American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionCsenge Advisory Group
Latest Disclosed Ownership1,273 shares
Latest Disclosed Value $ 219,701
Csenge Advisory Group reports 15.08% decrease in ownership of AMT / American Tower Corporation

On April 30, 2026 - Csenge Advisory Group filed a 13F-HR form disclosing ownership of 1,273 shares of American Tower Corporation (US:AMT) valued at $219,694 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 1,499 shares of American Tower Corporation. This represents a change in shares of -15.08% during the quarter. The current value of the position is $246,847 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)
2026-04-30 2026-03-31 13F AMERICAN TOWER COM 03027X100 1,273 -226 -15.08 220 -16.73 0.0101
2026-02-06 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,499 -769 -33.91 263 -39.68 0.0119
2025-10-28 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,268 -1,663 -42.30 436 -48.28 0.0208
2025-08-06 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,931 -117 -2.89 844 -6.44 0.0444
2025-05-05 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,048 -117 -2.81 901 18.09 0.0511
2025-01-30 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 4,165 -1,711 -29.12 764 -40.76 0.0415
2024-11-13 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 5,876 -319 -5.15 1,288 6.98 0.0672
2024-07-10 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 6,195 692 12.57 1,204 10.76 0.0683
2024-05-03 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 5,503 20 0.36 1,087 -8.11 0.0609
2024-02-13 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 5,483 1,140 26.25 1,184 65.69 0.0737
2023-11-01 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,343 652 17.66 714 -0.14 0.0486
2023-07-20 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,691 793 27.36 716 20.78 0.0480
2023-05-01 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,898 84 2.99 592 -0.67 0.0428
2023-02-10 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,814 1,365 94.20 596 0.0462
2022-10-04 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,449 45 3.21 0 0.0258
2022-07-27 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,404 -488 -25.79 0 0.0301
2022-05-09 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,892 1,103 139.80 0 0.0376
2022-02-10 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 789 -251 -24.13 0 0.0189
2021-10-20 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,040 251 31.81 0 0.0233
2021-07-21 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 789 -789 -50.00 0 0.0189
2021-04-28 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,578 -189 -10.70 0 0.0388
2021-01-26 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,767 -2,645 -59.95 0 -100.00 0.0474
2020-11-09 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,412 1,132 34.51 1 -99.88 0.1457
2020-07-17 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,280 1,276 63.67 848 94.50 0.1218
2020-04-21 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,004 -367 -15.48 436 -20.00 0.1146
2020-02-05 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,371 122 5.42 545 9.66 0.1384
2019-11-14 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,249 219 10.79 497 19.76 0.1362
2019-07-30 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,030 464 29.63 415 34.74 0.1413
2019-05-07 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,566 111 7.63 308 33.91 0.1056
2019-02-07 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,455 82 5.97 230 2.68 0.0844
2018-11-19 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,373 -185 -11.87 224 -0.44 0.0870
2018-08-10 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,558 -31 -1.95 225 -2.60 0.0827
2018-05-10 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,589 29 1.86 231 3.59 0.0802
2018-02-15 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,560 1,560 223 0.0797
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.