Ownership Submission
FORM 4
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Expires: January 31, 2005
Estimated average burden hours per response... 0.5

(Print or Type Responses)
1. Name and Address of Reporting Person *
Mitchell Christopher
   2. Issuer Name and Ticker or Trading Symbol
Cboe Global Markets, Inc. [CBOE] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
_____ Officer (give title below) _____ Other (specify below)
(Last)
(First)
(Middle)
C/O SPECTRUM EQUITY, ONE INTERNATIONAL PLACE		 3. Date of Earliest Transaction (Month/Day/Year)
11/28/2017
(Street)

BOSTON, MA 02110		 4. If Amendment, Date Original Filed(Month/Day/Year)
 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1.Title of Security
(Instr. 3)		 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code
(Instr. 8)		 4. Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4 and 5)		 5. Amount of Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 3 and 4)		 6. Ownership Form: Direct (D) or Indirect (I)
(Instr. 4)		 7. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 11/28/2017   J(1)   239,300 D (1) 0 I See Footnotes (1) (2)
Common Stock 11/28/2017   J(3)   7,353 A (3) 8,808 D  
Common Stock 11/29/2017   S   670 D $ 120.8878 0 I See Footnotes (4) (5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB control number. SEC 1474 (9-02)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 3)		 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code
(Instr. 8)		 5. Number of Derivative Securities Acquired (A) or Disposed of (D)
(Instr. 3, 4, and 5)		 6. Date Exercisable and Expiration Date
(Month/Day/Year)		 7. Title and Amount of Underlying Securities
(Instr. 3 and 4)		 8. Price of Derivative Security
(Instr. 5)		 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s)
(Instr. 4)		 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 4)		 11. Nature of Indirect Beneficial Ownership
(Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
Mitchell Christopher
C/O SPECTRUM EQUITY
ONE INTERNATIONAL PLACE
BOSTON, MA 02110		   X      

Signatures

 /s/ Christopher T. Mitchell   11/30/2017
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 4(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Prior to the reported transaction, Spectrum Equity Investors VI, L.P. ("SEI VI") was the holder of record of 239,300 shares. On November 28, 2017, SEI VI distributed 239,300 shares of the Issuer's Common Stock on a pro rata basis to its partners for no consideration. Following the distribution, SEI VI was no longer a holder of record of the Issuer's shares.
(2) The general partner of SEI VI is Spectrum Equity Associates VI, L.P., the general partner of which is SEA VI Management, LLC ("SEA VI LLC"). As a member and manager of SEA VI LLC, the Reporting Person may be deemed to share the voting and dispositive power over securities beneficially owned by SEA VI LLC. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.
(3) The Reporting Person acquired shares of the Issuer's Common Stock in connection with the above referenced distribution by SEI VI on a pro rata basis to its partners for no consideration. The distribution resulted in a change in form of beneficial ownership of shares previously reported.
(4) Prior to the reported transaction, Spectrum VI Co-Investment Fund, L.P. ("Co-Investment Fund") was the holder of record of 91 shares and Spectrum VI Investment Managers' Fund, L.P. ("IMF") was the holder of record of 579 shares.
(5) The general partner of Co-Investment Fund and IMF is SEA VI LLC. As a member and manager of SEA VI LLC, the Reporting Person may be deemed to share the voting and dispositive power over securities beneficially owned by SEA VI LLC. The Reporting Person disclaims beneficial ownership of the reported securities except to the extent of his pecuniary interest therein.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.

Potential persons who are to respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB number.