These levels are calculated in weekly (W), monthly (M), quarterly (Q), semiannual (S) and annual (A) time horizons, based on the past nine closes in each time horizon.

FORBES: Buy and Trade Beats Buy and Hold

Annual (A), Semiannual (S), Quarterly (Q), Monthly (M) and Weekly (W).

FORBES: It's Time To Sell Strength To Risky Levels