アメリカン・タワー・コーポレーション
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionBrookfield Asset Management Inc.
ManagerBruce Flatt
Latest Disclosed Ownership218,234 shares
Latest Disclosed Value $ 37,662,824
Brookfield Asset Management Inc. reports 0.72% increase in ownership of AMT / American Tower Corporation

On May 15, 2026 - Brookfield Asset Management Inc. filed a 13F-HR form disclosing ownership of 218,234 shares of American Tower Corporation (MX:AMT) valued at $37,662,824 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 216,684 shares of American Tower Corporation. This represents a change in shares of 0.72% during the quarter.

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 218,234 1,550 0.72 37,663 -1.00 0.0290
2026-02-13 2025-12-31 13F American Tower COM 03027X100 216,684 -178,200 -45.13 38,043 -49.91 0.0471
2025-11-14 2025-09-30 13F American Tower COM 03027X100 394,884 -35,454 -8.24 75,944 -20.15 0.0885
2025-08-15 2025-06-30 13F American Tower COM 03027X100 430,338 -48,221 -10.08 95,113 -8.66 0.1157
2025-08-14 2025-03-31 13F/A-2 American Tower COM 03027X100 478,559 159,449 49.97 104,134 77.92 0.1382
2025-06-10 2025-03-31 13F/A-1 American Tower COM 03027X100 478,559 159,449 104,134 0.5456
2025-05-15 2025-03-31 13F American Tower COM 03027X100 478,559 159,449 104,134 0.5476
2025-06-10 2024-12-31 13F/A-1 American Tower COM 03027X100 319,110 -391,615 -55.10 58,528 -64.59 0.3546
2025-02-14 2024-12-31 13F American Tower COM 03027X100 319,110 -391,615 58,528 0.3562
2024-11-15 2024-09-30 13F American Tower COM 03027X100 710,725 333,209 88.26 165,286 125.24 0.9341
2024-08-15 2024-06-30 13F American Tower COM 03027X100 377,516 -25,703 -6.37 73,382 -7.90 0.4601
2024-05-15 2024-03-31 13F AMERICAN TOWER COM 03027X100 403,219 12,661 3.24 79,672 -5.50 0.4706
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 390,558 -22,737 -5.50 84,314 24.05 0.4815
2023-11-14 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 413,295 -47,810 -10.37 67,966 -24.00 0.4249
2023-09-26 2023-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 461,105 7,150 1.58 89,427 -3.60 0.3529
2023-08-14 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 461,105 7,150 89,427 0.3333
2023-09-26 2023-03-31 13F/A-2 AMERICAN TOWER CORP COM 03027X100 453,955 -25,676 -5.35 92,761 -8.71 0.3559
2023-05-23 2023-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 453,955 -25,676 92,761 0.3239
2023-05-15 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 453,955 -25,676 92,761 0.3239
2023-02-14 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 479,631 12,848 2.75 101,615 1.39 0.3827
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 466,783 -5,756 -1.22 100,218 -17.02 0.3706
2022-11-16 2022-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 472,539 158,220 50.34 120,776 52.95 0.5145
2022-08-15 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 472,539 158,220 120,776 0.1716
2022-05-16 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 314,319 6,117 1.98 78,963 -12.41 0.2928
2022-02-14 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 308,202 -4,646 -1.49 90,149 8.57 0.3525
2021-11-16 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 312,848 4,600 1.49 83,033 -0.28 0.3402
2021-08-17 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 308,248 -12,400 -3.87 83,270 8.63 0.3995
2021-05-17 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 320,648 -772,919 -70.68 76,654 -68.77 0.3814
2021-02-16 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,093,567 15,300 1.42 245,462 -5.83 1.1030
2020-11-16 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,078,267 -16,480 -1.51 260,649 -7.91 1.4898
2020-08-14 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,094,747 1,094,747 1.53 283,036 8.59 1.6843
2019-11-15 2019-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 0 -1,419,214 -100.00 0 -100.00
2019-08-14 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,419,214 99,019 7.50 290,158 11.53 1.2459
2019-05-15 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,320,195 -81,800 -5.83 260,158 17.30 1.0946
2019-02-14 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,401,995 -141,293 -9.16 221,782 -1.10 1.1014
