ADTRAN Holdings, Inc. (ADTN) — Institutional Holders, Q2 2026
251 institutional investment managers reported a ADTN position on SEC Form 13F-HR for the quarter ended June 30, 2026, with a combined reported value of $1.2B. Every filer is listed below, ranked by position value, 100 per page; this page shows ranks 1 to 100. Put and call option positions are excluded, and a firm filing several lots or share classes is shown once with its total.
ADTN in Q2 2026: what funds did
Funds that filed a 13F for both Q1 2026 and Q2 2026, by what they did with the common stock. Share counts are adjusted for any split between the two quarters; dollar figures are the change in shares at this quarter’s price.
Biggest buyers
- UBS Group AGAdded · +2,691,567 sh+$37.4M
- TWO SIGMA INVESTMENTSAdded · +1,772,829 sh+$24.6M
- RENAISSANCE TECHNOLOGIESAdded · +1,570,841 sh+$21.8M
- Qube Research & Technologies LtdAdded · +1,128,968 sh+$15.7M
- JPMORGAN CHASEAdded · +1,104,360 sh+$15.4M
Biggest sellers
- Shannon River Fund ManagementSold out · -1,219,976 sh-$17.0M
- SG Americas SecuritiesTrimmed · -1,079,539 sh-$15.0M
- Divisar Capital ManagementTrimmed · -917,913 sh-$12.8M
- WILLIAM BLAIR INVESTMENT MANAGEMENTTrimmed · -890,511 sh-$12.4M
- NEEDHAM INVESTMENT MANAGEMENTTrimmed · -778,500 sh-$10.8M
ADTN 13F holders ranked 1–100 of 251
| # | Institution | Shares | Value | % of portfolio | QoQShares vs Q1 2026 |
|---|---|---|---|---|---|
| 1 | BlackRock#1 · 7,836,196 sh | 7,836,196 | $108.9M | <0.01% | -0.1% |
| 2 | VANGUARD PORTFOLIO MANAGEMENT#2 · 5,135,649 sh | 5,135,649 | $71.4M | <0.01% | +7.6% |
| 3 | VANGUARD CAPITAL MANAGEMENT#3 · 3,510,271 sh | 3,510,271 | $48.8M | <0.01% | +2.5% |
| 4 | STATE STREET#4 · 3,082,794 sh | 3,082,794 | $42.9M | <0.01% | +31.1% |
| 5 | ROYCE & ASSOCIATES#5 · 2,972,917 sh | 2,972,917 | $41.3M | 0.33% | -4.9% |
| 6 | UBS Group AG#6 · 2,940,724 sh | 2,940,724 | $40.9M | <0.01% | +1080.3% |
| 7 | TWO SIGMA INVESTMENTS#7 · 2,896,353 sh | 2,896,353 | $40.3M | 0.03% | +157.8% |
| 8 | MILLENNIUM MANAGEMENT#8 · 2,722,820 sh | 2,722,820 | $37.8M | 0.01% | +43.6% |
| 9 | DnB Asset Management AS#9 · 2,619,389 sh | 2,619,389 | $36.4M | 0.10% | -16.1% |
| 10 | JPMORGAN CHASE#10 · 2,623,057 sh | 2,623,057 | $36.1M | <0.01% | +72.7% |
| 11 | GEODE CAPITAL MANAGEMENT#11 · 1,958,052 sh | 1,958,052 | $27.2M | <0.01% | +7.6% |
| 12 | MORGAN STANLEY#12 · 1,792,752 sh | 1,792,752 | $24.9M | <0.01% | -2.2% |
| 13 | RENAISSANCE TECHNOLOGIES#13 · 1,773,740 sh | 1,773,740 | $24.7M | 0.03% | +774.2% |
| 14 | Boston Partners#14 · 1,651,038 sh | 1,651,038 | $22.7M | 0.02% | +39.8% |
| 15 | Qube Research & Technologies Ltd#15 · 1,398,913 sh | 1,398,913 | $19.4M | 0.02% | +418.2% |
| 16 | DIMENSIONAL FUND ADVISORS#16 · 1,366,243 sh | 1,366,243 | $19.0M | <0.01% | +2.2% |
| 17 | First Eagle Investment Management#17 · 1,248,507 sh | 1,248,507 | $17.4M | 0.03% | -8.8% |
| 18 | WILLIAM BLAIR INVESTMENT MANAGEMENT#18 · 1,099,019 sh | 1,099,019 | $15.3M | 0.05% | -44.8% |
| 19 | D. E. Shaw#19 · 1,091,898 sh | 1,091,898 | $15.2M | <0.01% | -10.4% |
