Skip to main content

SIMPLEX TRADING, LLC

Position in AMT — American Tower Corp /Ma/

CIK 1488542 CHICAGO, IL

Position in AMT

as of Mar 31, 2026 · filed May 14, 2026
Position Value
$4,057,010
+$1,470,513 QoQ
Shares Held
23,508
+59.6% QoQ
Ownership
0.005%
of shares outstanding
% of Portfolio
0.14%
of 13F equity value
Holder Rank
not a current holder
Holding Since
Mar 2020
16 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in AMT Over Time

Shares Held

Position Value (USD)

Position in REIT - Specialty

Real Estate · as of Mar 31, 2026

SIMPLEX TRADING, LLC holds $15,352,557 across 11 REIT - Specialty names. AMT ranks #1 (26.4% of the industry book) .

# Ticker Company Shares Value (USD) Open
1 AMT
American Tower Corp /Ma/
This page
23,508 $4,057,010

All Filings in AMT

Export CSV
16 filing rows on record
Report Date Value (USD) Shares
2026-03-31 $4,057,010 23,508
2025-12-31 $2,586,497 14,732
2025-09-30 $1,863,196 9,688
2024-12-31 $1,553,666 8,471
2024-06-30 $4,339,533 22,325
2024-03-31 $15,338,516 77,628
2023-12-31 $11,989,327 55,537
2023-09-30 $11,175,035 67,954
2022-09-30 $2,662,709 12,402
2021-09-30 $8,800,730 33,159
2021-06-30 $8,891,658 32,915
2021-03-31 $5,923,667 24,779
2020-12-31 $3,791,578 16,892
2020-09-30 $638,650 2,642
2020-06-30 $16,805 65
2020-03-31 $14,153 65