Well, it depends on what those institutions does with their bitcoins. A while back we had auctions for recovered stolen coins and everyone was speculating as to what would happen, if those large amounts of coins, would enter the market again. Now we know that the coins went to a owner that hoarded the coins and the price stayed stable.
If the owner decided to sell all of those coins at the same time, the price would have taken a nose dive..because a sudden injection of large amounts of coins into the supply side.. would send the markets into a frenzy. (The speculators will see this as a dump and it will cause a trigger affect of other people selling their coins)
The same goes for these institutional buyer.... if one of them dump Billions of Dollars worth of coins onto exchanges... then the price will come crashing down. (causing a lot of volatility)
Yes, this is what I was thinking along the lines of.
Essentially, big institutional players are simply less likely to manipulate the market than whales, if only because of regulatory oversight.
Also, thank you for taking the time to read the OP properly and understanding that this thread is actually about which is
potential decreasing volatility caused by institutional buy-in as has been proposed quite often by the media recently.