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Seasonal Allergies

October 14, 2014 7 comments

Come get your commodities and inflation swaps here! Big discount on inflation protection! Come get them while you can! These deals won’t last long!

Like the guy hawking hangover cures at a frat party, sometimes I feel like I am in the right place, but just a bit early. That entrepreneur knows that hangover cures are often needed after a party, and the people at the party also know that they’ll need hangover cures on the morrow, but sales of hangover cures are just not popular at frat parties.

The ‘disinflation party’ is in full swing, and it is being expressed in all the normal ways: beat-down of energy commodities, which today collectively lost 3.2% as front WTI Crude futures dropped to a 2-year low (see chart, source Bloomberg),

front_crude

…10-year breakevens dropped to a 3-year low (see chart, source Bloomberg),

10y_breaks

…and 1-year inflation swaps made their more-or-less annual foray into sub-1% territory.

1ycpiswaps

So it helps to remember that none of the recent thrashing is particularly new or different.

What is remarkable is that this sort of thing happens just about every year, with fair regularity. Take a look at the chart of 10-year breakevens again. See the spike down in late 2010, late 2011, and roughly mid-2013. It might help to compare it to the chart of front Crude, which has a similar pattern. What happens is that oil prices follow a regular seasonal pattern, and as a result inflation expectations follow the same pattern. What is incredible is that this pattern happens with 10-year breakevens, even though the effect of spot oil prices on 10-year inflation expectations ought to be approximately nil.

What I can tell you is that in 12 of the last 15 years, 10-year TIPS yields have fallen in the 30 days after October 15th, and in 11 of the past 15 years, 10-year breakevens were higher in the subsequent 30 days.

Now, a lot of that is simply a carry dynamic. If you own TIPS right now, inflation accretion is poor because of the low prints that are normal for this time of year. Over time, as new buyers have to endure less of that poor carry, TIPS prices rise naturally. But what happens in heading into the poor-carry period is that lots of investors dump TIPS because of the impending poor inflation accretion. And the poor accretion is due largely to the seasonal movement in energy prices. The following chart (source: Enduring Investments) shows the BLS assumed seasonality in correcting the CPI tendencies, and the actual realized seasonal pattern over the last decade. The tendency is pronounced, and it leads directly to the seasonality in real yields and breakevens.

seasonal

This year, as you can tell from some of the charts, the disinflation party is rocking harder than it has for a few years. Part of this is the weakening of inflation dynamics in Europe, part is the fear that some investors have that the end of QE will instantly collapse money supply growth and lead to deflation, and part of it this year is the weird (and frustrating) tendency for breakevens to have a high correlation with stocks when equities decline but a low correlation when they rally.

But in any event, it is a good time to stock up on the “cure” you know you will need later. According to our proprietary measure, 10-year real yields are about 47bps too high relative to nominal yields (and we feel that you express this trade through breakevens rather than outright TIPS ownership, although actual trade construction can be more nuanced). They haven’t been significantly more mispriced than that since the crisis, and besides the 2008 example they haven’t been cheaper since the early days (pre-2003) when TIPS were not yet widely owned in institutional portfolios. Absent a catastrophe, they will not get much cheaper. (Importantly, our valuation metric has generally “beaten the forwards” in that the snap-back when it happens is much faster than the carry dynamic fades).

So don’t get all excited about “declining inflation expectations.” There is not much going on here that is at all unusual for this time of year.

What Risk-Parity Paring Could Mean for Equities

October 9, 2014 14 comments

The stock market, the bond market, the commodities markets (to a lesser extent), FX markets – they are all experiencing a marked increase in volatility.

Some observers want to call this bearish for equities, mainly because they already are bearish. This is a very bad reason. While really bad equity returns almost always occur coincident with a rise in volatility – the old maxim is that stocks go ‘up on the staircase and down on the escalator’ – that does not mean that volatility causes bad returns. Or, put another way, there are also periods of increased volatility that do not precede and are not coincident with bad returns.

