You do seem to have an idea how the div adjustments work. I have always been confused on that. Obviuosly, I see the downward pressure on a stock on Ex-div day (and a little before), but in order for the price to actally drop, people have to be willing to sell qt that lowered price. If there are market orders, I can see them filled at the lowered (prev. price - Div), assuming that there will be buyers at that price. Limit orders above that would not get filled. Assuming that people knew this, I would think that they would set a lmit in the middle, knowing the downward pressure, but still to get something better (than previous price - Div), at that level there is no point in getting the div (and it would generally be taxed). If more people used limit orders (on selling) then I don't think the drop would be as great. I just don't see how they can "Set" the price to be lower, or why they should. By the way I almost never use market orders anymore, unless I really want a stock.
I have thought that maybe selling half after the majority of the run up but before the drop would lock in 1/2 profits. Then on Ex div day, wait to see if the drop is more or less than the div. If more then buy the 1/2 back, if less then either just hold on or sell the rest. If you end up with extra $ then put it back into another Reit that has dropped more than the div. Just an idea I am playing with, cause I never know f it would be good to sell when the price is nice and high (and may drop more than the div). Just some ?'s and comments