Global Brokerage (GLBR) 8-K Changes in Registrant's Certifying Accountant

  Ernst & Young LLP 5 Times Square New York, NY 10036-6530   Tel: +1 212 773 3000 Fax: +1 212 773 6350 ey.com Exhibit 16.1

September 8, 2017

Securities and Exchange Commission

100 F Street, N.E.

Washington, DC 20549

Ladies and Gentlemen:

We have read Item 4.01 of Form 8-K dated September 5, 2017, of Global Brokerage, Inc. and are in agreement with the statements contained in the second sentence of the first paragraph and the second, third and fourth paragraphs on page 2 therein. We have no basis to agree or disagree with other statements of the registrant contained therein.

/s/ Ernst & Young LLP