Of course it is...its has been and is being totally propped up by the Fed monetizing debt with equity purchasing ie QEI, II, III with QEIV being considered soon[1].

This is nothing but an asset bubble that is sure to burst someday, as is akin to what the Gov't, the credit agencies, and WS did with housing and mortgages back in the 2000's that led to the meltdown and TARP.

[1]http://www.safehaven.com/article/39140/jobs-report-moves-fed...