More on central bank purchases of stocks: It's a quest for yield as a survey shows 23% saying they own shares or plan to buy them. The SNB - furiously buying up euros for the last 2 years - has taken the money and boosted its equity holdings to about 12% of reserves. The BOJ plans to double its holdings of equity ETFs to $35.2B. Not participating (yet) are the Fed and BOE - neither with a mandate to own shares directly.