Bunch of Northeast (Scarrit Point) Multi goes Pending Same Day

I'd been watching a few multi-family properties in the Scarritt Renaisance area and they all seemed to be priced "above the market" and had sat there a while... then today I got a notification via Trulia that 7 went to pending just today?!?! Someone vacuuming up multi in that area... they seemed overprices thus their time on market but they all seemingly just moved at once today? Anyone aware of big institutional buying in the are or investment fund activity there? Just curious... out of my grasp for much of them as I'm a smaller fish but found it interesting.