On November 18, 2015, the Basel Committee on Banking Supervision published an interim impact analysis of its fundamental review of the trading book. The analysis used data from 44 banks and assesses the impact of the revisions proposed in previous consultations carried out in 2013 and 2014. The analysis found, amongst other things, that:

(i) change in market risk capital charges would produce an increase of 4.7% in the overall Basel III minimum capital requirement; (ii) that such change leads to a 2.3% increase when the bank with the largest value of market risk-weighted assets is excluded from the sample; and (iii) in comparison with the current market risk framework, the standard proposed would result in a weighted average increase of 74% in aggregate market risk capital. The Basel Committee expects to finalize the review before the end of 2015.

The analysis is available at: http://www.bis.org/bcbs/publ/d346.pdf