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SIMPLEX TRADING, LLC

Position in ATEX — Anterix Inc.

CIK 1488542 CHICAGO, IL

Position in ATEX

as of Jun 30, 2026 · filed Aug 12, 2026
Position Value
$553,508
-$1,117,304 QoQ
Shares Held
5,377
-87.7% QoQ
Ownership
0.027%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#89
of 171 holders
Holding Since
Mar 2020
24 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in ATEX Over Time

Shares Held

Position Value (USD)

Position in Telecom Services

Communication Services · as of Jun 30, 2026

SIMPLEX TRADING, LLC holds $43,139,224 across 30 Telecom Services names. ATEX ranks #9 (1.3% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in ATEX

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24 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $553,508 5,377
2026-03-31 $1,670,812 43,750
2025-12-31 $492,266 22,550
2025-09-30 $63,722 2,968
2025-03-31 $462,404 12,634
2024-12-31 $3 123
2024-09-30 $3 96
2024-03-31 $459,347 13,667
2023-12-31 $148,307 4,451
2023-09-30 $130,634 4,163
2023-06-30 $17,904 565
2023-03-31 $167,446 5,068
2022-12-31 $54,882 1,706
2022-09-30 $95,872 2,684
2022-06-30 $157,010 3,823
2022-03-31 $551,150 9,519
2021-12-31 $15,101 257
2021-09-30 $961,912 15,847
2021-06-30 $950,661 15,847
2021-03-31 $815,302 17,288
2020-12-31 $269,366 7,164
2020-09-30 $188,638 5,767
2020-06-30 $578,039 12,749
2020-03-31 $59,096 1,294