Jeremy McInerney (University of Pennsylvania) on thy parallels between Thucydides’ ancient Athens and the US in the modern era:
Bubble, Bubble, Toil and Trouble: The Costs and Benefits of Market Timing
The following article was originally published in Musings on Markets and is reproduced with kind permission of the author, Aswath Damodaran. Aswath is a Professor of Finance at the Stern School of Business at NYU and teaches classes in corporate finance and valuation.
The essay is lengthy, but shows great insight into the current discussion on market valuation, analyzing the motives of various groups (“bubblers”) who have been predicting the demise of the current bull market, and the relationship of Price-Earnings ratios (or its inverse, ERP) to long-term interest rates. His graph of Treasury Bond Rates and Implied ERP, particularly, demonstrates that current market valuations include a higher-than-normal risk premium. And his summation of the current state of affairs at the end is worth close attention.
Click on the images for a larger view. I hope that you enjoy it.
Monday, June 16, 2014
Bubble, Bubble, Toil and Trouble: The Costs and Benefits of Market Timing
The Bubble Machine
- Doomsday Bubblers have been warning us that the stock market is in a bubble for as long as you have known them, and either want you to keep your entire portfolio in cash or in gold (or bitcoins). They remind me of this character from Winnie the Pooh and their theme seems to be that stocks are always over valued.
- Knee Jerk Bubblers go into hibernation in bear markets but become active as stocks start to rise and become increasingly agitated, the more they go up. They are the Bobblehead dolls of the bubble universe, convinced that if stocks have gone up a lot or for a long period, they are poised for a correction.
- Armchair Psychiatrist Bubblers use subtle or not-so-subtle psychological clues from their surroundings to make judgments about bubbles forming and bursting. Freudian in their thinking, they are convinced that any mention of stocks by shoeshine boys, cab drivers or mothers-in-law is a sure sign of a bubble.
- Conspiratorial Bubblers believe that bubbles are created by small group of evil people who plan to profit from them, with the Illuminati, hedge funds, Goldman Sachs and the Federal Reserve as prime suspects. Paranoid and ever-watchful, they are convinced that stocks are manipulated by larger and more powerful forces and that we are all helpless in the face of this darkness.
- Righteous Bubblers draw on a puritanical streak to argue that if investors are having too much fun (because stocks are going up), they have to be punished with a market crash. As the Flagellants in the bubble world, they whip themselves into a frenzy, especially during market booms.
- Rational Bubblers uses market metrics that are both intuitive and widely used, note their divergence from historical norms and argue for a correction back to the average. Viewing themselves as smarter than the rest of us and also as the voices of reason, they view their metrics as infallible and mean reversion in markets as immutable.
Detecting a Bubble
The benefits of being able to detect a bubble, when you are in its midst rather than after it bursts, is that you may be able to protect yourself from its consequences. But are there any mechanisms that detect bubbles? And if they exist, how well do they work?
a. PE and variants
In the graph below, I report on the time trends between 1969 and 2013 in four variants of the PE ratios, a PE using trailing 12 month earnings (PE), a PE based upon the average earnings over the previous ten years (Normalized PE), a PE based upon my estimates of inflation-adjusted average earnings over the prior ten years (My CAPE) and the Shiller PE.
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Normalized PE used average earnings over last 10 years & My CAPE uses my inflation adjusted normalized earnings. Shiller PE is as reported in his datasets |
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T statistics in italics below each correlation; numbers greater than 2.42 indicate significance at 2% level |
First, the negative correlation values indicate that higher PE ratios today are predictive of lower stock returns in the future. Second, that correlation is weak with one-year forward returns (notice that none of the t statistics are significant), become stronger with two-year returns and strongest with three-year returns. Third, there is little in this table to indicate that normalizing or inflation adjusting the PE ratio does much in terms of improving its use in prediction, since the conventional PE ratio has the highest correlation with returns over time periods
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PE measures: 1969-2013 |
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One-year and Two-year stock returns |
b. EP Ratios and Interest Rates
This insight is not new and is the basis for the Fed Model, which looks at the spread between the EP ratio and the T.Bond rate. The premise of the model is that stocks are cheap when the EP ratio exceeds T.Bond rates and expensive when it is lower. To evaluate the predictive power of this spread, I classified the years between 1969 and 2013 into four quartiles, based upon the level of the spread, and computed the returns in the years after (one and two-year horizons):
The results are murkier, but for the most part, stock returns are higher when the EP ratio exceeds the T.Bond rate.
c. Intrinsic Value
Both PE ratios and EP ratio spreads (like the Fed Model) can be faulted for looking at only part of the value picture. A fuller analysis would require us to look at all of the drivers of value, and that can be done in an intrinsic value model. In the picture below, I attempt to do so on June 14, 2014:
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Intrinsic valuation of S&P 500: June 2014 |
The current implied ERP of 4.99% is well above the historic average and median and it clearly is much higher than the 2.05% that prevailed at the end of 1999.