However, there actually is a reason that increased volatility might lead to poor short- to medium-term returns, that isn’t based on technical analysis or spurious correlations. Moreover, a relatively new phenomenon (the rise of so-called ‘risk-parity’ strategies) is starting to institutionalize what was already a somewhat natural response to volatility.

In ‘risk-parity’ strategies, the weight of an asset class (or a security within an asset class, sometimes) is inversely proportional to the risk it adds to the portfolio. Generally speaking, “risk” here is defined as variance, because it is easy to estimate and there are markets where symmetrical variance trades – i.e., options markets. But what this means is that when volatility (sometimes realized volatility, and sometimes option “implied” volatility) rises in stocks, then risk parity strategies tend to be shedding equities because they look riskier, and vice-versa. Right now, risk parity strategies are likely to be overweight equities because of the long period of low realized and implied volatility (even though the valuation measures imply quite high risk in the sense most of us mean it, in terms of the probability of return shortfall). Risk parity strategies are probably superior to ‘return-chasing’ methodologies, but by being ‘risk-chasing’ they end up doing something fairly similar when they are all operating together.

Note that while risk-parity strategies are comparatively new – well, not exactly because it is an oldish idea, but they have only recently become a big fad – this general phenomenon is not. The natural response to greater equity market volatility is to pare back exposure; when your broker statement starts to swing around wildly it makes you nervous and so you may start to take some profits. This is also true of other asset classes but it seems to me to be especially true in equities. Nobody who gets involved in commodities is surprised at volatility: the asset class suffers from a midguided belief that it is terribly volatile even though commodity indices are just about exactly as volatile as equity indices over time. But equity investors, contrariwise, seem perennially surprised at 2% moves.

So, while the recent volatility doesn’t mean that a move lower in equities is assured, it increases the probability of such because risk-parity strategies (and other investors reacting nervously to overweights in their equity exposure) will begin to scale back positions in the asset class in favor of positions in other asset classes, probably mostly bonds and commodities. At this point it would be good for me to point out that only the very short-term volatility measures have moved up dramatically; the VIX is well off its bottom but only up to 18.8 and it has been there numerous times in the last few years (see chart, source Bloomberg). But the longer the volatility continues like we have seen it for the last week or two, the bigger the chances that the asset-allocation boxes start to make important shifts (and the quant hedge fund boxes will probably move a bit before those asset allocation boxes do).

vix

As an aside, the tendency for asset allocation shifts to follow volatility shifts is not the reason that the VIX displays a strong inverse directionality. Neither is the main reason for this inverse directionality because the VIX is a “fear gauge.” The main reason is that the VIX weights near-the-money options more heavily than out-of-the-money options. Because options skews almost always imply more downside volatility for stocks than upside volatility[1], when the market declines it tends to bring more “high volatility” strikes into play and so part of the VIX increase in a down market is simply mechanical.

I am not calling for a sharp decline in stocks, nor for an extended decline in stocks. My position and view is as it has long been, that the prospect for attractive real returns from equities over the next 5-10 years is quite small and beaten handily by commodities’ prospective returns at that end of the risk spectrum. I don’t think that most investors (me included!) should swing asset allocations around frequently in response to technical indicators or such things as “momentum”, but rather should focus on evaluating expected long-term returns (which are somewhat predictable) and invest for value. And I must admit I also think that “risk-parity” is a clever marketing gimmick but a pretty absurd way to assemble a portfolio for almost everyone. My point here is to highlight one little-considered aspect of herd behavior, and how that herd behavior may have become more institutionalized as late, and to consider the risks that herd behavior may create.

[1] This in turn is not due so much from the tendency of markets to have more downside volatility than upside volatility, but from the fact that buying protective puts and selling “covered” calls are both considered “conservative” options strategies. So, out-of-the-money puts tend to be too expensive and out-of-the-money calls too rich.

Why So Many Inflation Market Haters All of a Sudden?

September 25, 2014 6 comments

The inflation market offers such wonderful opportunities for profit since so few people understand the dynamics of inflation, much less of the inflation market.

