Historical sector weights in S&P500

Great long term chart on the sector allocation of the S&P 500 found at Zerohedge. The latest data is here. It seems that once a sector deflates it does so for a long time and does not come back for a while. See energy in the late 70's and tech in the 90's. Will the same apply to financials?


This white paper from GMO on "Our Financial House of Cards" explains why the recent heavy weight of financials was most likely unsustainable.