아메리칸 타워 코퍼레이션
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionUtah Retirement Systems
Latest Disclosed Ownership76,050 shares
Latest Disclosed Value $ 13,124,709
Utah Retirement Systems reports 6.73% decrease in ownership of AMT / American Tower Corporation

On May 15, 2026 - Utah Retirement Systems filed a 13F-HR form disclosing ownership of 76,050 shares of American Tower Corporation (MX:AMT) valued at $13,124,709 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 81,536 shares of American Tower Corporation. This represents a change in shares of -6.73% 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)
2026-05-15 2026-03-31 13F AMERICAN TOWER COM 03027X100 76,050 -5,486 -6.73 13,125 -8.32 0.1341
2026-02-17 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 81,536 4,237 5.48 14,315 -3.71 0.1362
2025-11-14 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 77,299 301 0.39 14,866 -12.65 0.1444
2025-08-14 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 76,998 -305 -0.39 17,018 1.17 0.1777
2025-05-15 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 77,303 -141 -0.18 16,821 18.42 0.1940
2025-02-14 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 77,444 100 0.13 14,204 -21.03 0.1565
2024-11-14 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 77,344 400 0.52 17,987 20.27 0.2030
2024-08-14 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 76,944 -3,800 -4.71 14,956 -6.26 0.1776
2024-05-15 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 80,744 0 0.00 15,954 -8.47 0.1865
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 80,744 600 0.75 17,431 32.26 0.2220
2023-11-14 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 80,144 200 0.25 13,180 -15.00 0.1884
2023-08-14 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 79,944 -2,700 -3.27 15,504 -8.19 0.2150
2023-05-16 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 82,644 200 0.24 16,887 -3.32 0.2442
2023-02-15 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 82,444 -800 -0.96 17,467 -2.27 0.2770
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 83,244 446 0.54 17,872 -15.55 0.2980
2022-08-16 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 82,798 2,300 2.86 21,162 4.65 0.3388
2022-05-13 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 80,498 -1,400 -1.71 20,222 -15.58 0.2691
2022-02-14 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 81,898 200 0.24 23,955 10.48 0.2960
2021-11-16 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 81,698 -4,300 -5.00 21,683 -6.66 0.2932
2021-08-16 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 85,998 1,300 1.53 23,231 14.73 0.2990
2021-05-17 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 84,698 -3,800 -4.29 20,248 1.93 0.2822
2021-02-16 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 88,498 -5,619 -5.97 19,864 -12.69 0.2819
2020-11-16 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 94,117 800 0.86 22,751 -5.70 0.3776
2020-08-13 2020-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 93,317 -900 -0.96 24,126 17.60 0.4428
2020-08-13 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 93,317 -900 24,126 442,809.7108
2020-05-15 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 94,217 0 0.00 20,516 -5.26 0.4438
2020-02-12 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 94,217 300 0.32 21,654 4.27 0.3807
2019-11-14 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 93,917 -200 -0.21 20,767 7.93 0.3951
2019-08-14 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 94,117 -842 -0.89 19,242 2.83 0.3685
2019-05-15 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 94,959 1,758 1.89 18,713 26.93 0.3709
2019-02-08 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 93,201 200 0.22 14,743 9.10 0.3334
2018-11-13 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 93,001 1,400 1.53 13,513 2.32 0.2618
2018-08-10 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 91,601 3,300 3.74 13,206 2.91 0.2733
2018-05-15 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 88,301 200 0.23 12,833 2.09 0.2730
2018-02-14 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 88,101 1,600 1.85 12,570 6.32 0.2642
2017-11-13 2017-09-30 13F AMERICAN TOWER CORP COM 03027X100 86,501 200 0.23 11,823 3.53 0.2659
2017-08-08 2017-06-30 13F AMERICAN TOWER CORP COM 03027X100 86,301 -43 -0.05 11,420 8.81 0.2662
2017-05-11 2017-03-31 13F AMERICAN TOWER CORP COM 03027X100 86,344 300 0.35 10,495 15.42 0.2511
2017-02-10 2016-12-31 13F AMERICAN TOWER CORP COM 03027X100 86,044 -200 -0.23 9,093 -6.97 0.2287
2016-11-07 2016-09-30 13F AMERICAN TOWER CORP COM 03027X100 86,244 -400 -0.46 9,774 -0.71 0.2530
2016-08-03 2016-06-30 13F AMERICAN TOWER CORP COM 03027X100 86,644 -300 -0.35 9,844 10.61 0.2623
2016-05-10 2016-03-31 13F AMERICAN TOWER CORP COM 03027X100 86,944 100 0.12 8,900 5.71 0.2413
2016-02-11 2015-12-31 13F AMERICAN TOWER CORP COM 03027X100 86,844 100 0.12 8,419 10.31 0.2282
2015-11-03 2015-09-30 13F AMERICAN TOWER CORP COM 03027X100 86,744 800 0.93 7,632 -4.81 0.2185
2015-08-11 2015-06-30 13F AMERICAN TOWER CORP COM 03027X100 85,944 -100 -0.12 8,018 -1.02 0.2131
2015-05-14 2015-03-31 13F AMERICAN TOWER CORP COM 03027X100 86,044 17,515 25.56 8,101 19.59 0.2128
2015-02-11 2014-12-31 13F AMERICAN TOWER CORP COM 03027X100 68,529 0 0.00 6,774 5.58 0.1862
2014-11-06 2014-09-30 13F AMERICAN TOWER CORP COM 03027X100 68,529 -100 -0.15 6,416 3.89 0.1840
2014-08-08 2014-06-30 13F AMERICAN TOWER CORP COM 03027X100 68,629 -2,400 -3.38 6,176 6.21 0.1769
2014-05-08 2014-03-31 13F AMERICAN TOWER CORP COM 03027X100 71,029 500 0.71 5,815 3.29 0.1677
2014-02-05 2013-12-31 13F AMERICAN TOWER CORP COM 03027X100 70,529 0 0.00 5,630 7.69 0.1666
2013-11-06 2013-09-30 13F AMERICAN TOWER CORP COM 03027X100 70,529 -600 -0.84 5,228 0.44 0.1692
2013-08-02 2013-06-30 13F AMERICAN TOWER CORP COM 03027X100 71,129 71,129 5,205 0.1759
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.