2018-11-15 2018-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 1,543,288 -46,100 -2.90 224,240 -2.14 0.8953
2018-11-14 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,543,288 224,240
2018-11-15 2018-06-30 13F/A-2 AMERICAN TOWER CORP COM 03027X100 1,589,388 31,322 2.01 229,142 1.19 0.8568
2018-08-14 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,589,388 31,322 229,142
2018-05-16 2018-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 1,558,066 -1,252,077 -44.56 226,449 -43.52 0.9507
2018-05-15 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,558,066 -1,252,077 226,449
2018-02-15 2017-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 2,810,143 430,500 18.09 400,923 23.27 1.8753
2018-02-14 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,810,143 430,500 400,923
2017-11-14 2017-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,379,643 -249,000 -9.47 325,250 -6.49 1.5221
2017-08-29 2017-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 2,628,643 244,700 10.26 347,822 20.04 1.7865
2017-08-14 2017-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,628,643 2,628,643 347,822
2017-08-23 2017-03-31 13F/A-3 AMERICAN TOWER CORP COM 03027X100 2,383,943 -279,780 -10.50 289,744 2.93 1.6719
2017-05-23 2017-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 2,383,943 0 289,744 1.6807
2017-05-15 2017-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,383,943 289,744
2017-02-14 2016-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,663,723 -797,700 -23.05 281,502 -28.24 1.7102
2017-08-23 2016-09-30 13F/A-5 AMERICAN TOWER CORP COM 03027X100 3,461,423 306,200 9.70 392,283 9.43 2.1310
2016-11-14 2016-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,461,423 392,283
2017-08-23 2016-06-30 13F/A-6 AMERICAN TOWER COM 03027X100 3,155,223 -82,820 -2.56 358,465 8.14 1.7636
2016-11-18 2016-06-30 13F/A-1 AMERICAN TOWER COM 03027X100 3,155,223 0 358,465 1.8642
2016-08-12 2016-06-30 13F AMERICAN TOWER COM 03027X100 3,155,223 358,465
2017-08-23 2016-03-31 13F/A-4 AMERICAN TOWER CORP COM 03027X100 3,238,043 134,971 4.35 331,478 10.18 1.6947
2016-05-11 2016-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,238,043 331,478
2016-02-16 2015-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,103,072 -714,170 -18.71 300,842 -10.42 1.6550
2015-12-15 2015-09-30 13F/A-4 AMERICAN TOWER CORP COM 03027X100 3,817,242 -647,030 -14.49 335,841 -19.36 1.8846
2015-11-17 2015-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 3,817,242 0 335,841 1.9859
2015-11-20 2015-09-30 13F/A-3 AMERICAN TOWER CORP COM 03027X100 3,817,242 0 335,841 1.8641
2015-11-13 2015-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,817,242 335,841
2015-11-17 2015-06-30 13F/A-1 AMERICAN TOWER COM 03027X100 4,464,272 -2,038,043 416,472 2.4151
2015-12-15 2015-06-30 13F/A-3 AMERICAN TOWER COM 03027X100 4,464,272 -2,038,043 -31.34 416,472 -31.97 2.4407
2015-08-14 2015-06-30 13F AMERICAN TOWER COM 03027X100 4,464,272 416,472
2015-05-13 2015-03-31 13F AMERICAN TOWER CORP COM 03027X100 6,502,315 1,387,752 27.13 612,193 21.09 3.2644
2015-02-12 2014-12-31 13F AMERICAN TOWER CORP COM 03027X100 5,114,563 1,013,174 24.70 505,575 31.66 2.4304
2014-11-12 2014-09-30 13F AMERICAN TOWERS CORP COM 03027X100 4,101,389 36,600 0.90 384,013 4.99 2.2647
2014-09-08 2014-06-30 13F/A-1 AMERICAN TOWERS CORP COM 03027X100 4,064,789 169,663 4.36 365,750 14.69 2.3597
2014-08-15 2014-06-30 13F AMERICAN TOWERS CORP COM 03027X100 4,064,789 365,750
2014-05-15 2014-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,895,126 466,102 13.59 318,894 16.51 1.3805
2014-02-14 2013-12-31 13F American Tower Corp COM 03027X100 3,429,024 517,952 17.79 273,705 26.83 1.5042
2013-11-21 2013-09-30 13F/A-1 American Tower COM 03027X100 2,628,624 2,452,912 208,581 1.0765
2013-12-10 2013-09-30 13F/A-2 American Tower COM 03027X100 2,911,072 2,735,360 1,556.73 215,798 67.85 1.1132
2013-11-14 2013-09-30 13F American Tower COM 03027X100 2,628,624 208,581
2013-12-16 2013-06-30 13F/A-1 AMERICAN TOWER COM 03027X100 175,712 175,712 128,569 0.6645
2013-08-15 2013-06-30 13F AMERICAN TOWER COM 03027X100 1,757,120 128,569 0.7884
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.