아메리칸 타워 코퍼레이션
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionPhiladelphia Trust Co
Latest Disclosed Ownership1,503 shares
Latest Disclosed Value $ 259
Philadelphia Trust Co reports 21.02% decrease in ownership of AMT / American Tower Corporation

On May 13, 2026 - Philadelphia Trust Co filed a 13F-HR form disclosing ownership of 1,503 shares of American Tower Corporation (MX:AMT) valued at $259 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,903 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)
2026-05-13 2026-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,503 -400 -21.02 0 0.0183
2026-02-12 2025-12-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,903 0 0.00 0 0.0230
2025-11-13 2025-09-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,903 0 0.00 0 0.0258
2025-08-13 2025-06-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,903 0 0.00 0 0.0323
2025-05-13 2025-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,903 0 0.00 0 0.0354
2025-02-13 2024-12-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,903 -10 -0.52 0 0.0256
2024-11-13 2024-09-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,913 450 30.76 0 0.0323
2024-08-13 2024-06-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,463 -223 -13.23 0 0.0221
2024-05-13 2024-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,686 0 0.00 0 0.0267
2024-02-09 2023-12-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,686 0 0.00 0 0.0342
2023-11-09 2023-09-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,686 0 0.00 0 0.0285
2023-08-07 2023-06-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,686 -275 -14.02 0 0.0310
2023-05-12 2023-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,961 0 0.00 0 0.0408
2023-02-07 2022-12-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,961 0 0.00 0 -100.00 0.0444
2022-11-10 2022-09-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,961 223 12.83 421 -5.18 0.0476
2022-08-15 2022-06-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,738 -16 -0.91 444 0.68 0.0456
2022-05-05 2022-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,754 0 0.00 441 -14.04 0.0348
2022-02-09 2021-12-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,754 10 0.57 513 10.80 0.0371
2021-11-15 2021-09-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,744 16 0.93 463 -0.86 0.0341
2021-08-13 2021-06-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,728 500 40.72 467 58.84 0.0322
2021-05-14 2021-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,228 -20 -1.60 294 5.00 0.0226
2021-02-08 2020-12-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,248 -32 -2.50 280 -9.39 0.0228
2020-11-12 2020-09-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,280 -14 -1.08 309 -7.76 0.0298
2020-08-14 2020-06-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,294 -119 -8.42 335 8.77 0.0353
2020-05-12 2020-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,413 -275 -16.29 308 -20.62 0.0388
2020-02-10 2019-12-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,688 -35 -2.03 388 1.84 0.0333
2019-11-12 2019-09-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,723 114 7.09 381 15.81 0.0354
2019-08-08 2019-06-30 13F AMERICAN TOWER CORP REIT COM 03027X100 1,609 26 1.64 329 5.45 0.0290
2019-05-15 2019-03-31 13F AMERICAN TOWER CORP REIT COM 03027X100 1,583 1,583 312 0.0275
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.