American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionAsset Dedication, LLC
Latest Disclosed Ownership0 shares
Latest Disclosed Value $ 0
Asset Dedication, LLC closes position in AMT / American Tower Corporation

On May 29, 2026 - Asset Dedication, LLC filed a 13F-HR form disclosing ownership of 0 shares of American Tower Corporation (US:AMT) valued at $0 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 26, 2026 disclosing 90 shares of American Tower Corporation. The current value of the position is $0 USD.

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)
2026-05-29 2026-03-31 13F AMERICAN TOWER CORP COM 03027X100 0 -100.00 0
2026-01-26 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 90 -153 -62.96 16 -67.39 0.0010
2025-11-20 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 243 -1,135 -82.37 47 -84.87 0.0031
2025-08-19 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,378 1,233 850.34 305 880.65 0.0221
2025-05-01 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 145 3 2.11 32 19.23 0.0026
2025-01-23 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 142 -698 -83.10 26 -86.67 0.0021
2024-10-15 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 840 -124 -12.86 195 4.28 0.0132
2024-08-06 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 964 184 23.59 187 0.0130
2024-04-16 2024-03-31 13F American Tower Equities 03027X100 780 -23 -2.86 0 0.0115
2024-02-08 2023-12-31 13F American Tower REIT 03027X100 803 23 2.95 0 0.0141
2023-11-13 2023-09-30 13F American Tower REIT 03027X100 780 -60 -7.14 0 0.0109
2023-08-22 2023-06-30 13F American Tower REIT 03027X100 840 72 9.38 0 0.0140
2023-04-24 2023-03-31 13F American Tower REIT 03027X100 768 -5 -0.65 0 0.0145
2023-01-19 2022-12-31 13F American Tower REIT 03027X100 773 5 0.65 0 -100.00 0.0165
2022-10-27 2022-09-30 13F American Tower REIT 03027X100 768 0 0.00 165 -15.82 0.0181
2022-07-19 2022-06-30 13F American Tower REIT 03027X100 768 0 0.00 196 1.55 0.0291
2022-04-21 2022-03-31 13F American Tower REIT 03027X100 768 -5 -0.65 193 -14.60 0.0215
2022-01-21 2021-12-31 13F American Tower REIT 03027X100 773 0 0.00 226 10.24 0.0272
2021-10-18 2021-09-30 13F American Tower REIT 03027X100 773 73 10.43 205 8.47 0.0270
2021-07-21 2021-06-30 13F American Tower REIT 03027X100 700 0 0.00 189 13.17 0.0282
2021-05-03 2021-03-31 13F American Tower REIT 03027X100 700 0 0.00 167 6.37 0.0377
2021-01-28 2020-12-31 13F American Tower REIT 03027X100 700 -13 -1.82 157 -8.72 0.0313
2020-10-20 2020-09-30 13F American Tower REIT 03027X100 713 13 1.86 172 -4.97 0.0379
2020-08-24 2020-06-30 13F American Tower REIT 03027X100 700 0 0.00 181 19.08 0.0493
2020-05-05 2020-03-31 13F American Tower REIT 03027X100 700 0 0.00 152 -5.59 0.0452
2020-01-31 2019-12-31 13F American Tower REIT 03027X100 700 0 0.00 161 3.87 0.0455
2019-10-17 2019-09-30 13F American Tower REIT 03027X100 700 700 0.00 155 -3.73 0.0515
2017-01-17 2016-12-31 13F American Tower REIT 03027X100 0 -8 -100.00 0 -100.00
2016-10-19 2016-09-30 13F American Tower REIT 03027X100 8 0 0.00 1 0.00 0.0007
2016-07-14 2016-06-30 13F American Tower REIT 03027X100 8 0 0.00 1 0.00 0.0007
2016-04-27 2016-03-31 13F American Tower REIT 03027X100 8 -525 -98.50 1 -98.08 0.0007
2016-02-16 2015-12-31 13F American Tower REIT 03027X100 533 533 52 0.0341
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.