Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Magnera Corp

CIK 0000041719MAGN· quarter ending 2026-06-30

Shares outstanding

35,800,000

as of 2026-08-06 · 10-Q cover page, filed 2026-08-06

Held by 13F filers

36,953,680

103.2% of shares outstanding

Holders

180

+4 vs 2026-03-31 · 29 new, 25 exited

Value

$434.3M

shares +1.0% vs prior quarter

13F holdings exceed the share count. This is normal for heavily shorted stocks: shares lent to short sellers are reported by the lender and again by whoever bought them. Related filers occasionally report the same position twice as well.

Share classes (cover page of the 10-Q filed 2026-08-06, as of 2026-08-06)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	MAGN · NYSE	35,800,000	36,953,680	103.2%	180	55939A107

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

Count	CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
	55939A107	COM SHS	180	36,953,680	35,800,000	103.2%	$434.3M	1 call / 0 put	13DG	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings. 3 further CUSIPs map to this company (mostly bonds) but no 13F filer held them this quarter.

Top holders (180 of 180 · 55939A107)

change vs 2026-03-31

#	Filer	Shares	% of class	Value	Change
1	Newtyn Management, LLC	2,800,000	7.82%	$32.9M	+40,000 (+1.4%)
2	BlackRock, Inc.	2,596,578	7.25%	$30.5M	+206,571 (+8.6%)
3	Engine Capital Management, LP	2,243,827	6.27%	$26.4M	—
4	LITTLEJOHN & CO LLC	1,889,088	5.28%	$22.2M	-536,730 (-22.1%)
5	VANGUARD CAPITAL MANAGEMENT LLC	1,563,111	4.37%	$18.4M	+29,834 (+1.9%)
6	MORGAN STANLEY	1,534,193	4.29%	$18.0M	-433,638 (-22.0%)
7	Madison Avenue Partners, LP	1,302,066	3.64%	$15.3M	-288,550 (-18.1%)
8	Diameter Capital Partners LP	1,205,793	3.37%	$14.2M	—
9	Assenagon Asset Management S.A.	1,117,914	3.12%	$13.1M	+375,489 (+50.6%)
10	DG Capital Management, LLC	1,101,476	3.08%	$12.9M	-105,880 (-8.8%)
11	GEODE CAPITAL MANAGEMENT, LLC	862,384	2.41%	$10.1M	+82,126 (+10.5%)
12	CANYON CAPITAL ADVISORS LLC	810,000	2.26%	$9.5M	—
13	D. E. Shaw & Co., Inc.	789,745	2.21%	$9.3M	-106,470 (-11.9%)
14	Clearline Capital LP	741,096	2.07%	$8.7M	+2,779 (+0.4%)
15	STATE STREET CORP	671,927	1.88%	$7.9M	+15,059 (+2.3%)
16	JB CAPITAL PARTNERS LP	655,000	1.83%	$7.7M	—
17	THOMPSON SIEGEL & WALMSLEY LLC	649,806	1.82%	$7.6M	+75,542 (+13.2%)
18	JPMORGAN CHASE & CO	610,865	1.71%	$7.2M	-217,934 (-26.3%)
19	Verition Fund Management LLC	607,303	1.70%	$7.1M	+175,000 (+40.5%)
20	JACOBS LEVY EQUITY MANAGEMENT, INC	601,599	1.68%	$7.1M	+76,709 (+14.6%)
21	AMERICAN CENTURY COMPANIES INC	599,991	1.68%	$7.0M	+378,858 (+171.3%)
22	AMERIPRISE FINANCIAL INC	578,498	1.62%	$6.8M	+69,973 (+13.8%)
23	DIMENSIONAL FUND ADVISORS LP	571,344	1.60%	$6.7M	+317,436 (+125.0%)
24	UBS Group AG	506,934	1.42%	$6.0M	+212,788 (+72.3%)
25	AQR CAPITAL MANAGEMENT LLC	479,549	1.34%	$5.6M	+333,970 (+229.4%)
26	ALGERT GLOBAL LLC	447,367	1.25%	$5.3M	+53,752 (+13.7%)
27	J. Goldman & Co LP	424,989	1.19%	$5.0M	+37,708 (+9.7%)
