https://www.sec.gov/rules/sro/cboebzx/2019/34-85896.pdf Variety of ETF's, Trusts, Futures in the pipeline. US SEC and other agencies seek and accept input from users. Responses are also published. III. Procedure: Request for Written Comments The Commission requests that interested persons provide written submissions of their views, data, and arguments with respect to the issues identified above, as well as any other Use the Commission's Internet comment form http://www.sec.gov/rules/sro.shtml Send an e-mail to rule-comments@sec.gov. Please include File Number SR-CboeBZX- 2019-004 on the subject line. Send paper comments in triplicate to Secretary, Securities and Exchange Commission, 100 F Street, NE, Washington, DC 20549-1090. Comments on the proposed rule change can be found at: https://www.sec.gov/comments/sr-cboebzx-2019-004/srcboebzx2019004.htm Interested persons are invited to submit written data, views, and arguments regarding whether the proposal should be approved or disapproved [by 20 days from today]. SECURITIES AND EXCHANGE COMMISSION (Release No. 34-85896; File No. SR-CboeBZX-2019-004) May 20, 2019 Self-Regulatory Organizations; Cboe BZX Exchange, Inc.; Order Instituting Proceedings to Determine Whether to Approve or Disapprove a Proposed Rule Change to List and Trade Shares of the VanEck SolidX Bitcoin Trust On January 30, 2019, Cboe BZX Exchange, Inc. ("BZX" or "Exchange") filed with the Securities and Exchange Commission ("Commission"), pursuant to Section 19(b)(1) of the Securities Exchange Act of 1934 ("Act")1 and Rule 19b-4 thereunder,2 a proposed rule change to list and trade shares of SolidX Bitcoin Shares ("Shares") issued by the VanEck SolidX Bitcoin Trust ("Trust") under BZX Rule 14.11(e)(4), Commodity-Based Trust Shares. The proposed rule change was published for comment in the Federal Register on February 20, 2019.3