POWER OF ATTORNEY

       	Know all by these presents, that the undersigned hereby constitutes and
appoints Edward S.
Knight, Executive Vice President and General Counsel of Nasdaq, Inc. (the
"Company"), the undersigned's
true and lawful attorney-in-fact to:

(1)	prepare, execute in the undersigned's name and on the undersigned's behalf,
and submit to the
U.S. Securities and Exchange Commission (the "SEC") a Form ID, including
amendments thereto,
and any other documents necessary or appropriate to obtain codes and passwords
enabling the
undersigned to make electronic filings with the SEC of reports required by
Section 16(a) of the
Securities Exchange Act of 1934 or any rule or regulation of the SEC;

(2)	execute for and on behalf of the undersigned, in the undersigned's capacity
as an officer and/or
director of the Company, Forms 3, 4, and 5 in accordance with Section 16(a) of
the Securities
Exchange Act of 1934 and the rules thereunder;

(3)	do and perform any and all acts for and on behalf of the undersigned which
may be necessary or
desirable to complete and execute any such Form 3, 4, or 5, complete and execute
any amendment
or amendments thereto, and timely file such form with the SEC and any stock
exchange or similar
authority; and

(4)	take any other action of any type whatsoever in connection with the
foregoing which, in the opinion
of such attorney-in-fact, may be of benefit to, in the best interest of, or
legally required by, the
undersigned, it being understood that the documents executed by such
attorney-in-fact on behalf of
the undersigned pursuant to this Power of Attorney shall be in such form and
shall contain such
terms and conditions as such attorney-in-fact may approve in such
attorney-in-fact's discretion.

       	The undersigned hereby grants to such attorney-in-fact full power and
authority to do and perform
any and every act and thing whatsoever requisite, necessary, or proper to be
done in the exercise of any of
the rights and powers herein granted, as fully to all intents and purposes as
the undersigned might or could
do if personally present, with full power of substitution or revocation, hereby
ratifying and confirming all that
such attorney-in-fact, or such attorney-in-fact's substitute or substitutes,
shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein
granted.  The undersigned
acknowledges that the foregoing attorney-in-fact, in serving in such capacity at
the request of the
undersigned, is not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to
comply with Section 16 of the Securities Exchange Act of 1934.

       	This Power of Attorney shall remain in full force and effect until the
undersigned is no longer
required to file Forms 3, 4, and 5 with respect to the undersigned's holdings of
and transactions in securities
issued by the Company, unless earlier revoked by the undersigned in a signed
writing delivered to the
foregoing attorney-in-fact.

       	IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of
this 7th day of May, 2017.


/s/ Melissa Arnoldi_______________________
Signature


Melissa Arnoldi _________________________
Print Name