American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionMacquarie Group Ltd
Latest Disclosed Ownership284,825 shares
Latest Disclosed Value $ 49,128,732
Macquarie Group Ltd reports 7.98% decrease in ownership of AMT / American Tower Corporation

On May 15, 2026 - Macquarie Group Ltd filed a 13F-HR form disclosing ownership of 284,825 shares of American Tower Corporation (US:AMT) valued at $49,155,098 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 309,522 shares of American Tower Corporation. This represents a change in shares of -7.98% during the quarter. The current value of the position is $55,230,416 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)
2026-05-15 2026-03-31 13F AMERICAN TOWER COM 03027X100 284,825 -24,697 -7.98 49,129 -9.59 0.2288
2026-02-13 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 309,522 -308,672 -49.93 54,343 -54.29 0.2375
2025-11-13 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 618,194 27,176 4.60 118,891 -8.98 0.1388
2025-08-14 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 591,018 19,595 3.43 130,627 5.09 0.1602
2025-08-14 2025-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 571,423 -38,738 -6.35 124,295 14.47 0.1543
2025-05-15 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 571,423 -38,738 118,603 0.0969
2025-02-14 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 610,161 -350 -0.06 108,584 -23.52 0.1317
2024-11-14 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 610,511 -158,160 -20.58 141,980 -4.98 0.1533
2024-08-09 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 768,671 -542 -0.07 149,414 -1.69 0.1714
2024-05-14 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 769,213 15,004 1.99 151,989 -6.65 0.1724
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 754,209 43,981 6.19 162,818 39.40 0.1881
2023-11-14 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 710,228 117,696 19.86 116,797 1.64 0.1467
2023-10-27 2023-06-30 13F/A-2 AMERICAN TOWER CORP COM 03027X100 592,532 40,213 7.28 114,916 1.27 0.1314
2023-10-12 2023-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 592,532 40,213 114,916 0.1155
2023-08-14 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 592,532 40,213 114,916 0.1166
2023-06-01 2023-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 552,319 -11,179 -1.98 113,471 -4.74 0.1348
2023-05-15 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 552,319 -11,179 113,471 0.1042
2023-02-21 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 563,498 42,223 8.10 119,119 5.24 0.1407
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 521,275 -24,786 -4.54 113,183 -18.32 0.1388
2022-08-17 2022-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 546,061 24,131 4.62 138,565 13.62 0.1556
2022-08-15 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 546,061 24,131 138,565 0.0496
2022-05-16 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 521,930 197,669 60.96 121,957 28.58 0.0928
2022-02-11 2021-12-31 13F American Tower COM 03027X100 324,261 166,202 105.15 94,847 125.10 0.0790
2021-11-12 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 158,059 -27,236 -14.70 42,135 -15.82 0.0359
2021-08-13 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 185,295 24,423 15.18 50,056 30.15 0.0411
2021-05-14 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 160,872 -4,855 -2.93 38,459 3.39 0.0544
2021-02-16 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 165,727 32,788 24.66 37,199 15.75 0.0543
2020-11-13 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 132,939 -122,476 -47.95 32,136 -51.33 0.0544
2020-08-11 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 255,415 -4,325 -1.67 66,035 16.77 0.1137
