American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionClarius Group, LLC
Latest Disclosed Ownership1,571 shares
Latest Disclosed Value $ 275,820
Clarius Group, LLC reports 6.54% decrease in ownership of AMT / American Tower Corporation

On January 14, 2026 - Clarius Group, LLC filed a 13F-HR form disclosing ownership of 1,571 shares of American Tower Corporation (US:AMT) valued at $275,820 USD as of December 31, 2025. The entity filed a previous 13F-HR on October 14, 2025 disclosing 1,681 shares of American Tower Corporation. This represents a change in shares of -6.54% during the quarter. The current value of the position is $286,299 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)
2026-01-14 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,571 -110 -6.54 276 -14.86 0.0157
2025-10-14 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,681 -717 -29.90 323 -39.06 0.0191
2025-07-22 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,398 -202 -7.77 530 -6.19 0.0309
2025-04-18 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,600 -177 -6.37 566 11.00 0.0355
2025-01-16 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,777 52 1.91 509 -19.33 0.0348
2024-10-09 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,725 -517 -15.95 631 -34.00 0.0443
2024-07-11 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,242 -748 -18.75 956 -14.11 0.0678
2024-04-17 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,990 -325 -7.53 1,114 19.55 0.0769
2024-01-29 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 4,315 -223 -4.91 932 24.80 0.0772
2023-10-19 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,538 -296 -6.12 746 -20.38 0.0711
2023-08-10 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,834 10 0.21 938 -4.87 0.0725
2023-04-17 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,824 -633 -11.60 986 98,400.00 0.0837
2023-01-25 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 5,457 -1,094 -16.70 1 -99.93 0.1041
2022-10-24 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 6,551 1,068 19.48 1,406 0.36 0.1405
2022-08-10 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 5,483 688 14.35 1,401 -0.14 0.1398
2022-04-08 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,795 0 0.00 1,403 0.00 0.1110
2022-02-02 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 4,795 36 0.76 1,403 11.08 0.1110
2021-10-18 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,759 213 4.69 1,263 2.85 0.1131
2021-08-06 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,546 107 2.41 1,228 15.74 0.1102
2021-04-27 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,439 83 1.91 1,061 8.49 0.1039
2021-01-15 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 4,356 -137 -3.05 978 -9.94 0.1054
2020-10-09 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,493 -16 -0.35 1,086 -6.86 0.1395
2020-07-08 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,509 633 16.33 1,166 38.15 0.1634
2020-04-24 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,876 106 2.81 844 -4.85 0.1592
2020-01-22 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,770 -393 -9.44 887 -3.69 0.1405
2019-10-22 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,163 740 21.62 921 31.57 0.1690
2019-08-02 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,423 1,195 53.64 700 59.45 0.1408
2019-05-14 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,228 2,228 439 0.1068
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.