Are we in a bubble?
In the table below, I summarize where the market stands today on each of the metrics that I discussed in the last section:
Bubble Belief to Bubble Action: The Trade Off
- The cost of acting: If you decide to act on a bubble, there is a cost. With the passive defense, the money that you take out of equities has to be invested somewhere safe (earning a risk free rate, or something close to it) and if the correction does not happen, you will lose the return premium you would have earned by investing stocks. With an active defense, the cost of being wrong about the correction is even greater since your losses will increase in direct proportion with how well stocks continue to do. (Note that using derivatives to protect yourself against market corrections or for speculation will deliver variants of these defenses.)
- The benefit of acting: If you are right about the bubble and a correction occurs, there is a payoff to acting. With the passive defense, you protect your investment (or at least that portion that you shift out of equities) from the drop. With the active defense, you profit from the drop, with the magnitude of your profits increasing with the size of the correction.
To illustrate the trade off, consider a simple (perhaps simplistic) scenario, where you are fully invested in equities and believe that there is 20% probability of a market correction (which you expect to be 40%) occurring in 2 years. In addition, let’s assume that the expected return on stocks in a normal year (no bubble) is 7.51% annually and that the expected annual return if a bubble exists will be 9% annually, until the bubble bursts. In the table below, I have listed the payoffs to doing nothing (staying 100% in equities) as well as a passive defense (where you sell all your equity and go invest in a risk free asset earning .5%) and an active defense (where you sell short on equities and invest the proceeds in a risk free asset):
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Future value of portfolio in 2 years (when correction occurs) |
If you remain invested in equities (do nothing), even allowing for the market correction of 40% at the end of year 2, your expected value is $1.0672 at the end of the period. With a passive defense, you earn the risk free rate of 0.5% a year, for two years, and the end value for your portfolio is just slightly in excess of $1.01. With an active defense, where you sell short and invest int he risk free rate, your portfolio will increase to $1.3072, if a correction occurs, but the expected value of your portfolio is only $0.9528, which is $0.1144 less than your do-nothing strategy.
If you feel absolute conviction about the existence of a bubble and see a large correction coming immediately or very soon, it clearly pays to act on bubbles and to do so with an active defense. However, that trade off tilts towards inaction as uncertainty about the existence of the bubble increases, its expected magnitude decreases and the longer you will have to wait for the correction to occur. I know that I am pushing my luck here but I tried to assess the trade off in a spreadsheet, where based upon your inputs on these variables, I estimate the net benefit of acting on a bubble for the passive act of moving all of your equity investment into a risk free alternative:
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Payoff to Passive Defense against Bubble (Correction of 40% in 2 years) |
The net payoff to acting on a bubble generates positive returns only if your conviction that a bubble exists is high (with a 20% probability, it almost never pays to act) and even with strong convictions, only if the market correction is expected to be large and occur quickly.
Bubblenomics: My perspective
It is extremely dangerous to disagree with a Nobel prize winner, and even more so, to disagree with two in the same post, but I am going to risk it in this closing section:
- There will always be bubbles: Disagreeing with Gene Fama, I believe that bubbles are part and parcel of financial markets, because investors are human. More data and computerized trading will not make bubbles a thing of the past because data is just as often an instrument for our behavioral foibles as it is an antidote to them and computer algorithms are created by human programmers.
- But bubbles are not as common as we think they are: Parting ways with Robert Shiller, I would propose that bubbles occur infrequently and that they are not always irrational. Most market corrections are rational adjustments to real world shifts and not bubbles bursting and even the most egregious bubbles have rational cores.
- Bubbles are more clearly visible in the rear view mirror: While bubbles always look obvious in hindsight, it is far less obvious when you are in the midst of a bubble.
- Bubbles are not all bad: Bubbles do create damage but they do create change, often for the better. I do know that the much maligned dot-com bubble changed the way we live and do business. In fact, I agree with David Landes, an economic historian, when he asserts that “in this world, the optimists have it, not because they are always right, but because they are positive. Even when wrong, they are positive, and that is the way of achievement, correction, improvement, and success. Educated, eyes-open optimism pays; pessimism can only offer the empty consolation of being right.” In market terms, I would rather have a market that is dominated by irrationally exuberant investors than one where prices are set by actuaries. Thus, while I would not invest in Tesla, Twitter or Uber at their existing prices, I am grateful that companies like these exist.
- Doing nothing is often the best response to a bubble: The most rational response to a bubble is to often not change the way you invest. If you believe, as I do, that it is difficult to diagnose when you are in a bubble and if you are in one, to figure when and how it will dissipate, the most sensible response to the fear of a bubble is to not change your asset allocation or investment philosophy. Conversely, if you feel certain about both the existence of a bubble and how it will burst, you may want to see if your certitude is warranted given your metric.
