American Tower Corporation
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionBurney Co/
Latest Disclosed Ownership6,037 shares
Latest Disclosed Value $ 1,041,829
Burney Co/ reports 46.10% decrease in ownership of AMT / American Tower Corporation

On April 29, 2026 - Burney Co/ filed a 13F-HR form disclosing ownership of 6,037 shares of American Tower Corporation (MX:AMT) valued at $1,041,829 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 23, 2026 disclosing 11,200 shares of American Tower Corporation. This represents a change in shares of -46.10% 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)
2026-04-29 2026-03-31 13F AMERICAN TOWER COM 03027X100 6,037 -5,163 -46.10 1,042 -47.05 0.0326
2026-01-23 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 11,200 -17,267 -60.66 1,966 -64.08 0.0613
2025-10-16 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 28,467 440 1.57 5,475 -11.62 0.1741
2025-08-05 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 28,027 2,624 10.33 6,194 12.07 0.2097
2025-05-06 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 25,403 -211 -0.82 5,528 17.67 0.2011
2025-01-14 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 25,614 -770 -2.92 4,698 -23.44 0.1660
2024-10-18 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 26,384 1,062 4.19 6,136 24.64 0.2182
2024-07-29 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 25,322 766 3.12 4,922 1.44 0.1881
2024-05-22 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 24,556 18,635 314.73 4,852 279.66 0.1849
2024-02-12 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 5,921 -1,912 -24.41 1,278 -0.78 0.0538
2023-11-08 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 7,833 -1,281 -14.06 1,288 -27.11 0.0604
2023-08-09 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 9,114 -1,963 -17.72 1,768 -21.92 0.0810
2023-05-10 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 11,077 -85 -0.76 2,263 -4.27 0.1115
2023-02-06 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 11,162 -270 -2.36 2,365 -3.67 0.1198
2022-11-15 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 11,432 -8,729 -43.30 2,454 -52.38 0.1355
2022-08-12 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 20,161 1,775 9.65 5,153 11.56 0.2711
2022-05-09 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 18,386 762 4.32 4,619 -10.40 0.1896
2022-02-11 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 17,624 8,751 98.63 5,155 118.90 0.2225
2021-11-12 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 8,873 3,949 80.20 2,355 77.07 0.1105
2021-08-06 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,924 27 0.55 1,330 13.58 0.0619
2021-05-13 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,897 363 8.01 1,171 15.03 0.0577
2021-02-11 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 4,534 239 5.56 1,018 -1.93 0.0559
2020-12-14 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,295 316 7.94 1,038 0.87 0.0643
2020-08-13 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,979 113 2.92 1,029 22.21 0.0668
2020-05-13 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,866 -855 -18.11 842 -22.40 0.0647
2020-02-14 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 4,721 730 18.29 1,085 22.88 0.0598
2019-11-12 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,991 433 12.17 883 21.46 0.0529
2019-08-12 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,558 0 0.00 727 3.71 0.0441
2019-05-13 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,558 1,001 39.15 701 73.51 0.0434
2019-02-12 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,557 691 37.03 404 49.08 0.0284
2018-11-13 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,866 -80 -4.11 271 -3.56 0.0161
2018-08-13 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,946 80 4.29 281 3.69 0.0165
2018-05-08 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,866 -80 -4.11 271 -2.52 0.0168
2018-02-13 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,946 20 1.04 278 6.11 0.0157
2017-11-13 2017-09-30 13F/A-1 American Tower COM 03027X100 1,926 -175 -8.33 262 -6.09 0.0170
2017-11-09 2017-09-30 13F American Tower COM 03027X100 2,101 0 279
2017-08-09 2017-06-30 13F American Tower COM 03027X100 2,101 0 0.00 279 9.41 0.0183
2017-05-11 2017-03-31 13F American Tower COM 03027X100 2,101 112 5.63 255 21.43 0.0168
2017-02-07 2016-12-31 13F American Tower COM 03027X100 1,989 0 0.00 210 -6.25 0.0143
2016-11-14 2016-09-30 13F American Tower COM 03027X100 1,989 1,989 224 0.0158
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.