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Disclosery

MAGN MAGNERA CORP

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COMMON STOCK (common), issuer CIK 41719

171 managers (176 13F filers) reported a position in MAGN shares at 2026-03-31, 36,581,659 shares in all. 21 filers opened a position and 33 filers sold out during the quarter.

Managers
171
13F filers
176
New
21
Added
61
Reduced
55
Sold out
33
Shares held by filers
36,581,659

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Newtyn Management, LLC2,760,000$26.2M2.8%+400,00013F-HRTimeline
LITTLEJOHN & CO LLC2,425,818$23.1M21.86%-168,06913F-HRTimeline
BlackRock, Inc.in group BlackRock, Inc.2,390,007$22.7M<0.01%+14,08213F-HRTimelineGroup
Engine Capital Management, LPin group Engine Capital Management, LP2,243,827$21.3M2.58%013F-HRTimelineGroup
VANGUARD GROUP INCgroup of 4 filers holding2,144,613$20.4MnewTimeline
MORGAN STANLEYin group MORGAN STANLEY1,967,831$18.7M<0.01%-454,63613F-HRTimelineGroup
Madison Avenue Partners, LP1,590,616$15.1M0.66%-190,03313F-HRTimeline
DG Capital Management, LLC1,207,356$11.5M4.97%+1,170,58113F-HRTimeline
Diameter Capital Partners LP1,205,793$11.5M2.2%013F-HRTimeline
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.896,215$8.52M0.01%+90,52213F-HRTimelineGroup
CANYON CAPITAL ADVISORS LLCin group CANYON CAPITAL ADVISORS LLC810,000$7.7M1%013F-HRTimelineGroup
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO828,799$7.43M<0.01%+577,76213F-HR/ATimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC780,258$7.42M<0.01%+34,29113F-HRTimelineGroup
Assenagon Asset Management S.A.742,425$7.06M0.01%013F-HRTimeline
Clearline Capital LP738,317$7.02M0.55%+77,71213F-HRTimeline
Ancora Advisors LLCin group Ancora Advisors LLC721,090$6.86M0.15%+295,57613F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP656,868$6.25M<0.01%+15,87713F-HRTimelineGroup
JB CAPITAL PARTNERS LP655,000$6.23M1.07%+140,00013F-HRTimeline
THOMPSON SIEGEL & WALMSLEY LLC574,264$5.46M0.1%new13F-HRTimeline
JACOBS LEVY EQUITY MANAGEMENT, INC524,890$4.99M0.02%-261,19313F-HRTimeline
AMERIPRISE FINANCIAL INCin group AMERIPRISE FINANCIAL INC508,525$4.84M<0.01%-11,42113F-HR/ATimelineGroup
Russell Investments Group, Ltd.in group Russell Investments Group, Lt…507,447$4.83M0.01%+139,13813F-HRTimelineGroup
CHARLES SCHWAB INVESTMENT MANAGEMENT INCin group Charles Schwab Trust Co453,697$4.31M<0.01%+51,45313F-HRTimelineGroup
Verition Fund Management LLC432,303$4.11M0.04%+102,37213F-HRTimeline
ALGERT GLOBAL LLC393,615$3.74M0.06%+102,93913F-HR/ATimeline
J. Goldman & Co LP387,281$3.68M0.17%-150,93913F-HRTimeline
Seven Six Capital Management, LLC374,868$3.56M3.83%+93,35013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC362,999$3.45M<0.01%-425,93713F-HRTimelineGroup
CITADEL ADVISORS LLCin group CITADEL ADVISORS LLC314,819$2.99M<0.01%-235,57313F-HRTimelineGroup
BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS304,910$2.9M<0.01%+24,98013F-HRTimelineGroup
Loews Corp300,000$2.85M0.02%013F-HRTimeline
GRATIA CAPITAL, LLC299,627$2.85M2.7%-15,00013F-HRTimeline
UBS Group AGgroup of 2 filers holding294,581$2.8M-97,969Timeline
Trexquant Investment LP287,304$2.73M0.02%+85,10513F-HRTimeline
TUDOR INVESTMENT CORP ET AL269,250$2.56M0.01%+114,23413F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP254,574$2.42M<0.01%+8,92013F-HRTimelineGroup
