American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionFranklin Resources Inc
Latest Disclosed Ownership3,343,526 shares
Latest Disclosed Value $ 577,025,717
Franklin Resources Inc reports 37.37% decrease in ownership of AMT / American Tower Corporation

On May 13, 2026 - Franklin Resources Inc filed a 13F-HR form disclosing ownership of 3,343,526 shares of American Tower Corporation (US:AMT) valued at $577,025,717 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 5,338,399 shares of American Tower Corporation. This represents a change in shares of -37.37% during the quarter. The current value of the position is $648,343,127 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-13 2026-03-31 13F AMERICAN TOWER COM 03027X100 3,343,526 -1,994,873 -37.37 577,026 -38.44 0.0230
2026-02-11 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 5,338,399 -37,031 -0.69 937,263 -9.34 0.2300
2025-11-13 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 5,375,430 -33,362 -0.62 1,033,803 -13.52 0.2578
2025-08-12 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 5,408,792 221,292 4.27 1,195,451 5.90 0.3169
2025-05-13 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 5,187,500 22,595 0.44 1,128,800 19.16 0.3248
2025-02-12 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 5,164,905 742,632 16.79 947,295 -3.48 0.2630
2024-11-27 2024-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 4,422,273 38,436 0.88 981,455 15.18 0.2756
2024-11-12 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,476,388 92,551 992,415 0.0478
2024-08-14 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,383,837 377,751 9.43 852,130 7.65 0.2620
2024-05-13 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,006,086 3,205,818 400.59 791,563 358.18 0.2506
2024-02-09 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 800,268 -78,426 -8.93 172,762 19.56 0.0808
2023-11-13 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 878,694 -9,751 -1.10 144,501 -16.14 0.0734
2023-08-11 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 888,445 23,489 2.72 172,305 -2.51 0.0819
2023-05-12 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 864,956 -23,482 -2.64 176,745 -6.10 0.0887
2023-02-10 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 888,438 -11,207 -1.25 188,224 -2.55 0.0978
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 899,645 -37,803 -4.03 193,155 -19.39 0.1053
2022-08-11 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 937,448 -3,663 -0.39 239,602 1.34 0.1188
2022-05-13 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 941,111 -18,372 -1.91 236,425 -15.76 0.0945
2022-02-11 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 959,483 -207,941 -17.81 280,647 -9.42 0.1012
2021-11-12 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,167,424 20,524 1.79 309,848 0.01 0.1167
2021-08-13 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,146,900 -56,500 -4.70 309,823 7.70 0.1184
2021-05-13 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,203,400 -231,818 -16.15 287,685 -10.70 0.1171
2021-02-10 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,435,218 -343,841 -19.33 322,148 -25.09 0.1363
2020-11-12 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,779,059 -66,076 -3.58 430,052 -10.02 0.2082
2020-08-13 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,845,135 171,301 10.23 477,959 31.12 0.2462
2020-05-13 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,673,834 -191,348 -10.26 364,518 -14.96 0.2433
2020-03-11 2019-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 1,865,182 -936,637 -33.43 428,649 -30.81 0.2252
2020-02-12 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,865,182 -936,637 428,649 54,144.2373
2019-11-14 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,801,819 -149,272 -5.06 619,555 2.68 0.3365
2019-08-14 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,951,091 -250,174 -7.81 603,359 -4.36 0.3209
2019-05-15 2019-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 3,201,265 -428,395 -11.80 630,835 9.87 0.3379
2019-05-14 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,201,265 -428,395 630,835
2019-02-12 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,629,660 174,545 5.05 574,181 14.37 0.3465
2018-11-13 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,455,115 -17,658 -0.51 502,017 0.27 0.2499
2018-08-14 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,472,773 -40,083 -1.14 500,662 -1.94 0.2568
2018-05-10 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,512,856 263,843 8.12 510,561 10.14 0.2588
2018-02-14 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,249,013 36,193 1.13 463,542 5.56 0.2224
2017-11-13 2017-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,212,820 74,296 2.37 439,118 5.74 0.2153
2017-08-10 2017-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,138,524 74,693 2.44 415,289 11.53 0.2071
2017-05-12 2017-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,063,831 -245,804 -7.43 372,354 6.46 0.1890
2017-02-14 2016-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,309,635 -29,641 -0.89 349,774 -7.58 0.1811
2016-11-14 2016-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,339,276 -40,302 -1.19 378,443 -1.44 0.1979
2016-08-11 2016-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,379,578 -80,236 -2.32 383,969 8.41 0.2066
2016-05-10 2016-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,459,814 113,768 3.40 354,186 9.18 0.1880
2016-04-27 2015-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 3,346,046 506,673 17.84 324,408 29.86 0.1642
2016-02-12 2015-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,346,046 324,408
2015-11-10 2015-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,839,373 331,920 13.24 249,815 6.80 0.1234
2015-08-12 2015-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,507,453 -830,419 -24.88 233,920 -25.56 0.1062
2015-05-14 2015-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,337,872 193,661 6.16 314,259 1.11 0.1425
2015-02-10 2014-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,144,211 604,994 23.83 310,807 30.73 0.1410
2014-11-12 2014-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,539,217 14,247 0.56 237,746 4.64 0.1084
2014-08-12 2014-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,524,970 -745,077 -22.78 227,197 -15.14 0.1001
2014-05-13 2014-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,270,047 15,951 0.49 267,719 3.07 0.1264
2014-02-12 2013-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,254,096 55,601 1.74 259,743 9.55 0.1270
2013-11-14 2013-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,198,495 -302,684 -8.65 237,106 -7.45 0.1262
2013-08-09 2013-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,501,179 3,501,179 256,182 0.1462
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.