Where is this mountain of evidence? The 20th century has produced
two grand experiments that bear directly on the question "do markets
work?" One experiment took place on the geopolitical stage and
the other in the halls of academia.
The intellectual origin for the role of free markets and the
price system goes back to Adam Smith. He was the first to offer
a comprehensive statement that markets work and that a free market
is the best way for a social order to allocate resources. In his
Wealth of Nations he shows that countries with such a system
prosper, while those without do not.
Friedrich Hayek extended the work of Smith and tried to provide
insight as to why and how the free market system works. The key
idea is that the price system is a mechanism for communicating
information. The knowledge that is relevant for producing any
good or service is never possessed by a single individual or a
single group. Rather, it is dispersed among many market participants.
The price system acts to spread this knowledge and coordinate
the actions of individuals. Perhaps an example from Hayek will
help.
Suppose somewhere in the world a new use for some material, say
silver, has arisen, or that an important source of supply is eliminated.
It is significant that it does not matter what is the cause of
this new scarcity. All that the users of silver need to know is
that silver is now more profitably employed elsewhere and they
should economize. It is not even necessary that the majority of
silver users know the new need. If only some know, they can direct
silver to it highest use and fill in from other sources of supply.
This, in turn, will influence the other users and suppliers of
silver, and the substitutes of silver, and so on. And all the
while, the vast majority may be unaware of the original causes
of these changes. The whole acts as one market, not because anyone
surveys the whole field or knows all the facts, but because the
participants' limited fields of vision sufficiently overlap and,
through intermediaries, communicate the relevant information to
all. Because there is only one price-allowing for transport costs-means
that had there been an all-knowing person possessing all the dispersed
knowledge of the market, his pricing solution could only be the
same as the one chosen by the market. As Hayek pointed out in
his Nobel laureate lecture, we are only beginning to understand
how subtle and efficient is the communication mechanism we call
the market. It garners, comprehends and disseminates widely dispersed
information better and faster than any system man has deliberately
designed.
But there is another side to this story. The ideas advanced by
Adam Smith were not only ideas. An abiding faith in the power
of man's reason was augmented by the success in the physical sciences.
From the middle of the 19th century to the 20th century there
was a growing belief among some intellectuals that man's success
in the physical world could be applied to the social order as
well.
This was in part the intellectual genesis of the first grand
experiment referred to earlier. In 1917, much of the world began
organizing itself-forcibly and brutally-on a belief that centrally
administered prices and planning is superior to a system based
on free market prices. Surely, a group of bright people by intelligent
design and management could increase social welfare better than
a system that was undesigned and unmanaged. So, much of the world
was subjected to socialism. But deprived of a mechanism to gather
and disseminate the widely dispersed information on how to deploy
society's resources for the production of goods and services,
deprived of free market prices, it was inevitable that socialist
countries would collapse. In retrospect, it would be impossible
to design a more controlled experiment at the geopolitical level
than the one we witnessed for most of this century. The verdict
is in. The socialists have thrown in the towel. And in some of
these countries, the new emergent hero is none other than Adam
Smith.
So who still believes markets don't work? Apparently it is only
the North Koreans, the Cubans and the active managers.
Now let us consider the second big experiment, that which began
in academia in the 1950s. The early work of Markowitz, Miller,
Sharpe and Fama was transforming the field of finance from an
ad hoc collection of courses to a serious and legitimate field
of academic and scientific inquiry. Their work shaped and defined
the field of finance and how the investigation of market activity
would proceed over the next thirty years. They spelled out the
idea of market efficiency and provided evidence on its behalf.
The notion of efficient markets was simply a specific application
to the financial markets of the more general idea that free and
competitive markets work. Most people in the western world and
especially in the US are ardent defenders of free enterprise,
which depends on the idea that markets work. The literature on
efficient markets over the last thirty years is a test of that
proposition applied to the capital markets. The resounding success
of these tests should bring joy to any fan of free markets.
Debate about active management vs. passive management began in
earnest in the early 1970s. Already by then, researchers had uncovered
considerable evidence that past prices were of little benefit
in forecasting future prices in ways that would earn excess profits;
that fundamental data was too quickly reflected in prices to allow
such data to be used for beat-the-market purposes; and, most importantly
for us, that professional money managers could simply not outperform
markets in any meaningful sense. The latter tests are most pertinent
for us, and of these, there is not one major published study that
successfully claims that managers beat markets by more than one
would expect by chance.