DIMENSIONAL FUND ADVISORS LPin group DIMENSIONAL FUND ADVISORS LP253,908$2.41M<0.01%+131,77213F-HRTimelineGroup
LSV ASSET MANAGEMENT244,493$2.33M0.01%-90,56513F-HRTimeline
AMERICAN CENTURY COMPANIES INCin group AMERICAN CENTURY COMPANIES INC221,133$2.1M<0.01%new13F-HRTimelineGroup
STATE OF WISCONSIN INVESTMENT BOARD202,888$1.93M<0.01%+110,48313F-HRTimeline
READYSTATE ASSET MANAGEMENT LP202,213$1.92M0.11%+108,08213F-HRTimeline
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC199,969$1.9M<0.01%-318,07513F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC198,883$1.89M0.04%+122,09413F-HRTimeline
Man Group plcin group Man Group plc185,430$1.76M<0.01%+100,04813F-HRTimelineGroup
CastleKnight Management LP183,495$1.75M0.08%013F-HRTimeline
Squarepoint Ops LLCin group Squarepoint Ops LLC177,878$1.69M<0.01%+19,42813F-HRTimelineGroup
Jump Financial, LLCin group Jump Financial, LLC173,262$1.65M0.02%+13,14913F-HRTimelineGroup
AQR CAPITAL MANAGEMENT LLCin group AQR CAPITAL MANAGEMENT LLC145,579$1.38M<0.01%new13F-HRTimelineGroup
Empowered Funds, LLC134,037$1.27M0.01%+61,09413F-HR/ATimeline
Engineers Gate Manager LP121,427$1.15M0.01%+33,54513F-HRTimeline
Bank of New York Mellon Corpin group Bank of New York Mellon Corp121,035$1.15M<0.01%+33,43513F-HRTimelineGroup
Weiss Asset Management LPin group Weiss Asset Management LP117,506$1.12M0.02%-15,25813F-HRTimelineGroupThe filing omitted confidential holdings, a later amendment may add them.
Invesco Ltd.in group Invesco Ltd.113,877$1.08M<0.01%-47,95713F-HRTimelineGroup
ING GROEP NV110,000$1.05M0.01%013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd102,976$979K0.02%+64,49513F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPgroup of 2 filers holding101,039$961K-23,701Timeline
Alpine Global Management, LLC100,000$951K0.14%+50,00013F-HRTimeline
Nuveen, LLCin group TIAA90,724$863K<0.01%-732,45313F-HRTimelineGroup
RAYMOND JAMES FINANCIAL INCin group RAYMOND JAMES FINANCIAL INC78,955$751K<0.01%+52,09113F-HRTimelineGroup
Y-Intercept (Hong Kong) Ltd78,572$747K0.01%+50,39313F-HRTimeline
Quinn Opportunity Partners LLC75,624$719K0.04%-10,24413F-HRTimeline
GSA CAPITAL PARTNERS LLP72,180$686K0.04%-55,91513F-HRTimeline
FMR LLCin group FMR LLC66,807$635K<0.01%-67,15513F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/57,788$550K<0.01%-175,77713F-HRTimelineGroup
ExodusPoint Capital Management, LP57,671$548K0.01%+1,64613F-HRTimeline
ALLIANCEBERNSTEIN L.P.35,534$538K<0.01%013F-HRTimeline
Voleon Capital Management LP55,410$527K0.01%+3,19213F-HRTimeline
MARSHALL WACE, LLPin group MARSHALL WACE, LLP55,167$525K<0.01%+22,54413F-HRTimelineGroup
PUBLIC EMPLOYEES RETIREMENT SYSTEM OF O…52,691$501K<0.01%-5,17813F-HRTimeline
HEALTHCARE OF ONTARIO PENSION PLAN TRUS…46,599$443K<0.01%-74,11613F-HRTimeline
RBF Capital, LLC45,492$433K0.02%-8,50013F-HR/ATimeline
RHUMBLINE ADVISERS41,030$390K<0.01%-8013F-HRTimeline
KNIGHTSBRIDGE ASSET MANAGEMENT, LLC36,480$347K0.05%-80913F-HRTimeline
PRICE T ROWE ASSOCIATES INC /MD/36,012$343K<0.01%+4,73513F-HRTimeline
Tactive Advisors, LLC34,895$332K0.09%+4,42613F-HRTimeline
Walleye Capital LLCin group Walleye Capital LLC30,646$291K<0.01%-215,35113F-HR/ATimelineGroup
FOX RUN MANAGEMENT, L.L.C.28,190$253K0.04%new13F-HRTimeline
Sterling Capital Management LLC26,315$250K<0.01%+24,47313F-HRTimeline
VOYA INVESTMENT MANAGEMENT LLCin group VOYA INVESTMENT MANAGEMENT LLC25,036$238K<0.01%new13F-HRTimelineGroup
