226 hedge funds and large institutions have $987M invested in Adtran in 2026 Q1 according to their latest regulatory filings, with 49 funds opening new positions, 86 increasing their positions, 64 reducing their positions, and 31 closing their positions.

New
Increased
Maintained
Reduced
Closed

more funds holding in top 10

Funds holding in top 10:

more call options, than puts

Call options by funds: $ | Put options by funds: $

more capital invested

Capital invested by funds: $ → $

more first-time investments, than exits

New positions opened: | Existing positions closed:

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%)

6% more funds holding

Funds holding: 213226 (+13)

Holders
226
Holders Change
Holders Change %
% of All Funds
Holding in Top 10
5
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
Increased
Reduced
Closed
Calls
$1.78M
Puts
$943K
Net Calls
Net Calls Change
Name Holding Trade Value Shares
Change
Change in
Stake
SFI
151
Susquehanna Fundamental Investments
Pennsylvania
$257K
HT
152
Headlands Technologies
Illinois
$257K
Manulife (Manufacturers Life Insurance)
153
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$254K
ASRS
154
Arizona State Retirement System
Arizona
$249K
Cerity Partners
155
Cerity Partners
New York
$249K
Citigroup
156
Citigroup
New York
$232K
FRM
157
Fox Run Management
Connecticut
$221K
IIM
158
INTECH Investment Management
Florida
$219K
VIA
159
Vanguard Investments Australia
Australia
$216K
Stifel Financial
160
Stifel Financial
Missouri
$214K
KK
161
KLP Kapitalforvaltning
Norway
$210K
ET
162
Entropy Technologies
New York
$199K
Canada Pension Plan Investment Board
163
Canada Pension Plan Investment Board
Ontario, Canada
$195K
PCM
164
Prelude Capital Management
New York
$194K
Pictet Asset Management
165
Pictet Asset Management
Switzerland
$190K
WG
166
Winton Group
United Kingdom
$189K
HIS
167
Harvest Investment Services
Illinois
$188K
DS
168
DRW Securities
Illinois
$184K
Wealth Enhancement Advisory Services
169
Wealth Enhancement Advisory Services
Minnesota
$183K
Financial Engines Advisors
170
Financial Engines Advisors
California
$183K
Neuberger Berman Group
171
Neuberger Berman Group
New York
$175K
CCM
172
Cinctive Capital Management
New York
$170K
LPL Financial
173
LPL Financial
California
$160K
IMC Chicago
174
IMC Chicago
Illinois
$156K
OR
175
Olympiad Research
Connecticut
$155K