| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD GROUP INC | 10% | $63,859,348 | 8,166,157 | The Vanguard Group | 30 Jun 2025 | |||
| EGORA VENTURES AG | 6.7% | $41,305,115 | 5,357,343 | EGORA Ventures AG (f/k/a EGORA Holding GmbH) | 14 Feb 2025 | |||
| DnB Asset Management AS | 4.4% | $27,382,882 | 3,551,606 | DnB Asset Management AS | 31 Mar 2025 | |||
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 4.2% | $25,861,915 | 3,354,334 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 31 Mar 2025 | |||
| Divisar Capital Management LLC | 4% | -26% | $30,138,784 | -$9,532,631 | 3,213,090 | -24% | Divisar Capital Management LLC | 30 Sep 2025 |
As of 30 Sep 2025, 218 institutional investors reported holding 67,395,308 shares of ADTRAN Holdings, Inc. - Common Stock, par value $0.01 (ADTN). This represents 84% of the company’s total 80,327,250 outstanding shares.
The largest institutional shareholders of ADTRAN Holdings, Inc. - Common Stock, par value $0.01 (ADTN) together control 59% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| VANGUARD GROUP INC | 10% | 8,383,305 | +2.7% | 0% | $78,635,401 |
| BlackRock, Inc. | 10% | 8,273,324 | +2.7% | 0% | $77,603,780 |
| Divisar Capital Management LLC | 4% | 3,213,090 | -24% | 8.2% | $30,138,784 |
| DNB ASSET MANAGEMENT AS | 3.6% | 2,903,869 | +6.4% | 0.1% | $27,238,291 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 3.4% | 2,736,430 | -5.7% | 0.07% | $25,667,713 |
| ROYCE & ASSOCIATES LP | 3% | 2,410,775 | +15% | 0.23% | $22,613,069 |
| STATE STREET CORP | 2.4% | 1,899,508 | +2.4% | 0% | $17,817,385 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2% | 1,770,186 | +1.2% | 0% | $16,607,336 |
| CITADEL ADVISORS LLC | 1.5% | 1,218,868 | +201% | 0.01% | $11,432,982 |
| First Eagle Investment Management, LLC | 1.5% | 1,209,207 | +6.7% | 0.02% | $11,342,362 |
| Ophir Asset Management Pty Ltd | 1.5% | 1,204,749 | 1.4% | $11,300,546 | |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 1.5% | 1,175,000 | +4.9% | 0.77% | $11,021,500 |
| Alyeska Investment Group, L.P. | 1.3% | 1,084,029 | 0.03% | $10,168,192 | |
| Tieton Capital Management, LLC | 1.2% | 989,124 | +3.8% | 3.2% | $9,278,000 |
| Assenagon Asset Management S.A. | 1.2% | 932,680 | +692% | 0.01% | $8,748,538 |
| WESTERLY CAPITAL MANAGEMENT, LLC | 1.1% | 920,220 | -5.6% | 2.7% | $8,631,664 |
| TUDOR INVESTMENT CORP ET AL | 1.1% | 897,115 | +434% | 0.05% | $8,414,939 |
| JPMORGAN CHASE & CO | 1% | 813,363 | +78% | 0% | $7,629,344 |
| BARCLAYS PLC | 1% | 806,339 | +36% | 0% | $7,563,459 |
| MORGAN STANLEY | 0.99% | 793,537 | -16% | 0% | $7,443,388 |
