American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionEdgestream Partners, L.P.
Latest Disclosed Ownership39,582 shares
Latest Disclosed Value $ 6,831,062
Edgestream Partners, L.P. reports 187.64% increase in ownership of AMT / American Tower Corporation

On May 18, 2026 - Edgestream Partners, L.P. filed a 13F-HR form disclosing ownership of 39,582 shares of American Tower Corporation (US:AMT) valued at $6,831,062 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 13,761 shares of American Tower Corporation. This represents a change in shares of 187.64% during the quarter. The current value of the position is $7,213,424 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)
2026-05-18 2026-03-31 13F AMERICAN TOWER COM 03027X100 39,582 25,821 187.64 6,831 182.74 0.2241
2026-02-13 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 13,761 -6,546 -32.24 2,416 -38.13 0.0680
2025-11-12 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 20,307 20,307 3,905 0.1142
2025-08-13 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 0 -4,175 -100.00 0 -100.00
2025-05-02 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,175 -32,690 -88.67 908 -86.57 0.0308
2025-02-07 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 36,865 36,865 6,761 0.2880
2024-08-09 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 0 -2,321 -100.00 0 -100.00
2024-05-10 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 2,321 1,218 110.43 459 92.44 0.0229
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,103 -7,087 -86.53 238 -82.32 0.0171
2023-11-15 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 8,190 8,190 1,347 0.1073
2023-08-10 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 0 -10,974 -100.00 0 -100.00
2023-05-15 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 10,974 -8,896 -44.77 2,242 -46.73 0.2476
2023-02-13 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 19,870 19,870 4,210 0.4733
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 0 -4,833 -100.00 0 -100.00
2022-08-12 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,833 4,833 1,235 0.0974
2022-05-13 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 0 -1,926 -100.00 0 -100.00
2022-02-15 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,926 120 6.64 563 17.54 0.0351
2021-11-15 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,806 -16,721 -90.25 479 -90.43 0.0296
2021-08-10 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 18,527 -5,305 -22.26 5,005 -12.15 0.2951
2021-05-06 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 23,832 23,832 28.63 5,697 13.83 0.3182
2019-02-14 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 0 -15,474 -100.00 0 -100.00
2018-11-07 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 15,474 11,064 250.88 2,248 253.46 0.3828
2018-08-09 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,410 4,410 -71.50 636 -71.71 0.1296
2018-05-15 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 0 -4,383 -100.00 0 -100.00
2018-02-09 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 4,383 -14,299 -76.54 625 -75.52 0.7475
2017-10-30 2017-09-30 13F AMERICAN TOWER CORP COM 03027X100 18,682 15,203 436.99 2,553 455.00 1.3601
2017-08-10 2017-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,479 3,479 -81.38 460 -81.98 0.1734
2016-02-16 2015-12-31 13F AMERICAN TOWER CORP COM 03027X100 0 -5,088 -100.00 0 -100.00
2015-11-12 2015-09-30 13F AMERICAN TOWER CORP COM 03027X100 5,088 -4,551 -47.21 448 -50.17 0.7832
2015-08-14 2015-06-30 13F AMERICAN TOWER CORP COM 03027X100 9,639 9,639 899 0.6199
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.