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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
Walleye Trading
76
Walleye Trading
New York
$1.95M +$1.41M +138,896 +868%
Acadian Asset Management
77
Acadian Asset Management
Massachusetts
$1.85M +$594K +58,652 +66%
BHCM
78
Brevan Howard Capital Management
Jersey
$1.81M +$235K +23,200 +19%
Swiss National Bank
79
Swiss National Bank
Switzerland
$1.79M +$29.4K +2,900 +2%
OQS
80
Occudo Quantitative Strategies
Florida
$1.79M +$1.02M +100,956 New
GC
81
Globeflex Capital
California
$1.67M +$260K +25,662 +24%
Lido Advisors
82
Lido Advisors
California
$1.63M +$391K +38,552 +42%
LCM
83
Landscape Capital Management
New Jersey
$1.61M +$1.18M +116,421 +1,005%
Victory Capital Management
84
Victory Capital Management
Texas
$1.55M -$14.2K -1,400 -1%
LCM
85
Legato Capital Management
California
$1.55M +$1.25M +123,100 New
BNP Paribas Asset Management
86
BNP Paribas Asset Management
France
$1.55M +$1.24M +122,026 +12,276%
T. Rowe Price Associates
87
T. Rowe Price Associates
Maryland
$1.54M +$142K +13,980 +13%
DSCM
88
Divisadero Street Capital Management
Florida
$1.53M -$58.4K -5,758 -5%
AllianceBernstein
89
AllianceBernstein
Tennessee
$1.46M -$1.3M -128,311 -43%
OAM
90
OP Asset Management
$1.45M +$1.17M +115,374 New
Susquehanna International Group
91
Susquehanna International Group
Pennsylvania
$1.43M -$31.1K -3,064 -3%
JF
92
Jump Financial
Illinois
$1.33M +$277K +27,311 +35%
Jane Street
93
Jane Street
New York
$1.28M -$2.46M -242,458 -70%
Legal & General Group
94
Legal & General Group
United Kingdom
$1.26M -$128K -12,640 -11%
HSBC Holdings
95
HSBC Holdings
United Kingdom
$1.23M +$192K +18,947 +24%
Simplex Trading
96
Simplex Trading
Illinois
$1.23M +$839K +82,738 +557%
RhumbLine Advisers
97
RhumbLine Advisers
Massachusetts
$1.17M -$23.9K -2,358 -2%
NIMC
98
Nierenberg Investment Management Company
Washington
$1.17M
HighTower Advisors
99
HighTower Advisors
Illinois
$1.17M +$944K +93,101 New
XT
100
XTX Topco
Cayman Islands
$1.13M +$235K +23,145 +35%