One of the things which continually fascinates me is how the inflation trade has become sort of a “risk on” kind of trade, in that when the market is pricing in better growth expectations, reflected in rising equity prices, inflation expectations move with the same rhythm.[1] The chart below (source: Bloomberg) shows the 10-year inflation breakeven rate versus the S&P 500 index. Note how closely they ebb and flow together, at least until the latest swoon in inflation expectations.

beistocks

Your knee-jerk reaction might be that this is a spurious correlation caused by the fact that (a) bond yields tend to rise when growth expectations rise and (b) when bond yields rise, the components of bond yields – including both real rates and expected inflation – tend to rise. But look at the chart below (source: Bloomberg), covering the same period but this time charting stocks versus real yields.

realplusspx

If anything, real yields ought to be more correlated to movements in equities than inflation expectations, since presumably real economic growth is directly related to the real growth rates embedded in equity prices. But to my eyes at least, the correlation between real interest rates and equity prices, for which there is a plausible causal explanation, doesn’t look nearly as good as the relationship between stocks and inflation expectations.

It doesn’t make any sense that long-term inflation expectations should be so closely related to equity prices. I know I have mentioned before – in fact, regular readers are probably sick of me pointing it out – that there is no causal relationship between growth and inflation. Really, it is worse than that: one really needs to torture the data to find any connection at all, causal or not. The chart below (source: Bloomberg) shows quarterly real GDP in yellow against core inflation in white.

coreandgdptimeseries

I’ve pointed out before that the big recession in ’08-09 saw almost no deceleration in core inflation (and none at all if you remove housing from core inflation), but it’s hard to find a connection anywhere. The next chart (source: Bloomberg) makes the point a different way, simply plotting core inflation (y-axis) against real GDP (x-axis) quarterly back to 1980.

gdpcoreinflationregression

In case anyone out there is protesting that there should be a lagged relationship between growth and inflation, I am happy to report that I was able to get an r-squared as higher as 0.257 with a lag of 12 quarters. Unfortunately, the lag goes the wrong way: high inflation precedes high growth, not vice-versa. And I don’t know anyone who proffers a reasonable explanation of a causality running in that direction. Lags the other way fail to produce any r-squared over 0.1.

So, how to explain the fact that since the end of August we have seen 10-year real rates rise 29 basis points while 10-year breakevens were falling 12bps (producing a net rise in nominal rates of only 17bps)? The explanation is simple: the market is wrong to treat breakevens as a “risk on/risk off” sort of trade. Breakevens have cheapened far too much. I don’t know if that means that TIPS yields have risen too much, or nominal yields have risen too little (I rather expect the former), but the difference is too narrow. The short end of the US curve (1 year inflation swaps are at 1.44%) implies either that core inflation will decline markedly from its already-depressed level well below median inflation, or that energy prices will decline sharply and much further than implied by gasoline futures.

I think that one of the reasons US inflation has been under pressure is that it is currently at a very large spread versus European inflation, and earlier this month it was at the highest level in at least a decade (see chart, source Enduring Investments).

USCPIHICPxt

This may look like an appealing short, perhaps, but based on our internal analysis and some historical relationships we track we actually believe the spread is too low by about 50bps. And think about it this way: if Europe really is in the process of inheriting Japan’s lost decade, then 10-year expectations for the US ought to be much, much higher than in Europe. I don’t really think Europe will end up there, because the ECB seems to be trying to do the right thing, but it is not unreasonable to think that there should be a hefty premium to US inflation over Europe.

[1] Of course, the correlation of levels won’t be very good because stocks have an upward bias over time while inflation expectations do not. To run the correlation, you’d have to de-trend stocks but I’m trying to make a visceral point here rather than a quantitative one.

Meteorologists and Defenseless Receivers

September 15, 2014 Leave a comment

The stock market really seemed to “want” to get to 2000 on the S&P. I hope it was worth it. Now as real yields seem to be moving higher once again (see chart below, source Bloomberg) – in direct contravention, it should be noted, of the usual seasonal trend which anticipates bond rallies in September and October – and the Fed is essentially fully ‘tapered’, market valuations are again going to be a topic of conversation as we head into Q4 just a few weeks from now.

realyields

To use an American football analogy, the stock market right now is in an extended position like a wide receiver reaching for a high pass, but with no rules in place to prevent the hitting of a defenseless receiver. This kind of stretch is what can get a player laid up for a while.

