Value Averaging Experiments
I’ve been quite critical of the investing strategy called value averaging (VA) . I’ve explained the reasons why it doesn’t work, and why the methods used by its proponents to measure its returns are flawed. One reader, Lost Cowboy, challenged me to dig deeper, and I’ve done that with some experiments. In short, value averaging is a strategy where you choose some target investment return and buy or sell as necessary to keep your dollar-value in equities rising by this target percentage. If equities rise on their own by more than this target, then you sell some, and if they rise by less than the target, then you buy some. The theory is that this will force you to buy low and sell high. In practice, this strategy demands that you invest cash when you don’t necessarily have it available. Solutions to this problem severely undermine returns. I dug up some historical U.S. S&P 500 stock returns, short-term interest rates, and inflation rates from Robert Shiller’s online data . ...