Investments: Episode 45
It's Movember Day 19 and the Mo is ready for manscaping.
Please stop by my Movember page and donate what you can.
Now that the mustache has spoken it's on to the show...
Are we on the eve of a MASSIVE bull market?
The law of large numbers ia about as difficult to escape as gravity. Eventually everything reverts to the mean. This can be a positive thing or a negative thing depending how you look at it. Just as markets can't go up forever they can't stay down forever either.
As an asset class stocks, as represented by the S&P 500, have returned an average of 8.4% per year since 1950. However, if we exclude the years 2000 - 2010 stocks have actually had a historic average annual return of 10.2%. Yet, over the last 10 years the S&P 500 has had a negative 0.48% average annual return. This is just way out whack for the asset class.
The Worst Decade on Record
If we look at the 611 ten year periods (comparing January 1950 to January 1960 and so on) between 1950 and November 1, 2010 we see the worst 10 year period on record happened between Feb 1999 and Feb 2009 when the S&P lost 40.6% of its value. This is nearly twice as bad as the previous worst decade which occurred between Sep 1964 and Sep 1974 when the S&P lost 24.5% of its value.
A Typical Decade
Historically the S&P 500 has increased in value by 120.2% per decade (123.7% if we exclude 2000 - 2010). This means that an investor in the S&P 500 should expect to see his money double every eight or nine years or so.
The Best Decades on Record
Remember the stock market crash of 1987? Well the decade that followed beginning in Dec 1988 and ending in Dec 1998 the S&P grew by 342.6%! You may also remember we had the savings and loan scandal in that period as well as the first gulf war. And if we look at Aug 1990 to Aug 2000 we see even more astounding growth at 370.5%.
Reverting to the Mean
Things average out. The S&P 500 and other stock indexes are upwardly biased. Notice that the extreme markets on the upside were much more extreme than the downside markets.
From the examples above we know that the market can go on decade long bear runs and huge decade long bull runs with an average run that produces 123% returns.
To get back to this average stocks will need to produce an annual return of 22.6% for the next ten years. Will they do it? History suggests they will. At least at some point they will.