| Schonfeld Strategic Advisors LLC | 0.98% | 786,823 | +5810% | 0.05% | $7,380,396 |
| FEDERATED HERMES, INC. | 0.96% | 772,854 | +0.67% | 0.01% | $7,249,370 |
| Kovack Advisors, Inc. | 0.88% | 707,900 | -0.88% | 0.63% | $6,640,102 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 0.86% | 688,439 | +0.93% | 0% | $6,457,558 |
| Squarepoint Ops LLC | 0.85% | 682,059 | +8.1% | 0.01% | $6,397,713 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 2,064,489 | $17,940,698 | +$7,309,781 | $8.69 | 8 |
| 2025 Q3 | 67,395,308 | $632,170,642 | +$73,019,725 | $9.38 | 218 |
| 2025 Q2 | 59,497,253 | $533,686,663 | +$9,414,153 | $8.97 | 192 |
| 2025 Q1 | 58,522,511 | $510,321,126 | -$28,852,601 | $8.72 | 204 |
| 2024 Q4 | 61,596,351 | $513,093,123 | +$19,032,311 | $8.33 | 157 |
| 2024 Q3 | 58,965,958 | $349,632,043 | -$5,837,235 | $5.93 | 149 |
| 2024 Q2 | 59,970,719 | $315,391,967 | -$19,892,933 | $5.26 | 156 |
| 2024 Q1 | 63,682,349 | $346,190,573 | -$270,296 | $5.44 | 166 |
| 2023 Q4 | 62,894,503 | $461,974,644 | -$8,184,997 | $7.34 | 168 |
| 2023 Q3 | 63,552,312 | $523,087,079 | -$14,687,244 | $8.23 | 164 |
| 2023 Q2 | 64,342,704 | $677,558,122 | -$26,182,923 | $10.53 | 159 |
| 2023 Q1 | 63,196,076 | $1,002,082,503 | -$1,663,078 | $15.86 | 172 |
| 2022 Q4 | 63,601,968 | $1,194,292,898 | +$47,348,414 | $18.79 | 177 |
| 2022 Q3 | 61,173,817 | $1,197,841,121 | +$1,169,038,375 | $19.58 | 180 |
| 2022 Q2 | 1,377,834 | $24,255,835 | +$24,246,702 | $17.53 | 10 |
| 2022 Q1 | 521 | $9,612 | +$240 | $18.45 | 1 |
| 2021 Q4 | 508 | $11,598 | +$251 | $22.83 | 1 |
| 2021 Q3 | 497 | $9,324 | $18.76 | 1 | |
| 2021 Q2 | 497 | $10,263 | $20.65 | 1 | |
| 2021 Q1 | 497 | $8,290 | $16.68 | 1 | |
| 2020 Q4 | 497 | $7,341 | $14.77 | 1 | |
| 2020 Q3 | 497 | $5,097 | $10.26 | 1 | |
| 2020 Q2 | 497 | $5,432 | +$5,432 | $10.93 | 1 |
| 2019 Q4 | 0 | $0 | -$12,752 | $8.69 | 0 |
| 2019 Q3 | 1,124 | $12,752 | $11.35 | 1 | |
| 2019 Q2 | 1,124 | $17,141 | $15.25 | 1 | |
| 2019 Q1 | 1,124 | $15,399 | +$15,399 | $13.70 | 1 |
| 2018 Q4 | 0 | $0 | -$14,844 | $8.69 | 0 |
| 2018 Q3 | 841 | $14,844 | +$6,937 | $17.65 | 1 |
| 2018 Q2 | 448 | $6,653 | -$10,098 | $14.85 | 1 |
| 2018 Q1 | 1,128 | $17,540 | $15.55 | 1 | |
| 2017 Q4 | 1,128 | $21,827 | $19.35 | 1 | |
| 2017 Q3 | 1,128 | $27,072 | $24.00 | 1 | |
| 2017 Q2 | 1,128 | $23,293 | $20.65 | 1 | |
| 2017 Q1 | 1,128 | $23,406 | $20.75 | 1 | |
| 2016 Q4 | 1,128 | $25,211 | $22.35 | 1 | |
| 2016 Q3 | 1,128 | $21,590 | $19.14 | 1 | |
| 2016 Q2 | 1,128 | $21,037 | $18.65 | 1 | |
| 2016 Q1 | 1,128 | $22,808 | $20.22 | 1 |