I would like to get the formula for the IBD Acc/Dist Term. The only information so far is from the IBD University, IBD Key Term: „Accumulation/Distribution (Acc/DisTM) Rating Exclusive rating in Investor's Business Daily. One of the IBD SmartSelect® Corporate Ratings, it tracks the relative degree of institutional buying (accumulation) and selling (distribution) in a particular stock over the last 13 weeks. Updated daily, stocks are rated on an A+ to E scale. A = Heavy buying B = Moderate buying C = Equal amount of buying and selling D = Moderate selling E = Heavy selling The rating is enhanced by "+" and "-" signs to show additional detail on institutional activity; a "B+" indicates greater accumulation than a "B" rating, whereas a "B-" indicates less accumulation than a "B" rating, and so on. „