ADTRAN Holdings, Inc. - Common Stock, par value $0.01 (ADTN) Institutional Ownership

13F Institutional Holders and Ownership History from Q1 2016 to Q4 2025

Type / Class
Equity / Common Stock, par value $0.01
Symbol
ADTN on Nasdaq
Shares outstanding
80,327,250
Price per share
$8.69
All holders as of 30 Sep 2025
Q3 2025
Total 13F shares
67,395,308
Total reported value
$632,170,642
% of total 13F portfolios
0%
Share change
+7,704,252
Value change
+$73,019,738
Number of holders
218
Price from insider filings
$8.69
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Significant Owners of ADTRAN Holdings, Inc. - Common Stock, par value $0.01 (ADTN) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
VANGUARD GROUP INC 10% $62,961,070 8,166,157 The Vanguard Group 30 Jun 2025
EGORA VENTURES AG 6.7% $39,912,205 5,357,343 EGORA Ventures AG (f/k/a EGORA Holding GmbH) 14 Feb 2025
DnB Asset Management AS 4.4% $26,459,465 3,551,606 DnB Asset Management AS 31 Mar 2025
WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC 4.2% $24,989,788 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.

Top 25 Institutional Shareholders

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

Institutional Holders of ADTRAN Holdings, Inc. - Common Stock, par value $0.01 (ADTN) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2025 Q4 1,992,405 $17,314,287 +$7,394,291 $8.69 5
2025 Q3 67,395,308 $632,170,642 +$73,019,738 $9.38 218
2025 Q2 59,497,253 $533,686,663 +$9,414,162 $8.97 192
2025 Q1 58,522,511 $510,321,524 -$28,852,615 $8.72 204
2024 Q4 61,596,651 $513,094,825 +$19,034,104 $8.33 158
2024 Q3 58,965,958 $349,632,425 -$5,837,233 $5.93 149
2024 Q2 59,970,717 $315,391,980 -$19,892,974 $5.26 156
2024 Q1 63,682,349 $346,190,807 -$866,511 $5.44 167
2023 Q4 109,082 $800,662 -$177,334 $7.34 2
2023 Q3 60,130,020 $494,921,170 -$12,593,136 $8.23 160
2023 Q2 60,658,143 $638,760,046 -$30,531,564 $10.53 160
2023 Q1 63,116,392 $1,000,819,489 -$1,543,754 $15.86 170
2022 Q4 63,560,152 $1,193,507,430 +$47,493,726 $18.79 176
2022 Q3 61,102,467 $1,196,444,210 +$1,167,594,629 $19.58 177
2022 Q2 1,361,872 $23,872,835 +$23,863,685 $17.50 10
2022 Q1 521 $9,612 +$240 $18.45 1
2021 Q4 508 $11,598 +$251 $22.83 1
2021 Q3 497 $9,324 $0 $18.76 1
2021 Q2 497 $10,263 $0 $20.65 1
2021 Q1 497 $8,290 $0 $16.68 1
2020 Q4 497 $7,341 $0 $14.77 1
2020 Q3 497 $5,097 $0 $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 $0 $11.35 1
2019 Q2 1,124 $17,141 $0 $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 $0 $15.55 1
2017 Q4 1,128 $21,827 $0 $19.35 1
2017 Q3 1,128 $27,072 $0 $24.00 1
2017 Q2 1,128 $23,293 $0 $20.65 1
2017 Q1 1,128 $23,406 $0 $20.75 1
2016 Q4 1,128 $25,211 $0 $22.35 1
2016 Q3 1,128 $21,590 $0 $19.14 1
2016 Q2 1,128 $21,037 $0 $18.65 1
2016 Q1 1,128 $22,808 $0 $20.22 1