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Adtran
ADTN

227 hedge funds and large institutions have $987M invested in Adtran in 2026 Q1 according to their latest regulatory filings, with 50 funds opening new positions, 86 increasing their positions, 64 reducing their positions, and 31 closing their positions.

New
Increased
Maintained
Reduced
Closed

150% more funds holding in top 10

Funds holding in top 10: 2 → 5 (+3)

89% more call options, than puts

Call options by funds: $1.78M | Put options by funds: $943K

61% more capital invested

Capital invested by funds: $612M → $987M (+$376M)

61% more first-time investments, than exits

New positions opened: 50 | Existing positions closed: 31

34% more repeat investments, than reductions

Existing positions increased: 86 | Existing positions reduced: 64

9.53% more ownership

Funds ownership: 87.81% → 97.35% (+9.5%)

7% more funds holding

Funds holding: 213 → 227 (+14)

Holders
227
Holders Change
+14
Holders Change %
+6.57%
% of All Funds
2.8%
Holding in Top 10
5
Holding in Top 10 Change
+3
Holding in Top 10 Change %
+150%
% of All Funds
0.06%
New
50
Increased
86
Reduced
64
Closed
31
Calls
$1.78M
Puts
$943K
Net Calls
+$842K
Net Calls Change
-$807K

Top Buyers

1
SRFM
Shannon River Fund Management
New York
+$12.4M
2
Boston Partners
Boston Partners
Massachusetts
+$12M
3
JP Morgan Chase
JP Morgan Chase
New York
+$11M
4
Two Sigma Investments
Two Sigma Investments
New York
+$10.7M
5
Marshall Wace
Marshall Wace
United Kingdom
+$9.04M

Top Sellers

1
DCM
Divisar Capital Management
California
-$12.3M
2
OAM
Ophir Asset Management
Australia
-$9.29M
3
Millennium Management
Millennium Management
New York
-$8.09M
4
Assenagon Asset Management
Assenagon Asset Management
Luxembourg
-$6.8M
5
William Blair Investment Management
William Blair Investment Management
Illinois
-$4.96M
Name Holding Trade Value Shares
Change 		Change in
Stake
PCM
251
Polymer Capital Management
New York
– -$90.1K -10,363 Closed
A
252
AlphaQuest
New York
– -$89.3K -10,274 Closed
New York State Teachers Retirement System (NYSTRS)
253
New York State Teachers Retirement System (NYSTRS)
New York
– -$58K -6,721 Closed
KAS
254
Kestra Advisory Services
Texas
– -$36.4K -4,192 Closed
AB
255
Amalgamated Bank
New York
– -$20K -2,337 Closed
Ohio Public Employees Retirement System (OPERS)
256
Ohio Public Employees Retirement System (OPERS)
Ohio
– -$14.8K -1,698 Closed
HAP
257
Harbor Asset Planning
Massachusetts
– -$2.52K -290 Closed
SPIA
258
Steward Partners Investment Advisory
New York
– -$1.43K -164 Closed
7 8 9 10
11