When you accumulate things or when they accumulate, they collect or are gathered over a period of time. Households accumulate wealth across a broad spectrum of assets Lead can accumulate in the body until toxic levels are reached. = build up
Broker/analyst recommendation that could mean slightly different things depending on the broker/analyst In general, it means to increase the number of shares of a particular security over the near term, but not to liquidate other parts of the portfolio to buy a security that might skyrocket A buy recommendation, but not an urgent buy
collect or gather; "Journals are accumulating in my office"; "The work keeps piling up"
get or gather together; "I am accumulating evidence for the man's unfaithfulness to his wife"; "She is amassing a lot of data for her thesis"; "She rolled up a small fortune"