Who owns Magnera Corp?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MAGN from SEC Form 13F filings across 180 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 180 institutions disclosed 36.4M shares of Magnera Corp worth $427.5M — about 101.3% of shares outstanding; the largest disclosed holder is Newtyn Management, LLC. Source: SEC Form 13F filings, parsed by EvidInvest.
180
13F holders
$427.5M
value, 2026 filers
101.3%
of shares outstanding (36.4M sh)
31
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MAGN's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | Newtyn Management, LLC | 2.8M | $32.9M | 4.1% | 7.8% | +1.4% |
| 2 | BlackRock, Inc. | 2.6M | $30.5M | 0.0% | 7.2% | +8.6% |
| 3 | Engine Capital Management, LP | 2.2M | $26.4M | 2.6% | 6.3% | 0.0% |
| 4 | LITTLEJOHN & CO LLC | 1.9M | $22.2M | 28.2% | 5.3% | -22.1% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 1.6M | $18.4M | 0.0% | 4.4% | +1.9% |
| 6 | MORGAN STANLEY | 1.5M | $18.0M | 0.0% | 4.3% | -22.0% |
| 7 | Madison Avenue Partners, LP | 1.3M | $15.3M | 0.7% | 3.6% | -18.1% |
| 8 | Diameter Capital Partners LP | 1.2M | $14.2M | 1.1% | 3.4% | 0.0% |
| 9 | DG Capital Management, LLC | 1.1M | $12.9M | 2.7% | 3.1% | -8.8% |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 862,384 | $10.1M | 0.0% | 2.4% | +10.5% |
| 11 | CANYON CAPITAL ADVISORS LLC | 810,000 | $9.5M | 1.1% | 2.3% | 0.0% |
| 12 | D. E. Shaw & Co., Inc. | 789,745 | $9.3M | 0.0% | 2.2% | -11.9% |
| 13 | Clearline Capital LP | 741,096 | $8.7M | 0.5% | 2.1% | +0.4% |
| 14 | STATE STREET CORP | 671,927 | $7.9M | 0.0% | 1.9% | +2.3% |
| 15 | JB CAPITAL PARTNERS LP | 655,000 | $7.7M | 1.2% | 1.8% | 0.0% |
| 16 | THOMPSON SIEGEL & WALMSLEY LLC | 649,806 | $7.6M | 0.1% | 1.8% | +13.2% |
| 17 | JPMORGAN CHASE & CO | 610,865 | $7.2M | 0.0% | 1.7% | -26.3% |
| 18 | Verition Fund Management LLC | 607,303 | $7.1M | 0.0% | 1.7% | +40.5% |
| 19 | JACOBS LEVY EQUITY MANAGEMENT, INC | 601,599 | $7.1M | 0.0% | 1.7% | +14.6% |
| 20 | AMERICAN CENTURY COMPANIES INC | 599,991 | $7.0M | 0.0% | 1.7% | +171.3% |
| 21 | AMERIPRISE FINANCIAL INC | 578,498 | $6.8M | 0.0% | 1.6% | +13.8% |
| 22 | DIMENSIONAL FUND ADVISORS LP | 571,344 | $6.7M | 0.0% | 1.6% | +125.0% |
| 23 | Assenagon Asset Management S.A. | 558,957 | $6.6M | 0.0% | 1.6% | -24.7% |
| 24 | UBS Group AG | 506,934 | $6.0M | 0.0% | 1.4% | +72.3% |
| 25 | AQR CAPITAL MANAGEMENT LLC | 479,549 | $5.6M | 0.0% | 1.3% | +229.4% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation · options positioning · supply chain. Research, not investment advice.