Thursday , 24 August 2017


Relax! Take Stock Market Bubble Warnings With a Grain of Salt – Here’s Why

Bubble predictions are headline-grabbing claims attract reader/viewership andbubbles push more than a few worried individuals to act but, like all forecasts, these bubble warnings should be taken with a grain of salt. [Here’s why.]

So says Eric D. Nelson, CFA (servowealth.com) in edited excerpts from his original article* entitled Talk of a Stock Market Bubble is Baloney.

[The following is presented by Lorimer Wilson, editor of www.FinancialArticleSummariesToday.com and www.munKNEE.com and the FREE Market Intelligence Report newsletter (sample here – register here). The excerpts may have been edited ([ ]), abridged (…) and/or reformatted (some sub-titles and bold/italics emphases) for the sake of clarity and brevity to ensure a fast and easy read. This paragraph must be included in any article re-posting to avoid copyright infringement.] 

Nelson goes on to say in further edited excerpts:

In case you haven’t noticed, there has been a surge in market forecasts lately claiming that the recent run up in prices has resulted in a stock “bubble”. There is no universal definition of what actually constitutes a bubble, so we’ll settle for the vague description of “a condition where market participants drive stock prices well above their value in relation to some system of stock valuation.” The fear of a bubble, of course, is that when the euphoria ends, prices will fall to more pedestrian levels resulting in a significant loss for existing investors who don’t bail out first.

Pundits have all sorts of valuation metrics they use to compare stock prices to historical trends—from simple one-year price/earnings multiples to “smoothed” ten-year earnings averages relative to price. But none of them provide much accuracy in terms of signaling the precise time to enter and exit the market. The best we can say about them is when valuations are relatively high, future returns may be a bit lower than average and vice versa.

Probably the best method of “bubble detection”, to the extent such a thing is even possible, is to simply observe an investment’s recent past performance history to measure how far in excess of the long-term average it has been. For example:

  • Gold experienced a ten-year run starting in 1971 where it returned almost 32% per year.
  • US small cap stocks earned 27% per year for the decade ending in 1984.
  • Japanese stocks produced over 28% per year returns in the 1980s.

All of these results were well above long-term expectations and unsustainable, as each market eventually “reverted to the mean.” Have we reached this point again?

Table 1 below looks at three different investment portfolios: a traditional US total stock index, followed by two more diversified asset class mixes—an all-stock allocation (“Equity”) and a balanced stock and bond combination (“Balanced”).

For the recent ten-year period, investment returns have been healthy despite the debilitating setback in 2008. The US Total Stock Index earned almost 8% per year. This is far from an alarming rise in prices, as the average over the previous 75 years was 1.7% higher, at +9.6% per year. So far, so good. If lower-than-average returns have created a market bubble, that would certainly be the first time.

How about for more diversified asset class portfolios? They’ve certainly done better than a simple total stock index, but this has always been the case.

In the recent period, the “Equity Asset Class Mix” earned a +10.3% annual return and the “Balanced Asset Class Mix” earned +8.7% per year but these results were both 1.6% per year lower than their long-term historical average using US-only indexes due to availability. What hasn’t changed in either period is the spread of outperformance for the asset class mixes relative to the total stock index—about +2.4% in each period for the equity version, and +0.8% in each period for the balanced version. Of the two, arguably the more impressive result is the balanced mix. Despite its lower level of outperformance, it achieved this feat with about 40% less risk than the US Total Stock Index in each period.

Warren Buffet once said something to the effect that forecasts say more about the person making them than the actual claim itself, and that certainly holds true for bubble predictions. These are headline-grabbing claims that are sure to attract reader/viewership and more than a few worried individuals who will be pushed to act but, like all forecasts, these bubble warnings should be taken with a grain of salt.

We have yet to develop a sure-fire method for predicting when the stock market will take a tumble and, even in cases where extreme and seemingly-excessive price increases do occur, they can continue for much longer than anyone would assume, rendering early action more costly than no action.

In just the last two decades, for example, we’ve seen Nobel Prize-winner Professor Robert Shiller predict both the tech stock and real estate bubbles. Unfortunately, his first warnings were about five years early in each case, and we watched both those markets appreciate another 100% (in the case of the S&P 500 and REIT index) prior to eventually falling. In neither case did subsequent declines come close to retesting the market levels seen when his prognostications were first made.

Conclusion

As for the current state of the global equity markets, things appear to be pretty normal. Recent returns (last 10 years) have been about what we’d expect and within a small margin of error around the longer-term historical perspective. More diversified asset class portfolios have produced a sizable advantage over traditional total stock indexes, or produced similar returns with significantly less risk, but this too is par for the course. So simply put—talk of a stock market bubble is baloney….

[Editor’s Note: The author’s views and conclusions in the above article are unaltered and no personal comments have been included to maintain the integrity of the original post. Furthermore, the views, conclusions and any recommendations offered in this article are not to be construed as an endorsement of such by the editor.] 

*http://servowealth.com/resources/articles/talk-stock-market-bubble-baloney (Copyright © Servō Wealth Management)

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