American Tower Corporation
IT ˙ BIT ˙ US03027X1000
159,75 € 0,00 (0,00%)
2026-06-04
AKTIENPREIS
SecurityIT:1AMT / American Tower Corporation
InstitutionDf Dent & Co Inc
Latest Disclosed Ownership131,882 shares
Latest Disclosed Value $ 22,760,170
Df Dent & Co Inc reports 17.60% decrease in ownership of 1AMT / American Tower Corporation

On May 15, 2026 - Df Dent & Co Inc filed a 13F-HR form disclosing ownership of 131,882 shares of American Tower Corporation (IT:1AMT) valued at $19,083,325 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 160,045 shares of American Tower Corporation. This represents a change in shares of -17.60% during the quarter. The current value of the position is $21,068,150 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)
2026-05-15 2026-03-31 13F AMERICAN TOWER COM 03027X100 131,882 -28,163 -17.60 22,760 -19.00 0.4359
2026-02-17 2025-12-31 13F AMERICAN TOWER COM 03027X100 160,045 -15,618 -8.89 28,099 -16.83 0.4044
2025-11-14 2025-09-30 13F AMERICAN TOWER COM 03027X100 175,663 -17,432 -9.03 33,783 -20.84 0.4365
2025-08-14 2025-06-30 13F AMERICAN TOWER COM 03027X100 193,095 -6,711 -3.36 42,678 -1.84 0.5416
2025-05-15 2025-03-31 13F AMERICAN TOWER COM 03027X100 199,806 -15,317 -7.12 43,478 10.19 0.5806
2025-02-12 2024-12-31 13F AMERICAN TOWER COM 03027X100 215,123 -6,271 -2.83 39,456 -23.37 0.4995
2024-11-15 2024-09-30 13F AMERICAN TOWER COM 03027X100 221,394 -16,516 -6.94 51,487 11.34 0.6263
2024-08-14 2024-06-30 13F AMERICAN TOWER COM 03027X100 237,910 -22,487 -8.64 46,245 -10.12 0.5978
2024-05-15 2024-03-31 13F AMERICAN TOWER COM 03027X100 260,397 -26,766 -9.32 51,452 -17.00 0.6279
2024-02-14 2023-12-31 13F AMERICAN TOWER COM 03027X100 287,163 -29,402 -9.29 61,993 19.08 0.8216
2023-11-14 2023-09-30 13F AMERICAN TOWER COM 03027X100 316,565 -88,763 -21.90 52,059 -33.77 0.7626
2023-08-14 2023-06-30 13F AMERICAN TOWER COM 03027X100 405,328 -15,882 -3.77 78,609 -8.67 1.0639
2023-05-15 2023-03-31 13F AMERICAN TOWER COM 03027X100 421,210 -26,557 -5.93 86,070 -9.27 1.2136
2023-02-15 2022-12-31 13F AMERICAN TOWER COM 03027X100 447,767 -13,263 -2.88 94,864 -4.16 1.4176
2022-11-14 2022-09-30 13F AMERICAN TOWER COM 03027X100 461,030 -90,829 -16.46 98,983 -29.82 1.5289
2022-08-15 2022-06-30 13F AMERICAN TOWER COM 03027X100 551,859 -26,032 -4.50 141,050 -2.84 1.9892
2022-05-16 2022-03-31 13F AMERICAN TOWER COM 03027X100 577,891 -11,217 -1.90 145,178 -15.75 1.6726
2022-02-14 2021-12-31 13F AMERICAN TOWER COM 03027X100 589,108 -106,770 -15.34 172,314 -6.70 1.7320
2021-11-15 2021-09-30 13F AMERICAN TOWER COM 03027X100 695,878 -9,760 -1.38 184,693 -3.11 1.8933
2021-08-16 2021-06-30 13F AMERICAN TOWER COM 03027X100 705,638 -1,104 -0.16 190,621 12.82 2.0249
2021-05-17 2021-03-31 13F AMERICAN TOWER COM 03027X100 706,742 3,167 0.45 168,954 6.98 1.9614
2021-02-16 2020-12-31 13F AMERICAN TOWER COM 03027X100 703,575 89,327 14.54 157,924 6.36 1.8344
2020-11-16 2020-09-30 13F AMERICAN TOWER COM 03027X100 614,248 -3,147 -0.51 148,482 -6.98 2.0005