28	CHARLES SCHWAB INVESTMENT MANAGEMENT INC	423,311	1.18%	$5.0M	-30,386 (-6.7%)
29	Seven Six Capital Management, LLC	398,568	1.11%	$4.7M	+23,700 (+6.3%)
30	SG Americas Securities, LLC	397,523	1.11%	$4.7M	NEW
31	GOLDMAN SACHS GROUP INC	371,488	1.04%	$4.4M	+8,489 (+2.3%)
32	Ancora Advisors LLC	370,701	1.04%	$4.4M	-350,389 (-48.6%)
33	VANGUARD PORTFOLIO MANAGEMENT LLC	360,698	1.01%	$4.2M	+46,289 (+14.7%)
34	Russell Investments Group, Ltd.	304,607	0.85%	$3.6M	-202,840 (-40.0%)
35	Loews Corp	300,000	0.84%	$3.5M	—
36	BNP PARIBAS FINANCIAL MARKETS	292,549	0.82%	$3.4M	-12,361 (-4.1%)
37	NORTHERN TRUST CORP	283,739	0.79%	$3.3M	+29,165 (+11.5%)
38	CastleKnight Management LP	282,095	0.79%	$3.3M	+98,600 (+53.7%)
39	VANGUARD FIDUCIARY TRUST CO	225,355	0.63%	$2.6M	+8,774 (+4.1%)
40	GRATIA CAPITAL, LLC	224,872	0.63%	$2.6M	-74,755 (-24.9%)
41	Squarepoint Ops LLC	217,272	0.61%	$2.6M	+39,394 (+22.1%)
42	Man Group plc	207,170	0.58%	$2.4M	+21,740 (+11.7%)
43	BRIDGEWAY CAPITAL MANAGEMENT, LLC	206,604	0.58%	$2.4M	+7,721 (+3.9%)
44	LSV ASSET MANAGEMENT	199,623	0.56%	$2.3M	-44,870 (-18.4%)
45	READYSTATE ASSET MANAGEMENT LP	192,534	0.54%	$2.3M	-9,679 (-4.8%)
46	PRIVATE MANAGEMENT GROUP INC	186,728	0.52%	$2.2M	NEW
47	NORGES BANK	180,500	0.50%	$2.1M	NEW
48	Trexquant Investment LP	175,176	0.49%	$2.1M	-112,128 (-39.0%)
49	STATE OF WISCONSIN INVESTMENT BOARD	164,888	0.46%	$1.9M	-38,000 (-18.7%)
50	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	161,600	0.45%	$1.9M	+115,001 (+246.8%)
51	TUDOR INVESTMENT CORP ET AL	147,495	0.41%	$1.7M	-121,755 (-45.2%)
52	Empowered Funds, LLC	141,758	0.40%	$1.7M	+7,721 (+5.8%)
53	CITADEL ADVISORS LLC	135,285	0.38%	$1.6M	-179,534 (-57.0%)
54	Bank of New York Mellon Corp	127,705	0.36%	$1.5M	+6,670 (+5.5%)
55	Vanguard Global Advisers, LLC	110,369	0.31%	$1.3M	+30,023 (+37.4%)
56	XTX Topco Ltd	106,905	0.30%	$1.3M	+3,929 (+3.8%)
57	Alpine Global Management, LLC	100,000	0.28%	$1.2M	—
58	Invesco Ltd.	99,714	0.28%	$1.2M	-14,163 (-12.4%)
59	Jump Financial, LLC	89,338	0.25%	$1.0M	-83,924 (-48.4%)
60	RAYMOND JAMES FINANCIAL INC	84,703	0.24%	$995K	+5,748 (+7.3%)
61	Balyasny Asset Management L.P.	81,310	0.23%	$955K	NEW
62	Quinn Opportunity Partners LLC	75,624	0.21%	$889K	—
63	FMR LLC	74,250	0.21%	$872K	+7,443 (+11.1%)
64	BANK OF AMERICA CORP /DE/	72,305	0.20%	$850K	+14,517 (+25.1%)
65	Thrivent Financial for Lutherans	71,449	0.20%	$840K	NEW
66	Susquehanna Portfolio Strategies, LLC	70,902	0.20%	$833K	-18,309 (-20.5%)
67	KNIGHTSBRIDGE ASSET MANAGEMENT, LLC	62,767	0.18%	$864K	+26,287 (+72.1%)
68	PUBLIC EMPLOYEES RETIREMENT SYSTEM OF OHIO	57,275	0.16%	$673K	+4,584 (+8.7%)
69	Nuveen, LLC	55,759	0.16%	$655K	-34,965 (-38.5%)
70	Quantbot Technologies LP	54,017	0.15%	$635K	+41,504 (+331.7%)
71	Voleon Capital Management LP	50,087	0.14%	$589K	-5,323 (-9.6%)
72	Engineers Gate Manager LP	49,240	0.14%	$579K	-72,187 (-59.4%)
73	RBF Capital, LLC	45,492	0.13%	$535K	—
