아메리칸 타워 코퍼레이션
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionSimmons Bank
Latest Disclosed Ownership17,062 shares
Latest Disclosed Value $ 2,944,562
Simmons Bank reports 8.86% increase in ownership of AMT / American Tower Corporation

On April 23, 2026 - Simmons Bank filed a 13F-HR form disclosing ownership of 17,062 shares of American Tower Corporation (MX:AMT) valued at $2,944,562 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 15,673 shares of American Tower Corporation. This represents a change in shares of 8.86% during the quarter.

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)
2026-04-23 2026-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 17,062 1,389 8.86 2,945 7.02 0.0591
2026-02-05 2025-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 15,673 421 2.76 2,752 -6.21 0.1840
2025-11-04 2025-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 15,252 370 2.49 2,933 -10.82 0.1955
2025-08-06 2025-06-30 13F AMERICAN TOWER COMMON STOCK 03027X100 14,882 182 1.24 3,289 2.85 0.2345
2025-04-29 2025-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 14,700 62 0.42 3,199 19.15 0.2411
2025-02-05 2024-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 14,638 -1,408 -8.77 2,685 -28.06 0.1963
2024-11-05 2024-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 16,046 385 2.46 3,732 22.57 0.2702
2024-07-26 2024-06-30 13F AMERICAN TOWER COMMON STOCK 03027X100 15,661 77 0.49 3,044 -1.14 0.2298
2024-05-14 2024-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 15,584 324 2.12 3,079 -6.53 0.2314
2024-02-06 2023-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 15,260 -452 -2.88 3,294 27.53 0.2690
2023-10-26 2023-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 15,712 -462 -2.86 2,584 -17.63 0.2290
2023-08-03 2023-06-30 13F AMERICAN TOWER COMMON STOCK 03027X100 16,174 -2,438 -13.10 3,137 -17.54 0.2635
2023-04-28 2023-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 18,612 2,152 13.07 3,803 9.06 0.3246
2023-02-08 2022-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 16,460 317 1.96 3,487 0.61 0.2997
2022-10-27 2022-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 16,143 -3,977 -19.77 3,466 -32.61 0.3232
2022-07-29 2022-06-30 13F AMERICAN TOWER COMMON STOCK 03027X100 20,120 2,096 11.63 5,143 13.58 0.4508
2022-04-21 2022-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 18,024 773 4.48 4,528 -10.27 0.3391
2022-01-28 2021-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 17,251 2,223 14.79 5,046 26.50 0.3533
2021-10-26 2021-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 15,028 780 5.47 3,989 3.64 0.2896
2021-08-05 2021-06-30 13F AMERICAN TOWER COMMON STOCK 03027X100 14,248 888 6.65 3,849 20.54 0.2781
2021-05-06 2021-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 13,360 1,080 8.79 3,193 15.81 0.2410
2021-02-08 2020-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 12,280 -310 -2.46 2,757 -9.40 0.2188
2020-11-13 2020-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 12,590 -1,832 -12.70 3,043 -18.40 0.2497
2020-08-14 2020-06-30 13F AMERICAN TOWER COMMON STOCK 03027X100 14,422 88 0.61 3,729 19.48 0.3078
2020-05-14 2020-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 14,334 5,703 66.08 3,121 57.31 0.2715
2020-01-31 2019-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 8,631 34 0.40 1,984 4.37 0.1779
2019-11-13 2019-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 8,597 3,446 66.90 1,901 80.36 0.1870
2019-08-13 2019-06-30 13F AMERICAN TOWER COMMON STOCK 03027X100 5,151 -25 -0.48 1,054 3.33 0.1020
2019-05-13 2019-03-31 13F AMERICAN TOWER COMMON STOCK 03027X100 5,176 521 11.19 1,020 38.40 0.0993
2019-01-24 2018-12-31 13F AMERICAN TOWER COMMON STOCK 03027X100 4,655 300 6.89 737 16.43 0.0825
2018-11-13 2018-09-30 13F AMERICAN TOWER COMMON STOCK 03027X100 4,355 4,355 633 0.0623
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.