ADTN ADTRAN Holdings, Inc.
ADTRAN Holdings, Inc. (ADTN) Institutional Ownership
What the institutions did with ADTN last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 7.8M | 9.1% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.1M | 6.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 3.5M | 4.1% |
| STATE STREET CORP | 3.1M | 3.6% |
| ROYCE & ASSOCIATES LP | 3.0M | 3.5% |
| UBS Group AG | 2.9M | 3.4% |
| TWO SIGMA INVESTMENTS, LP | 2.9M | 3.4% |
| MILLENNIUM MANAGEMENT LLC | 2.7M | 3.2% |
| JPMORGAN CHASE & CO | 2.6M | 3.0% |
| DNB Asset Management AS | 2.6M | 3.0% |
| First Eagle Investment Management, LLC | 2.5M | 2.9% |
| GEODE CAPITAL MANAGEMENT, LLC | 2.0M | 2.3% |
| Assenagon Asset Management S.A. | 1.8M | 2.1% |
| MORGAN STANLEY | 1.8M | 2.1% |
| RENAISSANCE TECHNOLOGIES LLC | 1.8M | 2.1% |
| Boston Partners | 1.7M | 1.9% |
| Qube Research & Technologies Ltd | 1.4M | 1.6% |
| DIMENSIONAL FUND ADVISORS LP | 1.4M | 1.6% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 1.1M | 1.3% |
| D. E. Shaw & Co., Inc. | 1.1M | 1.3% |
| GOLDMAN SACHS GROUP INC | 1.0M | 1.2% |
| MARSHALL WACE, LLP | 1.0M | 1.2% |
| FMR LLC | 1.0M | 1.2% |
| Divisar Capital Management LLC | 851.5K | 1.0% |
| FEDERATED HERMES, INC. | 850.0K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| UBS Group AG | Increased | 249.2K | 2.9M | +2.7M |
| TWO SIGMA INVESTMENTS, LP | Increased | 1.1M | 2.9M | +1.8M |
| RENAISSANCE TECHNOLOGIES LLC | Increased | 202.9K | 1.8M | +1.6M |
| Assenagon Asset Management S.A. | Increased | 458.0K | 1.8M | +1.4M |
| Shannon River Fund Management LLC | Sold Out | 1.2M | 0 | -1.2M |
| Qube Research & Technologies Ltd | Increased | 269.9K | 1.4M | +1.1M |
| First Eagle Investment Management, LLC | Increased | 1.4M | 2.5M | +1.1M |
| JPMORGAN CHASE & CO | Increased | 1.5M | 2.6M | +1.1M |
| SG Americas Securities, LLC | Reduced | 1.3M | 236.5K | -1.1M |
| Divisar Capital Management LLC | Reduced | 1.8M | 851.5K | -917.9K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | 2.0M | 1.1M | -890.5K |
| MILLENNIUM MANAGEMENT LLC | Increased | 1.9M | 2.7M | +826.4K |
| NEEDHAM INVESTMENT MANAGEMENT LLC | Reduced | 1.2M | 450.0K | -778.5K |
| Invesco Ltd. | Reduced | 991.0K | 236.8K | -754.2K |
| PARADIGM CAPITAL MANAGEMENT INC/NY | Sold Out | 733.2K | 0 | -733.2K |
| STATE STREET CORP | Increased | 2.4M | 3.1M | +732.1K |
| SEI INVESTMENTS CO | Reduced | 1.1M | 403.3K | -701.9K |
| HENNESSY ADVISORS INC | New | 0 | 526.3K | +526.3K |
| DNB Asset Management AS | Reduced | 3.1M | 2.6M | -504.3K |
| Counterpoint Mutual Funds LLC | Increased | 32.7K | 529.9K | +497.1K |
| Kerrisdale Advisers, LLC | Reduced | 552.0K | 70.5K | -481.5K |
| BANK OF AMERICA CORP /DE/ | Increased | 367.2K | 845.4K | +478.2K |
| Boston Partners | Increased | 1.2M | 1.7M | +469.7K |
| Tieton Capital Management, LLC | Reduced | 1.0M | 570.5K | -464.6K |
| BARCLAYS PLC | Reduced | 927.8K | 479.2K | -448.6K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 461.7K | 58.1K | -403.6K |
| FMR LLC | Increased | 615.4K | 1.0M | +395.8K |
| WHITE PINE CAPITAL LLC | Reduced | 656.0K | 279.1K | -376.9K |
| Nuveen, LLC | Increased | 335.2K | 700.1K | +365.0K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 4.8M | 5.1M | +364.2K |
| CITADEL ADVISORS LLC | Reduced | 393.7K | 29.6K | -364.1K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Increased | 455.6K | 786.9K | +331.2K |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | New | 0 | 330.1K | +330.1K |
| Y-Intercept (Hong Kong) Ltd | Increased | 52.1K | 370.3K | +318.2K |
| WESTERLY CAPITAL MANAGEMENT, LLC | Reduced | 800.0K | 500.0K | -300.0K |
| CRAMER ROSENTHAL MCGLYNN LLC | Sold Out | 287.2K | 0 | -287.2K |
| Balyasny Asset Management L.P. | New | 0 | 275.5K | +275.5K |
| Squarepoint Ops LLC | Reduced | 888.0K | 617.4K | -270.6K |
| GRATIA CAPITAL, LLC | New | 0 | 250.5K | +250.5K |
| Manatuck Hill Partners, LLC | Sold Out | 250.0K | 0 | -250.0K |
| WELLS FARGO & COMPANY/MN | Increased | 378.6K | 625.2K | +246.7K |
| ExodusPoint Capital Management, LP | Reduced | 259.9K | 25.2K | -234.7K |
| Janney Montgomery Scott LLC | New | 0 | 230.2K | +230.2K |
| Lisanti Capital Growth, LLC | Reduced | 337.0K | 115.6K | -221.3K |
| Trexquant Investment LP | Reduced | 684.9K | 472.7K | -212.2K |
| NFJ INVESTMENT GROUP, LLC | New | 0 | 208.4K | +208.4K |
| Point72 Asset Management, L.P. | Increased | 564.8K | 764.8K | +200.0K |
| Empowered Funds, LLC | New | 0 | 184.6K | +184.6K |
| JANE STREET GROUP, LLC | Increased | 101.5K | 281.9K | +180.4K |
| LAZARD ASSET MANAGEMENT LLC | New | 0 | 176.6K | +176.6K |
| AQR CAPITAL MANAGEMENT LLC | Reduced | 843.9K | 671.4K | -172.5K |
| Skandinaviska Enskilda Banken AB (publ) | Reduced | 235.2K | 80.2K | -155.0K |
| ROYCE & ASSOCIATES LP | Reduced | 3.1M | 3.0M | -154.5K |
| MARSHALL WACE, LLP | Increased | 891.5K | 1.0M | +146.8K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.8M | 2.0M | +138.9K |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C. | Sold Out | 128.0K | 0 | -128.0K |
| Bienville Capital Management, LLC | New | 0 | 127.2K | +127.2K |
| D. E. Shaw & Co., Inc. | Reduced | 1.2M | 1.1M | -127.1K |
| TITAN GLOBAL CAPITAL MANAGEMENT USA LLC | New | 0 | 123.5K | +123.5K |
| Divisadero Street Capital Management, LP | Sold Out | 121.7K | 0 | -121.7K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.