Forum Topics An interesting theory on SP Volatility
Solvetheriddle
Added 4 months ago

A THEORY EXPLAINING THE VOLATILITY OF SOME SHARE PRICES

The book I just finished, “Investing the last liberal art”, gives a fascinating theory on the share price (SP) volatility in some stocks. I tend to agree with this theory.

The theory starts with the assertion that market participants break down into two broad categories, being fundamentalists and trend followers.

Fundamentalists believe in the concept of an intrinsic value of a stock which is generated from (broadly) the PV of future cashflows or one of its many derivatives, such as PE. Over time the SP will gravitate towards an intrinsic value. The intrinsic value is volatile given the vagaries of the future and the sensitivity to various assumptions. For different stocks the spread of probable outcomes will vary around the central case, some very significantly, say WOW v WBT. Some stocks will have a relatively tight range, others wide.

In this world Alpha comes from having a different view from consensus ie the view embedded in the share price, and being correct. This is the world of the fundamentalist. SP volatility exists in this world, as new information is received, the future becomes more certain and the SP reacts accordingly, up or down. I would describe that as acceptable or rational volatility.

There is another world. That is the world of the trend follower. These folk have no belief in intrinsic values. They may not know what they are, do not care, or think they are irrelevant. Fugazi as one of my old bosses used to say (and probably still does).

Trend followers on the other hand are driven by SP action. A high share price attracts interest and the higher it goes attracts more buyers. The theory goes that the share register churns as fundamentals sell out as the SP rises and the register then becomes dominated by trend followers. I am no expert on their strategies, but it appears they are driven by positive SP performance. “all-time highs” are great and exciting, whereas the fundamentalists see increasing risk. A divergence occurs.

Trend followers may backfill with a story, random facts, to support their views, or whatever but it is of secondary importance. Signs of a share register dominated by trend followers may be, stocks that talking heads say you have to own, it going up, strong share price moves (up or down) on no news or trivial information. Like a herd of gazelles looking at a rustle in the bushes that may be a lion they move back and forth, which leads to volatility.

The risk is that as momentum strategies take little or no view on fundamentals the SP can deviate significantly from intrinsic value. How these guys make many, I suspect, is being able to play the crowd psychology, with the understanding that when the game is up, get out fast. Maybe there will be several headfakes at this. Timing appears to be critical, SP momentum is critical.

The worst thing that can happen is when investors adjust their intrinsic values and follow the SP higher with little other evidence. I have seen this, many times, with all its destructive impacts. As if the SP is proving them correct, no matter how high it goes.

It would be useful if investors would self-nominate whether they are momentum trend followers or fundamentals before they invest and the ASX tracks the movements in the register. We would then see for eg, in the last 3 months 90% of all new buyers are momentum players, they know the ticker and SP nothing else, danger! danger! –that’s a joke BTW, when has the ASX done anything useful for retail investors?

As a fundamental investor, I have found the instances when momentum players control a register, frustrating and confounding. A stock I have sat in for months or years suddenly takes off, I sell at a modest gain only to see the thing 3-10X. Usually, the SP comes down a couple of years later, but quite frustrating. Maybe there is a pragmatic way to play this, separating a fundamental playbook and a momentum playbook, where you are well aware you are skating on thin ice. There are clearly professional investors not afraid, ashamed or whatever at playing the Mo game. I will leave that to people much more skilful than me, that those people exist is certainly true! Lol.



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mikebrisy
Added 4 months ago

@Solvetheriddle that's a great description, and aligns with my own mental model (so, of course I like it!)

Having listened to Ausbiz for several years, I am amazed at how many brokers / fund managers / commentators appear to be momentum/technical "actors". As a fundamental investor with a bias for holding stocks long term, I always try to understand how much of the analysis, recommendations and price action on stocks are being driven by "momentum".

This is a challenge, primarily because I only get to read a small proportion of the equity research out there. Sometimes, you can see it in the headline summaries. For example, the recent Bell Potter increase in TP for $BIO appears to be due to a tweaking of the discount rate. My judgement of that is that the analyst wants to keep the TP ahead of the current momentum and, accordingly, has tweaked a parameter in their "model" to do this. As a result, I put that research clearly in the "momentum" bucket and tend to ignore it.

