American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionCIBC Private Wealth Group, LLC
Latest Disclosed Ownership1,166,450 shares
Latest Disclosed Value $ 204,793,552
CIBC Private Wealth Group, LLC reports 17.81% decrease in ownership of AMT / American Tower Corporation

On February 12, 2026 - CIBC Private Wealth Group, LLC filed a 13F-HR form disclosing ownership of 1,166,450 shares of American Tower Corporation (US:AMT) valued at $204,793,626 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 24, 2025 disclosing 1,419,295 shares of American Tower Corporation. This represents a change in shares of -17.81% during the quarter. The current value of the position is $212,573,848 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)
2026-02-12 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,166,450 -252,845 -17.81 204,794 -24.97 0.3462
2025-11-24 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,419,295 -28,255 -1.95 272,959 -14.68 0.4673
2025-08-12 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,447,550 -4,063 -0.28 319,937 7.69 0.5715
2025-05-14 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,451,613 -224,597 -13.40 297,087 -1.09 0.6274
2025-02-12 2024-12-31 13F American Tower COM 03027X100 1,676,210 -101,795 -5.73 300,360 -27.36 0.5446
2024-11-13 2024-09-30 13F American Tower COM 03027X100 1,778,005 -36,928 -2.03 413,493 16.14 0.7410
2024-08-09 2024-06-30 13F American Tower COM 03027X100 1,814,933 62,189 3.55 356,035 5.24 0.6678
2024-05-10 2024-03-31 13F American Tower COM 03027X100 1,752,744 102,959 6.24 338,297 -5.01 0.6627
2024-02-13 2023-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 1,649,785 -60,155 -3.52 356,155 26.66 0.7543
2023-11-13 2023-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 1,709,940 -102,155 -5.64 281,200 -19.99 0.6654
2023-11-21 2023-06-30 13F/A-1 AMERICAN TOWER CORP NEW COM COM 03027X100 1,812,095 -125,171 -6.46 351,438 -11.22 0.7684
2023-08-10 2023-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 1,812,095 -125,171 351,438 0.7685
2023-11-21 2023-03-31 13F/A-1 AMERICAN TOWER COM 03027X100 1,937,266 71,209 3.82 395,861 69.69 0.8764
2023-05-12 2023-03-31 13F AMERICAN TOWER COM 03027X100 1,937,266 71,209 395,861 0.8604
2023-06-01 2022-12-31 13F/A-2 AMERICAN TOWER COM 03027X100 1,866,057 47,224 2.60 233,292 -40.26 0.7836
2023-02-14 2022-12-31 13F/A-1 AMERICAN TOWER CORP NEW COM COM 03027X100 1,866,057 47,224 395,343 0.8277
2023-02-13 2022-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 1,866,057 47,224 395,343 0.0004
2022-11-15 2022-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 1,818,833 55,161 3.13 390,503 -13.37 1.0517
2022-08-03 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,763,672 275,555 18.52 450,777 20.58 1.1707
2022-05-16 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,488,117 36,218 2.49 373,843 -11.97 0.8160
2022-04-04 2021-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 1,451,899 28,369 1.99 424,680 12.40 0.8807
2022-02-08 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,451,899 28,369 424,680 0.8807
2021-11-12 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,423,530 10,352 0.73 377,818 -1.03 0.8790
2021-08-16 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,413,178 4,500 0.32 381,756 13.36 0.8769
2021-05-12 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,408,678 21,358 1.54 336,760 8.14 0.8479
2021-02-12 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,387,320 21,264 1.56 311,398 -5.71 0.8232
2020-11-03 2020-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 1,366,056 695,284 103.65 330,257 90.44 1.0116
2020-10-29 2020-09-30 13F AMERICAN TOWER COMMON STOCK, R 03027X100 4,379 -666,393 1,058 46,500.4050
2020-08-13 2020-06-30 13F AMERICAN TOWER Com 03027X100 670,772 -648,639 -49.16 173,422 -39.64 0.8428
2020-05-15 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,319,411 -245,374 -15.68 287,302 -20.11 1.2321
2020-01-30 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,564,785 6,617 0.42 359,619 4.37 1.1730
2019-10-16 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,558,168 -122,485 -7.29 344,558 0.28 1.2120
2019-07-31 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,680,653 120,050 7.69 343,609 11.73 1.2057
2019-05-10 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,560,603 -145,163 -8.51 307,532 13.97 1.1863
2019-02-05 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,705,766 -574,204 -25.18 269,835 -18.55 1.2031
2018-11-14 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 2,279,970 3,754 0.16 331,278 0.95 1.2559
2018-08-02 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,276,216 245,035 12.06 328,161 11.16 1.3381
2018-05-17 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,031,181 -9,756 -0.48 295,212 1.38 1.2831
2018-02-12 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,040,937 144,911 7.64 291,180 12.36 1.2350
2017-12-21 2017-09-30 13F/A-1 AMERICAN TOWER COM 03027X100 1,896,026 897,138 89.81 259,148 96.07 1.1812
2017-11-14 2017-09-30 13F AMERICAN TOWER COM 03027X100 1,896,026 897,138 259,148
2017-08-09 2017-06-30 13F AMERICAN TOWER Com 03027X100 998,888 16,149 1.64 132,171 10.66 0.8298
2017-05-10 2017-03-31 13F AMERICAN TOWER Com 03027X100 982,739 38,930 4.12 119,442 19.75 0.7503
2017-02-13 2016-12-31 13F AMERICAN TOWER Com 03027X100 943,809 233,880 32.94 99,742 23.97 0.6595
2016-11-09 2016-09-30 13F AMERICAN TOWER Com 03027X100 709,929 593,307 508.74 80,456 507.26 0.5580
2016-08-11 2016-06-30 13F AMERICAN TOWER Com 03027X100 116,622 5,701 5.14 13,249 16.68 0.0967
2016-05-11 2016-03-31 13F AMERICAN TOWER Com 03027X100 110,921 3,388 3.15 11,355 8.91 0.0877
2016-02-10 2015-12-31 13F AMERICAN TOWER Com 03027X100 107,533 3,151 3.02 10,426 13.52 0.0816
2015-11-12 2015-09-30 13F AMERICAN TOWER Com 03027X100 104,382 1,152 1.12 9,184 -4.65 0.0756
2015-08-13 2015-06-30 13F AMERICAN TOWER Com 03027X100 103,230 18 0.02 9,632 -0.87 0.0701
2015-05-11 2015-03-31 13F AMERICAN TOWER Com 03027X100 103,212 1,423 1.40 9,717 -3.43 0.0718
2015-02-12 2014-12-31 13F AMERICAN TOWER Com 03027X100 101,789 1,055 1.05 10,062 6.68 0.0770
2014-11-12 2014-09-30 13F AMERICAN TOWER Com 03027X100 100,734 -5,351 -5.04 9,432 -1.19 0.0742
2014-08-13 2014-06-30 13F AMERICAN TOWER Com 03027X100 106,085 5,918 5.91 9,546 17.26 0.0775
2014-05-14 2014-03-31 13F AMERICAN TOWER COM 03027X100 100,167 100,167 8,141 0.0692
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.