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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.

New
Increased
Maintained
Reduced
Closed

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: 221213 (-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: 32 (-1)

Holders
213
Holders Change
-8
Holders Change %
-3.62%
% of All Funds
2.59%
Holding in Top 10
2
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-33.33%
% of All Funds
0.02%
New
26
Increased
71
Reduced
82
Closed
31
Calls
$1.99M
Puts
$338K
Net Calls
+$1.65M
Net Calls Change
-$2.02M
Name Holding Trade Value Shares
Change
Change in
Stake
Vanguard Group
1
Vanguard Group
Pennsylvania
$71.2M -$1.69M -194,809 -2%
BlackRock
2
BlackRock
New York
$70.6M -$1.29M -148,065 -2%
DnB Asset Management
3
DnB Asset Management
Norway
$27.1M +$1.91M +219,810 +8%
DCM
4
Divisar Capital Management
California
$26M -$1.97M -226,788 -7%
Millennium Management
5
Millennium Management
New York
$23.4M +$18.4M +2,122,844 +371%
RA
6
Royce & Associates
New York
$22.6M +$1.62M +186,238 +8%
William Blair Investment Management
7
William Blair Investment Management
Illinois
$21.5M -$2.24M -257,809 -9%
State Street
8
State Street
Massachusetts
$17.3M +$750K +86,382 +5%
Geode Capital Management
9
Geode Capital Management
Massachusetts
$15.4M -$35.4K -4,084 -0.2%
NIM
10
Needham Investment Management
New York
$12.6M +$2.37M +272,500 +23%
Morgan Stanley
11
Morgan Stanley
New York
$11.7M +$4.77M +550,010 +69%
First Eagle Investment Management
12
First Eagle Investment Management
New York
$10.7M +$226K +26,000 +2%
D.E. Shaw & Co
13
D.E. Shaw & Co
New York
$10.4M +$7.58M +873,904 +269%
PCMI
14
Paradigm Capital Management Inc
New York
$9.82M +$8.24M +949,909 +528%
Assenagon Asset Management
15
Assenagon Asset Management
Luxembourg
$9.81M +$1.7M +196,367 +21%
Barclays
16
Barclays
United Kingdom
$9.78M +$2.77M +319,364 +40%
OAM
17
Ophir Asset Management
Australia
$9.29M -$1.17M -135,329 -11%
TCM
18
Tieton Capital Management
Washington
$8.59M -$6.47K -745 -0.1%
Tudor Investment Corp
19
Tudor Investment Corp
Connecticut
$8.23M +$437K +50,393 +6%
Dimensional Fund Advisors
20
Dimensional Fund Advisors
Texas
$7.72M +$3.97M +457,143 +106%
Federated Hermes
21
Federated Hermes
Pennsylvania
$7.53M +$812K +93,577 +12%
SG Americas Securities
22
SG Americas Securities
New York
$7.45M +$5.69M +655,058 +324%
Squarepoint
23
Squarepoint
New York
$6.93M +$1M +115,381 +17%
KA
24
Kovack Advisors
Florida
$6.55M +$396K +45,650 +6%
WCM
25
Westerly Capital Management
California
$6.08M -$1.91M -220,220 -24%