blackrock strategy to increase holdings?!?

Hi All,
Never posted before on Hotcopper. Thought I might get myself involved after sitting on the side lines for a couple of years by mentioning the following post on another thread in which I have an interest. I thought it interesting, in as much as there is a claim by the poster that the latest FMG release suggests Blackrock heavily invested in FMG when the price was low understanding that this would bounce back quickly . What they did then was lend shares to shorters , buy , sell , hold and do everything possible to increase there investment by manipulating the price.
"This will give some an understanding of our current share price and what our so called investors do with shares in between buying and selling them."
Make your own conclusions about the validity of this post, they're not my words. I've only just read this particular post, and I thought it might just be interesting enough to mention as it was news to me.
Best of luck to all with your investing.
Regards dmdaly