American Tower Corporation
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionFinancial Management Professionals, Inc.
Latest Disclosed Ownership63 shares
Latest Disclosed Value $ 10,873
Financial Management Professionals, Inc. reports 28.57% increase in ownership of AMT / American Tower Corporation

On April 15, 2026 - Financial Management Professionals, Inc. filed a 13F-HR form disclosing ownership of 63 shares of American Tower Corporation (MX:AMT) valued at $10,873 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 27, 2026 disclosing 49 shares of American Tower Corporation. This represents a change in shares of 28.57% 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)
2026-04-15 2026-03-31 13F Amern Tower Corp REIT REIT 03027X100 63 14 28.57 11 25.00 0.0012
2026-01-27 2025-12-31 13F Amern Tower Corp REIT REIT 03027X100 49 -1,734 -97.25 9 -97.68 0.0009
2025-10-15 2025-09-30 13F Amern Tower Corp REIT REIT 03027X100 1,783 -50 -2.73 346 -15.44 0.0360
2025-07-15 2025-06-30 13F Amern Tower Corp REIT REIT 03027X100 1,833 -92 -4.78 408 -2.39 0.0459
2025-04-10 2025-03-31 13F Amern Tower Corp REIT REIT 03027X100 1,925 106 5.83 419 25.53 0.0535
2025-01-15 2024-12-31 13F Amern Tower Corp REIT REIT 03027X100 1,819 159 9.58 334 0.0422
2024-10-24 2024-09-30 13F Amern Tower Corp REIT REIT 03027X100 1,660 1,518 1,069.01 0 0.0479
2024-07-12 2024-06-30 13F Amern Tower Corp REIT REIT 03027X100 142 -10 -6.58 0 0.0038
2024-04-16 2024-03-31 13F Amern Tower Corp REIT REIT 03027X100 152 -13 -7.88 0 0.0044
2024-01-12 2023-12-31 13F Amern Tower Corp REIT REIT 03027X100 165 11 7.14 0 0.0059
2023-10-13 2023-09-30 13F Amern Tower Corp REIT REIT 03027X100 154 -35 -18.52 0 0.0044
2023-07-10 2023-06-30 13F Amern Tower Corp REIT REIT 03027X100 189 10 5.59 0 0.0062
2023-04-13 2023-03-31 13F Amern Tower Corp REIT REIT 03027X100 179 107 148.61 0 0.0071
2023-01-11 2022-12-31 13F Amern Tower Corp REIT REIT 03027X100 72 3 4.35 0 -100.00 0.0031
2022-10-27 2022-09-30 13F Amern Tower Corp REIT REIT 03027X100 69 -52 -42.98 15 -51.61 0.0034
2022-07-12 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 121 47 63.51 31 63.16 0.0075
2022-04-27 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 74 1 1.37 19 -9.52 0.0041
2022-01-28 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 73 1 1.39 21 10.53 0.0044
2021-11-02 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 72 0 0.00 19 0.00 0.0044
2021-08-05 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 72 24 50.00 19 72.73 0.0049
2021-04-26 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 48 -240 -83.33 11 -83.08 0.0029
2021-02-03 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 288 2 0.70 65 -5.80 0.0182
2020-10-26 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 286 2 0.70 69 -5.48 0.0246
2020-07-21 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 284 284 -0.70 73 5.80 0.0252
2018-08-01 2018-06-30 13F AMERICAN TOWER RET 03027X100 0 -60 -100.00 0 -100.00
2018-05-04 2018-03-31 13F AMERICAN TOWER RET 03027X100 60 0 0.00 9 12.50 0.0047
2018-01-19 2017-12-31 13F AMERICAN TOWER RET 03027X100 60 0 0.00 8 0.00 0.0034
2017-10-19 2017-09-30 13F AMERICAN TOWER RET 03027X100 60 60 8 0.0035
2016-11-07 2016-09-30 13F AMERICAN TOWER RET 03027X100 0 -33 -100.00 0 -100.00
2016-08-04 2016-06-30 13F AMERICAN TOWER RET 03027X100 33 33 0.00 3 0.0016
2015-07-30 2015-06-30 13F AMERICAN TOWER RET 03027X100 0 -90 -100.00 0 -100.00
2015-05-05 2015-03-31 13F AMERICAN TOWER RET 03027X100 90 90 8 0.0037
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.