As you know, we strongly espouse the analysis of ‘liquidity’ into one’s asset allocation modelling. This is a fairly unique approach of our software. At a recent presentation in London, Mark Carney (current governor of Bank of Canada) gave some remarks on liquidity. As a brief bio, he is a former Harvard student, former Goldman banker and currently ranked by the Financial Times as a ‘top figure in the financial world’.
His wiki entry: http://en.wikipedia.org/wiki/Mark_Carney
Global liquidity is an amorphous concept. The Usual Suspect for any event or dynamic too complicated to explain, global liquidity is the Keyser Söze of international finance. It has no agreed definition and, as a consequence, there has been no coherent policy approach to tame its more violent tendencies.
However here we have a quote which clearly emphasizes why smart money should continue to focus on liquidity’s impact on portfolio construction:
With increasing financial integration, the impact of global liquidity on domestic financial and economic conditions is growing.3 The recent Irish experience demonstrates how it can amplify the cyclical dynamics of domestic credit and asset prices.
The link to the full talk is: http://www.bankofcanada.ca/2011/11/speeches/global-liquidity/