Europe leads markets lower
Summary:
- Europe retreats as the Ukraine/Russia crisis escalates.
- S&P 500 displays milder selling pressure and the primary trend remains intact.
- VIX continues to indicate a bull market.
- China’s Shanghai Composite is bullish in the medium-term.
- ASX 200 may experience a secondary correction, but the primary trend displays buying support.
European leaders are waking up to the seriousness of the menace posed by Russia in the East, summed up in a recent Der Spiegel editorial:
Europe, and we Germans, will certainly have to pay a price for sanctions. But the price would be incomparably greater were Putin allowed to continue to violate international law. Peace and security in Europe would then be in serious danger.
Vladimir Putin will not alter course because of a light slap on the wrist. President Obama is going to have to find Teddy Roosevelt’s “big stick” — misplacement of which is largely responsible for Russia’s current flagrant disregard of national borders. And Europe is going to have to endure real pain in order to face down the Russian threat in the East. Delivery of French Mistral warships, for example, would show that Europe remains divided and will encourage the Russian bear to grow even bolder.
Russian Deputy Prime Minister Dmitry Rogozin said, however, that he doubted France would cancel the deal, despite coming under pressure from other Western leaders: “This is billions of euros. The French are very pragmatic. I doubt it [that the deal will be canceled].”
— The Moscow Times
The whole of Europe is likely to have to share the cost of cancelling deals like this, but it is important to do so and present a united front.
Markets reacted negatively to the latest escalation, with Dow Jones Europe Index falling almost 6% over the last month. 13-Week Twiggs Momentum dipped below zero after several months of bearish divergence, warning not necessarily of a primary down-trend, but of a serious test of primary support at 315. Respect of 325 and the rising trendline would reassure that the primary trend is intact.
The S&P 500 displays milder selling pressure on 13-week Twiggs Money Flow and the correction is likely to test the rising trendline and support at 1850/1900, but not primary support at 1750. Respect of the zero line by 13-week Twiggs Money Flow would signal a buying opportunity for long-term investors. Recovery above 2000 is unlikely at present, but breakout would offer a (long-term) target of 2250*.
* Target calculation: 1500 + ( 1500 – 750 ) = 2250
CBOE Volatility Index (VIX) spiked upwards, but remains low by historical standards and continues to suggest a bull market.
China’s Shanghai Composite Index broke resistance at 2150, suggesting a primary up-trend, but I will wait for confirmation from a follow-through above 2250. Rising 13-week Twiggs Money Flow indicates medium-term buying pressure. Reversal below 2050 is unlikely at present but would warn of another test of primary support at 1990/2000. The PBOC is simply kicking the can down the road by injecting more liquidity into the banking system. That may defer the eventual day of reckoning by a year or two, but it cannot be avoided. And each time the problem is deferred, it grows bigger. So the medium-term outlook may be improving, but I still have doubts about the long-term.
* Target calculation: 2000 – ( 2150 – 2000 ) = 1850
The ASX 200 is likely to retrace to test the rising trendline around 5450, but 13-week Twiggs Money Flow holding above zero continues to indicate buying support. Recovery above 5600 is unlikely at present, but would present a target of 5800*. Reversal below 5050 would signal a trend change, but that is most unlikely despite current bearishness.
* Target calculation: 5400 + ( 5400 – 5000 ) = 5800
The Time Has Come for Europe to Act | SPIEGEL ONLINE
From a DER SPIEGEL editorial:
Europe, and we Germans, will certainly have to pay a price for sanctions. But the price would be incomparably greater were Putin allowed to continue to violate international law. Peace and security in Europe would then be in serious danger.
Read more SPIEGEL Editorial: Time to Impose Tough Sanctions on Russia – SPIEGEL ONLINE.
What caused the Dow sell-off?
Dow Jones Industrial Average fell 1.88% to close at 16563, breach of 16750 warning of a secondary correction. Decline of 21-day Twiggs Money Flow below zero would strengthen the signal. Breach of primary support at 15500 is unlikely and the trend remains upward.
* Target calculation: 16500 + ( 16500 – 15500 ) = 17500
The S&P 500 also fell sharply. Reversal below 1950 warns of a test of medium-term support at 1900. Breach of primary support at 1750 again appears unlikely.
* Target calculation: 1500 + ( 1500 – 750 ) = 2250
The CBOE Volatility Index (VIX) spiked up, but remains below 20 — values normally associated with a bull market.
