| 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 31 Dec 2025, 211 institutional investors reported holding 70,279,409 shares of ADTRAN Holdings, Inc. - Common Stock, par value $0.01 (ADTN). This represents 87% 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 63% 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% | 8,188,496 | -2.3% | 0% | $71,158,031 |
| BlackRock, Inc. | 10% | 8,125,259 | -1.8% | 0% | $70,608,500 |
| DNB Asset Management AS | 3.9% | 3,123,679 | +7.6% | 0.09% | $27,144,771 |
| Divisar Capital Management LLC | 3.7% | 2,986,302 | -7.1% | 7.3% | $25,950,964 |
| MILLENNIUM MANAGEMENT LLC | 3.4% | 2,694,800 | +371% | 0.02% | $23,417,812 |
| ROYCE & ASSOCIATES LP | 3.2% | 2,597,013 | +7.7% | 0.23% | $22,568,043 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 3.1% | 2,478,621 | -9.4% | 0.06% | $21,539,216 |
| STATE STREET CORP | 2.5% | 1,985,890 | +4.5% | 0% | $17,257,384 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.2% | 1,766,102 | -0.23% | 0% | $15,350,058 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 1.8% | 1,447,500 | +23% | 0.79% | $12,578,775 |
| MORGAN STANLEY | 1.7% | 1,343,546 | +69% | 0% | $11,675,424 |
| First Eagle Investment Management, LLC | 1.5% | 1,235,207 | +2.2% | 0.02% | $10,733,949 |
| D. E. Shaw & Co., Inc. | 1.5% | 1,198,773 | +269% | 0.01% | $10,417,337 |
| PARADIGM CAPITAL MANAGEMENT INC/NY | 1.4% | 1,129,909 | +528% | 0.41% | $9,818,909 |
| Assenagon Asset Management S.A. | 1.4% | 1,129,047 | +21% | 0.01% | $9,811,418 |
| BARCLAYS PLC | 1.4% | 1,125,703 | +40% | 0% | $9,782,359 |
| Ophir Asset Management Pty Ltd | 1.3% | 1,069,420 | -11% | 1% | $9,293,260 |
| Tieton Capital Management, LLC | 1.2% | 988,379 | -0.08% | 2.9% | $8,589,000 |
| TUDOR INVESTMENT CORP ET AL | 1.2% | 947,508 | +5.6% | 0.05% | $8,233,845 |
| DIMENSIONAL FUND ADVISORS LP | 1.1% | 888,180 | +106% | 0% | $7,719,379 |
| FEDERATED HERMES, INC. | 1.1% | 866,431 | +12% | 0.01% | $7,529,285 |
| SG Americas Securities, LLC | 1.1% | 857,044 | +324% | 0.01% | $7,448,000 |
| Squarepoint Ops LLC | 0.99% | 797,440 | +17% | 0.01% | $6,929,754 |
| Kovack Advisors, Inc. | 0.94% | 753,550 | +6.4% | 0.31% | $6,548,349 |
| WESTERLY CAPITAL MANAGEMENT, LLC | 0.87% | 700,000 | -24% | 1.8% | $6,083,000 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 70,279,409 | $610,897,669 | +$27,120,503 | $8.69 | 211 |
| 2025 Q3 | 67,395,311 | $632,170,670 | +$73,019,753 | $9.38 | 219 |
| 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 |