Magnera Corp: which funds bought and sold

Institutions that bought and sold Magnera 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, 92 institutions that filed 13F reports for both quarters added to or opened positions in Magnera, and 62 cut or closed them. Together they added a net 666K shares, +1.9% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 104K shares (+0.8%); index fund managers were net buyers of 388K shares (+5.8%). 28 opened a new position and 21 sold out entirely.

Bought, Q2 2026 92 institutions, 28 of them new holders Sold, Q2 2026 62 institutions, 21 of them sold out

Net change, all compared +666K shares (+1.9%)

Net change, active managers +104K shares (+0.8%), 22 bought, 14 sold

Buyers versus sellers

institutions compared, 194

92 bought 40 62 sold

Active managers and hedge funds 22 bought · 14 sold · +104K

Index fund managers 8 bought · 1 sold · +388K

Other institutions 62 bought · 47 sold · +175K

Biggest buyers

by change in shares held

Biggest buyers
Institution	Change in shares	Shares June 30, 2026	Value
SG Americas Securities, LLC	+398K New position	398K	$4.7M
American Century Companies Inc Active manager	+379K +171.3%	600K	$7M
Assenagon Asset Management S.A.	+375K +50.6%	1.1M	$13.1M
AQR Capital Management LLC Hedge fund	+334K +229.4%	480K	$5.6M
Dimensional Fund Advisors LP	+317K +125.0%	571K	$6.7M
UBS Group AG	+213K +72.3%	507K	$6M
Blackrock, Inc. Index funds	+207K +8.6%	2.6M	$30.5M
Private Management Group Inc	+187K New position	187K	$2.2M
Verition Fund Management LLC Hedge fund	+175K +40.5%	607K	$7.1M
Healthcare Of Ontario Pension Plan Trust Fund	+115K +246.8%	162K	$1.9M
Castleknight Management LP Hedge fund	+99K +53.7%	282K	$3.3M
Geode Capital Management, LLC Index funds	+82K +10.5%	862K	$10.1M
Balyasny Asset Management L.P. Hedge fund	+81K New position	81K	$955,393
Jacobs Levy Equity Management, Inc Active manager	+77K +14.6%	602K	$7.1M
Thompson Siegel & Walmsley LLC	+76K +13.2%	650K	$7.6M
Thrivent Financial For Lutherans	+71K New position	71K	$840,000
Ameriprise Financial Inc	+70K +13.8%	578K	$6.8M
Algert Global LLC Hedge fund	+54K +13.7%	447K	$5.3M
Vanguard Portfolio Management LLC Index funds	+46K +14.7%	361K	$4.2M
Quantbot Technologies LP Hedge fund	+42K +331.7%	54K	$634,700

Biggest buyers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
American Century Companies Inc Active manager	+379K +171.3%	600K	$7M
AQR Capital Management LLC Hedge fund	+334K +229.4%	480K	$5.6M
Verition Fund Management LLC Hedge fund	+175K +40.5%	607K	$7.1M
Castleknight Management LP Hedge fund	+99K +53.7%	282K	$3.3M
Balyasny Asset Management L.P. Hedge fund	+81K New position	81K	$955,393
Jacobs Levy Equity Management, Inc Active manager	+77K +14.6%	602K	$7.1M
Algert Global LLC Hedge fund	+54K +13.7%	447K	$5.3M
Quantbot Technologies LP Hedge fund	+42K +331.7%	54K	$634,700
Squarepoint Ops LLC Hedge fund	+39K +22.1%	217K	$2.6M
J. Goldman & Co LP Hedge fund	+38K +9.7%	425K	$5M

