Here are the biggest wallets to start with:
http://bitcoinrichlist.com/top100
The Winkles own roughly 92.000 BTCs ("Their investment was worth $11 million in April at $120 per coin." Source: http://www.cnbc.com/id/101190181)
I saw a video where they stated, they still hadn't sold any coins, I'm pretty sure that video was from September 2013.
So which one(s) are they? Any additional hints?
Would be hard to track because Robert M. Faiella had them put all their bitcoins in Mt GOx for safe keeping.
"Robert, we're both new to this Bitcoin thingy, and..."
"Don't worry about a thing. I have two friends of which I work closely with on the board at The Bitcoin Foundation."
"Good enough for me!"
"Me, too, Skro!"
"Great! I brought along some NEFT to celebrate."
"Well, you boys ready to sign? We're losing money!"
"Shouldn't we have our lawyer look..."
"Already ahead of you! Patrick wrote it."
He he, nice story there!