2020-08-14 2020-06-30 13F AMERICAN TOWER COM 03027X100 617,395 73,455 13.50 159,621 34.77 2.4087
2020-05-15 2020-03-31 13F AMERICAN TOWER COM 03027X100 543,940 1,251 0.23 118,443 -5.03 2.2841
2020-02-14 2019-12-31 13F AMERICAN TOWER COM 03027X100 542,689 -60,527 -10.03 124,721 -6.50 2.1074
2019-11-14 2019-09-30 13F AMERICAN TOWER COM 03027X100 603,216 -6,910 -1.13 133,389 6.93 2.3924
2019-08-15 2019-06-30 13F AMERICAN TOWER COM 03027X100 610,126 -13,827 -2.22 124,740 1.45 2.2706
2019-05-15 2019-03-31 13F AMERICAN TOWER COM 03027X100 623,953 -2,463 -0.39 122,956 24.08 2.4394
2019-02-14 2018-12-31 13F AMERICAN TOWER COM 03027X100 626,416 -57,190 -8.37 99,093 -0.24 2.4713
2018-11-15 2018-09-30 13F AMERICAN TOWER COM 03027X100 683,606 4,028 0.59 99,328 1.38 2.0649
2018-08-15 2018-06-30 13F AMERICAN TOWER COM 03027X100 679,578 -9,282 -1.35 97,975 -2.14 2.2055
2018-05-15 2018-03-31 13F AMERICAN TOWER COM 03027X100 688,860 48,501 7.57 100,119 9.59 2.3177
2018-02-15 2017-12-31 13F AMERICAN TOWER COM 03027X100 640,359 -18,657 -2.83 91,360 1.43 2.2986
2017-11-15 2017-09-30 13F AMERICAN TOWER REIT COM 03027X100 659,016 -17,342 -2.56 90,074 0.65 2.3368
2017-08-15 2017-06-30 13F AMERICAN TOWER REIT COM 03027X100 676,358 -10,994 -1.60 89,496 7.13 2.3627
2017-05-15 2017-03-31 13F AMERICAN TOWER REIT COM 03027X100 687,352 -37,587 -5.18 83,541 9.04 2.3611
2017-02-15 2016-12-31 13F AMERICAN TOWER REIT COM 03027X100 724,939 -48,412 -6.26 76,612 -12.59 2.1510
2016-11-15 2016-09-30 13F AMERICAN TOWER REIT COM 03027X100 773,351 -30,699 -3.82 87,644 -4.05 2.4237
2016-08-12 2016-06-30 13F AMERICAN TOWER REIT INC (HLDG COM 03027X100 804,050 -7,594 -0.94 91,348 9.94 2.5646
2016-05-16 2016-03-31 13F AMERICAN TOWER REIT INC (HLDG COM 03027X100 811,644 -26,616 -3.18 83,088 2.24 2.4183
2016-02-12 2015-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 838,260 758 0.09 81,269 10.30 2.2792
2015-11-19 2015-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 837,502 7,012 0.84 73,683 -4.90 2.0880
2015-08-13 2015-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 830,490 75,245 9.96 77,476 8.96 2.0934
2015-05-14 2015-03-31 13F AMERICAN TOWER COM 03027X100 755,245 59,497 8.55 71,106 3.39 1.7537
2015-02-12 2014-12-31 13F AMERICAN TOWER COM 03027X100 695,748 -211,514 -23.31 68,775 -19.04 1.6708
2014-11-13 2014-09-30 13F AMERICAN TOWER COM 03027X100 907,262 -45,812 -4.81 84,947 -0.95 2.1158
2014-07-08 2014-06-30 13F AMERICAN TOWER COM 03027X100 953,074 -4,944 -0.52 85,758 9.34 1.9826
2014-04-16 2014-03-31 13F AMERICAN TOWER COM 03027X100 958,018 217,263 29.33 78,433 32.65 1.8324
2014-02-10 2013-12-31 13F AMERICAN TOWER COM 03027X100 740,755 7,605 1.04 59,127 8.79 1.3502
2013-10-31 2013-09-30 13F AMERICAN TOWER COM 03027X100 733,150 -270,486 -26.95 54,348 -25.99 1.4017
2013-07-25 2013-06-30 13F AMERICAN TOWER COM 03027X100 1,003,636 1,003,636 73,436 2.0903
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.