The intensity with
which mean reversion affects an activity is directly proportional to the element of luck controlling the outcome in that activity.
Unlike asset prices in general, for
which mean reversion is a multi-year phenomenon, deviations in market liquidity away from normal levels are very short lived, often lasting only weeks or months.
In other words, analysts are doing nothing more than projecting the relatively recent past into the future, but they're assuming trend continuation while using timeframes at
which mean reversion becomes applicable.
Situations in
which mean reversion does not happen are rare enough as to make a mean reversion assumption a consistent friend to the investor.
Not exact matches
From a «consensual positioning» perspective
which touches on this current «
mean -
reversion dynamic in the marketplace: say this big bond rally were to gather steam into a much more punishing squeeze of the «all - time» UST short base (largely due to the previously mentioned lack of «tolerance» for beginning of year performance pain).
It's just a matter of time before we see a
reversion to the
mean in
which housing prices revert back to the true fundamental condition of the middle class in this country.
Bogle, 87, called me from his Vanguard office at Valley Forge, Pa., on Wednesday to discuss the hedge - fund redemptions,
which he attributes to a surge of competition in the sector and the inevitable «
reversion to the
mean» for returns.
Even technical analysis supports the extent of the washout in valuations: Just 25 % of the Nikkei 225 Index constituents are above their 50 - day moving averages,
which is typically a level that precedes
mean reversion and retracement trades.
Unlike most of our typical investment reports
which focus on free cash flow utilization, net asset value investing,
mean reversion of margins or special situations, this report will look at the investment merits of a company that generates little free cash flow at the moment and is somewhat of a growth investment if company management is successful in achieving its objectives.
I operated in the world of supply and demand
which translates into
reversion to the
mean for an investor.
For investors still seeking a value catalyst beyond interest rates and
mean reversion, we believe there is an additional development
which bodes well for value going forward.
The title has a sly double
meaning, referring both to protagonist Léo's penchant for getting horizontal with nearly every person he encounters while tooling around the French countryside, seeking inspiration for a screenplay he never quite gets around to writing, and to the inherent difficulty of just being human,
which Guiraudie imagines as a constant battle against
reversion to an animal state.
(Note for wonks: I estimated the
mean reversion level (
which is very close to the historic
mean, no surprise) by regressing the one - day lagged Old VIX on the Old VIX itself.
What is more interesting is that the
reversion happens a little faster, at a rate of 28.2 % / month,
which means absent other disturbances, it closes half of the gap to the
mean reversion target over 44 days.
One last note: the standard deviation of the error term was 6.3383 %,
which helps show that in the short run, the volatility of implied volatility is a larger effect than
mean -
reversion.
I have some daily models for interest - rate sensitive sectors that I haven't trotted out yet,
which switch between
mean reversion and
mean aversion that do better than this, but I don't believe them because they are too good.
There are many odd correlation divergences taking place in the gold market, many of
which may redress themselves in the form of
mean reversion if historical patterns play out.
Montier contended that proponents of the new normal also misunderstand fat tails,
which are nothing new and
which «create fat pitches» — the opportunities that investors seek to exploit through
mean reversion strategies.
Hi Professor Damodaran, In discussing
mean reversion for broad equity indexes, here are a few factors that seem potentially relevant,
which I didn't find mention of in your post: 1) Technology network effect: technology revolutions (electricity, transistor, computer, internet, etc) engender decades - long streaks of further invention and commercialization.
For investors still seeking a value catalyst beyond interest rates and
mean reversion, we believe there is an additional development
which bodes well for value going forward.
Here are a few examples of Graham's strategies
which depend on
mean reversion in business fundamentals (
which presumably will also result in market's weighing machine function playing out)
Which markets test well given your outline on
mean reversion part I & II?
They argued that value strategies produce superior returns because most investors don't fully appreciate the
mean reversion phenomenon,
which leads them to extrapolate past performance too far into the future.
All these things look ripe for
mean reversion,
which seems to be a key skill in deep value investing.
The infatuation with growth at any price has reached an historic extreme, as shown, and sets up for a
reversion to the
mean,
which should be meaningful for value investors.