74	RHUMBLINE ADVISERS	41,185	0.12%	$484K	+155 (+0.4%)
75	Tactive Advisors, LLC	40,035	0.11%	$470K	+5,140 (+14.7%)
76	ALLIANCEBERNSTEIN L.P.	39,134	0.11%	$372K	+3,600 (+10.1%)
77	PRICE T ROWE ASSOCIATES INC /MD/	37,610	0.11%	$442K	+1,598 (+4.4%)
78	DEUTSCHE BANK AG\	32,944	0.09%	$387K	+21,604 (+190.5%)
79	VOYA INVESTMENT MANAGEMENT LLC	32,656	0.09%	$384K	+7,620 (+30.4%)
80	CANADA PENSION PLAN INVESTMENT BOARD	31,600	0.09%	$371K	+7,700 (+32.2%)
81	Odyssean, LLC	30,236	0.08%	$355K	NEW
82	WELLS FARGO & COMPANY/MN	29,895	0.08%	$351K	+15,747 (+111.3%)
83	Dynamic Technology Lab Private Ltd	28,942	0.08%	$340K	NEW
84	CITIGROUP INC	26,185	0.07%	$308K	+4,081 (+18.5%)
85	Sterling Capital Management LLC	25,920	0.07%	$305K	-395 (-1.5%)
86	TWO SIGMA INVESTMENTS, LP	24,741	0.07%	$291K	+1,260 (+5.4%)
87	BROWN ADVISORY INC	22,054	0.06%	$259K	—
88	Creative Planning	22,012	0.06%	$259K	+7,370 (+50.3%)
89	IEQ CAPITAL, LLC	21,633	0.06%	$254K	NEW
90	Brevan Howard Capital Management LP	21,216	0.06%	$249K	NEW
91	National Philanthropic Trust	20,848	0.06%	$245K	+9,930 (+91.0%)
92	PRELUDE CAPITAL MANAGEMENT, LLC	20,124	0.06%	$236K	+825 (+4.3%)
93	LPL Financial LLC	20,009	0.06%	$235K	NEW
94	State of Wyoming	19,844	0.06%	$233K	+4,668 (+30.8%)
95	ARISTEIA CAPITAL, L.L.C.	18,966	0.05%	$223K	NEW
96	Universal- Beteiligungs- und Servicegesellschaft mbH	18,567	0.05%	$218K	—
97	MetLife Investment Management, LLC	17,904	0.05%	$210K	-326 (-1.8%)
98	HSBC HOLDINGS PLC	16,527	0.05%	$190K	+840 (+5.4%)
99	GLENMEDE TRUST CO NA	16,230	0.05%	$191K	—
100	WEALTH ENHANCEMENT ADVISORY SERVICES, LLC	15,752	0.04%	$203K	NEW
101	EP Wealth Advisors, LLC	15,658	0.04%	$184K	NEW
102	Cetera Investment Advisers	15,609	0.04%	$183K	NEW
103	MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.	15,548	0.04%	$183K	+149 (+1.0%)
104	Mariner, LLC	15,281	0.04%	$180K	NEW
105	OPPENHEIMER ASSET MANAGEMENT INC.	15,167	0.04%	$178K	-217 (-1.4%)
106	SEI INVESTMENTS CO	12,671	0.04%	$149K	-70 (-0.5%)
107	GLOBEFLEX CAPITAL L P	12,524	0.03%	$147K	NEW
108	MERCER GLOBAL ADVISORS INC /ADV	12,387	0.03%	$146K	NEW
109	Graham Capital Management, L.P.	11,748	0.03%	$138K	+33 (+0.3%)
110	Centiva Capital, LP	10,348	0.03%	$122K	NEW
111	Police & Firemen's Retirement System of New Jersey	10,164	0.03%	$119K	—
112	Valeo Financial Advisors, LLC	10,000	0.03%	$118K	—
113	NEW YORK STATE COMMON RETIREMENT FUND	6,600	0.02%	$78K	—
114	Arax Advisory Partners	6,476	0.02%	$76K	NEW
115	BARCLAYS PLC	5,446	0.02%	$64K	-3,067 (-36.0%)
116	GAMMA Investing LLC	4,101	0.01%	$48K	-55 (-1.3%)
117	Legal & General Group Plc	3,274	0.01%	$38K	+518 (+18.8%)
118	ROYAL BANK OF CANADA	3,224	0.01%	$38K	+1,074 (+50.0%)
119	Ameritas Investment Partners, Inc.	2,594	0.01%	$30K	—
120	US BANCORP \DE\	2,136	0.01%	$25K	+139 (+7.0%)
121	FIFTH THIRD BANCORP	1,509	0.00%	$18K	+906 (+150.2%)
122	BFSG, LLC	1,480	0.00%	$17K	NEW
123	Tower Research Capital LLC (TRC)	1,399	0.00%	$16K	-243 (-14.8%)
124	Allworth Financial LP	1,378	0.00%	$16K	+1,053 (+324.0%)
