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AMT

American Tower Corp /Ma/
$165.04 -0.21 (-0.13%) At close · Jul 8
Market Cap
$76.89B
Shares
465,893,069

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

The Jun 30, 2026 filing window is still open — showing the latest known positions. Funds that have not filed yet carry their prior-quarter positions; a fund that filed without this stock counts as sold out.
Holders: 1,745
Total Value: $70,241,583,277
Total Shares: 407,088,979
Showing 1–100 of 1,803 holdings by value · page 1 of 19

Institutional Ownership Trend

26 quarters

Superinvestors Holding AMT

All superinvestors →
Ray Dalio $9,822,218 Chuck Akre $8,762,231 Joel Greenblatt $6,262,755 Mario Gabelli $4,241,153

Holder Concentration

Across 1,748 13F filers
Top Holder
11.0%
Jun 2023 → Mar 2026 · range 11.0% – 14.7%
of institutional value
Top 5
30.9%
Jun 2023 → Mar 2026 · range 30.9% – 36.6%
of institutional value
Top 10
42.8%
Jun 2023 → Mar 2026 · range 41.4% – 48.1%
of institutional value
HHI
295
Jun 2023 → Mar 2026 · range 295 – 428
Broadly held
Showing 100 of 1,803
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
Mega BlackRock, Inc. $7,758,184,953 11.05% 44,954,137
Mega VANGUARD CAPITAL MANAGEMENT LLC $5,239,939,540 7.46% 30,362,380
Mega STATE STREET CORP $3,699,184,821 5.27% 21,434,609
Mega JPMORGAN CHASE & CO $2,610,853,566 3.72% 15,128,367
Mega GEODE CAPITAL MANAGEMENT, LLC $2,404,665,519 3.42% 13,933,628
Large COHEN & STEERS, INC. $2,177,936,474 3.10% 12,619,866
Mega FMR LLC $1,953,096,140 2.78% 11,317,048
Mega MORGAN STANLEY $1,653,993,419 2.35% 9,583,923
Mega DEUTSCHE BANK AG\ Bank $1,340,834,933 1.91% 7,769,353
Large LAZARD ASSET MANAGEMENT LLC $1,264,311,242 1.80% 7,325,943
Mega Invesco Ltd. $1,255,559,182 1.79% 7,275,230
Mega PRINCIPAL FINANCIAL GROUP INC $1,020,740,113 1.45% 5,914,591
Mega DIMENSIONAL FUND ADVISORS LP $1,002,869,454 1.43% 5,811,041
Mega Capital World Investors $978,164,111 1.39% 5,667,888
Mega NORTHERN TRUST CORP Bank $921,531,288 1.31% 5,339,734
Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC $904,368,903 1.29% 5,240,288
Mega Legal & General Group Plc $832,857,445 1.19% 4,825,921
Mega PRICE T ROWE ASSOCIATES INC /MD/ $823,957,839 1.17% 4,774,353
Mega GOLDMAN SACHS GROUP INC $810,676,081 1.15% 4,697,393
Mega BANK OF AMERICA CORP /DE/ Bank $778,622,625 1.11% 4,511,662
Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC $748,909,871 1.07% 4,339,494
Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP $724,141,883 1.03% 4,195,978
Mega Capital Research Global Investors $708,156,660 1.01% 4,103,353
Mega Nuveen, LLC $671,195,029 0.96% 3,889,182
Mega Amundi $661,073,380 0.94% 3,830,533
Mega Clearbridge Investments, LLC $636,039,448 0.91% 3,685,476
Mega WELLS FARGO & COMPANY/MN $604,349,443 0.86% 3,501,851
Mega UBS Group AG $601,968,875 0.86% 3,488,057
Mega FRANKLIN RESOURCES INC $577,025,710 0.82% 3,343,526
Mega AMERIPRISE FINANCIAL INC $571,342,136 0.81% 3,310,593
Mega Bank of New York Mellon Corp Bank $478,641,475 0.68% 2,773,447
Large FEDERATED HERMES, INC. $475,640,487 0.68% 2,756,058
Mega VANGUARD FIDUCIARY TRUST CO Bank $465,910,429 0.66% 2,699,678
Mega CANADA PENSION PLAN INVESTMENT BOARD Pension $411,880,290 0.59% 2,386,605
Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance $399,681,301 0.57% 2,315,919
Mega NORDEA INVESTMENT MANAGEMENT AB $352,900,557 0.50% 2,044,852
Mega Fisher Asset Management, LLC $299,670,155 0.43% 1,736,413
Mega ROYAL BANK OF CANADA Bank $283,894,612 0.40% 1,645,003
Large Cantillon Capital Management LLC $278,280,589 0.40% 1,612,473
Large BARROW HANLEY MEWHINNEY & STRAUSS LLC $273,642,847 0.39% 1,585,600
Mega HSBC HOLDINGS PLC $271,464,364 0.39% 1,572,977
Mega RAYMOND JAMES FINANCIAL INC $267,747,686 0.38% 1,551,441