In my book I wrote about there being two lenses through
which we can view financial markets:
mean -
reversion (or value) and momentum.
LSV frame their Contrarian Investment, Extrapolation and Risk findings in the context of «contrarianism,» arguing that value strategies produce superior returns because most investors don't fully appreciate the phenomenon of
mean reversion,
which leads them to extrapolate past performance too far into the future.
Perhaps
mean reversion for these strategies still lies in their future, at
which point the typical negative relationship will become evident.
The
mean reversion strategy trades smaller stocks
which rarely have dividends.
However, in systems
which behave like complex adaptive systems i.e. prone to self correction, both
mean reversion (negative feedback loops) and extreme outcomes (positive feedback loops) are a possibility.
Adopting the discipline of rebalancing bond exposures toward fundamental weights,
which are linked to the economic size of the underlying issuing companies rather than to the amount of debt they have issued, achieves the dual objective of: 1) tilting holdings toward companies with better debt servicing and higher credit ratings; and 2) taking advantage of
mean reversion in securities prices over time.
Lakonishok, Shleifer, and Vishny (LSV) argue that value strategies produce superior returns because most investors don't fully appreciate the phenomenon of
mean reversion,
which leads them to extrapolate past performance too far into the future.
But it would require a much healthier economy
which would cause financial EBITDA margins to go up, thus offsetting the
mean reversion somewhat.
In both cases it is a failure to appreciate the impact of
mean reversion,
which is a cognitive error.
That said, the risk premium factor shows that the largest gains tend to come in the southwest quadrant: low equity valuations and high Baa bond yields,
which is a perfect set - up for
mean reversion.
During the process, I examined the idea of
mean reversion,
which is the force that pushes the intrinsic value and the fundamental business performance.
In Contrarian Investment, Extrapolation, and Risk, Josef Lakonishok, Andrei Shleifer, and Robert Vishny argued that value strategies produce superior returns because most investors don't fully appreciate the phenomenon of
mean reversion,
which leads them to extrapolate past performance too far into the future.
This view is broadly supported by other research on
mean reversion in earnings that I have discussed in the past,
which has suggested, somewhat counter-intuitively, that in -LSB-...]
If I had, I would have started my
mean reversion trading several years earlier,
which would have added several more years of large edges trading.
«When I think of long / short business, to me there's 5 ways to make money: 2 of those are you either play
mean reversion,
which is what a lot of long / short strategies do, or you can play momentum / trend, and that's typically what I do.
The grundnorm of contrarianism is
mean reversion,
which is the idea that stocks that have performed poorly in the past will perform better in the future and stocks that have performed well in the past will not perform as well.
DeBondt and Thaler attribute the earnings outperformance of the companies in the lowest quintile to
mean reversion,
which Tweedy Browne described as the observation that «significant declines in earnings are followed by significant earnings increases, and that significant earnings increases are followed by slower rates of increase or declines.»
The premise of contrarianism is
mean reversion,
which is the idea that stocks that have performed poorly in the past will perform better in the future and stocks that have performed well in the past will not perform as well.
I operated in the world of supply and demand
which translates into
reversion to the
mean for an investor.
Let's test our conjecture that the
mean reversion in fund performance is driven by cycles in factor valuations,
which presents a potential opportunity to use factor relative attractiveness to gauge fund relative attractiveness.
Assuming I'm looking at a company
which is very stable and has a long history of profit, I can use the PE10 to gauge how «cheap» or «expensive» the company currently is and how likely it is that I'll be able to gain from PE10
mean reversion.
Historically it has been
mean reversion of valuation ratios like price to book and price to earnings
which have had the greatest effect on long term equity returns.
Speaking of
which, his professional touchstone in managing investments — his firm had «more than US $ 97 billion in assets under management as of December 2011» — is «
reversion to the
mean»:
I applied the SOI since it goes back to 1880 and one can see the cumulative trend of CO2 forcing together with the natural variations, the latter
which largely cancel out as they go + / - around a
reversion to the
mean.
If there are centennial internal variations — and looking back over the holocene it looks to me there are — then «
reversions to
mean» over a centennial scale will look like a trend on
which shorter decadal length variations will be superimposed.