Adtran
ADTN
213 hedge funds and large institutions have $612M invested in Adtran in 2025 Q4 according to their latest regulatory filings, with 26 funds opening new positions, 71 increasing their positions, 82 reducing their positions, and 31 closing their positions.
488% more call options, than puts
Call options by funds: $1.99M | Put options by funds: $338K
3.41% more ownership
Funds ownership: 84.4% → 87.81% (+3.4%)
4% less funds holding
Funds holding: 221 → 213 (-8)
7% less capital invested
Capital invested by funds: $659M → $612M (-$47.2M)
13% less repeat investments, than reductions
Existing positions increased: 71 | Existing positions reduced: 82
16% less first-time investments, than exits
New positions opened: 26 | Existing positions closed: 31
33% less funds holding in top 10
Funds holding in top 10: 3 → 2 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Millennium Management
New York
|
+$18.4M |
| 2 |
PCMI
Paradigm Capital Management Inc
Albany,
New York
|
+$8.24M |
| 3 |
D.E. Shaw & Co
New York
|
+$7.58M |
| 4 |
Nomura Holdings
Tokyo,
Japan
|
+$5.91M |
| 5 |
SG Americas Securities
New York
|
+$5.69M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Focus Partners Wealth
Boston,
Massachusetts
|
-$26.5M |
| 2 |
Citadel Advisors
Miami,
Florida
|
-$9.72M |
| 3 |
SSA
Schonfeld Strategic Advisors
New York
|
-$7.38M |
| 4 |
Alyeska Investment Group
Chicago,
Illinois
|
-$4.67M |
| 5 |
GIM
Granahan Investment Management
Waltham,
Massachusetts
|
-$4.58M |
ADTN Hedge Fund Activity: Q4 2025 in Review
213 of the 8,266 institutional investors tracked by Wall St. Rank reported a position in Adtran (ADTN) for Q4 2025, worth a combined $612M — down 7.2% from $659M a quarter earlier.
Sellers outnumbered buyers: 31 funds closed out of ADTN and 26 opened new positions — a net loss of 5 holders — while 82 trimmed existing stakes and 71 added.
The largest buyer was Millennium Management, adding an estimated $18.4M. The largest seller was Focus Partners Wealth, exiting entirely with an estimated $26.5M sold.
- 213 institutional investors held Adtran (ADTN) as of Q4 2025, down from 221 in Q3 2025.
- Funds reported $612M of Adtran stock for Q4 2025, down 7.2% quarter-over-quarter.
- 26 funds opened new Adtran positions in Q4 2025 and 31 closed out, a net change of -5 holders.
- The largest Adtran buyer in Q4 2025 was Millennium Management, an estimated $18.4M added.
- The largest Adtran seller in Q4 2025 was Focus Partners Wealth, an estimated $26.5M sold.
Based on aggregated 13F filings for Q4 2025.