Biggest sellers

by change in shares held

Biggest sellers
Institution	Change in shares	Shares June 30, 2026	Value
Littlejohn & Co LLC	−537K −22.1%	1.9M	$22.2M
Morgan Stanley	−434K −22.0%	1.5M	$18M
Madison Avenue Partners, LP Hedge fund	−289K −18.1%	1.3M	$15.3M
Jpmorgan Chase & Co	−218K −26.3%	611K	$7.2M
Russell Investments Group, Ltd.	−203K −40.0%	305K	$3.6M
Millennium Management LLC Hedge fund	−200K Sold out	0	—
Citadel Advisors LLC Hedge fund	−180K −57.0%	135K	$1.6M
Tudor Investment Corp Et Al Hedge fund	−122K −45.2%	147K	$1.7M
Trexquant Investment LP Hedge fund	−112K −39.0%	175K	$2.1M
ING Groep NV	−110K Sold out	0	—
D. E. Shaw & Co., Inc. Hedge fund	−106K −11.9%	790K	$9.3M
Dg Capital Management, LLC	−106K −8.8%	1.1M	$12.9M
Jump Financial, LLC	−84K −48.4%	89K	$1M
Y-Intercept (Hong Kong) Ltd	−79K Sold out	0	—
Gratia Capital, LLC	−75K −24.9%	225K	$2.6M
Engineers Gate Manager LP Hedge fund	−72K −59.4%	49K	$578,570
Gsa Capital Partners LLP	−72K Sold out	0	—
Exoduspoint Capital Management, LP Hedge fund	−58K Sold out	0	—
Marshall Wace, LLP Hedge fund	−55K Sold out	0	—
LSV Asset Management Active manager	−45K −18.4%	200K	$2.3M

Biggest sellers, active managers and hedge funds
Institution	Change in shares	Shares June 30, 2026	Value
Madison Avenue Partners, LP Hedge fund	−289K −18.1%	1.3M	$15.3M
Millennium Management LLC Hedge fund	−200K Sold out	0	—
Citadel Advisors LLC Hedge fund	−180K −57.0%	135K	$1.6M
Tudor Investment Corp Et Al Hedge fund	−122K −45.2%	147K	$1.7M
Trexquant Investment LP Hedge fund	−112K −39.0%	175K	$2.1M
D. E. Shaw & Co., Inc. Hedge fund	−106K −11.9%	790K	$9.3M
Engineers Gate Manager LP Hedge fund	−72K −59.4%	49K	$578,570
Exoduspoint Capital Management, LP Hedge fund	−58K Sold out	0	—
Marshall Wace, LLP Hedge fund	−55K Sold out	0	—
LSV Asset Management Active manager	−45K −18.4%	200K	$2.3M

New positions

largest by value

Institution	Shares	Value June 30, 2026
SG Americas Securities, LLC	398K	$4.7M
Private Management Group Inc	187K	$2.2M
Balyasny Asset Management L.P.Hedge fund	81K	$955,393
Thrivent Financial For Lutherans	71K	$840,000
Odyssean, LLC	30K	$355,273
Dynamic Technology Lab Private Ltd	29K	$340,000
Ieq Capital, LLC	22K	$254,188
Brevan Howard Capital Management LPHedge fund	21K	$249,288
LPL Financial LLC	20K	$235,106
Aristeia Capital, L.L.C.Hedge fund	19K	$222,851

Sold out

largest by value

Institution	Shares	Value March 31, 2026
Millennium Management LLCHedge fund	200K	$1.9M
ING Groep NV	110K	$1M
Y-Intercept (Hong Kong) Ltd	79K	$747,220
Gsa Capital Partners LLP	72K	$686,000
Exoduspoint Capital Management, LPHedge fund	58K	$548,451
Marshall Wace, LLPHedge fund	55K	$524,638
Walleye Capital LLCHedge fund	31K	$291,443
Fox Run Management, L.L.C.	28K	$252,582
Franklin Resources IncActive manager	18K	$174,461
Magnetar Financial LLCHedge fund	18K	$172,701

Who holds the shares

13F holdings at June 30, 2026

Institutions reporting: 175
Ten largest holders: 47.4%
Index fund managers: 19.2%
Active managers and hedge funds: 33.7%

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	22	14	5	6	+104K	+0.8%
Index fund managers	8	1	0	0	+388K	+5.8%
Other institutions	62	47	23	15	+175K	+1.0%

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 Magnera.

Only managers that filed a holdings report for both quarters are compared (194 here). 7 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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