One observation I have made of equity research is that I believe there is quite a bit out there posing as "fundamental" whereas it is actually "momentum". When you are able to read multiple research reports on a stock by the same author over time, or listen to a talking head comment on the same stock over time, even those that present as "fundamental" reveal their "momentum" spots.

Part of this is behavioural and I suspect even unconscious. For example, when I reflect on my own analysis over the years, I can also see how my "fundamental" projections have been influenced by recent "momentum".

The point of all this is to ask can we truly classify views as "fundamental" or "momentum"? In practice, does both analysis and buying/selling behaviour present a blend of both to varying degrees in each "actor"?

Finally, to use your analogy, I am not holding out fundamentalists as superior to momentum traders. After all, the gazelle that senses the herd twitch when the lion really does emerge from the rushes, and bolts away faster than the herd, gets to live another day.

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Solvetheriddle
Added 4 months ago

@mikebrisy fair enough Mike, you have focussed on stock broker research reports, and having read tens of thousands of them in my day, i would say they are variable. stockbrokers' main purpose is to run a profitable business, so who is the important client that pays the bills? It may not be a long-only, long-term investor, it could be a grab bag of momentum, HF's, L/S, traders, investors, and speculators, so you get that "something for everyone" in research which averages to average!

the point i am trying to make here is that stocks are probably semi-efficient most of the time, but that doesn't necessarily mean stable (they move with new info). when trend followers are dominant and you see huge run-ups in SP, that sets the catalysts for crashes in stocks or markets and just to be aware of that. some investors will profit, and most will do their dough, as always. The underlying message is that the SP should not be taken as indicating any information regarding intrinsic value, in these rare (but eye-catching cases) and trying to fit a fundamental story around excess momentum is a mug's game.

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Slideup
Added 4 months ago

@Solvetheriddle I think that is a very apt description of sp swings.

I think this sentence is very true- The worst thing that can happen is when investors adjust their intrinsic values and follow the SP higher with little other evidence. I have seen this, many times, with all its destructive impacts. As if the SP is proving them correct, no matter how high it goes.

There is nothing wrong with momentum as a strategy but I think it is dangerous if you mistake momentum with skill and justify the rising price. Separating out price movements from intrinsic or fair value is one of the hardest parts of investing for me. It is so easy to think you are right when the share price goes up and think you are wrong when it moves down. In reality, price is the most prominent but least relevant, in isolation, indicator of value-- but as a primarily fundamentalist investor I would say that!

You see a lot of talk about the market knows best and the wisdom of crowds, but what is lost is that the crowd is only wise if all of the guesses are independent from each other, without that each guess is influenced by the others and any wisdom is lost. Its very hard for commentary not to shape your view. Even strawman is a bit of an echo chamber at times, but this is largely unavoidable.

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Rick
Added 4 months ago

@Solvetheriddle @mikebrisy @Slideup I think all these points of view are correct. How many of us who claim to be value investors take no notice of the share price charts? What I mean is, not just the current share price which is what we are comparing our valuation with, but share price support levels and resistance levels, 12 month highs and lows, or trends and momentum in the share price, or what the talkings heads are saying about share prices? If we were true value investors we would shut out everything but the fundamentals and the current share price!

The longer I invest the more I agree with Morgan Housel “Every forecast takes a number from today and multiplies it by a story about tomorrow”, whether that be a story about fundamentals, sentiment and technical charts, the macro etc etc. All of these stories come together in the market place to determine today’s share price.

Take a read of Morgan Housel’s Blog from Sep 2021, and see if any of this rings true for you?https://collabfund.com/blog/numbersandstories/

Here are a few points from the blog:

1. A fact multiplied by a story always equals something less than a fact. So almost all predictions have less than a 100% chance of coming true. That’s not a bold statement, but if you embrace it it always pushes you towards room for error and the ability to endure surprise.

2. The most persuasive stories are what you want to believe are true or are an extension of what you’ve experienced firsthand, which is what makes forecasting so hard.

3. If you’re trying to figure out where something is going next, you have to understand more than its technical possibilities. You have to understand the stories everyone tells themselves about those possibilities, because it’s such a big part of the forecasting equation.

4. When interest rates are low, the story side of the equation becomes more powerful. When short-term results aren’t competing for attention with interest rates, most of a company’s valuation comes from what it might be able to achieve in the future. That, of course, is just a story. And people can come up with some wild stories.

I guess that leads to yet another type of investor - the philosophical investor! :)

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