American Tower Corporation
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionFinancial Advisory Service, Inc.
Latest Disclosed Ownership1,440 shares
Latest Disclosed Value $ 252,886
Financial Advisory Service, Inc. ownership in AMT / American Tower Corporation

On February 18, 2026 - Financial Advisory Service, Inc. filed a 13F-HR form disclosing ownership of 1,440 shares of American Tower Corporation (MX:AMT) valued at $252,886 USD as of December 31, 2025. The entity filed a previous 13F-HR on August 14, 2025 disclosing 0 shares of American Tower Corporation.

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)
2026-02-18 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,440 1,440 253 0.0163
2025-08-14 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 0 -100.00 0
2025-05-05 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 12,292 1,046 9.30 2,675 29.68 0.2182
2025-02-14 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 11,246 406 3.75 2,063 -18.21 0.1732
2024-10-17 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 10,840 436 4.19 2,521 24.68 0.2005
2024-07-29 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 10,404 741 7.67 2,022 5.92 0.1748
2024-04-29 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 9,663 392 4.23 1,909 -4.60 0.1692
2024-01-23 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 9,271 9,271 2,001 0.1902
2023-10-23 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 0 -1,083 -100.00 0 -100.00
2023-08-08 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,083 -399 -26.92 210 -30.46 0.0266
2023-05-11 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,482 -43 -2.82 303 -6.50 0.0328
2023-02-01 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,525 18 1.19 323 -0.31 0.0366
2022-10-20 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,507 317 26.64 324 6.58 0.0360
2022-08-02 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,190 -161 -11.92 304 -10.32 0.0320
2022-05-04 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,351 0 0.00 339 -14.18 0.0319
2022-02-11 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,351 33 2.50 395 12.86 0.0362
2021-11-15 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,318 32 2.49 350 0.86 0.0328
2021-07-29 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,286 -30 -2.28 347 10.16 0.0326
2021-05-17 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,316 0 0.00 315 6.78 0.0328
2021-02-10 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,316 -19 -1.42 295 -8.67 0.0336
2020-11-16 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,335 19 1.44 323 -5.00 0.0441
2020-07-21 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,316 0 0.00 340 18.47 0.0501
2020-05-14 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,316 1,316 287 0.0502
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.