UNITED STATES
Securities and Exchange Commission
Washington, D. C. 20549
Schedule 13G
Under the Securities Exchange Act of 1934
(Amendment No. _ )
MATRIX SERVICE COMPANY
Common Stock
CUSIP Number 576853105
Date of Event Which Requires Filing of this Statement: December 31, 2012
Check the appropriate box to designate the rule pursuant to which this Schedule
is filed:
[ ] Rule 13d-1(b)
[ x ] Rule 13d-1(c)
[ ] Rule 13d-1(d)
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1) Name of reporting person:
Cambridge Advisors
(the "Investment Manager")
A Business Unit of CI Global Investments Inc.
2 Queen Street East, Twentieth Floor
Toronto, Ontario, M5C 3G7
2) Check the appropriate box if a member of a group:
a) x
b) n/a
3) SEC use only
4) Place of organization:
Toronto, Ontario, Canada
Number of shares beneficially owned by each reporting person with:
5) Sole voting power: 1,604,095
6) Shared voting power: - 0 -
7) Sole dispositive power: 1,604,095
8) Shared dispositive power: - 0 -
9) Aggregate amount beneficially owned by each reporting person:
1,604,095
10) Check if the aggregate amount in row (9) excludes certain shares:
n/a
11) Percent of class represented by amount in row (9):
5.75%
12) Type of reporting person:
IA, CO
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Item 1a) Name of issuer:
Matrix Service Company
Item 1b) Address of issuer's principal executive offices:
5100 E Skelly Dr., Suite 700
Tulsa, OK 74135
United States
Item 2a) Name of person filing:
Cambridge Advisors
(the "Investment Manager")
A Business Unit of CI Global Investments Inc.
Item 2b) Address of principal business office:
CI Investments Inc.
2 Queen Street East
Twentieth Floor
Toronto, On
M5C 3G7
Canada
Item 2c) Citizenship:
Ontario, Canada corporation
Item 2d) Title of class of securities:
Common Stock
Item 2e) CUSIP No. 576853105
Item 3) If this statement is filed pursuant to Rule 13d-1(b), or
13d-2(b), check whether the person filing is a :
(a)[ ] Broker or dealer under Section 15 of the Act.
(b)[ ] Bank as defined in Section 3(a)(6) of the Act.
(c)[ ] Insurance Company as defined in Section 3(a)(6) of the Act.
(d)[ ] Investment Company registered under Section 8 of the
Investment Company Act.
(e)[ ] Investment Adviser registered under Section 203 of the
Investment Advisers Act of 1940.
(f)[ ] Employee Benefit Plan, Pension Fund which is subject to
ERISA of 1974 or Endowment Funds; see 240.13d-1(b)(ii)(F).
(g)[ ] Parent holding company, in accordance with 240.13d-1(b)(ii)(G)
(h) [ ] Group, in accordance with 240.13d-1(b)(1)(ii)(J).
Item 4) Ownership:
(a) Amount beneficially owned: 1,604,095
(b) Percent of Class: 5.75%
(c) Number of shares as to which such person has:
(i) sole power to vote or to direct the vote:
1,604,095
(ii) shared power to vote or to direct the vote:
- 0 -
(iii) sole power to dispose or to direct the disposition of:
1,604,095
(iv) shared power to dispose or to direct the disposition of:
- 0 -
Item 5) Ownership of Five Percent or less of a class:
n/a
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:
Cambridge Advisors
(the "Investment Manager")
A Business Unit of CI Global Investments Inc.
Item 9) Notice of dissolution of group:
n/a
Item 10) Certification:
By signing below I certify that, to the best of my knowledge
and belief, the securities referred to above were acquired and
are held 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.
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 January 22, 2013
CI Global Investments Inc.
On behalf of the Investment Manager
By___________________________________________
Janet Gillies
Chief Compliance Officer