CANADA PENSION PLAN INVESTMENT BOARD23,900$227K<0.01%+8,70013F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP23,481$223K<0.01%new13F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC22,104$210K<0.01%-6,90713F-HRTimelineGroup
BROWN ADVISORY INCin group BROWN ADVISORY INC22,054$210K<0.01%013F-HRTimelineGroup
PRELUDE CAPITAL MANAGEMENT, LLC19,299$184K0.01%+3,76013F-HRTimeline
Universal- Beteiligungs- und Serviceges…in group Universal- Beteiligungs- und …18,567$177K<0.01%013F-HRTimelineGroup
FRANKLIN RESOURCES INCin group Franklin Resources18,345$174K<0.01%-14513F-HRTimelineGroup
MetLife Investment Management, LLCin group MetLife Investment Management…18,230$173K<0.01%+1,81913F-HRTimelineGroup
Magnetar Financial LLCin group Magnetar Financial LLC18,160$173K<0.01%new13F-HRTimelineGroup
GLENMEDE TRUST CO NAin group GLENMEDE TRUST CO NA16,230$154K<0.01%-1,50013F-HRTimelineGroup
Atria Investments, Inc16,061$153K<0.01%+49513F-HRTimeline
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.in group Mirae Asset Global Investment…15,399$146K<0.01%+58313F-HRTimelineGroup
OPPENHEIMER ASSET MANAGEMENT INC.in group OPPENHEIMER ASSET MANAGEMENT …15,384$146K<0.01%new13F-HRTimelineGroup
HSBC HOLDINGS PLCin group HSBC HOLDINGS PLC15,687$146K<0.01%new13F-HRTimelineGroup
State of Wyoming15,176$144K0.02%new13F-HRTimeline
Creative Planningin group Creative Planning14,642$139K<0.01%-5,05213F-HRTimelineGroup
WELLS FARGO & COMPANY/MNin group WELLS FARGO & COMPANY/MN14,148$135K<0.01%-23,77913F-HR/ATimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO12,741$122K<0.01%-1,80613F-HRTimelineGroup
Quantbot Technologies LP12,513$119K<0.01%-98,99313F-HRTimeline
Graham Capital Management, L.P.11,715$111K<0.01%new13F-HRTimeline
DEUTSCHE BANK AG\in group DEUTSCHE BANK AG\11,340$108K<0.01%-13,93113F-HRTimelineGroup
National Philanthropic Trust10,918$104K<0.01%new13F-HRTimeline
Police & Firemen's Retirement System of…10,164$96.7K<0.01%013F-HRTimeline
Valeo Financial Advisors, LLC10,000$95.1K<0.01%013F-HRTimeline
BARCLAYS PLCin group BARCLAYS PLC8,513$81K<0.01%-41,29213F-HRTimelineGroup
NEW YORK STATE COMMON RETIREMENT FUND6,600$62.8K<0.01%-3,90013F-HRTimeline
GAMMA Investing LLC4,156$39.5K<0.01%+48413F-HRTimeline
Legal & General Group Plcin group Legal & General Group Plc2,756$26.2K<0.01%013F-HRTimelineGroup
Ameritas Investment Partners, Inc.in group Ameritas Investment Partners,…2,594$24.7K<0.01%013F-HRTimelineGroup
CWM, LLCin group CWM, LLC2,181$20.7K<0.01%+1,90513F-HRTimelineGroup
ROYAL BANK OF CANADAin group ROYAL BANK OF CANADA2,150$20K<0.01%-1,75613F-HRTimelineGroup
US BANCORP \DE\in group US BANCORP \DE\1,997$19K<0.01%+1,69013F-HRTimelineGroup
CALIFORNIA STATE TEACHERS RETIREMENT SY…1,729$16.4K<0.01%-23913F-HRTimeline
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…1,642$15.6K<0.01%+95913F-HRTimelineGroup
QUADRANT CAPITAL GROUP LLC1,444$13.7K<0.01%-41813F-HR/ATimeline
Rockefeller Capital Management L.P.in group Rockefeller Capital Managemen…1,344$12.8K<0.01%+88213F-HRTimelineGroup
NATIONAL BANK OF CANADA /FI/in group NATIONAL BANK OF CANADA /FI/1,010$9.61K<0.01%013F-HRTimelineGroup
Essential Partners LLC892$8.48K<0.01%new13F-HRTimeline
Federation des caisses Desjardins du Qu…869$8.26K<0.01%-6713F-HRTimeline
Investors Research Corp846$8.04K<0.01%-6113F-HRTimeline
FINANCIAL CONSULATE, INC685$6.51K<0.01%-4113F-HRTimeline