125	FEDERATED HERMES, INC.	1,004	0.00%	$12K	NEW
126	NATIONAL BANK OF CANADA /FI/	894	0.00%	$11K	-116 (-11.5%)
127	Federation des caisses Desjardins du Quebec	865	0.00%	$10K	-4 (-0.5%)
128	Investors Research Corp	846	0.00%	$10K	—
129	Rockefeller Capital Management L.P.	686	0.00%	$8K	-658 (-49.0%)
130	FINANCIAL CONSULATE, INC	685	0.00%	$8K	—
131	Essential Partners LLC	631	0.00%	$7K	-261 (-29.3%)
132	EverSource Wealth Advisors, LLC	547	0.00%	$6K	+527 (+2635.0%)
133	NISA INVESTMENT ADVISORS, LLC	481	0.00%	$6K	—
134	CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	454	0.00%	$5K	-1,275 (-73.7%)
135	UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	435	0.00%	$5K	—
136	Global Retirement Partners, LLC	290	0.00%	$3K	NEW
137	PNC Financial Services Group, Inc.	263	0.00%	$3K	-74 (-22.0%)
138	FNY Investment Advisers, LLC	245	0.00%	$2K	-30 (-10.9%)
139	ROTHSCHILD INVESTMENT LLC	207	0.00%	$2K	+167 (+417.5%)
140	Quarry LP	183	0.00%	$2K	NEW
141	LOS ANGELES CAPITAL MANAGEMENT LLC	159	0.00%	$2K	—
142	BARTLETT & CO. WEALTH MANAGEMENT LLC	138	0.00%	$2K	—
143	Optiver Holding B.V.	126	0.00%	$1K	-104 (-45.2%)
144	True Wealth Design, LLC	115	0.00%	$1K	NEW
145	TD Waterhouse Canada Inc.	107	0.00%	$1K	—
146	Farther Finance Advisors, LLC	104	0.00%	$1K	+101 (+3366.7%)
147	Bogart Wealth, LLC	88	0.00%	$1K	NEW
148	OSAIC HOLDINGS, INC.	88	0.00%	$1K	-9 (-9.3%)
149	SBI Securities Co., Ltd.	84	0.00%	$987	—
150	SJS Investment Consulting Inc.	75	0.00%	$882	+71 (+1775.0%)
151	SIGNATUREFD, LLC	55	0.00%	$646	—
152	Physician Wealth Advisors, Inc.	54	0.00%	$635	—
153	CALDWELL SUTTER CAPITAL, INC.	44	0.00%	$516	—
154	Pinnacle Wealth Planning Services, Inc.	41	0.00%	$482	-11 (-21.2%)
155	JONES FINANCIAL COMPANIES LLLP	38	0.00%	$476	+2 (+5.6%)
156	Smartleaf Asset Management LLC	31	0.00%	$375	—
157	GROUP ONE TRADING LLC	28	0.00%	$329	NEW
158	IFP Advisors, Inc	27	0.00%	$317	—
159	SITTNER & NELSON, LLC	27	0.00%	$318	—
160	Parallel Advisors, LLC	25	0.00%	$294	-94 (-79.0%)
161	Wealth Enhancement Trust Services, Inc.	25	0.00%	$294	NEW
162	BROWN BROTHERS HARRIMAN & CO	25	0.00%	$294	—
163	HARBOUR INVESTMENTS, INC.	25	0.00%	$294	—
164	Clearstead Advisors, LLC	22	0.00%	$259	NEW
165	MidFirst Bank	21	0.00%	$247	—
166	JPL Wealth Management, LLC	15	0.00%	$177	NEW
167	BESSEMER GROUP INC	12	0.00%	$0	—
168	Transamerica Financial Advisors, LLC	10	0.00%	$117	—
169	WPG Advisers, LLC	10	0.00%	$118	—
170	Winch Advisory Services, LLC	8	0.00%	$90	—
171	Capital Advisors, Ltd. LLC	8	0.00%	$0	+7 (+700.0%)
172	AdvisorNet Financial, Inc	8	0.00%	$94	-37 (-82.2%)
173	NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO	7	0.00%	$82	—
174	Eurizon Capital SGR S.p.A.	7	0.00%	$82	—
175	Private Wealth Management Group, LLC	7	0.00%	$83	—
176	Versant Capital Management, Inc	7	0.00%	$82	—
177	Parkside Financial Bank & Trust	6	0.00%	$71	—
178	NewEdge Advisors, LLC	3	0.00%	$35	—
179	Covestor Ltd	0	0.00%	$0	—
180	Erste Asset Management GmbH	0	0.00%	$0	—

