The ( Not ) analysis is used to compare this to the overall market , in this example it is the FBMKLCI. Institutions do not want to make it very obvious for the average guy of what they are buying and so they want to get the best average price as possible so they slowly spread out their buys.
A good way to see this is to look for a divergence of some form. In this case price action is sideways while the is trending up.
We are currently at the middle of this sideways channel which is an ok price but it would be better to wait for the lower part of the channel for when the institutions get one last liquidity grab before it moves up. Bottom of this channel would be a great value buy for the overall move, but playing the breakout of this channel would also be a good play if you do not want to be stuck in sideways movement.