아메리칸 타워 코퍼레이션
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionVanguard Group Inc
Latest Disclosed Ownership61,022,228 shares
Ownership 13.09%
Vanguard Group Inc ownership in AMT / American Tower Corporation

2024-02-13 - Vanguard Group Inc has filed an SC 13G/A form with the Securities and Exchange Commission (SEC) disclosing ownership of 61,022,228 shares of American Tower Corporation (MX:AMT). This represents 13.09 percent ownership of the company. In their previous filing dated 2023-02-09 , Vanguard Group Inc had reported owning 61,431,926 shares, indicating a decrease of -0.67 percent.

Institutional Ownership: 13D/G Filings

This table shows a history of the 13D/G filings made by the investor and/or investor group. Note that the share values in this table are not directly comparable to any numbers shown in the 13F table (if any).

File
Date		Effective
Date		Form Prev
Shares		 Latest
Shares		 ΔShares
(Percent)		 Ownership
(Percent)		 ΔOwnership
(Percent)
2024-02-13 2024-02-13 13G/A 61,431,926 61,022,228 -0.67 13.09 -0.76
2023-02-09 2023-02-09 13G/A 59,157,936 61,431,926 3.84 13.19 1.54
2022-02-09 2022-02-09 13G/A 56,124,669 59,157,936 5.40 12.99 2.85
2021-02-10 2021-02-10 13G/A 58,454,147 56,124,669 -3.99 12.63 -4.25
2020-02-11 2020-02-11 13G/A 56,220,489 58,454,147 3.97 13.19 3.37
2019-02-11 2019-02-11 13G/A 48,915,793 56,220,489 14.93 12.76 15.27
2018-06-11 2018-06-11 13G/A 29,709,130 48,915,793 64.65 11.07 59.97
2018-02-12 2018-02-12 13G/A 26,552,536 29,709,130 11.89 6.92 11.08
2017-02-09 2017-02-09 13G/A 24,566,826 26,552,536 8.08 6.23 7.60
2016-02-10 2016-02-10 13G/A 24,566,826 5.79
2015-02-11 2015-02-11 13G 21,043,810 5.30

Important Note: One of the primary uses of the 13D/G filings is to evaluate the ability of a firm to control a company (ie, the "beneficial ownership"). To that end, firms are required to report not just direct holdings in companies, but indirect holdings that they control. For investment firms, these indirect holdings can include shares in funds they manage, advisory accounts, and in the case of activist campaigns, pledged votes. Therefore, share counts listed in 13D/G filings can differ significantly than share counts listed in 13F filings.

