Latest Period
Q1 2026
Security Snapshot
ADTRAN Holdings, Inc. - Common Stock (ADTN) Institutional Ownership
CUSIP: 00486H105
13F Institutional Holders and Ownership History from Q1 2016 to Q1 2026
Institutions Reporting
226
Shares (Excl. Options)
78,520,175
Price
$12.58
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- Security type / class
- Equity / Common Stock
- Symbol
- ADTN on Nasdaq
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 78,520,175
- Total 13F value
- $987,201,915
- Portfolio coverage rank
- 0%
- Share change
- +7,754,435
- Value change
- +$110,583,510
- Number of holders
- 226
- Shares outstanding
- 80,743,549
- SEC-reported price per share
- $15.67
- Insider filing price
- $15.67
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
3 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- ADTN - ADTRAN Holdings, Inc. - Common Stock is tracked under CUSIP 00486H105.
- 226 institutions reported positions in Q1 2026.
- 5 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 214 to 226 between Q4 2025 and Q1 2026.
- SEC-reported value moved from $611,538,309 to $987,201,915.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 226 institutions filings for Q1 2026.
Security key
00486H105
Latest holder period
Q1 2026
13F holders
226
13D/G owners
5
CIK / CUSIP context first
Open Q1 2026 holders
ADTN full holder history
ADTRAN Holdings, Inc. SEC filings
ADTRAN Holdings, Inc. company facts
ADTRAN Holdings, Inc. insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP 00486H105:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
5
Security
ADTN
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| VANGUARD PORTFOLIO MANAGEMENT LLC | 6% | $61,249,957 | 4,868,836 | Vanguard Portfolio Management | 31 Mar 2026 | |||
| EGORA VENTURES AG | 5% | -25% | $40,338,466 | -$13,609,978 | 4,005,806 | -25% | EGORA Ventures AG | 02 Feb 2026 |
| 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 Mar 2026, 226 institutional investors reported holding 78,520,175 shares of ADTRAN Holdings, Inc. - Common Stock (ADTN). This represents 97% of the company’s total 80,743,549 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
63%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9.7% | 7,840,254 | -3.5% | 0% | $98,630,393 |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 5.9% | 4,771,452 | 0% | 0% | $60,024,866 |
| VANGUARD CAPITAL MANAGEMENT LLC | 4.2% | 3,426,230 | 0% | 0% | $43,101,973 |
| ROYCE & ASSOCIATES LP | 3.9% | 3,127,403 | +20% | 0.39% | $39,342,730 |
| DNB Asset Management AS | 3.9% | 3,123,679 | 0% | 0.14% | $39,295,882 |
| STATE STREET CORP | 2.9% | 2,350,737 | +18% | 0% | $29,572,271 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 2.5% | 1,989,530 | -20% | 0.08% | $25,028,287 |
| MILLENNIUM MANAGEMENT LLC | 2.3% | 1,896,411 | -30% | 0.02% | $23,856,850 |
| MORGAN STANLEY | 2.3% | 1,832,872 | +36% | 0% | $23,057,535 |
| GEODE CAPITAL MANAGEMENT, LLC | 2.3% | 1,819,123 | +3% | 0% | $22,889,544 |
| Divisar Capital Management LLC | 2.2% | 1,769,439 | -41% | 5.7% | $22,259,543 |
| JPMORGAN CHASE & CO | 1.9% | 1,518,697 | +249% | 0% | $18,512,917 |
| First Eagle Investment Management, LLC | 1.7% | 1,368,707 | +11% | 0.03% | $17,218,334 |
| DIMENSIONAL FUND ADVISORS LP | 1.7% | 1,337,028 | +51% | 0% | $16,817,145 |
| SG Americas Securities, LLC | 1.6% | 1,316,049 | +54% | 0.02% | $16,556,000 |
| NEEDHAM INVESTMENT MANAGEMENT LLC | 1.5% | 1,228,500 | -15% | 0.79% | $15,454,531 |
| Shannon River Fund Management LLC | 1.5% | 1,219,976 | 2.9% | $15,347,298 | |
| D. E. Shaw & Co., Inc. | 1.5% | 1,218,969 | +1.7% | 0.01% | $15,334,630 |
| Boston Partners | 1.5% | 1,181,314 | 0.02% | $14,910,480 | |
| TWO SIGMA INVESTMENTS, LP | 1.4% | 1,123,524 | +1493% | 0.01% | $14,133,932 |
| SEI INVESTMENTS CO | 1.4% | 1,105,110 | +162% | 0.01% | $13,902,293 |
| Tieton Capital Management, LLC | 1.3% | 1,035,167 | +4.7% | 4.4% | $13,022,000 |
| Invesco Ltd. | 1.2% | 990,994 | +302% | 0% | $12,466,705 |
| GOLDMAN SACHS GROUP INC | 1.2% | 970,707 | +86% | 0% | $12,211,498 |
| BARCLAYS PLC | 1.1% | 927,775 | -18% | 0% | $11,671,409 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
40
Latest
Q1 2026
Rows shown
1-25 of 40
| Period | 13F Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 78,520,175 | $987,201,915 | +$110,583,510 | $12.58 | 226 |
| 2025 Q4 | 70,352,679 | $611,538,309 | +$27,067,906 | $8.69 | 214 |
| 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 | $15.67 | 0 |