There has been a lot of talk in the financial media lately about the notion that stocks may be in an “extended trading range” like that of the 1970s. What that means is the market remains essentially flat for an extended period, perhaps a couple of years or longer, while churning up and down within a wide price range. The case for this view is based on the belief in an extended period of very slow economic growth (or no growth) that results in very slow or no growth in corporate earnings.

One big question being asked now is “how long will this trading range environment last?” It is interesting to note that the market, as measured by the S&P500, has more than doubled since March 2009 bear market low. It has done this in three waves accompanied by some rather unnerving corrections. Yet, corrections are normal for the stock market.t

There are a number of reasons to believe the “extended trading range” scenario may be too pessimistic. First, we think there will be tremendous pressure on Congress and the president (whoever that is) to take action in 2013 to address the fiscal cliff issue and place the United States on a stronger footing financially. We also expect improved clarity on government policy, particularly with respect to health care. These actions would provide companies with more confidence in forward planning, which should improve the pace of hiring in the United States. Also, the current financial health of large U.S. companies is a factor working in the economy’s favor because of their ample resources available to accelerate investments and hiring under the right conditions.

Whatever your view on the extended trading range question, the strategy should not change from a financial planning perspective. We believe the current environment still calls for investing in diversified, balanced portfolios of high quality stocks and bonds, favoring equities now, and with adequate geographic diversification to capture faster growth of markets outside the United States.

We would also emphasize the importance of sticking with a sound financial plan. While markets will fluctuate, as they always do, sticking with a sound plan will: 1) keep you on track relative to your investments; 2) help keep you from the temptation of trying to time the market or make emotionally based decisions that can sink a plan and an investment portfolio; and 3) provide the peace of mind of knowing you have a road map that reduces guesswork, conjecture and flip-flopping on your investment strategy, all of which adds unnecessary stress to your life.

Bob Toomey is Vice President, Research, for S.R. Schill & Associates, an investment and financial planning firm located on Mercer Island.