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)
2026-01-29 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 63,757,586 117,418 0.18 11,193,919 -8.54 0.1623
2025-11-07 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 63,640,168 611,801 0.97 12,239,277 -12.14 0.1832
2025-08-11 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 63,028,367 218,881 0.35 13,930,530 1.93 0.2255
2025-05-09 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 62,809,486 434,118 0.70 13,667,344 19.47 0.2471
2025-02-11 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 62,375,368 -110,448 -0.18 11,440,266 -21.27 0.1993
2024-11-13 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 62,485,816 -55,523 -0.09 14,531,701 19.54 0.2602
2024-08-13 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 62,541,339 550,286 0.89 12,156,785 -0.75 0.2335
2024-05-10 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 61,991,053 965,938 1.58 12,248,812 -7.02 0.2426
2024-03-11 2023-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 61,025,115 94,532 0.16 13,174,102 31.48 0.2878
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 61,025,115 94,532 13,174,102 0.2501
2023-12-18 2023-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 60,930,583 196,942 0.32 10,020,034 -14.93 0.2461
2023-11-14 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 60,930,583 196,942 10,020,034 0.2461
2023-08-14 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 60,733,641 -924,849 -1.50 11,778,682 -6.51 0.2793
2023-07-14 2023-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 61,658,490 226,564 0.37 12,599,296 -3.19 0.3208
2023-05-15 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 61,655,805 223,879 12,598,747 0.3209
2023-02-10 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 61,431,926 711,262 1.17 13,014,968 -0.17 0.3544
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 60,720,664 406,906 0.67 13,036,726 -15.43 0.3834
2022-08-12 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 60,313,758 331,414 0.55 15,415,593 2.30 0.4334
2022-05-13 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 59,982,344 824,408 1.39 15,068,764 -12.92 0.3564
2022-02-14 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 59,157,936 321,641 0.55 17,303,697 10.81 0.3929
2021-11-12 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 58,836,295 917,837 1.58 15,615,742 -0.19 0.3879
2021-08-13 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 57,918,458 1,177,194 2.07 15,646,092 15.35 0.3894
2021-05-14 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 56,741,264 616,595 1.10 13,564,567 7.67 0.3669
2021-02-12 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 56,124,669 -243,627 -0.43 12,597,744 -7.55 0.3654
2020-11-16 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 56,368,296 -1,021,022 -1.78 13,625,907 -8.17 0.4509
2020-08-14 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 57,389,318 -1,143,313 -1.95 14,837,435 16.41 0.5263
2020-05-15 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 58,532,631 78,484 0.13 12,745,480 -5.12 0.5432
2020-02-14 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 58,454,147 448,172 0.77 13,433,931 4.73 0.4581
2019-11-14 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 58,005,975 511,041 0.89 12,826,860 9.12 0.4757
2019-08-14 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 57,494,934 248,968 0.43 11,754,838 4.20 0.4422
2019-05-15 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 57,245,966 1,025,477 1.82 11,280,890 26.84 0.4425
2019-02-14 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 56,220,489 -414,949 -0.73 8,893,519 8.07 0.3996
2018-12-13 2018-09-30 13F/A-2 AMERICAN TOWER CORP COM 03027X100 56,635,438 3,579,249 6.75 8,229,130 7.58 0.3216
2018-11-23 2018-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 56,635,438 0 8,229,130 0.3216
2018-11-14 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 56,635,438 3,579,249 8,229,130
2018-08-14 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 53,056,189 12,754,536 31.65 7,649,111 30.59 0.3200
2018-05-15 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 40,301,653 10,592,523 35.65 5,857,443 38.19 0.2562
2018-02-14 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 29,709,130 486,198 1.66 4,238,601 6.12 0.1853
2017-11-14 2017-09-30 13F AMERICAN TOWER CORP COM 03027X100 29,222,932 780,430 2.74 3,994,190 6.13 0.1867
2017-08-24 2017-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 28,442,502 881,020 3.20 3,763,512 12.35 0.1854
2017-08-11 2017-06-30 13F AMERICAN TOWER CORP COM 03027X100 28,442,502 881,020 3,763,512
2017-05-12 2017-03-31 13F AMERICAN TOWER CORP COM 03027X100 27,561,482 1,008,946 3.80 3,349,823 19.38 0.1722
2017-02-14 2016-12-31 13F AMERICAN TOWER CORP COM 03027X100 26,552,536 533,794 2.05 2,806,072 -4.84 0.1565
2016-11-14 2016-09-30 13F AMERICAN TOWER CORP COM 03027X100 26,018,742 251,194 0.97 2,948,704 0.73 0.1732
2016-08-10 2016-06-30 13F AMERICAN TOWER CORP COM 03027X100 25,767,548 441,783 1.74 2,927,451 12.92 0.1818
2016-05-13 2016-03-31 13F AMERICAN TOWER CORP COM 03027X100 25,325,765 758,939 3.09 2,592,598 8.85 0.1680
2016-02-08 2015-12-31 13F AMERICAN TOWER CORP COM 03027X100 24,566,826 629,964 2.63 2,381,754 13.10 0.1601
2015-11-12 2015-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 23,936,862 405,368 1.72 2,105,965 -4.07 0.0894
2015-11-12 2015-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 23,936,862 405,368 2,105,965 0.0894
2015-11-12 2015-09-30 13F AMERICAN TOWER CORP COM 03027X100 35,514,996 2,561,895
2015-08-13 2015-06-30 13F AMERICAN TOWER CORP COM 03027X100 23,531,494 427,461 1.85 2,195,253 0.92 0.1484
2015-05-15 2015-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 23,104,033 2,060,223 9.79 2,175,245 4.57 0.1475
2015-05-14 2015-03-31 13F AMERICAN TOWER CORP COM 03027X100 23,104,033 2,175,245
2015-02-12 2014-12-31 13F AMERICAN TOWER CORP COM 03027X100 21,043,810 654,009 3.21 2,080,181 8.96 0.1498
2014-11-12 2014-09-30 13F AMERICAN TOWER CORP COM 03027X100 20,389,801 464,473 2.33 1,909,097 6.48 0.1488
2014-08-11 2014-06-30 13F AMERICAN TOWER CORP COM 03027X100 19,925,328 393,902 2.02 1,792,882 12.12 0.1413
2014-05-13 2014-03-31 13F AMERICAN TOWER CORP COM 03027X100 19,531,426 482,163 2.53 1,599,037 5.16 0.1345
2014-02-12 2013-12-31 13F AMERICAN TOWER CORP COM 03027X100 19,049,263 258,076 1.37 1,520,512 9.15 0.1337
2013-11-07 2013-09-30 13F AMERICAN TOWER CORP COM 03027X100 18,791,187 277,995 1.50 1,392,991 2.83 0.1360
2013-08-13 2013-06-30 13F AMERICAN TOWER CORP COM 03027X100 18,513,192 18,513,192 1,354,610 0.1423
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.