*The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

CUSIP No. 826516106				13G	Page 2 of 6 Pages
1	NAMES OF REPORTING PERSONS I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY) Acuity Investment Management Inc.
2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*				(a) o (b) o
3	SEC USE ONLY
4	CITIZENSHIP OR PLACE OF ORGANIZATION Province of Ontario, Canada
NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH		5	SOLE VOTING POWER 1,551,300
		6	SHARED VOTING POWER 293,500
		7	SOLE DISPOSITIVE POWER 1,844,800
		8	SHARED DISPOSITIVE POWER 0
9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON 1,844,800
10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES ¨
11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9 5.89%
12	TYPE OF REPORTING PERSON IA

Item 1(a).	Name of Issuer:
	Sierra Wireless, Inc.

Item 1(b).	Address of Issuer’s Principal Executive Offices:
	13811 Wireless Way Richmond, British Columbia Canada, V6V 3A4
Item 2(a).	Name of Persons Filing:
	Acuity Investment Management Inc.
Item 2(b).	Address of Principal Business Office, or if None, Residence:
	40 King Street West Scotia Plaza, 56th Floor Toronto, ON M5H 3Y2 Canada
Item 2(c).	Citizenship:
	Canadian
Item 2(d).	Title of Class of Securities:
	Common Shares
Item 2(e).	CUSIP Number:
	826516106

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:
	(a)	o	Broker or dealer registered under Section 15 of the Exchange Act (15 U.S.C. 78o).
	(b)	o	Bank as defined in Section 3(a)(6) of the Act (15 U.S.C. 78c).
	(c)	o	Insurance company as defined in Section 3(a)(19) of the Exchange Act (15 U.S.C. 78c).
	(d)	o	Investment company registered under Section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8).
	(e)	x	An investment adviser in accordance with 240.13d-1(b)(1)(ii)(E);
	(f)	o	An employee benefit plan or endowment fund in accordance with 240.13d-1(b)(1)(ii)(F);

		(g)	o	A parent holding company or control person in accordance with 240.13d-1(b)(1)(ii)(G);
		(h)	o	A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
		(i)	o	A 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)	o	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:			1844800
(b)		Percent of class:			5.89%
(c)		Number of shares as to which the person has:
			(i)	Sole power to vote or direct the vote:	1551300
			(ii)	Shared power to vote or to direct the vote:	293500
			(iii)	Sole power to dispose or to direct the disposition of:	1844800
			(iv)	Shared power to dispose or to direct the disposition of:	0

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 or Control Person.
	n/a
Item 8.	Identification and Classification of Members of the Group.
	n/a
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.

	February 13, 2008
	Date

	/s/ Caroline Levitt
	Signature

	Caroline Levitt, Chief Compliance Officer
	Name/Title

	x	Rule 13d-1(b)

	o	Rule 13d-1(c)

	o	Rule 13d-1(d)