I was reviewing his post history just now (I hadn't heard about him till today), and he made a comment about doubling his BTC holdings from 8k to 16k during the April 2013 growth spurt and crash.  Perhaps he did it again between the November peak and now.  There's numerous comments where he claims to have placed big walls for the purpose of manipulation, or bought his own walls (it only costs "0.6%," he's said a few times).  His comments seem prescient, vaguely alluding to both of the 2013 growth spurts shortly before they occurred, moving his coins out of Gox in spring 2013, criticizing ButterflyLabs in 2012, and a few other interesting details.  He seems very enthusiastic about BTC and in several comments strongly opposes "cashing out into fiat," suggesting that bitcoins are to be held or traded for something one needs or wants.  Using his words, he seems to enjoy "slaughtering pigs."

Cypher, do you know much about Nemesis?