DOSSIER · 13F Holders · Q2 2026

AMERICAN TOWER CORP NEW

6 institutions still hold AMERICAN TOWER CORP NEW as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 03027X900·6 13F holders·last filed Jun 30, 2026
Market cap
13F value held
$61M
visible holders
Holders
6
filers reporting
Concentration
60.98%
IMC-Chicago, LLC #1
top holder share
AI Holders Summary · Q2 2026

6 institutions reported AMERICAN TOWER CORP NEW in Q2 2026. IMC-Chicago, LLC leads at 61.0% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
IMC-Chicago, LLC
CIK 0001452861· Market maker
$37M227K0.01%Q2 2026
02
JPMORGAN CHASE & CO
CIK 0000019617
$15M88K0.00%Q2 2026
03
GROUP ONE TRADING LLC
CIK 0000932540
$8M47K0.01%Q2 2026
04
SIMPLEX TRADING, LLC
CIK 0001488542
$1M8K0.00%Q2 2026
05
SG Americas Securities, LLC
CIK 0001313360
$18K10K0.00%Q1 2026
06
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00Q2 2025