- For the historical money market rates, I took the Fed Funds rate for December of each year and added 3 percentage points (300 basis points). We’ve seen that high yield savings and money market accounts generally pay 3 percentage points above the Fed Funds rate.
- I used the Dow Jones Industrial Average as my basis for stock returns.
- I couldn’t find a source for Dow Dividend payments for each year so I used 5% as the average since 1970.
- I took out 1.5% of Dow return as fees. The average actively managed mutual fund takes out 1.5%. In addition, up until the 1990s, it was quite expensive to buy and sell stocks.
- I ignored tax consequences. I realize that long-term capital gains tax rates on stocks and dividend tax rates may benefit stocks but didn’t model them here because their tax advantage is relatively recent. Both equities and deposit accounts can also accrue tax free in IRAs and 401K plans.
I then took two investors who each invested $100,000 and calculated how much their money would appreciate over the next 39 years based on the assumptions above. The first chart shows the difference, assuming today’s Dow closing price of 7837.

Which brings me to another interesting chart. In this one, I graphed the return comparison if the Dow goes back to 6,600, its low for this bear market – so far. I’ve done several analyses which show it has the potential to go lower, depending on how the economy responds.
See articles:
- Dow Jones Industrials Crash Analysis - Great Depression Versus Today,
- How Low Can It Go? Comparison of Dow Jones to Japan's Nikkei.

- Stocks will return more over long periods of time than ultra-safe savings and CDs, but not as much as I thought.
- It’s unlikely the Dow will go lower than 6,600 hundred due to the spread return between it and savings accounts.
- Buy-and-hold does not hold up as an investment strategy. Buy low, sell high is a much better strategy.
- Based on the ratio between savings rate and Dow returns, it looks like now is a low period (6600 was a very low period) and probably a good time to buy equities.
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