South Dakota Investment Council683$6K<0.01%-1,36813F-HRTimeline
FIFTH THIRD BANCORPin group FIFTH THIRD BANK, NATIONAL AS…603$5.74K<0.01%+59913F-HRTimelineGroup
Caption Management, LLC571$5.43K<0.01%-8,80513F-HRTimeline
NISA INVESTMENT ADVISORS, LLC481$4.57K<0.01%-44713F-HRTimeline
PNC Financial Services Group, Inc.in group PNC Financial Services Group,…337$3.21K<0.01%-4313F-HRTimelineGroup
Allworth Financial LP325$3.09K<0.01%+11313F-HRTimeline
Red Tortoise LLC314$2.99K<0.01%013F-HRTimeline
Optiver Holding B.V.in group Optiver Holding B.V.230$2.19K<0.01%+613F-HR/ATimelineGroup
FNY Investment Advisers, LLC275$2K<0.01%+1013F-HRTimeline
LOS ANGELES CAPITAL MANAGEMENT LLC159$1.51K<0.01%013F-HRTimeline
BARTLETT & CO. WEALTH MANAGEMENT LLC138$1.38K<0.01%013F-HRTimeline
Parallel Advisors, LLC119$1.13K<0.01%-1413F-HR/ATimeline
TD Waterhouse Canada Inc.107$1.01K<0.01%013F-HRTimeline
OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC.97$919<0.01%-1413F-HRTimelineGroup
SBI Securities Co., Ltd.84$799<0.01%-113F-HRTimeline
Sound Income Strategies, LLC73$692<0.01%013F-HRTimeline
MAI Capital Management72$685<0.01%+713F-HRTimeline
SIGNATUREFD, LLC55$523<0.01%013F-HRTimeline
Physician Wealth Advisors, Inc.54$514<0.01%013F-HRTimeline
BAYBAN53$504<0.01%new13F-HRTimeline
Pinnacle Wealth Planning Services, Inc.52$495<0.01%-1513F-HRTimeline
AdvisorNet Financial, Inc45$428<0.01%-49513F-HRTimeline
CALDWELL SUTTER CAPITAL, INC.44$418<0.01%013F-HRTimeline
ROTHSCHILD INVESTMENT LLC40$380<0.01%+1013F-HRTimeline
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP36$320<0.01%-4213F-HRTimelineGroup
Smartleaf Asset Management LLC31$284<0.01%+2113F-HRTimeline
IFP Advisors, Inc27$257<0.01%-613F-HRTimeline
SITTNER & NELSON, LLC27$257<0.01%013F-HRTimeline
BROWN BROTHERS HARRIMAN & COin group BROWN BROTHERS HARRIMAN & CO25$238<0.01%+1713F-HRTimelineGroup
HARBOUR INVESTMENTS, INC.25$238<0.01%new13F-HRTimeline
Root Financial Partners, LLC22$209<0.01%new13F-HRTimeline
MidFirst Bank21$200<0.01%013F-HRTimeline
Sunbelt Securities, Inc.20$190<0.01%new13F-HRTimeline
EverSource Wealth Advisors, LLCin group EverSource Wealth Advisors, L…20$190<0.01%+1913F-HR/ATimelineGroup
Transamerica Financial Advisors, LLCin group Transamerica Financial Adviso…10$95<0.01%new13F-HRTimelineGroup
WPG Advisers, LLC10$95<0.01%013F-HRTimeline
Advisory Services Network, LLC8$77<0.01%new13F-HRTimeline
Winch Advisory Services, LLC8$73<0.01%013F-HRTimeline
NORTHWESTERN MUTUAL WEALTH MANAGEMENT COin group NORTHWESTERN MUTUAL INVESTMEN…7$67<0.01%013F-HRTimelineGroup
Versant Capital Management, Inc7$67<0.01%-213F-HRTimeline
Private Wealth Management Group, LLC7$67<0.01%013F-HRTimeline
Eurizon Capital SGR S.p.A.7$67<0.01%013F-HRTimeline
Parkside Financial Bank & Trust6$58<0.01%013F-HRTimeline
SJS Investment Consulting Inc.4$39<0.01%new13F-HRTimeline
NewEdge Advisors, LLC3$29<0.01%013F-HR/ATimeline
Farther Finance Advisors, LLC3$28<0.01%+213F-HRTimeline
TWIN PEAKS WEALTH ADVISORS, LLC2$19<0.01%new13F-HRTimeline
BESSEMER GROUP INCin group BESSEMER GROUP INC12$00%-2213F-HRTimelineGroupValue filed as zero, left out of ratios.
Capital Advisors, Ltd. LLC1$00%013F-HRTimelineValue filed as zero, left out of ratios.
Covestor Ltd0$00%013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.
Erste Asset Management GmbHin group Erste Asset Management GmbH0$00%013F-HRTimelineGroupValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.