Exited since 2026-03-31 (25 filers; largest 25 shown)

MILLENNIUM MANAGEMENT LLC	−199,969
Weiss Asset Management LP	−117,506
ING GROEP NV	−110,000
Y-Intercept (Hong Kong) Ltd	−78,572
GSA CAPITAL PARTNERS LLP	−72,180
ExodusPoint Capital Management, LP	−57,671
MARSHALL WACE, LLP	−55,167
Walleye Capital LLC	−30,646
FOX RUN MANAGEMENT, L.L.C.	−28,190
FRANKLIN RESOURCES INC	−18,345
Magnetar Financial LLC	−18,160
Atria Investments, Inc	−16,061
SUSQUEHANNA INTERNATIONAL GROUP, LLP	−11,828
CWM, LLC	−2,181
QUADRANT CAPITAL GROUP LLC	−1,444
South Dakota Investment Council	−683
Caption Management, LLC	−571
Red Tortoise LLC	−314
Sound Income Strategies, LLC	−73
MAI Capital Management	−72
BAYBAN	−53
Root Financial Partners, LLC	−22
Sunbelt Securities, Inc.	−20
Advisory Services Network, LLC	−8
TWIN PEAKS WEALTH ADVISORS, LLC	−2

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
Morgan Stanley Capital Services LLC	SCHEDULE 13G/A	2026-08-12	2026-06-30	1,369,957	3.8%
Morgan Stanley	SCHEDULE 13G/A	2026-08-12	2026-06-30	1,391,243	3.9%
Cetus Capital VI, L.P.	SCHEDULE 13G/A	2026-08-05	2026-07-28	1,561,199	4.36%
EMAI Management, LLC	SCHEDULE 13G/A	2026-05-15	2026-03-31	1,590,616	4.4%
Caraway Jackson Investments LLC	SCHEDULE 13G/A	2026-05-15	2026-03-31	1,590,616	4.4%
Eli Samaha	SCHEDULE 13G/A	2026-05-15	2026-03-31	1,590,616	4.4%
Madison Avenue GP, LLC	SCHEDULE 13G/A	2026-05-15	2026-03-31	1,590,616	4.4%
Madison Avenue International LP	SCHEDULE 13G/A	2026-05-15	2026-03-31	1,590,616	4.4%
Madison Avenue Partners, LP	SCHEDULE 13G/A	2026-05-15	2026-03-31	1,590,616	4.4%
Newtyn Management, LLC	SCHEDULE 13G/A	2026-05-15	2026-03-31	2,760,000	7.7%
The Vanguard Group	SCHEDULE 13G/A	2026-03-27	2026-03-13	0	0%
Ancora Advisors LLC	SCHEDULE 13G	2026-02-13	2025-12-31	533,161	1.5%
BlackRock, Inc.	SCHEDULE 13G	2025-07-17	2025-06-30	2,519,401	7.1%
Ancora Advisors, LLC	SCHEDULE 13G	2025-01-07	2024-12-31	1,883,376	5.33%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.