Another example is the countercyclical capital buffer introduced as part of the Basel III reform of bank capital requirements. (bankofcanada.ca)
Most of these were issued by banks and REITs... Of those that remain, I have been advised by my brokerage that pending changes to bank capital requirements under Dodd - Frank will allow banks the right to redeem them anytime at par regardless of call date. (aaii.com)
Referring to the completion of work on the Basel III bank capital standards, US Treasury Secretary Steven Mnuchin noted that «the reforms standardize the approach, improve the quality and consistency of bank capital requirements, and will help level the playing field for US firms and businesses operating internationally.» (gfmag.com)