Security key
00486H105
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 70,352,679
- Total 13F value
- $611,538,309
- Share change
- +3,321,983
- Put/Call ratio
- 13%
- SEC-reported price per share
- $8.69
- Number of holders
- 214
- Value change
- +$27,067,906
- Number of buys
- 95
- Number of sells
- 112
- Shares outstanding
- 80,743,549
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q4 2025
Institutions
214
Top holders
10
ADTN full security history
Ownership snapshot
Full 13F holder table
Newer quarter: Q1 2026
Previous quarter: Q3 2025
ADTRAN Holdings, Inc. SEC filings
ADTRAN Holdings, Inc. company facts
Broader feeds
Reporting periods
Holder history for CUSIP 00486H105
Recent filing periods:
Ownership snapshot
Top reported holders of ADTN - ADTRAN Holdings, Inc. - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
DnB Asset Management AS
Disclosed value leader
VANGUARD GROUP INC
Comparable rows
15/15
Latest evidence
31 Dec 2025
13D/G
13F
3/4/5
Lead comparable stake: 4.4%
13D/G row: DnB Asset Management AS
Showing 1-6 of 15 holder rows.
Quick read
DnB Asset Management AS leads the comparable SEC ownership view at 4.4%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens DnB Asset Management AS's linked filing trail.
Comparable ownership
Top 5
DnB Asset Management AS
4.4%
WILLIAM BLAIR INVESTMENT MANAGEME...
4.2%
Divisar Capital Management LLC
4%
Nair Balan
0.16%
H. Fenwick Huss
0.13%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| DnB Asset Management AS |
13D/G
13F
Company
|
4.4%
|
$27,382,882
3,551,606 shares
|
$0 | 31 Mar 2025 |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC |
13D/G
13F
Company
|
4.2%
|
$25,861,915
3,354,334 shares
|
$0 | 31 Mar 2025 |
| Divisar Capital Management LLC |
13D/G
13F
Company
|
4%
|
$30,138,784
3,213,090 shares
|
-$9,532,631 | 30 Sep 2025 |
| Nair Balan |
3/4/5
Director
|
0.16%
|
$1,102,028
125,373 shares
|
— | 31 Dec 2025 |
| H. Fenwick Huss |
3/4/5
Director
|
0.13%
|
$945,804
107,600 shares
|
— | 31 Dec 2025 |
| Kathryn A. Walker |
3/4/5
Director
|
0.12%
|
$867,247
98,663 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q4 2025
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
214
Shares
70,352,679
Rows available
214
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q4 2025 vs Q3 2025 Across Filers
Q3 2025 holders
219
Q4 2025 holders
214
Holder diff
-5
| Investor | Q3 2025 Shares | Q4 2025 Shares | Share Diff | Share Chg % | Q3 2025 value | Q4 2025 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend