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Anterix
ATEX

111 hedge funds and large institutions have $379M invested in Anterix in 2025 Q3 according to their latest regulatory filings, with 25 funds opening new positions, 32 increasing their positions, 40 reducing their positions, and 25 closing their positions.

New
Increased
Maintained
Reduced
Closed

0% more funds holding

Funds holding: 111 → 111 (0)

0% more first-time investments, than exits

New positions opened: 25 | Existing positions closed: 25

4.66% less ownership

Funds ownership: 89.87% → 85.21% (-4.7%)

12% less capital invested

Capital invested by funds: $431M → $379M (-$52.1M)

20% less repeat investments, than reductions

Existing positions increased: 32 | Existing positions reduced: 40

25% less funds holding in top 10

Funds holding in top 10: 4 → 3 (-1)

82% less call options, than puts

Call options by funds: $543K | Put options by funds: $3.04M

Holders
111
Holders Change
–
Holders Change %
0%
% of All Funds
1.46%
Holding in Top 10
3
Holding in Top 10 Change
-1
Holding in Top 10 Change %
-25%
% of All Funds
0.04%
New
25
Increased
32
Reduced
40
Closed
25
Calls
$543K
Puts
$3.04M
Net Calls
-$2.49M
Net Calls Change
-$7.45M

Top Buyers

Rank Fund Capital Flow
1
GF
Gabelli Funds
New York
+$2.2M
2
Marshall Wace
Marshall Wace
United Kingdom
+$2.19M
3
SS
SBI Securities
Japan
+$1.68M
4
Goldman Sachs
Goldman Sachs
New York
+$1.67M
5
HF
HRT Financial
New York
+$1.39M

Top Sellers

Rank Fund Capital Flow
1
ClearBridge Investments
ClearBridge Investments
New York
-$5.22M
2
N
Nuveen
North Carolina
-$3.9M
3
Citadel Advisors
Citadel Advisors
Florida
-$3.63M
4
DCM
DG Capital Management
New York
-$2.54M
5
BlackRock
BlackRock
New York
-$2.44M
Name Holding Trade Value Shares
Change 		Change in
Stake
KMC
26
Kirr Marbach & Co
Indiana
$2.08M +$2.29K +102 +0.1%
Balyasny Asset Management
27
Balyasny Asset Management
Illinois
$2M – – –
Man Group
28
Man Group
United Kingdom
$1.63M +$441K +19,650 +35%
Morgan Stanley
29
Morgan Stanley
New York
$1.56M -$2.39M -106,429 -60%
HF
30
HRT Financial
New York
$1.33M +$1.39M +62,133 New
GCP
31
GSA Capital Partners
United Kingdom
$1.28M +$1.01M +45,200 +313%
TA
32
Teton Advisors
New York
$1.25M +$179K +8,000 +16%
GCIA
33
Gabelli & Co Investment Advisers
New York
$1.12M +$804K +35,850 +219%
SSA
34
Schonfeld Strategic Advisors
New York
$1.06M -$4.84K -216 -0.4%
UBS Group
35
UBS Group
Switzerland
$979K -$173K -7,726 -14%
Creative Planning
36
Creative Planning
Kansas
$938K +$980K +43,694 New
Jane Street
37
Jane Street
New York
$908K +$948K +42,283 New
TI
38
Trexquant Investment
Connecticut
$858K -$2.04K -91 -0.2%
Bank of New York Mellon
39
Bank of New York Mellon
New York
$850K +$39.1K +1,744 +5%
Millennium Management
40
Millennium Management
New York
$754K -$503K -22,453 -39%
YIH
41
Y-Intercept (HK)
Hong Kong
$674K -$684K -30,512 -49%
AI
42
Atom Investors
Texas
$601K +$628K +27,988 New
PCP
43
Proficio Capital Partners
Massachusetts
$587K +$613K +27,340 New
SIM
44
Sandia Investment Management
Massachusetts
$587K +$613K +27,340 New
EGM
45
Engineers Gate Manager
New York
$581K +$49K +2,183 +9%
N
46
Nuveen
North Carolina
$488K -$3.9M -173,985 -88%
CCIA
47
Campbell & Co Investment Adviser
Maryland
$447K +$184K +8,191 +65%
Royal Bank of Canada
48
Royal Bank of Canada
Ontario, Canada
$438K +$52.3K +2,334 +13%
Squarepoint
49
Squarepoint
New York
$418K -$6.14K -274 -1%
AQR Capital Management
50
AQR Capital Management
Connecticut
$418K +$436K +19,459 New
1
2
3 4 5

ATEX Hedge Fund Activity: Q3 2025 in Review

111 of the 7,621 institutional investors tracked by Wall St. Rank reported a position in Anterix (ATEX) for Q3 2025, worth a combined $379M — down 12% from $431M a quarter earlier.

Fund positioning in ATEX was balanced in Q3 2025: 25 funds opened new positions, 25 closed out, 32 added to existing stakes and 40 trimmed.

The largest buyer was Gabelli Funds, adding an estimated $2.2M. The largest seller was ClearBridge Investments, exiting entirely with an estimated $5.22M sold.

  • 111 institutional investors held Anterix (ATEX) as of Q3 2025, unchanged from Q2 2025.
  • Funds reported $379M of Anterix stock for Q3 2025, down 12% quarter-over-quarter.
  • 25 funds opened new Anterix positions in Q3 2025 and 25 closed out, a net change of 0 holders.
  • The largest Anterix buyer in Q3 2025 was Gabelli Funds, an estimated $2.2M added.
  • The largest Anterix seller in Q3 2025 was ClearBridge Investments, an estimated $5.22M sold.

Based on aggregated 13F filings for Q3 2025.