| 20 | GOLDMAN SACHS GROUP#20 · 1,045,037 sh | 1,045,037 | $14.5M | <0.01% | +7.7% |
| 21 | MARSHALL WACE, LLP#21 · 1,038,292 sh | 1,038,292 | $14.4M | 0.01% | +16.5% |
| 22 | FMR#22 · 1,011,195 sh | 1,011,195 | $14.1M | <0.01% | +64.3% |
| 23 | Assenagon Asset Management S.A.#23 · 917,754 sh | 917,754 | $12.8M | — | +100.4% |
| 24 | Divisar Capital Management#24 · 851,526 sh | 851,526 | $11.8M | 2.73% | -51.9% |
| 25 | FEDERATED HERMES#25 · 849,967 sh | 849,967 | $11.8M | 0.02% | -7.9% |
| 26 | BANK OF AMERICA#26 · 845,421 sh | 845,421 | $11.8M | <0.01% | +130.2% |
| 27 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP#27 · 786,873 sh | 786,873 | $10.9M | <0.01% | +72.7% |
| 28 | Point72 Asset Management, L.P.#28 · 764,780 sh | 764,780 | $10.6M | 0.01% | +35.4% |
| 29 | HEARTLAND ADVISORS#29 · 750,000 sh | 750,000 | $10.4M | 0.46% | 0.0% |
| 30 | NORTHERN#30 · 734,960 sh | 734,960 | $10.2M | <0.01% | +11.5% |
| 31 | CHARLES SCHWAB INVESTMENT MANAGEMENT#31 · 714,068 sh | 714,068 | $9.9M | <0.01% | +14.4% |
| 32 | Nuveen#32 · 700,147 sh | 700,147 | $9.7M | <0.01% | +108.9% |
| 33 | Kovack Advisors#33 · 696,210 sh | 696,210 | $9.5M | 0.46% | -5.4% |
| 34 | AQR CAPITAL MANAGEMENT#34 · 671,403 sh | 671,403 | $9.3M | <0.01% | -20.4% |
| 35 | Connor, Clark & Lunn Investment Management Ltd.#35 · 629,119 sh | 629,119 | $8.7M | 0.02% | +12.3% |
| 36 | WELLS FARGO & COMPANY#36 · 625,245 sh | 625,245 | $8.7M | <0.01% | +65.2% |
| 37 | Squarepoint Ops#37 · 617,388 sh | 617,388 | $8.6M | <0.01% | -30.5% |
| 38 | NORGES BANK#38 · 575,400 sh | 575,400 | $8.0M | <0.01% | — |
| 39 | 1492 Capital Management#39 · 573,128 sh | 573,128 | $8.0M | 2.35% | -8.3% |
| 40 | Tieton Capital Management#40 · 570,542 sh | 570,542 | $7.9M | 2.28% | -44.9% |
| 41 | HRT FINANCIAL#41 · 561,192 sh | 561,192 | $7.8M | 0.02% | -1.2% |
| 42 | TUDOR INVESTMENT ET AL#42 · 541,455 sh | 541,455 | $7.5M | 0.01% | -17.3% |
| 43 | VANGUARD FIDUCIARY#43 · 540,877 sh | 540,877 | $7.5M | <0.01% | +3.5% |
| 44 | Counterpoint Mutual Funds#44 · 529,866 sh | 529,866 | $7.4M | — | +1519.3% |
| 45 | HENNESSY ADVISORS#45 · 526,300 sh | 526,300 | $7.3M | 0.23% | New |
| 46 | ROYAL BANK OF CANADA#46 · 504,227 sh | 504,227 | $7.0M | <0.01% | +10.2% |
| 47 | NOMURA#47 · 502,322 sh | 502,322 | $7.0M | <0.01% | +8.2% |
| 48 | WESTERLY CAPITAL MANAGEMENT#48 · 500,000 sh | 500,000 | $7.0M | 1.28% | -37.5% |
| 49 | BARCLAYS PLC#49 · 479,197 sh | 479,197 | $6.7M | <0.01% | -48.3% |
| 50 | Trexquant Investment#50 · 472,733 sh | 472,733 | $6.6M | 0.04% | -31.0% |
| 51 | NEEDHAM INVESTMENT MANAGEMENT#51 · 450,000 sh | 450,000 | $6.3M | 0.19% | -63.4% |
| 52 | SEI INVESTMENTS#52 · 403,253 sh | 403,253 | $5.6M | <0.01% | -63.5% |
| 53 | Y-Intercept (Hong Kong) Ltd#53 · 370,294 sh | 370,294 | $5.1M | — | +610.8% |
| 54 | MACKENZIE FINANCIAL#54 · 352,438 sh | 352,438 | $4.9M | <0.01% | -4.4% |
| 55 | HEALTHCARE OF ONTARIO PENSION PLAN FUND#55 · 330,100 sh | 330,100 | $4.6M | <0.01% | New |
