American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionBessemer Group Inc
Latest Disclosed Ownership282,676 shares
Latest Disclosed Value $ 48,784
Bessemer Group Inc reports 4.57% increase in ownership of AMT / American Tower Corporation

On May 6, 2026 - Bessemer Group Inc filed a 13F-HR form disclosing ownership of 282,676 shares of American Tower Corporation (US:AMT) valued at $48,784,224 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 270,313 shares of American Tower Corporation. This represents a change in shares of 4.57% during the quarter. The current value of the position is $51,514,874 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)
2026-05-06 2026-03-31 13F AMERICAN TOWER SRE 03027X100 282,676 12,363 4.57 49 2.13 0.0767
2026-02-05 2025-12-31 13F AMERICAN TOWER SRE 03027X100 270,313 -900,871 -76.92 47 -79.11 0.0729
2025-11-05 2025-09-30 13F AMERICAN TOWER SRE 03027X100 1,171,184 187,941 19.11 225 3.69 0.3445
2025-08-01 2025-06-30 13F AMERICAN TOWER SRE 03027X100 983,243 -153,660 -13.52 217 -12.15 0.3528
2025-04-23 2025-03-31 13F AMERICAN TOWER SRE 03027X100 1,136,903 831,247 271.96 247 341.07 0.4435
2025-02-13 2024-12-31 13F AMERICAN TOWER SRE 03027X100 305,656 -174,161 -36.30 56 -49.55 0.0915
2024-11-12 2024-09-30 13F AMERICAN TOWER SRE 03027X100 479,817 3,773 0.79 112 20.65 0.1838
2024-08-13 2024-06-30 13F AMERICAN TOWER SRE 03027X100 476,044 -7,466 -1.54 93 -3.16 0.1632
2024-08-13 2024-03-31 13F/A-1 AMERICAN TOWER SRE 03027X100 483,510 -19,306 -3.84 96 -12.04 0.1727
2024-05-13 2024-03-31 13F AMERICAN TOWER SRE 03027X100 483,510 -19,306 96 0.1727
2024-02-09 2023-12-31 13F AMERICAN TOWER SRE 03027X100 502,816 -9,494 -1.85 109 28.57 0.2115
2023-11-13 2023-09-30 13F AMERICAN TOWER SRE 03027X100 512,310 -3,242 -0.63 84 -15.15 0.1850
2023-08-10 2023-06-30 13F AMERICAN TOWER SRE 03027X100 515,552 -900,529 -63.59 100 -65.74 0.2121
2023-05-10 2023-03-31 13F AMERICAN TOWER SRE 03027X100 1,416,081 -142,260 -9.13 289 -12.42 0.6869
2023-02-13 2022-12-31 13F AMERICAN TOWER SRE 03027X100 1,558,341 -361,311 -18.82 330 -99.92 0.8041
2022-11-09 2022-09-30 13F AMERICAN TOWER SRE 03027X100 1,919,652 -8,689 -0.45 412,149 -16.38 1.0756
2022-08-10 2022-06-30 13F AMERICAN TOWER SRE 03027X100 1,928,341 939 0.05 492,866 1.79 1.2290
2022-05-12 2022-03-31 13F AMERICAN TOWER SRE 03027X100 1,927,402 29,986 1.58 484,202 -12.76 1.0158
2022-01-27 2021-12-31 13F AMERICAN TOWER SRE 03027X100 1,897,416 307,562 19.35 554,993 31.53 1.1121
2021-11-12 2021-09-30 13F AMERICAN TOWER SRE 03027X100 1,589,854 14,478 0.92 421,963 -0.85 0.8999
2021-08-06 2021-06-30 13F AMERICAN TOWER SRE 03027X100 1,575,376 109,127 7.44 425,573 21.41 0.9236
2021-05-13 2021-03-31 13F AMERICAN TOWER SRE 03027X100 1,466,249 51,607 3.65 350,522 10.39 0.8399
2021-02-09 2020-12-31 13F AMERICAN TOWER SRE 03027X100 1,414,642 383,055 37.13 317,530 27.33 0.8391
2020-11-12 2020-09-30 13F AMERICAN TOWER SRE 03027X100 1,031,587 11,617 1.14 249,366 -5.44 0.7369
