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 48,462 shares, up 40,283 (492.5%) from the prior quarter.

Reported value 508.5%; share count 492.5% vs. the prior quarter.

Added
% of reported 13F value < 0.01% This manager · Q1 2023
Shares 48,462 Quarter-end amount reported
Reported value $1,601,185 Fair value at quarter end
Consecutive quarters held 3 Through Q1 2023

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

94 managers reported ANTERIX INC COM for Q1 2023.

Manager Activity Shares Change % of reported 13F Reported value Tenure
Owl Creek Asset Management L P Unchanged 5,411,776 0 9.14% $178,805,079 15 qtrs
Heard Capital LLC Added 1,719,790 +210,530 4.68% $56,821,861 10 qtrs
BlackRock Inc Added 1,324,387 +35,656 < 0.01% $43,757,746 15 qtrs
STONEHILL CAPITAL MANAGEMENT LLC Unchanged 874,942 0 15.0% $28,908,000 8 qtrs
VANGUARD GROUP INC Added 804,172 +3,542 < 0.01% $26,569,844 15 qtrs
MORGAN STANLEY Reduced 771,101 -643,947 < 0.01% $25,477,178 15 qtrs
QVT Financial LP Unchanged 503,941 0 0.82% $16,650,211 15 qtrs
Price Jennifer C Unchanged 400,000 0 4.21% $13,216,000 4 qtrs
STATE STREET CORPORATION Added 397,365 +10,443 < 0.01% $13,128,940 14 qtrs
GEODE CAPITAL MANAGEMENT LLC Added 379,648 +12,757 < 0.01% $12,543,581 15 qtrs
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Filing details and methodology As reported
Report period
March 31, 2023
Filed
May 15, 2023
Filing type
13F-HR
Position type
COM

Voting authority reported

Sole
48,462
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.