Who Owns AMERICAN TOWER CORP (AMT-PA)? -- Institutional Holders (2026-03-31)

7 institutions reported holding $93.3M of AMERICAN TOWER CORP (AMT-PA) in SEC 13F filings for 2026-03-31. Largest institutional holders: IMC-Chicago, LLC ($53.0M), SIMPLEX TRADING, LLC ($15.7M), GROUP ONE TRADING LLC ($15.2M), Maven Securities LTD ($9.3M), SG Americas Securities, LLC ($18,000). Source: SEC Form 13F.

RankInstitutionValueSharesChange
1IMC-Chicago, LLC$53.0M307,300Added
2SIMPLEX TRADING, LLC$15.7M90,700Added
3GROUP ONE TRADING LLC$15.2M88,200Trimmed
4Maven Securities LTD$9.3M54,100Added
5SG Americas Securities, LLC$18,00010,100Hold
6JPMORGAN CHASE & CO$00Exited
7THURSTON, SPRINGER, MILLER, HERD & TITAK, INC.$00Exited

Source: SEC Form 13F filings · as of 2026-03-31