Washington, D.C. 20549

Under the Securities Exchange Act of 1934

(Amendment No. _1_)*
Arco Platform Ltd
(Name of Issuer)
Class A Shares
(Title of Class of Securities)
(CUSIP Number)
December 31, 2019
(Date of Event which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

	[x]  Rule 13d-1(b)

	[_]  Rule 13d-1(c)

	[_]  Rule 13d-1(d)

*The remainder of this cover page shall be filled out for a reporting persons 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. 	G04553106

1	Names of Reporting Persons
	AustralianSuper Pty Ltd
2	Check the appropriate box if a member of a Group (see instructions)
	(a)  [ ]
(b)  [ ]
3	Sec Use Only

4	Citizenship or Place of Organization
Number of Shares Beneficially Owned by Each Reporting Person With:
	5	Sole Voting Power
		1,426,932 Class A Shares
	6	Shared Voting Power
	7	Sole Dispositive Power
	8	Shared Dispositive Power
9	Aggregate Amount Beneficially Owned by Each Reporting Person
	1,426,932 Class A Shares
10	Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
	[ ]
11	Percent of class represented by amount in row (9)
12	Type of Reporting Person (See Instructions)

Item 1.
(a)	Name of Issuer: Arco Platform Ltd
(b)	Address of Issuers Principal Executive Offices:

Rua Augusta 2840
9th Floor, Suite 91
Sao Paulo  SP D5 01412-100 Brazil
Item 2.
(a)	Name of Person Filing:  AustralianSuper Pty Ltd
(b)	Address of Principal Business Office or, if None, Residence:

Level 33, 50 Lonsdale Street
Melbourne Victoria 3000
(c)	Citizenship:	Australia
(d)	Title and Class of Securities:	Class A
(e)	CUSIP No.:	G04553106
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)	[_]	Broker or dealer registered 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)(19) of the Act;
(d)	[_]	Investment company registered under Section 8 of the Investment Company Act of 1940;
(e)	[_]	An investment adviser in accordance with Rule 13d-1(b)(1)(ii)(E);
(f)	[_]	An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F);
(g)	[_]	A parent holding company or control person in accordance with Rule 13d-1(b)(1)(ii)(G);
(h)	[_]	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	[_]	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;
(j)	[x]	A non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J);
(k)	[_]	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K). If filing as a non-U.S. institution in accordance with Rule 240.13d-1(b)(1)(ii)(J), please specify the type of institution: ____
Item 4.	Ownership
(a)	Amount Beneficially Owned:  	 1,426,932 Class A Shares
 (b)	Percent of Class:  5.19%
 (c)	Number of shares as to which such person has:
	(i)	Sole power to vote or to direct the vote:  1,426,932 Class A Shares
	(ii)	Shared power to vote or to direct the vote: 0
(iii)	Sole power to dispose or to direct the disposition of: 0
(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.  Not applicable
Item 7.	Identification and classification of the subsidiary which acquired the security being reported on by the parent holding company or control person.  Not applicable
Item 8.	Identification and classification of members of the group.  Not applicable
Item 9.	Notice of Dissolution of Group.  Not applicable
Item 10.	Certifications.

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.
Dated:  February 12, 2020
/s/ Signature	Janine Cooper
Name	Janine Cooper
Title	Investment Compliance Manager