2020-08-05 2020-06-30 13F AMERICAN TOWER SRE 03027X100 1,019,970 23,216 2.33 263,702 21.50 0.8324
2020-04-30 2020-03-31 13F AMERICAN TOWER SRE 03027X100 996,754 16,604 1.69 217,043 -3.65 0.8742
2020-02-04 2019-12-31 13F AMERICAN TOWER SRE 03027X100 980,150 -8,239 -0.83 225,259 3.06 0.7292
2019-11-07 2019-09-30 13F AMERICAN TOWER SRE 03027X100 988,389 -319,026 -24.40 218,562 -18.23 0.7803
2019-07-19 2019-06-30 13F AMERICAN TOWER SRE 03027X100 1,307,415 -4,604 -0.35 267,301 3.39 0.9005
2019-05-13 2019-03-31 13F AMERICAN TOWER SRE 03027X100 1,312,019 22,143 1.72 258,548 26.71 0.9927
2019-05-21 2018-12-31 13F/A-1 AMERICAN TOWER SRE 03027X100 1,289,876 1,284,104 22,247.12 204,045 24,220.02 0.8888
2019-02-12 2018-12-31 13F AMERICAN TOWER SRE 03027X100 1,289,876 1,284,104 204,045 0.8884
2018-11-06 2018-09-30 13F AMERICAN TOWER SRE 03027X100 5,772 470 8.86 839 9.96 0.0031
2018-07-25 2018-06-30 13F AMERICAN TOWER SRE 03027X100 5,302 -1,416 -21.08 763 -21.98 0.0030
2018-05-10 2018-03-31 13F AMERICAN TOWER SRE 03027X100 6,718 1,267 23.24 978 25.87 0.0038
2018-01-30 2017-12-31 13F AMERICAN TOWER SRE 03027X100 5,451 -102 -1.84 777 2.51 0.0030
2017-11-03 2017-09-30 13F AMERICAN TOWER SRE 03027X100 5,553 125 2.30 758 5.57 0.0030
2017-07-27 2017-06-30 13F AMERICAN TOWER SRE 03027X100 5,428 3,670 208.76 718 237.09 0.0029
2017-05-12 2017-03-31 13F AMERICAN TOWER SRE 03027X100 1,758 -531 -23.20 213 -11.98 0.0009
2017-02-07 2016-12-31 13F AMERICAN TOWER SRE 03027X100 2,289 1,787 355.98 242 324.56 0.0011
2016-11-10 2016-09-30 13F AMERICAN TOWER SRE 03027X100 502 -5,288 -91.33 57 -91.34 0.0003
2016-08-11 2016-06-30 13F AMERICAN TOWER SRE 03027X100 5,790 -3,304 -36.33 658 -29.32 0.0036
2016-05-11 2016-03-31 13F AMERICAN TOWER SRE 03027X100 9,094 3,976 77.69 931 87.32 0.0053
2016-02-12 2015-12-31 13F AMERICAN TOWER SRE 03027X100 5,118 4,721 1,189.17 497 1,320.00 0.0028
2015-11-16 2015-09-30 13F AMERICAN TOWER SRE 03027X100 397 -1,791 -81.86 35 -82.84 0.0002
2015-08-14 2015-06-30 13F AMERICAN TOWER SRE 03027X100 2,188 -225 -9.32 204 -10.13 0.0011
2015-06-18 2015-03-31 13F/A-1 AMERICAN TOWER SRE 03027X100 2,413 -2,368 -49.53 227 -52.01 0.0012
2015-05-14 2015-03-31 13F AMERICAN TOWER SRE 03027X100 2,413 227
2015-02-17 2014-12-31 13F AMERICAN TOWER SRE 03027X100 4,781 2,091 77.73 473 87.70 0.0025
2014-12-11 2014-09-30 13F/A-1 AMERICAN TOWER SRE 03027X100 2,690 381 16.50 252 21.15 0.0014
2014-11-13 2014-09-30 13F AMERICAN TOWER SRE 03027X100 2,690 381 252 0.0016
2014-08-13 2014-06-30 13F AMERICAN TOWER SRE 03027X100 2,309 622 36.87 208 50.72 0.0013
2014-05-14 2014-03-31 13F AMERICAN TOWER SRE 03027X100 1,687 486 40.47 138 42.27 0.0009
2014-02-18 2013-12-31 13F AMERICAN TOWER SRE 03027X100 1,201 -1,848 -60.61 97 -57.27 0.0007
2013-11-08 2013-09-30 13F AMERICAN TOWER SRE 03027X100 3,049 -821 -21.21 227 -19.79 0.0018
2013-08-14 2013-06-30 13F AMERICAN TOWER SRE 03027X100 3,870 3,870 283 0.0025
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.