American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionMonetary Management Group Inc
Latest Disclosed Ownership2,393 shares
Latest Disclosed Value $ 412,984
Monetary Management Group Inc reports 2.13% increase in ownership of AMT / American Tower Corporation

On May 13, 2026 - Monetary Management Group Inc filed a 13F-HR form disclosing ownership of 2,393 shares of American Tower Corporation (US:AMT) valued at $412,984 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 11, 2026 disclosing 2,343 shares of American Tower Corporation. This represents a change in shares of 2.13% during the quarter. The current value of the position is $464,027 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)
2026-05-13 2026-03-31 13F American Tower COM 03027X100 2,393 50 2.13 413 0.24 0.0986
2026-02-11 2025-12-31 13F American Tower COM 03027X100 2,343 0 0.00 411 -8.67 0.0951
2025-11-12 2025-09-30 13F American Tower COM 03027X100 2,343 0 0.00 451 -12.96 0.1035
2025-08-14 2025-06-30 13F American Tower COM 03027X100 2,343 -200 -7.86 518 -6.51 0.1275
2025-05-14 2025-03-31 13F American Tower COM 03027X100 2,543 0 0.00 553 18.67 0.1495
2025-02-13 2024-12-31 13F American Tower COM 03027X100 2,543 -250 -8.95 466 -28.20 0.1212
2024-11-13 2024-09-30 13F American Tower COM 03027X100 2,793 -475 -14.53 650 2.20 0.1669
2024-07-16 2024-06-30 13F American Tower COM 03027X100 3,268 -1,300 -28.46 635 -29.60 0.1679
2024-05-13 2024-03-31 13F American Tower COM 03027X100 4,568 -2,200 -32.51 903 -38.26 0.2515
2024-02-14 2023-12-31 13F American Tower COM 03027X100 6,768 -100 -1.46 1,461 29.41 0.4557
2023-11-09 2023-09-30 13F American Tower COM 03027X100 6,868 -600 -8.03 1,129 -22.03 0.3765
2023-08-11 2023-06-30 13F American Tower COM 03027X100 7,468 -1,400 -15.79 1,448 -20.09 0.4439
2023-05-11 2023-03-31 13F American Tower COM 03027X100 8,868 1,400 18.75 1,812 14.54 0.5332
2023-02-13 2022-12-31 13F American Tower COM 03027X100 7,468 -200 -2.61 1,582 -3.89 0.4940
2022-11-14 2022-09-30 13F American Tower COM 03027X100 7,668 -150 -1.92 1,646 -17.62 0.5425
2022-08-11 2022-06-30 13F American Tower COM 03027X100 7,818 0 0.00 1,998 1.73 0.6263
2022-05-12 2022-03-31 13F American Tower COM 03027X100 7,818 -200 -2.49 1,964 -16.25 0.5202
2022-02-14 2021-12-31 13F American Tower COM 03027X100 8,018 200 2.56 2,345 13.01 0.5802
2021-11-12 2021-09-30 13F American Tower COM 03027X100 7,818 800 11.40 2,075 9.44 0.5706
2021-08-12 2021-06-30 13F American Tower COM 03027X100 7,018 100 1.45 1,896 14.63 0.5714
2021-05-17 2021-03-31 13F American Tower COM 03027X100 6,918 -50 -0.72 1,654 5.75 0.5202
2021-02-12 2020-12-31 13F American Tower COM 03027X100 6,968 480 7.40 1,564 -0.26 0.5154
2020-11-12 2020-09-30 13F American Tower COM 03027X100 6,488 1,968 43.54 1,568 34.13 0.5586
2020-08-13 2020-06-30 13F American Tower COM 03027X100 4,520 0 0.00 1,169 18.80 0.4418
2020-05-14 2020-03-31 13F American Tower COM 03027X100 4,520 0 0.00 984 -5.29 0.4355
2020-02-13 2019-12-31 13F American Tower COM 03027X100 4,520 3,845 569.63 1,039 597.32 0.3797
2019-11-12 2019-09-30 13F American Tower COM 03027X100 675 0 0.00 149 7.97 0.0564
2019-08-13 2019-06-30 13F American Tower COM 03027X100 675 0 0.00 138 3.76 0.0530
2019-05-14 2019-03-31 13F American Tower COM 03027X100 675 0 0.00 133 24.30 0.0527
2019-02-13 2018-12-31 13F American Tower COM 03027X100 675 0 0.00 107 9.18 0.0483
2018-11-13 2018-09-30 13F American Tower COM 03027X100 675 0 0.00 98 1.03 0.0374
2018-08-13 2018-06-30 13F American Tower COM 03027X100 675 0 0.00 97 -1.02 0.0396
2018-05-14 2018-03-31 13F American Tower COM 03027X100 675 0 0.00 98 2.08 0.0406
2018-02-14 2017-12-31 13F American Tower COM 03027X100 675 0 0.00 96 4.35 0.0387
2017-11-13 2017-09-30 13F American Tower COM 03027X100 675 0 0.00 92 3.37 0.0388
2017-08-14 2017-06-30 13F American Tower COM 03027X100 675 -100 -12.90 89 -5.32 0.0364
2017-05-15 2017-03-31 13F American Tower COM 03027X100 775 -100 -11.43 94 2.17 0.0409
2017-02-13 2016-12-31 13F American Tower COM 03027X100 875 700 400.00 92 360.00 0.0425
2016-11-10 2016-09-30 13F American Tower COM 03027X100 175 0 0.00 20 0.00 0.0093
2016-08-12 2016-06-30 13F American Tower COM 03027X100 175 0 0.00 20 11.11 0.0093
2016-05-11 2016-03-31 13F American Tower COM 03027X100 175 75 75.00 18 80.00 0.0088
2016-02-11 2015-12-31 13F American Tower COM 03027X100 100 -1,000 -90.91 10 -89.69 0.0048
2015-11-25 2015-09-30 13F American Tower COM 03027X100 1,100 0 0.00 97 -5.83 0.0485
2015-08-11 2015-06-30 13F American Tower COM 03027X100 1,100 0 0.00 103 -0.96 0.0465
2015-05-12 2015-03-31 13F American Tower COM 03027X100 1,100 0 0.00 104 -4.59 0.0459
2015-02-12 2014-12-31 13F American Tower COM 03027X100 1,100 100 10.00 109 15.96 0.0484
2014-11-06 2014-09-30 13F American Tower COM 03027X100 1,000 0 0.00 94 4.44 0.0436
2014-08-12 2014-06-30 13F American Tower COM 03027X100 1,000 1,000 90 0.0421
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.