Twiggs Money Flow is my own derivation, based on the popular Chaikin Money Flow indicator, which is in turn derived from the Accumulation Distribution line. We are all indebted to Marc Chaikin and Larry Williams for the contribution they have made to the field of technical analysis and price-volume oscillators. for more information visite: http://www.incrediblecharts.com/indicators/twiggs_money_flow.php