Now, it has been this way for a long time. And, like many other value investors, I have been wary of valuations for a long time. I want to make a distinction, though, between certain value investors and others. There are some who believe that the more a market gets overvalued, the more dramatic the ensuing fall must be. These folks get more and more animated and exercised the longer that the market crash doesn’t happened. I think that they have a point – a market which is 100% overvalued is in more perilous position than one which is a mere 50% overvalued. But we really must keep in mind the limits of our knowledge about the market. That is, while we can say the market is x% overvalued with respect to the Shiller PE or whatever our favorite metric is, and we can say that it is becoming more overextended than it previously was, we do not know where true fair value lies.

That is to say that it may be – I don’t think it is, but it’s possible – that when stocks are at a 20 Shiller PE (versus a long-term average of 16) they are not 25% overvalued but actually at fair value. Therefore, when they go to a 24 PE, they are more overvalued but instead of 50% overvalued they are only 25% overvalued because true fair value is, in this example, at 20. What this means is that knowing the Shiller PE went from 20 to 24 has no particular implications for the size of the eventual market break, because we don’t actually know that 16 really represents fair value. That’s an assumption, and an untestable assumption at that.

Now, we need assumptions. There is no way to keep from making assumptions in financial markets, and we do it every day. I happen to think that the notion that a 16 Shiller PE is roughly fair value is probably a good assumption. But my point is that when you’re talking about how much more overvalued a market is than it was previously, with the implication that the ensuing break ought to be larger, you need to remember that we are only guessing at fair value. Always. This is why you won’t catch me saying that I think the S&P will drop eventually to some specific figure, unless I’m eyeballing a chart or something. In my mind, my job is to talk about the probabilities of winning or losing and the expected value of those wagers. That is, harking back to the old Kelly Criterion thinking– we try to assess our edge and odds but we always have to remember we can’t know either for certain.

Bringing this back to inflation (it is, after all, CPI week): even though we can’t state with certainty what the odds of a particular outcome actually are, we can state what probability the market is placing on certain outcomes. In inflation space, we can look at the options market to infer the probability that market participants place on the odds of a certain inflation rate being realized over a certain time period (n.b. the market currently only offers options on headline inflation, which is somewhat less interesting than options on core inflation, but we can extract the latter information using other techniques. For this exercise, however, we are focusing on headline inflation.)

What the inflation options market tells us is that over the next year, market participants see only about an 18% chance that headline inflation will be above 2.25% (that is, roughly the Fed’s target, applied to CPI). This is despite the fact that headline inflation is already at 2%, and median inflation is at 2.2%. So the market is overwhelmingly of the opinion that inflation declines, or at least rises no further, from here. You can buy a one-year, 2.5% inflation cap for about 5-7bps, depending who you ask. That’s really amazing to me.

Looking out a few years (see table below, source Enduring Investments), we see that the market prices roughly a 50-50 chance of inflation being above the Fed’s target starting about three years from now (September 2016-September 2017, approximately), and for each year thereafter. But how long are the tails? The inflation caplet market says that there is no better than a 24% chance that any of the next 10 years sees inflation above 4%. We are not talking about core inflation, but headline inflation – so we are implicitly saying that there will be no spikes in gasoline, as well as no general rise in core inflation, in any year over the next decade. That strikes me as … optimistic, especially since our view is that core inflation will be well above 3% for calendar 2015.