Mega National Pension Service Pension $264,686,463 0.38% 1,533,703
Mid Magellan Asset Management Ltd $259,438,823 0.37% 1,503,296
Large SG Americas Securities, LLC Broker-Dealer $238,633,269 0.34% 1,382,740
Mega Swiss National Bank Bank $237,107,662 0.34% 1,373,900
Large CIBC Bancorp USA Inc. Bank $234,403,850 0.33% 1,358,233
Mega AMERICAN CENTURY COMPANIES INC $232,870,305 0.33% 1,349,347
Mega BARCLAYS PLC $216,746,672 0.31% 1,255,920
Mega TWO SIGMA INVESTMENTS, LP $211,736,503 0.30% 1,226,889
Mega Sumitomo Mitsui Trust Group, Inc. $210,647,351 0.30% 1,220,578
Mid LORING WOLCOTT & COOLIDGE FIDUCIARY ADVISORS LLP/MA $209,942,533 0.30% 1,216,494
Mega BNP PARIBAS ARBITRAGE, SA $209,217,180 0.30% 1,212,291
Large Point72 Asset Management, L.P. $208,012,744 0.30% 1,205,312
Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. Mutual Fund $201,367,896 0.29% 1,166,809
Mega Capital International Investors $197,399,420 0.28% 1,143,814
Mega D. E. Shaw & Co., Inc. $195,300,156 0.28% 1,131,650
Large M&G PLC $192,520,237 0.27% 1,115,542
Mid Heard Capital LLC $191,927,080 0.27% 1,112,105
Mid CBRE INVESTMENT MANAGEMENT LISTED REAL ASSETS LLC $191,602,975 0.27% 1,110,227
Mega NEUBERGER BERMAN GROUP LLC $184,461,097 0.26% 1,068,844
Mega Mitsubishi UFJ Asset Management Co., Ltd. $183,917,297 0.26% 1,065,693
Mega ENVESTNET ASSET MANAGEMENT INC $178,437,020 0.25% 1,033,938
Large CANADA LIFE ASSURANCE Co Insurance $177,887,351 0.25% 1,030,753
Large DAVENPORT & Co LLC $177,217,397 0.25% 1,026,871
Mega Vanguard Global Advisers, LLC $176,734,000 0.25% 1,024,070
Mega MILLENNIUM MANAGEMENT LLC $176,269,415 0.25% 1,021,378
Mega RHUMBLINE ADVISERS $171,742,987 0.24% 995,150
Large Swedbank AB Bank $164,564,867 0.23% 953,557
Mega California Public Employees Retirement System Pension $161,901,785 0.23% 938,126
Large Russell Investments Group, Ltd. $161,873,473 0.23% 937,962
Mid DUFF & PHELPS INVESTMENT MANAGEMENT CO $158,927,195 0.23% 920,890
Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $158,474,001 0.23% 918,264
Mega CITADEL ADVISORS LLC $151,311,758 0.22% 876,763
Large SEI INVESTMENTS CO $149,698,997 0.21% 867,418
Large Aberdeen Group plc $147,145,676 0.21% 852,623
Mega LPL Financial LLC $146,553,555 0.21% 849,192
Large Man Group plc $142,574,896 0.20% 826,138
Large US BANCORP \DE\ Bank $140,966,275 0.20% 816,817
Mega VANGUARD ASSET MANAGEMENT, Ltd $140,298,911 0.20% 812,950
Mid Sarasin & Partners LLP $138,984,284 0.20% 849,693
Large STOREBRAND ASSET MANAGEMENT AS $137,650,153 0.20% 797,602
Large VOLORIDGE INVESTMENT MANAGEMENT, LLC $136,582,918 0.19% 791,418
Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. $135,242,143 0.19% 783,649
Large Allianz Asset Management GmbH $131,279,533 0.19% 760,688
Large MARSHALL WACE, LLP $129,651,414 0.18% 751,254
Mega WELLINGTON MANAGEMENT GROUP LLP $129,044,103 0.18% 747,735
Large ACADIAN ASSET MANAGEMENT LLC $126,950,883 0.18% 735,606
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Pension $117,706,463 0.17% 682,040
Mega ALLIANCEBERNSTEIN L.P. $113,216,967 0.16% 656,026
Mid LASALLE INVESTMENT MANAGEMENT SECURITIES LLC Broker-Dealer $111,876,193 0.16% 648,257
Mega CITIGROUP INC $109,386,553 0.16% 633,831
Mid MILFORD FUNDS LTD $107,175,286 0.15% 621,018
Mega AQR CAPITAL MANAGEMENT LLC $99,079,210 0.14% 574,106
Large Corient Private Wealth LLC $94,371,403 0.13% 546,827
Large DekaBank Deutsche Girozentrale Bank $92,396,052 0.13% 535,381
Large NEW YORK STATE COMMON RETIREMENT FUND Pension $91,393,363 0.13% 529,571
Large AVIVA PLC $89,128,078 0.13% 516,445
Large Mitsubishi UFJ Trust & Banking Corp $88,646,060 0.13% 513,652
Large Rathbones Group PLC $88,431,545 0.13% 512,409
Key facts CIK 1053507 CUSIP 03027X100 13F (30d) 113 filings 65 filers Visit website Investor relations

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