Quote from gunslinger:
Window dressing has nothing to do with manipulating a stock up or down. Mutual funds are just kicking out there dogs and buying better performing stocks at the end of the quarter just so it looks better to the client.
You need to brush up on your knowledge how the markets work.
Window dressing is when mutual funds start buying stocks that they have large positions in for the sole purpose of giving it a higher closing price at the end of the month, hence reporting good returns. The trick is that it is done on lower volume and the shares bought is relatively insignificant to the full positions. No possible way that fund could liquidate its positions at the inflated price hence the name "Window Dressing".
Similiar to what I-Banks do when they get large allotments of IPOs. After the first few days as the volume dies down, they start running up the price on low volume, then release their upgrades and dump their positions onto the funds (mom & pop moneys). Gotta love it.