Mativ Holdings, Inc.: which funds bought and sold

Institutions that bought and sold Mativ Holdings shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.

Between March 31, 2026 and June 30, 2026, 106 institutions that filed 13F reports for both quarters added to or opened positions in Mativ Holdings, and 87 cut or closed them. Together they added a net 761K shares, +1.5% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 284K shares (−1.5%); index fund managers were net sellers of 33K shares (−0.2%). 34 opened a new position and 27 sold out entirely.

Bought, Q2 2026 106 institutions, 34 of them new holders Sold, Q2 2026 87 institutions, 27 of them sold out

Net change, all compared +761K shares (+1.5%)

Net change, active managers −284K shares (−1.5%), 24 bought, 26 sold

Buyers versus sellers

institutions compared, 228

106 bought 35 87 sold

Active managers and hedge funds 24 bought · 26 sold · −284K

Index fund managers 8 bought · 2 sold · −33K

Other institutions 74 bought · 59 sold · +1.1M

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
Arrowstreet Capital, Limited Partnership Hedge fund	+628K +203.6%	936K	$7.1M
Icon Advisers Inc	+545K New position	545K	$4.1M
Citadel Advisors LLC Hedge fund	+427K +523.2%	508K	$3.8M
Goldman Sachs Group Inc	+421K +47.6%	1.3M	$9.9M
American Century Companies Inc Active manager	+388K +14.4%	3.1M	$23.4M
Jacobs Levy Equity Management, Inc Active manager	+308K +88.2%	657K	$5M
Dimensional Fund Advisors LP	+276K +11.9%	2.6M	$19.6M
Lazard Asset Management LLC Active manager	+226K New position	226K	$1.7M
Acadian Asset Management LLC Active manager	+201K +82.0%	446K	$3.4M
D. E. Shaw & Co., Inc. Hedge fund	+196K +14.8%	1.5M	$11.5M
Blackrock, Inc. Index funds	+173K +2.9%	6.2M	$47M
Panagora Asset Management Inc Active manager	+164K +62.2%	427K	$3.2M
UBS Group AG	+144K +33.4%	576K	$4.4M
AQR Capital Management LLC Hedge fund	+137K +24.2%	703K	$5.3M
Morgan Stanley	+118K +11.8%	1.1M	$8.5M
Man Group PLC Hedge fund	+113K +124.6%	203K	$1.5M
Deprince Race & Zollo Inc Active manager	+108K +24.0%	558K	$4.2M
LSV Asset Management Active manager	+100K New position	100K	$758,000
Integrated Quantitative Investments LLC	+96K New position	96K	$729,619
Legato Capital Management LLC	+96K New position	96K	$729,619

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Arrowstreet Capital, Limited Partnership Hedge fund	+628K +203.6%	936K	$7.1M
Citadel Advisors LLC Hedge fund	+427K +523.2%	508K	$3.8M
American Century Companies Inc Active manager	+388K +14.4%	3.1M	$23.4M
Jacobs Levy Equity Management, Inc Active manager	+308K +88.2%	657K	$5M
Lazard Asset Management LLC Active manager	+226K New position	226K	$1.7M
Acadian Asset Management LLC Active manager	+201K +82.0%	446K	$3.4M
D. E. Shaw & Co., Inc. Hedge fund	+196K +14.8%	1.5M	$11.5M
Panagora Asset Management Inc Active manager	+164K +62.2%	427K	$3.2M
AQR Capital Management LLC Hedge fund	+137K +24.2%	703K	$5.3M
Man Group PLC Hedge fund	+113K +124.6%	203K	$1.5M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Invenomic Capital Management LP Hedge fund	−585K −30.3%	1.3M	$10.2M
First Eagle Investment Management, LLC Active manager	−466K −42.4%	633K	$4.8M
Charles Schwab Investment Management Inc Index funds	−429K −27.4%	1.1M	$8.6M
Boston Partners Active manager	−405K Sold out	0	—
Allspring Global Investments Holdings, LLC	−361K −8.8%	3.7M	$27.7M
Wellington Management Group LLP Active manager	−345K Sold out	0	—
Mackenzie Financial Corp	−298K Sold out	0	—
FMR LLC Active manager	−295K −66.4%	149K	$1.1M
Two Sigma Investments, LP Hedge fund	−250K −78.0%	71K	$534,132
Algert Global LLC Hedge fund	−181K Sold out	0	—
Engineers Gate Manager LP Hedge fund	−175K −85.8%	29K	$219,742
Jane Street Group, LLC	−155K Sold out	0	—
Millennium Management LLC Hedge fund	−140K Sold out	0	—
Jpmorgan Chase & Co	−128K −10.1%	1.1M	$8.7M
Squarepoint Ops LLC Hedge fund	−114K −48.0%	123K	$934,887
Massachusetts Financial Services Co Active manager	−107K −32.6%	221K	$1.7M
Point72 Asset Management, L.P. Hedge fund	−101K −30.7%	228K	$1.7M
Federated Hermes, Inc. Active manager	−86K −27.4%	229K	$1.7M
Bank Of America Corp	−80K −13.6%	506K	$3.8M
Deutsche Bank Ag\	−78K −59.0%	54K	$408,976