Several recent studies deserve brief mention. In the first major
study of bond market performance, Blake, Elton and Gruber examine
as many as 361 bond funds for the period starting in 1977. They
compare the various active funds to simple index strategy alternatives.
The authors find that the active funds, on average, underperform
the index strategies by 85 basis points a year. Depending on the
benchmark, between 65 and 80 percent of the funds generate excess
performance that is negative.
In a study of equity mutual funds, Elton, Gruber, Hlavka and
Das examine all funds that existed for the period of 1965-1984,
143 funds in all. These funds are compared to the set of index
funds-big stocks, small stocks and fixed income-that most closely
correspond to the actual investment choices made by the mutual
funds. The result: on average these funds underperform the index
funds by a whopping 159 basis points a year. Not a single fund
generated positive performance that was statistically significant.
In the most recent and comprehensive study done to date, a dissertation
at the University of Chicago, Mark Carhart studies a total of
1,892 funds that existed any time between 1961 and 1993. After
adjusting for the common factors in returns, an equal-weighted
portfolio of the funds underperformed by 1.8% per year.
These studies, along with earlier studies, provide a fifty-year
history of professional investment management. The message is
clear: the beat-the-market efforts of professionals are impressively
and overwhelmingly negative. In any asset class, the only consistently
superior performer is the market itself.
It is well to consider, briefly, the connection between the socialists
and the active managers. I believe they are cut from the same
cloth. What links them is a disbelief or skepticism about the
efficacy of market prices in gathering and conveying information.
Fortunately, there is something that makes these two groups dissimilar
as well. The socialists, all too often, would impose their view
on society, thus producing all the well-known painful consequences.
The cost they impose is a public cost borne by nearly all members
of a society. Active managers, on the other hand, are far more
benign. They do their picking and timing, and because they do
it too often, they impose costs on their clients. But the cost
they impose is a private cost borne voluntarily by their clients.
But the bottom line is, given all the evidence from history, geopolitics
and academia, it just doesn't make sense to believe markets don't
work. It is no longer a credible position.
Finally, aside from these considerations of theory and evidence,
there is a very practical advantage to passive management. Passive
management when applied to a client's entire portfolio is really
asset class investing. This means investing literally in asset
classes via passive portfolios that capture, in their entirety,
the asset class or classes under consideration. For most asset
classes there are long-time series of historical data that allow
us to form reliable estimates of the risk of a given class and
how closely the behavior of that class correlates with the behavior
of other classes. An advisor can estimate the risk of different
combinations of asset categories and find the overall portfolio
strategy that best suits the circumstances and risk tolerance
of his or her client. Thus, a financial advisor can use historical
data to form a long-run plan. That plan can be implemented exactly
by investing in those same asset classes via passive or asset
class portfolios.
A policy formed this way is easy to communicate, is verifiable,
and is eminently defensible. But, in addition, as all studies
to date cogently show, such portfolios will outperform about 75%
of all conventional portfolios.
But a financial advisor forfeits all of these advantages if he
or she abandons passive investing. Actively managed portfolios
seldom bear a reliable relation to any asset class. It is generally
difficult to estimate future risk levels of actively managed portfolios,
or to know how an active portfolio will relate to various asset
classes in the future because such portfolios may experience radical
shifts in their strategy. Thus, it is nearly impossible to engage
in or implement long-range planning if the inputs are actively
managed portfolios.
In short, asset class investing is consistent with what we know
about how free and fair markets function. Active management is
not. Asset class investing is supported by the results of scores
of empirical studies of fifty years of professionally managed
portfolios. Active management is not. Finally, asset class investing
allows reliable planning and implementation of portfolio strategies.
It is demonstrably successful and the most prudent way to invest
a client's money.
By now, ladies and gentlemen, all of you probably agree with
me. Those of you who have been seduced by the dark side of the
force are surely eager to return home. But there is still one
person who disagrees with us. And now it is time to hear from
him.
Thank you very much.
This article contains the opinions
of the author and those interviewed by the author but not necessarily
Dimensional Fund Advisors Inc. or DFA Securities Inc., and does
not represent a recommendation of any particular security, strategy
or investment product. The author's opinions are subject to change
without notice. Information contained herein has been obtained
from sources believed to be reliable, but is not guaranteed. This
article is distributed for educational purposes and should not
be considered investment advice or an offer of any security for
sale. Past performance is not indicative of future results and
no representation is made that the stated results will be replicated.
October 1995