Form 13-F position report

ANTERIX INC COM

Reported by MARSHALL WACE LLP

ATEX CUSIP 03676C100 Manager CIK 0001318757

Reported 188,980 shares, up 63,983 (51.2%) from the prior quarter.

Reported value 6.0%; share count 51.2% vs. the prior quarter.

Added
% of reported 13F value < 0.01% This manager · Q2 2025
Shares 188,980 Quarter-end amount reported
Reported value $4,847,336 Fair value at quarter end
Consecutive quarters held 6 Through Q2 2025

Reported position value by quarter

Reported position value by quarter

Each bar is a Form 13-F quarter-end snapshot. It does not show trades made within the quarter.

Reported position value by quarter
Date Holding Value
2021-09-30 0
2021-12-31 872000
2022-03-31 0
2022-09-30 328000
2022-12-31 0
2024-03-31 562867
2024-06-30 2322034
2024-09-30 3588660
2024-12-31 1242717
2025-03-31 4574892
2025-06-30 4847336
2025-09-30 6152893
2025-12-31 6358098
2026-03-31 0
2026-06-30 386746

Quarterly position history

How this manager's reported quarter-end position changed over time.

15 quarters
Quarterly reported position history for ANTERIX INC COM held by MARSHALL WACE LLP.
Quarter Activity Shares Change % of reported 13F Reported value Filed Source filing
Q2 2026 New 3,757 +3,757 (0.0%) < 0.01% $386,746 2026-08-13
Q1 2026 Reduced 0 -291,255 (-100.0%) 0 $0 2026-05-15
Q4 2025 Added 291,255 +4,674 (1.6%) < 0.01% $6,358,098 2026-02-13
Q3 2025 Added 286,581 +97,601 (51.6%) < 0.01% $6,152,893 2025-11-13
Q2 2025 Added 188,980 +63,983 (51.2%) < 0.01% $4,847,336 2025-08-13
Q1 2025 Added 124,997 +84,478 (208.5%) < 0.01% $4,574,892 2025-05-15
Q4 2024 Reduced 40,519 -54,772 (-57.5%) < 0.01% $1,242,717 2025-02-13
Q3 2024 Added 95,291 +36,639 (62.5%) < 0.01% $3,588,660 2024-11-14
Q2 2024 Added 58,652 +41,905 (250.2%) < 0.01% $2,322,034 2024-08-14
Q1 2024 New 16,747 +16,747 (0.0%) < 0.01% $562,867 2024-05-15
Q4 2022 Reduced 0 -9,151 (-100.0%) 0 $0 2023-02-14
Q3 2022 New 9,151 +9,151 (0.0%) < 0.01% $328,000 2022-11-14
Q1 2022 Reduced 0 -14,854 (-100.0%) 0 $0 2022-05-16
Q4 2021 New 14,854 +14,854 (0.0%) < 0.01% $872,000 2022-02-14
Q3 2021 Reduced 0 -7,250 (-100.0%) 0 $0 2021-11-15
Five years are shown. A free account unlocks the complete reported history. Unlock full history

Who else reported the position

145 managers reported ANTERIX INC COM for Q2 2025.

Managers reporting ANTERIX INC COM in Q2 2025.
Manager Activity Shares Change % of reported 13F Reported value Tenure
Owl Creek Asset Management L P Unchanged 5,411,776 0 6.14% $138,812,054 24 qtrs
Heard Capital LLC Unchanged 1,716,738 0 2.3% $44,034,329 19 qtrs
BlackRock Inc Added 1,140,479 +138,988 < 0.01% $29,253,288 4 qtrs
VANGUARD GROUP INC Reduced 1,043,613 -6,409 < 0.01% $26,768,672 24 qtrs
DG Capital Management LLC Added 858,039 +213,626 6.69% $22,008,700 3 qtrs
QVT Financial LP Unchanged 503,941 0 1.15% $12,926,087 24 qtrs
GARNET EQUITY CAPITAL HOLDINGS INC Added 397,395 +10,000 2.41% $10,193,182 20 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 383,557 +30,575 < 0.01% $9,840,111 24 qtrs
STATE STREET CORPORATION Added 344,064 +15,934 < 0.01% $8,825,242 23 qtrs
DIMENSIONAL FUND ADVISORS LP Reduced 337,287 -8,788 < 0.01% $8,651,538 24 qtrs
Premium adds each manager's conviction percentile across reporting peers.
Filing details and methodology As reported
Report period
June 30, 2025
Filed
August 13, 2025
Filing type
13F-HR
Position type
COMMON STOCK

Voting authority reported

Sole
0
Shared
188,980
None
0

“None” means the manager reported no voting authority for those shares on non-routine matters. It does not disclose why and is not evidence of securities lending.

Form 13-F is a delayed quarter-end snapshot of disclosed long Section 13(f) securities. It can be filed up to 45 days after quarter end, excludes short positions and most non-U.S. securities, and does not reveal intra-quarter trading. For options, reported shares and value describe the underlying-share exposure; strike, expiry, premium, and written positions are not disclosed.