1.  Bond Dealers of America: Letter from Mike Nicholas, Chief Executive Officer, dated March 4, 2016

2.  Breena LLC: E-mail from Geraldine Lettieri dated January 6, 2016

3.  National Securities Clearing Corporation: Letter from Murray C. Pozmanter, Managing Director, dated January 12, 2016

4.  Securities Industry and Financial Markets Association: Letter from Leslie M. Norwood, Managing Director and Associate General Counsel, dated March 6, 2016