American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionAlps Advisors Inc
Latest Disclosed Ownership1,200 shares
Latest Disclosed Value $ 207,096
Alps Advisors Inc reports 0.83% decrease in ownership of AMT / American Tower Corporation

On May 8, 2026 - Alps Advisors Inc filed a 13F-HR form disclosing ownership of 1,200 shares of American Tower Corporation (US:AMT) valued at $207,096 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 1,210 shares of American Tower Corporation. This represents a change in shares of -0.83% during the quarter. The current value of the position is $232,944 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)
2026-05-08 2026-03-31 13F AMERICAN TOWER COM 03027X100 1,200 -10 -0.83 207 -2.36 0.0010
2026-02-12 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,210 -389 -24.33 212 -30.94 0.0012
2025-11-05 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,599 409 34.37 308 16.73 0.0017
2025-08-11 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,190 -85 -6.67 263 -5.05 0.0015
2025-04-30 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,275 -293 -18.69 277 -3.48 0.0016
2025-02-13 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,568 205 15.04 288 -9.18 0.0018
2024-11-12 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,363 50 3.81 317 23.92 0.0021
2024-08-13 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,313 50 3.96 255 2.41 0.0018
2024-05-14 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,263 -5 -0.39 250 -8.79 0.0018
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,268 -165 -11.51 274 16.17 0.0022
2023-11-14 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,433 -362 -20.17 236 -32.47 0.0020
2023-08-14 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,795 -202 -10.12 348 -14.71 0.0030
2023-05-10 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,997 -112 -5.31 408 -8.52 0.0036
2023-02-14 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,109 112 5.61 447 3.96 0.0040
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,997 -95 -4.54 429 -19.81 0.0041
2022-08-15 2022-06-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 2,092 -620 -22.86 535 -21.44 0.0052
2022-08-11 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 2,092 -620 535 0.0051
2022-05-16 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,712 85 3.24 681 -11.33 0.0074
2022-02-09 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 2,627 -6,812 -72.17 768 -69.35 0.0086
2021-11-15 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 9,439 2,440 34.86 2,506 32.52 0.0241
2021-08-11 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 6,999 -363 -4.93 1,891 7.44 0.0167
2021-05-07 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 7,362 -1,089 -12.89 1,760 -7.22 0.0172
2021-02-03 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 8,451 -555 -6.16 1,897 -12.86 0.0214
2020-11-05 2020-09-30 13F/A-1 AMERICAN TOWER CORP COM 03027X100 9,006 -3,808 -29.72 2,177 -34.29 0.0320
2020-11-04 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 9,006 -3,808 2,177 27,900.8631
2020-08-05 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 12,814 9,094 244.46 3,313 309.01 0.0444
2020-05-06 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 3,720 -195 -4.98 810 -10.00 0.0125
2020-02-07 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,915 -9,974 -71.81 900 -70.70 0.0070
2019-11-04 2019-09-30 13F AMERICAN TOWER C COMMON STOCK 03027X100 13,889 3,225 30.24 3,072 40.92 0.0239
2019-08-07 2019-06-30 13F AMERICAN TOWER C COMMON STOCK 03027X100 10,664 -2,051 -16.13 2,180 -13.01 0.0161
2019-05-01 2019-03-31 13F AMERICAN TOWER C COMMON STOCK 03027X100 12,715 -1,054 -7.65 2,506 15.06 0.0177
2019-02-04 2018-12-31 13F AMERICAN TOWER C COMMON STOCK 03027X100 13,769 -2,966 -17.72 2,178 -10.44 0.0169
2018-10-25 2018-09-30 13F AMERICAN TOWER C COMMON STOCK 03027X100 16,735 -1,737 -9.40 2,432 -8.67 0.0160
2018-08-02 2018-06-30 13F/A-2 American Tower COMMON STOCK 03027X100 18,472 17,000 1,154.89 2,663 1,144.39 0.0174
2018-07-31 2018-06-30 13F/A-1 American Tower COMMON STOCK 03027X100 1,444 -17,028 206 0.0013
2018-07-25 2018-06-30 13F American Tower COMMON STOCK 03027X100 1,444 -28 206
2018-05-01 2018-03-31 13F American Tower COMMON STOCK 03027X100 1,472 28 1.94 214 3.88 0.0017
2018-02-20 2017-12-31 13F/A-1 American Tower COMMON STOCK 03027X100 1,444 1,444 -1.90 206 -3.74 0.0014
2018-02-05 2017-12-31 13F American Tower COMMON STOCK 03027X100 1,444 206
2014-02-11 2013-12-31 13F AMERICAN TOWER Common Stock 03027X100 0 -2,902 -100.00 0 -100.00
2013-11-13 2013-09-30 13F AMERICAN TOWER Common Stock 03027X100 2,902 0 0.00 215 1.42 0.0024
2013-08-02 2013-06-30 13F AMERICAN TOWER Common Stock 03027X100 2,902 2,902 212 0.0026
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.