(This report was posted on August 5, 2010)

HISTORICAL  STOCK  PRICES  AND  TRENDS

Robert O. Welk          RowTek Economics

Trends of stock prices reveal valuable insights into the fundamentals that are determining them.  When prices proceed along a line, with only minor variations from that line, they reflect expected earnings and appreciation for the equities, supply and demand for equities, and the level of confidence of investors.  The establishment of a trend takes several years.  Any wide variation from the trend means that some of the fundamentals have changed.  Such a movement should alert the observer to examine carefully why the deviation has occurred.

The time axis for the following chart allows for 20 years of monthly average prices of S&P 500 daily closings.  There are two different trends shown on the chart.  The long term trend shown for the width of the chart is based on the interval 1978-1996.  (The trend is shown projected ahead for the years 1997-2007.)  Those trend years, yielding the 11.3% annual increase were optimum for the economy.  They included the Reagan tax cuts, end of the cold war, personal computer growth, birth of the internet, and all the spin-off businesses.
Stock Price Trends
The chart shows clearly the bubble in stock prices which developed in the late 1990's, and the subsequent collapse.  The monthly peak in stock prices, as measured by the S&P 500, was August 2000 (1485.46).  Prices then declined irregularly for the next 30 months, to 837.62 in February 2003. The decline from the peak was 44%.

From the low in February 2003, stock prices increased rapidly through December '03 by 29% to 1080.64.  After that, prices gained more slowly and  established a new trend, well below the previous long-term trend.   A trend fit to the months January 2004 through September 2007 has a slope of 9.2%.  Prices were relatively close to that new trend line through fall '07.

By January '08 it was obvious that prices were deviating away from that trend to the downside when they had fallen 10% below  the trend.  By late spring it appeared that a "bear market" was underway, well before the collapse in the financial markets which occurred in September '08.  In July '10 the monthly average (1079.8) was 30% below the recent October '07 high (1539.66) and 43% below the 9.2% trend.

I am beginning to believe that average stock prices will not return to even the lower trend for at least 10 years.  The unique and lasting problems raised by the '08 financial collapse, the ease of transmission of problems globally, and the absence of transforming innovation like that of the 80's (mentioned above) will weigh heavily on the economy and stock prices. 

The stock market has stagnated before.  July 2010 was at the level that was first reached in March/April 1998, 12 years and 3 months ago.  Investment advice to "buy and hold" is history!

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