| 56 | JANE STREET GROUP#56 · 281,868 sh | 281,868 | $3.9M | <0.01% | +177.7% |
| 57 | WHITE PINE CAPITAL#57 · 279,072 sh | 279,072 | $3.9M | 0.92% | -5.2% |
| 58 | BALYASNY ASSET MANAGEMENT L.P.#58 · 275,489 sh | 275,489 | $3.8M | <0.01% | New |
| 59 | AMERIPRISE FINANCIAL#59 · 266,134 sh | 266,134 | $3.7M | <0.01% | +54.8% |
| 60 | Bank of New York Mellon#60 · 255,026 sh | 255,026 | $3.5M | <0.01% | +6.3% |
| 61 | GRATIA CAPITAL#61 · 250,492 sh | 250,492 | $3.5M | 2.11% | New |
| 62 | ACADIAN ASSET MANAGEMENT#62 · 247,014 sh | 247,014 | $3.4M | <0.01% | +67.2% |
| 63 | AMERICAN CENTURY COMPANIES#63 · 238,878 sh | 238,878 | $3.3M | <0.01% | +10.5% |
| 64 | Invesco Ltd.#64 · 236,765 sh | 236,765 | $3.3M | <0.01% | -76.1% |
| 65 | SG Americas Securities#65 · 236,510 sh | 236,510 | $3.3M | <0.01% | -82.0% |
| 66 | DEUTSCHE BANK AG\#66 · 235,833 sh | 235,833 | $3.3M | <0.01% | -8.8% |
| 67 | Janney Montgomery Scott#67 · 230,160 sh | 230,160 | $3.2M | <0.01% | New |
| 68 | ALGERT GLOBAL#68 · 228,160 sh | 228,160 | $3.2M | 0.04% | 0.0% |
| 69 | NFJ INVESTMENT GROUP#69 · 208,413 sh | 208,413 | $2.9M | 0.10% | New |
| 70 | Walleye Trading#70 · 208,278 sh | 208,278 | $2.9M | <0.01% | +34.5% |
| 71 | UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AME#71 · 201,962 sh | 201,962 | $2.8M | <0.01% | +6.2% |
| 72 | Herald Investment Management Ltd#72 · 200,000 sh | 200,000 | $2.8M | — | 0.0% |
| 73 | Engineers Gate Manager#73 · 198,697 sh | 198,697 | $2.8M | 0.04% | -9.1% |
| 74 | Inspire Investing#74 · 195,941 sh | 195,941 | $2.7M | — | +7.4% |
| 75 | STATE OF WISCONSIN INVESTMENT BOARD#75 · 192,528 sh | 192,528 | $2.7M | <0.01% | -22.9% |
| 76 | Empowered Funds#76 · 184,606 sh | 184,606 | $2.6M | 0.01% | New |
| 77 | BNP PARIBAS FINANCIAL MARKETS#77 · 180,890 sh | 180,890 | $2.5M | <0.01% | +5.9% |
| 78 | XTX Topco Ltd#78 · 178,573 sh | 178,573 | $2.5M | 0.03% | +98.8% |
| 79 | LAZARD ASSET MANAGEMENT#79 · 176,625 sh | 176,625 | $2.5M | <0.01% | New |
| 80 | RAYMOND JAMES FINANCIAL#80 · 146,245 sh | 146,245 | $2.0M | <0.01% | -23.8% |
| 81 | Swiss National Bank#81 · 145,700 sh | 145,700 | $2.0M | <0.01% | +2.2% |
| 82 | SUSQUEHANNA INTERNATIONAL GROUP, LLP#82 · 140,133 sh | 140,133 | $1.9M | <0.01% | +22.9% |
| 83 | PRICE T ROWE ASSOCIATES#83 · 138,630 sh | 138,630 | $1.9M | <0.01% | +13.0% |
| 84 | GLOBEFLEX CAPITAL L P#84 · 132,526 sh | 132,526 | $1.8M | 0.24% | +0.1% |
| 85 | Lido Advisors#85 · 129,355 sh | 129,355 | $1.8M | <0.01% | 0.0% |
| 86 | Bienville Capital Management#86 · 127,247 sh | 127,247 | $1.8M | 0.24% | New |
| 87 | Brevan Howard Capital Management#87 · 124,994 sh | 124,994 | $1.7M | 0.01% | -13.3% |
| 88 | TITAN GLOBAL CAPITAL MANAGEMENT USA#88 · 123,465 sh | 123,465 | $1.7M | 0.22% | New |
| 89 | Lisanti Capital Growth#89 · 115,625 sh | 115,625 | $1.6M | 0.35% | -65.7% |
| 90 | OCCUDO QUANTITATIVE STRATEGIES#90 · 115,286 sh | 115,286 | $1.6M | 0.09% | +14.2% |
| 91 | Toroso Investments#91 · 115,014 sh | 115,014 | $1.6M | <0.01% | +60.0% |
| 92 | MASSACHUSETTS FINANCIAL SERVICES#92 · 109,674 sh | 109,674 | $1.5M | <0.01% | +62.2% |
