Update 2013:
The Case-Shiller index continued to climb in April 2013; it became clear that this year the "Sell in May" effect is weaker than usually. Solid job figures, especially in services, followed the move of house prices.
The "Sell in May, Come Back in October" Effect
It is the same seasonal anomaly nearly every year: The statistically flawed (see here and here) Non-Farm Payrolls (NFP) report delivers some good winter readings with 150K or 200K new jobs, these years additionally fueled by a weather effect in 2011/2012  and in 2012/2013; biased data that let policy makers to doubt Okun's law. Consequently the stock markets rallied strongly. Decision makers especially of firms in the U.S. and in English-speaking countries get influenced by the NFP coincident indicator and the corresponding Purchasing Manager Indices (PMIs), usually the leading indicators, that increase. [caption id="attachment_2663" align="alignright" width="300"]

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Source NY Fed and Soberlook |
 "US house prices seem to be higher – in seasonal terms – in the second and thirdquarter than in the fourth and first quarter of a year. source: Bundesbank study
Reasons for the Sell in May Effect
Studies indicated that the Sell in May Effect is a global phenomenon, and argued that the summer slump may at least partially be driven by a long-standing coordination game.
Our research found out that German, Chinese and Japanese investments are highly export-dependent and tend to increase in Q1 and Q2. This happens in particular after troughs, when US spending has restarted in Q4.
In recent years, stronger Chinese investments let oil and gas prices strongly increase in February (see seasonality of oil prices). This Chinese strength, however did not happen in 2013. One reason for the Chinese weakness was the strong competition caused by the strengthening of Japanese exporters with the weak yen. This might to shift parts of the supply chains of Japanese multi-nationals back to Japan. The second reason was restrictions on the buying of a second home in China.
One important reason is probably the savings rate that traditionally is higher in Q2 than Q1, but also than in Q3. Eurostat reports that the Not Seasonally Adjusted Savings Rate in the euro zone is between 16 and 18% in Q2 but around 12% in Q1. This, however, is not valid for China, Japan or Australia that have other traditions or seasons.
Read about the equivalent for the Swiss National Bank, the "Get Stress in May and Relax in October Effect".
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Tags: Euro crisis,Labor costs,Non-Farm,Okun's Law,PMI,QE3,Quantitative Easing,Safe-haven,seasonal,U.S. ISM Manufacturing PMI,U.S. Nonfarm Payrolls
3 comments
TolerantLiberty
2014-09-05 at 09:28 (UTC 2) Link to this comment
test
TolerantLiberty
2014-09-05 at 09:28 (UTC 2) Link to this comment
Let’s have a closer look at the supply side:
There are some slight effects from U.S. shale oil industry and – yes, the Fed’s
years-long dollar bashing has had nice effect: With the weak dollar, American
labor is relatively cheap on a global scale – or better it was. On the other
side American companies benefited from the dollar’s reserve currency status and
less problems obtaining credit. Still, many prefered to invest abroad, seek
cheap labor and suppliers abroad and to globalize their supply chains. While in
the U.S. those were mostly the bigger companies in the S&P 500, in Germany
or Switzerland even the medium enterprises followed that strategy.
or Switzerland even the medium enterprises followed that strategy.
Logically
the S&P500 clearly outperformed smaller U.S. companies; the small business
confidence is far under the values seen before the crisis.
http://www.advisorperspectives.com/dshort/updates/NFIB-Small-Business-Optimism-Index.php
TolerantLiberty
2014-09-05 at 09:48 (UTC 2) Link to this comment
On
the demand side, however, we see the following
1) Incited by high interest rates – EM prefer to save and not to spend, while austerity
and the desire to save on your own for the soon coming retirement age instead
of relying on perceived “near-bankrupt governments” depressed
investments in these countries and consequently oil and commodity prices.
2) Due to lower taxes and higher distances , gasoline
takes a significantly higher part in the US basket than in European spending.
Lower gas prices, however, help to spend on things that are no so essential,
like for example the typical American car that – as opposed – to European ones still
needs more fuel.