What caused the sell-off? Commentators seem puzzled. Theories advanced vary from Argentinian default to developments in Eastern Europe. Neither of these seem to hold much water: the market has been aware of the risks for some time and they should be largely discounted in current prices. My own preferred theory is the expectation of a rate rise from the Fed. With good GDP numbers and falling unemployment the Fed may be tempted to tighten a lot sooner than originally expected. Even oil prices are falling. High crude prices is one of the reasons for the cautious Fed taper so far.
Which makes me suspect that this correction is going to end like the last “taper tantrum” — with a strong rally when the market realizes that economic recovery will lift earnings.
China: The best way to manipulate GDP is to lower inflation
From George Dorgan:
The best way to push real GDP upwards is, hence, to understate inflation via the GDP deflator. Lombard Street Research assumes that Chinese officials followed that approach:
Via Wall Street Journal Blogs
Lombard Street Research, a London economic research firm that takes a bearish view on China, constructs its own version of the country’s GDP. Lombard’s conclusion: China’s economy grew just 6.1% in the fourth quarter of 2013, year-over-year, down from 7.5% the previous quarter. That compares with the 7.7% fourth-quarter increase reported by China’s statistics bureau, which was down a smidgen from 7.8% in the third quarter.
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The main difference between Lombard’s numbers and the official numbers, said Lombard economist Diana Choyleva, is the estimation of China’s inflation. GDP is reported in real—that is, inflation adjusted — terms. If China’s inflation is higher than reported, its GDP growth will be lower.
Read more at China: The best way to manipulate GDP is to lower inflation.
Treasury market volatility climbs
From Susanne Walker and Lucy Meakin, Bloomberg:
Treasuries dropped, with 10-year note yields reaching the highest level in three weeks, as monthly jobless claims at the lowest level in eight years added to evidence the employment market is strengthening.
U.S. government debt was poised for the biggest monthly drop since March on bets the Federal Reserve will raise interest rates after second quarter economic growth surged past analysts’ forecasts.
The stock market frets that interest rates may rise ….because the economy is recovering and unemployment is falling. And this is bad news?
Read more at Treasury market volatility climbs.
Moscow fights back after sanctions | Reuters
From By Polina Devitt and Gabriela Baczynska at Reuters:
The first European economic victims of the trade war were Polish apple growers, who sell more than half their exports to Russia. Moscow is by far the biggest importer of EU fruit and vegetables, buying more than 2 billion euros’ worth a year.Russia said the ban, covering most Polish fruit and vegetables, was for sanitary reasons and it would look into expanding it to the rest of the EU.
Please buy Polish apples.
Read more at Moscow fights back after sanctions; battle rages near Ukraine crash site | Reuters.
Commodities weaken on soft demand
Crude oil prices fell sharply in July, especially Brent Crude [pink] which is testing support at $104/$106 per barrel. Breach of that support level, or $98/$100 for Nymex Light Crude, would signal a primary down-trend.
Commodity prices have weakened in sympathy, with Dow Jones-UBS Commodity Index falling sharply since breaking support at 133. Expect another test of long-term support at 122/124. Reversal of 13-week Twiggs Momentum below zero strengthens the bear signal.
Retreat of the Baltic Dry Index — which reflects bulk commodity shipping rates — to its 2008 low, shows similar weakness for iron ore and coal.
Waning demand from China is driving down prices.
Gold weakens on Dollar strength
- Treasury yields find support
- Euro signals a primary down-trend
- Dollar continues to strengthen
- Gold weakens
Interest Rates and the Dollar
The yield on ten-year Treasury Notes recovered above 2.50 percent, suggesting that a bottom is forming. Follow-through above 2.65 would strengthen the signal. Reversal below 2.40, however, would confirm a decline to 2.0 percent*.
* Target calculation: 2.50 – ( 3.00 – 2.50 ) = 2.00
The Euro broke primary support at $1.35, signaling a primary decline with a target of $1.30*. Reversal of 13-week Twiggs Momentum below zero confirms the down-trend. Recovery above $1.35 is unlikely, but would warn of a bear trap.
* Target calculation: 1.35 – ( 1.40 – 1.35 ) = 1.30
The Dollar Index rallied on strong GDP figures, testing resistance at 81.50. Breakout is likely and would signal a primary advance with a target of 84*. Recovery of 13-week Twiggs Momentum above zero indicates a primary up-trend. Reversal below 80.50 is unlikely, but would warn of another test of primary support at 79.00.
* Target calculation: 81.50 – ( 81.50 – 79.00 ) = 84.00
Gold
Gold is testing support at $1295/$1300. Failure of support would warn of a primary down-trend. Breach of $1240/$1250 would confirm. Recovery above $1350 is unlikely at present, but would indicate another test of $1400/$1420. Reversal of 13-week Twiggs Momentum below zero would strengthen the bear signal, but oscillation close to the zero line presently signals hesitancy.
* Target calculation: 1200 – ( 1400 – 1200 ) = 1000