Ledenfrog,,there is no doubt a certain percentage of manipulation during stock accumulation takes place but if RVX say is anticipated to hit double digits over the coming 12 months I would be buying up shares from here straight up,,it not only gets you shares but it also adds momentum and interest in the stock. You then support the level with block bids when you get to the max price you are willing to pay. Most accumulation I see is the continual above averge size bid lots following the price ascention. As the stock rises the loose hands sell into the momentum,,it also takes the pressure of those shares previously held by the sellers and now owned by the new holder/s who are not selling at the higher high. The float is also possibly diminished for the short term. If as you say you get short sellers in the midst at the first sign of resisitance and the accumulation carries through you get the short surge effect as well. I would welcome such activity,,,,, :o) ,,,,news has to come first however,,,,so lets get it on!!