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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: 25 (+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: 213227 (+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
Name Holding Trade Value Shares
Change
Change in
Stake
SFI
151
Susquehanna Fundamental Investments
Pennsylvania
$257K +$207K +20,443 New
HT
152
Headlands Technologies
Illinois
$257K +$207K +20,405 New
Manulife (Manufacturers Life Insurance)
153
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$254K -$23.8K -2,353 -10%
ASRS
154
Arizona State Retirement System
Arizona
$249K -$2.23K -220 -1%
Cerity Partners
155
Cerity Partners
New York
$249K +$201K +19,791 New
Citigroup
156
Citigroup
New York
$232K +$48.7K +4,803 +35%
FRM
157
Fox Run Management
Connecticut
$221K +$52.5K +5,185 +40%
IIM
158
INTECH Investment Management
Florida
$219K -$63.8K -6,297 -27%
VIA
159
Vanguard Investments Australia
Australia
$216K +$174K +17,171 New
Stifel Financial
160
Stifel Financial
Missouri
$214K -$15.2K -1,500 -8%
KK
161
KLP Kapitalforvaltning
Norway
$210K +$21.3K +2,100 +14%
ET
162
Entropy Technologies
New York
$199K +$55.8K +5,510 +54%
Canada Pension Plan Investment Board
163
Canada Pension Plan Investment Board
Ontario, Canada
$195K
PCM
164
Prelude Capital Management
New York
$194K +$17.6K +1,738 +13%
Pictet Asset Management
165
Pictet Asset Management
Switzerland
$190K
WG
166
Winton Group
United Kingdom
$189K +$152K +15,000 New
HIS
167
Harvest Investment Services
Illinois
$188K -$780 -77 -0.5%
DS
168
DRW Securities
Illinois
$184K +$148K +14,600 New
Wealth Enhancement Advisory Services
169
Wealth Enhancement Advisory Services
Minnesota
$183K +$144K +14,221 New
Financial Engines Advisors
170
Financial Engines Advisors
California
$183K +$147K +14,518 New
Neuberger Berman Group
171
Neuberger Berman Group
New York
$175K +$15.4K +1,517 +12%
CCM
172
Cinctive Capital Management
New York
$170K
LPL Financial
173
LPL Financial
California
$160K -$4.09K -404 -3%
IMC Chicago
174
IMC Chicago
Illinois
$156K +$126K +12,429 New
OR
175
Olympiad Research
Connecticut
$155K +$125K +12,342 New