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Investing is putting money into something
with the expectation of gain, usually over a long term. Trading is putting your
money into something, but with the intention of quickly thereafter pulling your
money out, then quickly repeating the process over successive new cycles of
putting in/pulling out. Sounds obvious: investors do the former, traders the
latter. Yet countless investors trade their portfolios to such an extent they come
to resemble traders. In this commentary we explain why trading is hazardous to
your financial health and hope to convince you to change your habits. In a
subsequent commentary we explain what drives investors into trading, and what
can be done by investors themselves and by regulators to cure investors of an
expensive habit
Introduction
Trading
forms part of the active vs. passive
investing debate. Our readers know where we stand on this issue- to us active
management is a higher-risk, low probability of success, approach. It typically
engenders greater costs which make the barrier to beating the market that much
greater.
Passive
investors typically trade for two or three reasons, to accommodate cash flows, to
maintain target risk-return tradeoffs i.e. Asset Allocation rebalancing, and
occasionally for tax-loss harvesting (more below on loss harvesting). Any other
trading is a symptom of active investing, and results in what we call excess
trading; see Avoid short-termism: rules
of thumb to borrow, trade or stay in cash
for some other good reasons. .
Active
investing, of which excessive trading is but one example, has a major cost on
investors, on financial markets and on the economy; Kenneth R. French in 2008,
estimated the aggregate cost of active investing as follows:
- The cost of active investing in US equities
is 0.67% If the expected real return on U.S. equity is roughly 6.7% and we
assume the annual dollar cost of active investing will not increase in the
future, society’s capitalized cost of price discovery is about 10% of the current
value of the market. Ken French Presidential address- The cost of active
investing , The Journal of Finance 63, 1537-1573, PDF doc.1993.
Investors who trade to such an extent they come to resemble traders
can be small, retail investors often at discount brokers or wealthy individual
investors often at full service brokers. But don’t feel badly, even mutual
funds and other institutional investors over-trade; on institutional
overtrading, see Zweig Institutions
trade too much - PDF doc.2227.
The impact to investors of excessive trading are of two types: the higher turnover costs
incurred by actively-traded portfolios, clearly a negative; and the impact on
the gross financial returns of actively-traded portfolios compared to less
traded portfolios, a more difficult factor to quantify.
Professional traders
Of course there
are also day traders and other professional traders but they make no pretense
at being investors at all. Professional trading is an occupation with its own
rules and pitfalls that if not followed, will cause grief to the traders; see
RatioTrading . Ironically,
trading too much can even play havoc with professional traders; see Burns 2007 traders over-trade
PDFdoc.2213.
One of our favorite traders is Charles E. Kirk. We encourage you to visit
his web site TheKirkReport and read his free reports on what is required to be a successful trader. You
will quickly realize that few of us have the necessary skills. When amateur
traders transact, professionals like Charles Kirk are often taking contrary
positions. Who do you think comes out on top?
Transaction (turnover)
costs
As a general rule, irrespective of whether an
investor realizes trading gains or losses, he will incur transaction costs,
what we call turnover-related costs. The greater an investor turns-over his
portfolio by selling and buying, the greater his transaction costs.
Commissions
Commissions
are the charges a broker collects to purchase or sell a security as agent for
the investor. They are typically lower at discount brokers (versus full service
firms) and lower in percentage terms the larger the dollar amount of a
transaction. The commission for a share trade is shown on
the confirmation slip.
While
equity commissions have come down in Canada with the increasing popularity of discount
brokers, the overall volume of equity trading in Canada over the last 10 years
has increased about 500%; see Mathisson Credit Suisse
2011 doc.2218, slide 26.
In the US volumes have gone from a 15% annual turnover to 25)5 in 2011; Geer
Bogle interview
doc.2217.
Typically, investors are offered bonds from a
broker’s own bond inventory and transaction costs are built into the bond
price. Clients often don’t know whether a bond is priced competitively or how
much commission they are paying, and for small amounts (eg. Less than $10K
commissions are so high GIC’s or bond funds may be more attractive. For more,
see Conventional bonds
on the Canadian
financial wiki Finiki, and Bebee GandM 2012 Bond trading doc.2212.
Options
are subject to higher commissions than equities. Like shares, the commission
for an option trade is shown on the confirmation slip.
Spread
and market impact trading costs are above and beyond commission costs.
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