Form 13-F position report

ANTERIX INC COM

Reported by CITADEL ADVISORS LLC

Company profile Manager portfolio Source filing
ATEX CUSIP 03676C100 Manager CIK 0001423053
Latest reported change

Reported 272,789 shares, up 23,595 (9.5%) from the prior quarter.

Reported value -23.3%; share count 9.5% vs. the prior quarter.

Added
% of reported 13F value < 0.01% This manager · Q2 2025
Shares 272,789 Quarter-end amount reported
Reported value $6,997,038 Fair value at quarter end
Consecutive quarters held 12 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.

Manager history

Quarterly position history

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

19 quarters
Quarter Activity Shares Change % of reported 13F Reported value Filed
Q2 2026 Reduced 9,014 -152,149 (-94.4%) < 0.01% $927,901 2026-08-14
Q1 2026 Added 161,163 +52,783 (48.7%) < 0.01% $6,154,815 2026-05-15
Q4 2025 Reduced 108,380 -2,714 (-2.4%) < 0.01% $2,365,935 2026-02-17
Q3 2025 Reduced 111,094 -161,695 (-59.3%) < 0.01% $2,385,188 2025-11-14
Q2 2025 Added 272,789 +23,595 (9.5%) < 0.01% $6,997,038 2025-08-14
Q1 2025 Added 249,194 +81,291 (48.4%) < 0.01% $9,120,500 2025-05-15
Q4 2024 Reduced 167,903 -31,711 (-15.9%) < 0.01% $5,149,585 2025-02-14
Q3 2024 Added 199,614 +32,093 (19.2%) < 0.01% $7,517,463 2024-11-14
Q2 2024 Added 167,521 +98,866 (144.0%) < 0.01% $6,632,156 2024-08-14
Q1 2024 Reduced 68,655 -12,655 (-15.6%) < 0.01% $2,307,495 2024-05-15
Q4 2023 Added 81,310 +706 (0.9%) < 0.01% $2,709,250 2024-02-14
Q3 2023 Added 80,604 +5,811 (7.8%) < 0.01% $2,529,353 2023-11-14
Q2 2023 Added 74,793 +26,331 (54.3%) < 0.01% $2,370,190 2023-08-14
Q1 2023 Added 48,462 +40,283 (492.5%) < 0.01% $1,601,185 2023-05-15
Q4 2022 Reduced 8,179 -46,366 (-85.0%) < 0.01% $263,119 2023-02-14
Q3 2022 New 54,545 +54,545 (0.0%) < 0.01% $1,948,000 2022-11-14
Q1 2022 Reduced 0 -12,684 (-100.0%) 0 $0 2022-05-16
Q4 2021 Added 12,684 +184 (1.5%) < 0.01% $745,000 2022-02-14
Q3 2021 Added 12,500 +4,912 (64.7%) < 0.01% $759,000 2021-11-15
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Institutional context

Who else reported the position

145 managers reported ANTERIX INC COM for 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
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Filing details and methodology As reported
Report period
June 30, 2025
Filed
August 14, 2025
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
272,789
Shared
0
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.