Who holds ticker verified against the SEC company list on 2026-09-10 — a reviewed name-and-class mapping row, never an inferred symbol. how tickers are mapped ↗

AMERICAN TOWER CORP · common stock (filed as COM) · Q1 2026 · 35 members disclosed AMT ↗
13F filers reporting this class for the quarter ended 2026-03-31; 1–500 of 1,357 holders are listed, largest first
1,357
sum of the reported values across every holder; undisclosed values are left out, never counted as zero
$63.4B
holders whose share count rose or who opened the position (new + add), by shares
659
holders absent this quarter after holding last quarter — inferred from absence, not a sale record
125
FILING WINDOW OPEN
Q3 2026 filings are due by 2026-11-16 — figures for that quarter will change; missing filers are not zeros.

Holders — quarter ended 2026-03-31

by reported value · Δ shares vs 2025-12-31Holders rank by reported value. The change kind — new, add, trim or exit — is read from the share count against the prior quarter, never from the reported value.
13F holders of AMT ranked by reported value, 1–25 of 1,357 holders
#FilerReported valueSharesΔ sharesChange
1BlackRock, Inc.$7.8B44,954,137+919,381ADD
2VANGUARD CAPITAL MANAGEMENT LLC$5.2B30,362,380—NO PRIOR
3VANGUARD PORTFOLIO MANAGEMENT LLC$4.8B27,596,159—NO PRIOR
4STATE STREET CORP$3.7B21,434,609+447,075ADD
5GEODE CAPITAL MANAGEMENT, LLC$2.4B13,933,628+434,593ADD
6FMR LLC$2.0B11,317,048−701,791TRIM
7MORGAN STANLEY$1.7B9,583,923−223,728TRIM
8DEUTSCHE BANK AG\$1.3B7,769,353+860,052ADD
9LAZARD ASSET MANAGEMENT LLC$1.3B7,325,743+1,240,780ADD
10Invesco Ltd.$1.3B7,275,230+327,040ADD
11PRINCIPAL FINANCIAL GROUP INC$1.0B5,914,591−123,470TRIM
12DIMENSIONAL FUND ADVISORS LP$1.0B5,811,041−472,089TRIM
13Capital World Investors$978M5,667,888+1,446,797ADD
14NORTHERN TRUST CORP$922M5,339,734−13,270TRIM
15CHARLES SCHWAB INVESTMENT MANAGEMENT INC$904M5,240,288+138,219ADD
16Legal & General Group Plc$833M4,825,921−47,774TRIM
17BANK OF AMERICA CORP /DE/$779M4,511,662+566,899ADD
18UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC$749M4,339,494+84,767ADD
19ARROWSTREET CAPITAL, LIMITED PARTNERSHIP$724M4,195,978−73,166TRIM
20Capital Research Global Investors$708M4,103,353+180,765ADD
21Nuveen, LLC$671M3,889,182−83,466TRIM
22Amundi$661M3,830,533+663,976ADD
23Clearbridge Investments, LLC$636M3,685,476+450,496ADD
24WELLS FARGO & COMPANY/MN$604M3,501,851+490,355ADD
25UBS Group AG$602M3,488,057−246,864TRIM
Show the top 500 of 1,357 holders
Truncated by Public Filings. Top 500 of 1,357 holders shown; the rest are on EDGAR. Method ↗
Newest filing in this build: 2026-07-31. Per-row filing dates are on each receipt.

Congress ↔ notable managers · AMT

Congress · last 90 days

Buyers
0 — —
Sellers
0 — —

filed 2026-07-31 → 2026-10-29 · statutory ranges

Use of congressional disclosure reports for commercial purposes, credit decisions or solicitation is restricted by 5 U.S.C. §13107(c).

Notable managers · quarter ended 2026-03-31

Adding
1 Tudor Investment Corp $18.1M held

by shares · $ = value heldNEW + ADD vs TRIM + EXIT, by share count. $ = reported value now, not the change. · AMERICAN TOWER CORP

Merged timeline of congressional filings and notable-manager moves on AMT
DateWhoChangeSize
2026-05-15Tudor Investment Corp 13FADD+55,578 sh
2026-05-15Bridgewater Associates 13FTRIM−29,367 sh
2026-05-15Gotham Asset Management 13FTRIM−77,765 sh
2026-05-15Moore Capital Management 13FEXIT−1,418 sh
2026-05-14Caxton Associates 13FTRIM−1,425 sh

5 newest, by filing date · 13F rows are quarter-end snapshots, not trades

A 13F is a quarterly, long-only snapshot filed up to 45 days late — not current holdings. what a 13F covers ↗

13F reports cover LONG positions in Section 13(f) securities (US exchange-traded equities plus reportable options, warrants, certain convertibles) held by managers with at least $100M in such securities — so managers below that threshold are absent entirely. No short positions, no cash, no non-13(f) assets — not a full portfolio, and not a census of institutional ownership.

Positions are quarter-end snapshots filed up to 45 days late — not current holdings: a position may have changed or closed since the quarter ended.

Values are the manager's stated market value at quarter-end in era-dependent units (whole dollars for form versions effective 2023-01-03 onward, thousands before), normalized here to whole dollars; each record notes its original unit.

Affiliated managers may report the same position, so one position can appear under more than one filer.

Positions under confidential treatment may be omitted until a later amendment discloses them.

These are disclosures, not investment advice.