2020-05-15 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 259,740 -177,666 -40.62 56,552 -43.74 0.1162
2020-03-18 2019-12-31 13F/A-2 AMERICAN TOWER CORP COM 03027X100 437,406 114,751 35.56 100,524 40.89 0.1435
2020-02-28 2019-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 292,606 -144,800 67,246 0.0971
2020-02-14 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 437,406 114,751 100,524 126,149.1008
2019-11-14 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 322,655 -45,036 -12.25 71,349 -5.09 0.1196
2019-11-06 2019-06-30 13F/A-2 AMERICAN TOWER CORP COM 03027X100 367,691 28,683 8.46 75,175 12.53 0.1268
2019-09-24 2019-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 367,691 0 75,175 0.1278
2019-08-14 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 367,691 28,683 75,175
2019-05-15 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 339,008 -49,914 -12.83 66,805 8.58 0.1139
2019-02-15 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 388,922 -63,225 -13.98 61,524 -6.35 0.1189
2018-11-15 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 452,147 -56,491 -11.11 65,697 -10.41 0.1070
2019-03-21 2018-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 508,638 41,266 8.83 73,330 7.95 0.1264
2018-08-14 2018-06-30 13F AMERICAN WTR WKS CO INC COM 03027X100 508,638 41,266 73,330
2018-05-11 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 467,372 -93,730 -16.70 67,928 -21.27 0.1238
2018-02-14 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 561,102 -212,009 -27.42 86,276 -18.35 0.1525
2017-11-08 2017-09-30 13F AMERICAN TOWER CORP COM 03027X100 773,111 -32,568 -4.04 105,668 -0.88 0.1895
2017-08-14 2017-06-30 13F AMERICAN TOWER CORP COM 03027X100 805,679 -56,670 -6.57 106,608 1.72 0.1949
2017-05-15 2017-03-31 13F American Tower COM 03027X100 862,349 6,338 0.74 104,806 15.85 0.1904
2017-03-30 2016-12-31 13F/A-1 American Tower REIT 03027X100 856,011 -15,480 -1.78 90,464 -8.41 0.1732
2017-02-15 2016-12-31 13F American Tower REIT 03027X100 856,011 90,464
2016-11-15 2016-09-30 13F American Tower REIT 03027X100 871,491 -18,200 -2.05 98,766 -2.29 0.1900
2016-09-14 2016-06-30 13F/A-1 American Tower REIT 03027X100 889,691 81,495 10.08 101,079 22.17 0.1985
2016-08-15 2016-06-30 13F American Tower REIT 03027X100 889,691 101,079
2016-05-16 2016-03-31 13F American Tower REIT 03027X100 808,196 43,277 5.66 82,735 11.56 0.1667
2016-02-16 2015-12-31 13F American Tower REIT 03027X100 764,919 11,480 1.52 74,160 11.88 0.1523
2015-11-16 2015-09-30 13F American Tower REIT 03027X100 753,439 62,779 9.09 66,288 2.88 0.1421
2015-08-21 2015-06-30 13F/A-1 American Tower REIT 03027X100 690,660 -39,465 -5.41 64,433 -6.27 0.1275
2015-08-14 2015-06-30 13F American Tower REIT 03027X100 690,660 64,433
2015-05-18 2015-03-31 13F American Tower REIT 03027X100 730,125 -90,270 -11.00 68,741 -15.24 0.1349
2015-02-17 2014-12-31 13F American Tower REIT 03027X100 820,395 -15,372 -1.84 81,096 3.63 0.1673
2014-11-14 2014-09-30 13F American Tower REIT 03027X100 835,767 -29,388 -3.40 78,253 0.52 0.1679
2014-08-14 2014-06-30 13F AMERICAN TOWER REIT 03027X100 865,155 -17,527 -1.99 77,847 7.72 0.1736
2014-05-15 2014-03-31 13F American Tower REIT 03027X100 882,682 34,940 4.12 72,265 6.80 0.1248
2014-02-14 2013-12-31 13F American Tower REIT 03027X100 847,742 214,055 33.78 67,667 44.05 0.1214
2013-11-14 2013-09-30 13F AMERICAN TOWER REIT Common Stock 03027X100 633,687 61,296 10.71 46,976 12.16 0.0919
2013-08-16 2013-06-30 13F/A-1 AMERICAN TOWER REIT COMMON 03027X100 572,391 572,391 41,882 0.0914
2013-08-14 2013-06-30 13F AMERICAN TOWER REIT COMMON 03027X100 572,391 41,882 0.0914
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.