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Invenomic Capital Management LP Hedge fund	−585K −30.3%	1.3M	$10.2M
First Eagle Investment Management, LLC Active manager	−466K −42.4%	633K	$4.8M
Boston Partners Active manager	−405K Sold out	0	—
Wellington Management Group LLP Active manager	−345K Sold out	0	—
FMR LLC Active manager	−295K −66.4%	149K	$1.1M
Two Sigma Investments, LP Hedge fund	−250K −78.0%	71K	$534,132
Algert Global LLC Hedge fund	−181K Sold out	0	—
Engineers Gate Manager LP Hedge fund	−175K −85.8%	29K	$219,742
Millennium Management LLC Hedge fund	−140K Sold out	0	—
Squarepoint Ops LLC Hedge fund	−114K −48.0%	123K	$934,887

New positions

largest by value

Institution	Shares	Value June 30, 2026
Icon Advisers Inc	545K	$4.1M
Lazard Asset Management LLCActive manager	226K	$1.7M
LSV Asset ManagementActive manager	100K	$758,000
Integrated Quantitative Investments LLC	96K	$729,619
Legato Capital Management LLC	96K	$729,619
Verdad Advisers, LP	90K	$681,300
Aristeia Capital, L.L.C.Hedge fund	82K	$622,496
Balyasny Asset Management L.P.Hedge fund	38K	$290,514
Voya Investment Management LLC	37K	$279,651
Counterpoint Mutual Funds LLC	34K	$256,578

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Boston PartnersActive manager	405K	$3.5M
Wellington Management Group LLPActive manager	345K	$3M
Mackenzie Financial Corp	298K	$2.6M
Algert Global LLCHedge fund	181K	$1.6M
Jane Street Group, LLC	155K	$1.3M
Millennium Management LLCHedge fund	140K	$1.2M
HSBC Holdings PLC	58K	$505,746
Magnetar Financial LLCHedge fund	50K	$431,798
Quantbot Technologies LPHedge fund	49K	$428,623
Centiva Capital, LPHedge fund	26K	$228,767

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 203
Ten largest holders: 53.4%
Index fund managers: 27.7%
Active managers and hedge funds: 36.4%

Buying and selling by type of institution, March 31, 2026 to June 30, 2026
Type	Bought	Sold	New	Sold out	Net change in shares	Net %
Active managers and hedge funds	24	26	10	8	−284K	−1.5%
Index fund managers	8	2	0	0	−33K	−0.2%
Other institutions	74	59	24	19	+1.1M	+6.2%

Active managers and hedge funds: a list we maintain of about 400 well-known stock-picking firms and hedge funds, matched by SEC registration number (CIK) and checked against the filer names each quarter. Index fund managers: the large index houses, such as BlackRock, Vanguard, State Street, Geode and Northern Trust. Every other filer (banks, brokers, wealth managers, pension funds, insurers and firms not on the list) counts as another institution. A firm that files under several SEC registrations appears once for each.

What these filings can and cannot tell you

Form 13F lists the long positions in US-listed shares held by investment managers with more than $100 million in such holdings. Managers file it up to 45 days after each quarter ends, so this page shows what funds held at the end of each quarter, not what they are doing now: a position may have changed since. Short positions, most derivatives and smaller managers are not included, and a cut can mean a fund lost clients or rebalanced rather than a view on Mativ Holdings.

Only managers that filed a holdings report for both quarters are compared (228 here). 4 other holders are left out: first-time or late filers, firms that changed their SEC registration, and filings that withheld positions under confidential treatment, any of which would otherwise look like a new position or a sale. Figures are as reported by each manager in the SEC's quarterly 13F data sets; option positions are excluded.

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