Probability that inflation is above
in year 2.25% 3.00% 4.00% 5.00% 6.00%
1 18% 5% 3% 1% 0%
2 41% 19% 8% 3% 1%
3 46% 25% 11% 5% 3%
4 50% 31% 15% 7% 4%
5 52% 35% 18% 10% 6%
6 50% 35% 19% 11% 7%
7 50% 36% 21% 13% 8%
8 49% 37% 22% 14% 9%
9 48% 37% 23% 15% 10%
10 47% 37% 24% 16% 11%

What is especially interesting about this table is that the historical record says that high inflation is both more probable than we think, and that inflation tails tend to be much longer than we think. Over the last 100 years (since the Fed was founded, essentially), headline inflation has been above 4% fully 31% of the time. And the conditional probability that inflation was over 10%, given that it was over 4%, was 32%. In other words, once inflation exceeds 4%, there is a 1 in 3 chance, historically, that it goes above 10%.

Cautions remain the same as above: we cannot know the true probability of the event, either a priori or even in retrospect when the occurrence will be either probability=1 (it happened) or probability=0 (it didn’t). This is why it is so hard to evaluate meteorologists, and economists, after the fact! But in my view, the market is remarkably sanguine about the prospects for an inflation accident. To be fair, it has been sanguine…and correct…for a long time. But I think it is no longer a good bet for that streak to continue.

Enter the Draghi

September 4, 2014 6 comments

While we wait for our Employment Report tomorrow, there is plenty of excitement overseas.

The dollar continued to strengthen today, with the dollar index reaching the highest level since the middle of last year (see chart, source Bloomberg).

dollarindex

As with the rest of the dollar’s strengthening move, it was really not any of our own doing. The dollar is simply, and I suspect very temporarily, the best house in a bad neighborhood right now. In the UK, the Scots are about to vote for independence, or not, but it will be a close vote regardless. In Japan, the Yen is weakening again as the Bank of Japan continues to ease and Kuroda continues to jawbone against his currency.

In Europe this morning, the ECB surprised many observers by cutting its benchmark rate to the low, low rate of just 5 basis points (0.05%), and lowered the deposit rate to -0.2%…meaning that if a bank wants to leave money sitting at the ECB, it is forced to pay the ECB to hold it. A negative deposit rate is akin to the Fed setting interest on excess reserves at a negative figure, something that makes great sense if the point of quantitative easing is to get money into the economy. In the Fed’s case, it turns out that the real point was to de-lever the banks forcibly, so it didn’t care that the reserves were sitting inert, but in the ECB’s case they would really like to see inflation higher (core inflation for the whole Eurozone is under 1%) so it is important that any increase in the balance sheet of the central bank is reflected in actual currency in circulation.

Right now, the negative deposit rate isn’t so important since the ECB holds negligible deposits. But the negative deposit rate was step one; step two is to gin up the quantitative easing again. ECB President Draghi had promised several months ago to do so with ‘targeted LTRO’, and today he delivered by saying that the ECB has decided to begin TLTRO in October. The ECB will “purchase a broad portfolio of simple and transparent securities” even though some observers have noted that there aren’t a lot of asset-backed securities in the market to buy (but trust Wall Street on this: if there is a buyer of a few hundred billion Euros’ worth of such securities, those securities will be issued. Wall Street isn’t good at everything, but they’re darn good at finding ways to satisfy a motivated, huge buyer. (See “subprime MBS”).

This is significant, as I said it was when Draghi first mentioned this back in June. It is significant if they follow through, and at least at this point it appears they mean to do so. Now, Europe still needs to fight against the dampening effect on money velocity that lower interest rates are having, but at least they recognize the need to get M2 money growth above the 2.7% y/y rate it is at presently (which is, itself, above the 1.9% rate of the year ended April). Money growth in Europe is currently the lowest in the world, and – surprise! – deflation is the biggest threat in Europe. Go figure.

How does this affect inflation in the US?

Changes in the global money supply contributes to a global inflation process that underpins inflation rates around the world. The best way to think about the fluctuations in exchange rates, with respect to inflation, is that they allocate global inflation between countries (or, alternatively, you can think of inflation as being “global” plus “idiosyncratic”, where a country’s idiosyncratic inflationary or disinflationary policies affect the domestic inflation rate and the exchange rate with other countries). So, the ECB’s aggressive easing (when it happens) will have two main effects. First, it will tend to push up average inflation globally compared to what it would otherwise have been. Second, it will tend to weaken the Euro and strengthen the dollar so that inflation in Europe should rise relative to US inflation – all else being equal, which of course it is not.