| 93 | BNP Paribas Asset Management Holding S.A.#93 · 106,853 sh | 106,853 | $1.5M | <0.01% | -13.1% |
| 94 | RHUMBLINE ADVISERS#94 · 103,040 sh | 103,040 | $1.4M | <0.01% | +10.3% |
| 95 | Man Group plc#95 · 102,762 sh | 102,762 | $1.4M | <0.01% | +89.7% |
| 96 | Polymer Capital Management (US)#96 · 101,366 sh | 101,366 | $1.4M | 0.19% | New |
| 97 | Creative Planning#97 · 97,558 sh | 97,558 | $1.4M | <0.01% | +12.8% |
| 98 | BURNEY#98 · 93,597 sh | 93,597 | $1.3M | — | New |
| 99 | Integrated Quantitative Investments#99 · 92,997 sh | 92,997 | $1.3M | 0.21% | +142.3% |
| 100 | DZ BANK AG Deutsche Zentral Genossenschafts Bank, Frankfurt#100 · 90,000 sh | 90,000 | $1.3M | <0.01% | New |
Funds that sold out of ADTN in Q2 2026 (28)
Held ADTN at the end of Q1 2026 and filed a Q2 2026 13F without it. Not in the list above, because they no longer hold it. Largest prior position first.
| Institution | Shares sold | Value in Q1 2026 |
|---|---|---|
| Shannon River Fund Management1,219,976 sh | 1,219,976 | $15.3M |
| PARADIGM CAPITAL MANAGEMENT733,200 sh | 733,200 | $9.2M |
| CRAMER ROSENTHAL MCGLYNN287,178 sh | 287,178 | $3.6M |
| Manatuck Hill Partners250,000 sh | 250,000 | $3.1M |
| LANDSCAPE CAPITAL MANAGEMENT, L.L.C.128,002 sh | 128,002 | $1.6M |
| Divisadero Street Capital Management121,731 sh | 121,731 | $1.5M |
| Jump Financial105,866 sh | 105,866 | $1.3M |
| Nierenberg Investment Management Company93,110 sh | 93,110 | $1.2M |
| HighTower Advisors93,101 sh | 93,101 | $1.2M |
| Susquehanna Portfolio Strategies65,639 sh | 65,639 | $825.7K |
| VOLORIDGE INVESTMENT MANAGEMENT33,937 sh | 33,937 | $426.9K |
| Jain Global33,664 sh | 33,664 | $423.5K |
| GROUP ONE TRADING, L.P.26,275 sh | 26,275 | $330.5K |
| Bridgefront Capital23,619 sh | 23,619 | $297.1K |
| FOX RUN MANAGEMENT, L.L.C.18,098 sh | 18,098 | $220.6K |
| CANADA PENSION PLAN INVESTMENT BOARD15,500 sh | 15,500 | $195.0K |
| WINTON GROUP Ltd15,000 sh | 15,000 | $188.7K |
| DRW Securities14,600 sh | 14,600 | $183.7K |
| Financial Engines Advisors L.L.C.14,518 sh | 14,518 | $182.6K |
| Neuberger Berman Group13,908 sh | 13,908 | $175.0K |
| Cinctive Capital Management13,522 sh | 13,522 | $170.1K |
| Olympiad Research12,342 sh | 12,342 | $155.3K |
| THOMPSON DAVIS11,865 sh | 11,865 | $149.3K |
| Freestone Grove Partners7,731 sh | 7,731 | $97.3K |
| MAI Capital Management2,319 sh | 2,319 | $29.2K |
| Root Financial Partners276 sh | 276 | $3.5K |
| TWIN PEAKS WEALTH ADVISORS60 sh | 60 | $755.00 |
| Wealth Preservation Advisors53 sh | 53 | $667.00 |
Source: Form 13F-HR filings on SEC EDGAR, Q2 2026. Values are as reported by each manager at quarter end. “% of portfolio” is the position’s share of the manager’s total reported 13F value for the same quarter. “New” means the manager filed a 13F for Q1 2026 without this position; a dash means no comparison is available. Where a manager’s own filing is internally inconsistent its value is withheld and it is listed last. 13F data shows reported holdings, not recommendations.