>>If the S&P falls by 10% (last 60 day high) I will move 25% of stocks to cash. Falls 20% I will move 50% to cash. I will buy again when it rises by 10% from last 60 day low and again when it rises by 20% from the low. <<
This is a form of market timing. These rules are an algorithm for what is referred to as mechanical timing.
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