With respect to this latter effect, I need to take pains to point out that it is a small effect, or rather than the relative movements in the currency need to be a lot bigger to be worth worrying about. A stronger dollar, in short, is not going to put much pressure on US inflation to be lower. The chart below (source: Enduring Investments) shows a proxy we use for core commodities inflation, ex-medical, against the broad trade-weighted dollar lagged 9 months.

eimodelcorecomm

You can see that core commodities respond broadly to the dollar’s strength or weakness. A 5% rise (decline) in the dollar causes, nine months later, a 1% decline (rise) in core commodities inflation, ex-medical care commodities. Core ex-medical care commodities represents about 18% of the consumption basket, and the dollar’s effect outside of that part of the basket is indeterminate at best, so we can say that a 5% rise in the dollar causes inflation to decline about 0.18%.

In short, don’t waste a lot of time worrying that the 4% rise in the dollar this year will lead to deflation any time soon. Against that 18% of the consumption basket, we have 57% of the basket (core services) inflating at 2.6%, and over half of that consists of primary and owners’ equivalent rents, which are rising at 3.3% and 2.7% respectively and have a lot of upward momentum. Unless the dollar shoots dramatically higher, it should not affect overall prices very much.

Back to School!

September 3, 2014 2 comments

Back to school! It is the beginning of September, post-Labor Day, and students everywhere are back to school.

It is the time of year when investors, too, tend to be schooled – as bond markets tend to strengthen and equity markets to weaken (relative to the overall drift). It doesn’t happen every year, but the tendency in fixed income markets is strong enough that, as a rule, I demand much stronger reasons to sell bonds in September and October than during the rest of the year.

This year, we appear to be in for a special treat. We all get to learn new acronyms, like ISIS, and Americans are learning where Ukraine is on a map of the world. What fun.

Monetary policymakers tend to be resistant to further lessons, since after all they have had so many years of book learning that, darn it, they should know enough by now! And yet – there is so much about economics and monetary policy that we just don’t know; so much that isn’t knowable; and so much that we know with great confidence but just isn’t so.

However, I have been delighted to find that recently, the subject of money velocity has been appearing more frequently in policy circles. To a monetarist, velocity is one of a very small handful of things that matter, and its absence from discussions among the learned has been a terrible sign that monetarism was not merely in retreat, but almost extinct. And yet, the predictions of monetarism have been borne out time and time again (that is, the actual predictions, not the idea that printing money causes economic growth – a prediction that presupposes a high degree of money illusion is at work), while the predictions of Keynesian economists have only worked once the parameters are revised post-hoc to fit the crisis. Increased money supply growth got Japan out of its deflationary spiral – as predicted. None of the Keynesian solutions deployed over the last two decades have worked, but the first attempt at serious money-printing worked. (Although it remains to be seen if the BOJ will keep its pedal to the metal; it certainly hasn’t yet “doubled the money supply” as it had pledged to do).

High money growth – that is, transactional money and not inert reserves – always accompanies high inflation. For a time, money growth may be offset by declining money velocity, but we also know quite a bit about what causes money velocity to move. Last year I cited a rare paper by a central banker (Samuel Reynard at the Swiss National Bank) that really had insight on these almost-forgotten tenets of monetarism. And this year, I am delighted to note that some economists at the St. Louis Fed have published a brief note entitled “What Does Money Velocity Tell Us about Low Inflation in the U.S.?” While the authors, Yi Wen and Maria Arias, mistakenly focus on the velocity of base money, and thus reach an incorrect conclusion that individuals are “hoarding” money (when it in fact is sitting in bank reserves, untouched), it is nevertheless the right topic and the right question, and that’s most of the battle.

