AAVVF Advantage Energy Ltd (PK)

CUSIP No. 00765F101     Schedule 13G    Page 2 of 5

1.      Name of Reporting Persons.
        I.R.S. Identification Nos. of above persons (entities only).

        Mackenzie Financial Corporation

2.      Check the Appropriate Box if a Member of a Group        (a) [ ]
                                                                (b) [x]
3.      SEC Use Only

4.      Citizenship or Place of Organization

        Toronto, Ontario, Canada

Number of Shares Beneficially Owned by Each Reporting Person With:

5.      Sole Voting Power

        29,807,685

6.      Shared Voting Power

        NIL

7.      Sole Dispositive Power

        29,807,685

8.      Shared Dispositive Power

        NIL

9.      Aggregate Amount Beneficially Owned by Each Reporting Person

        29,807,685

10.     Check if the Aggregate Amount in Row (11) Excludes Certain Shares

        N/A

11.     Percent of Class Represented by Amount in Row (9)

        16.03%

12.     Type of Reporting Person (See Instructions)

        IA





Item 1. Schedule 13G    Page 3 of 5

       (a)      Name of Issuer

             Advantage Oil & Gas Ltd.


       (b)      Address of Issuer's Principal Executive Offices

                440 2 Avenue SW
                Millennium Tower, Suite 300
                Calgary, AB T2P 5E9
                Canada


       (a)      Name of Person Filing

             Mackenzie Financial Corporation

       (b)      Address of Principal Business Office or, if none, Residence

             180 Queen Street West, Toronto, Ontario M5V 3K1

       (c)      Citizenship

             Organized in Toronto, Ontario, Canada

       (d)      Title of Class of Securities

             Common Stock

       (e)      CUSIP Number

             00765F101


Item 3.  If this statement is filed pursuant to 240.13d-1(b) or
240.13d-2(b), or (c) check whether the person filing is a(n):

(a)     [ ]     Broker or dealer registered under section 15 of the
 Act (15 U.S.C.78o).
       (b)      [ ]     Bank as defined in section 3(a)(6) of the Act
 (15 U.S.C. 78c).
(c)     [ ]     Insurance Company as defined in section 3(a)(19) of the
Act (15 U.S.C.78c).
(d)     [ ]     Investment Company registered under section 8 of the
Investment Company Act of 1940 (15 U.S.C. 80a-8).
       (e)      [X]     investment adviser in accordance with
 240.13d-1(b)(1)(ii)(E);
(f)     [ ]     employee benefit plan or endowment fund in accordance with
240.13d-1(b)(1)(ii)(F);
(g)     [ ]     parent holding company or control person in accordance with
 240.13d-1(b)(1)(ii)(G);
(h)     [ ]     savings associations as defined in Section 3(b) of the
 Federal Deposit Insurance Act (12 U.S.C. 1813);













        Schedule 13G    Page 4 of 5

(i)     [ ]     church plan that is excluded from the definition of
an investment company under section 3(c)(14) of the Investment Company
Act of 1940 (15 U.S.C. 80a-3);
(j)     [ ]     Group, in accordance with 240.13d-1(b)(1)(ii)(J).


Item 4. Ownership

Provide the following information regarding the aggregate number and
percentage of the class of securities of the issuer identified in Item 1.

       (a)      Amount beneficially owned: 29,807,685

       (b)      Percent of Class: 16.03%

       (c)      Number of shares as to which such person has:

           (i) Sole power to vote or to direct the vote - 29,807,685

           (ii) Shared power to vote or to direct the vote -  NIL

(iii) Sole power to dispose or to direct the disposition of - 29,807,685

(iv) Shared power to dispose or to direct the disposition of -  NIL


Item 5. Ownership of Five Percent or Less of a Class

       If this statement is being filed to report the fact that as of
 the date hereof the reporting person has ceased to be the beneficial
owner of more than five percent of the class of securities, check the
following [].


Item 6. Ownership of More than Five Percent on Behalf of Another Person

       N/A

Item 7. Identification and Classification of the Subsidiary Which
 Acquired the Security Being Reported on By the Parent Holding Company

       N/A

Item 8. Identification and Classification of Members of the Group

       N/A

Item 9. Notice of Dissolution of Group

       N/A










        Schedule 13G    Page 5 of 5

Item 10.        Certification

(a)     The following certification shall be included if the statement
 is filed pursuant to 240.13d-1(b):

By signing below I certify that, to the best of my knowledge and belief,
 the securities referred to above were acquired in the ordinary course
of business and were not acquired and are not held for the purpose of
or with the effect of changing or influencing the control of the issuer
of the securities and were not acquired and are not held in connection
with or as a participant in any transaction having that purpose or effect.

(b)     The following certification shall be included if the statement is
 filed pursuant to 240.13d-1(c):

By signing below I certify that, to the best of my knowledge and belief,
 the securities referred to above were not acquired and are not held for
the purpose of or with the effect of changing or influencing the control
of the issuer of the securities and were not acquired and are not held
in connection with or as a participant in any transaction having that
purpose or effect.


SIGNATURE

       After reasonable inquiry and to the best of my knowledge and
belief, I certify that the information set forth in this statement
is true, complete and correct.



Date    March 8, 2019


        "Gillian Seidler"


        Signature
        Gillian Seidler
        Vice-President & Chief Compliance Officer

        Name/Title



       The original statement shall be signed by each person on whose behalf
the statement is filed or his authorized representative.
If the statement is signed on behalf of a person by his authorized
representative other than an executive officer or general partner of
the filing person, evidence of the representative's authority to sign
on behalf of such person shall be filed with the statement, provided,
however, that a power of attorney for this purpose which is already on
file with the Commission may be incorporated by reference.
The name and any title of each person who signs the statement shall be
typed or printed beneath his signature.