I have previously shown the chart of interest rates and money velocity, so let me show it again.

m2andrates

This is important, because it’s the single biggest risk to a significant inflation accident. While the low vacancy rate and the rapid growth in housing prices will continue to push rents higher, bringing median and/or core inflation above 3% by early next year, we can live with 3%. The risk for much worse inflation is all tied to a rebound in monetary velocity. It bears repeating. From 2008 to 2013, money growth was rapid but declining money velocity (tied to interest rate declines, mainly) restrained inflation. If money growth remains at the same level but money velocity merely stabilizes, it is consistent with inflation of 3%-4%. But if money velocity reverses even a part of its post-crisis decline, then inflation could move appreciably higher. Since Q2 of 2008, the velocity of M2 has fallen at a 3.76% annualized rate; were that to reverse, with the same money supply growth, then the 3-4% inflation becomes 6.75%-7.75% inflation, which I think we would all agree is a bad thing.

Now, the unfortunate thing is that models of velocity that incorporate interest rates and certain other factors already indicate that money velocity should be rising. The chart below shows our proprietary model of money velocity; as you can see, since mid-2013 there has been a large and growing gap between what the model implies and where money velocity has actually been recorded. This might well mean that the model is wrong. But we should also take it as indicating the risk of a rise in velocity is real, whether it is a 1% or 2% rise per year, or a 15% snap-back over a shorter period of time.

eimodelvel

As I always admonish, that’s a big picture concern, and not something to trade tomorrow. I would be gradually accumulating positions in inflation swaps, caps, breakevens, and broad commodity indices. There is time before people start to get really concerned. But to my mind, what is interesting is that the central bankers are now at least starting to reconsider velocity.

When In Doubt, Add a Parameter

With heavy travel over the last week and looming over the next couple of weeks, I figured that I really ought to get an article out before everyone forgets that I write a blog.

It isn’t that there is a dearth of topics. I have so much to talk about that I am brimming over; however, between the usual press of our Quarterly Inflation Outlook (which comes out after the CPI number this month) and the press of business-seeking activity, it has been difficult to put virtual pen to virtual paper.

Here is a great example. The New York Fed blog routinely gives me great material, both positive and negative. They’ve just published an article entitled “Inflation in the Great Recession and New Keynesian Models” with a followup article called “Why Didn’t Inflation Collapse in the Great Recession?” The pair of articles could just as easily be entitled, “When Your Model Doesn’t Work, Add a Parameter.”

I have said on a number of occasions that the credit crisis was a great test of the fundamental Keynesian hypothesis that inflation is caused by growth relative to potential output. And, in the event, that hypothesis was shown to be as bankrupt as Countrywide. I have always liked the way I summed up the state of the argument in 2012:

“The upshot is that we’ve just come off the biggest recession in 80 years, and inflation barely slowed. In fact, if you remove the effects of the bubble unwind in housing, it didn’t slow at all. If growth causes inflation, and if recessions are by definition deflationary, then we should have seen a decline in core prices.”

Here is the chart that accompanies that assertion:

gdpcoreinflation

Now, this doesn’t mean that the monetarists are right, but it assuredly means that the Keynesians are wrong. It is far too much, though, to ask for the peaceful surrender of this view. Instead, the Keynesians (or “New Keynesians” if you prefer) first recalibrated their models, like Goldman did in 2012. (Note, incidentally, that their re-calibrated model called for sharply declining core inflation starting from the moment they published that prediction, converging on 1.4% or so in 2013. In actuality, Median CPI basically went sideways from 2011 until recently. Core inflation declined, but only because of the one-off effect of the sequester, which I don’t imagine is what Goldman was forecasting).

What the NY Fed authors have done is to postulate that the real problem with New Keynesian models is that slack isn’t measured right, but rather that “the present value of expected future marginal costs is the more meaningful way of measuring slack.” It is a wonderful thing to be able to live in a world of models populated with unobservable variables that just happen to take on the right values to make the theory work. Even if, from time to time, one needs to re-calibrate when the model’s predictions don’t work out.

For the rest of us, the fact that monetarist models predicted that inflation would not plunge in the crisis, and have consistently given predictions wholly consistent with subsequent outcomes – without requiring re-parameterization – is a pretty strong argument that it’s likely to be closer to the right way to look at the world…even if it doesn’t give us as much to do.

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