American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionNixon Peabody Trust Co
Latest Disclosed Ownership11,336 shares
Latest Disclosed Value $ 1,956,367
Nixon Peabody Trust Co reports 73.04% decrease in ownership of AMT / American Tower Corporation

On April 27, 2026 - Nixon Peabody Trust Co filed a 13F-HR form disclosing ownership of 11,336 shares of American Tower Corporation (US:AMT) valued at $1,956,367 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 6, 2026 disclosing 42,049 shares of American Tower Corporation. This represents a change in shares of -73.04% during the quarter. The current value of the position is $2,065,873 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)
2026-04-27 2026-03-31 13F American Tower Com 03027X100 11,336 -30,713 -73.04 1,956 -73.50 0.1555
2026-02-06 2025-12-31 13F American Tower Com 03027X100 42,049 -2,439 -5.48 7,383 -13.71 0.5590
2025-10-17 2025-09-30 13F American Tower Com 03027X100 44,488 -456 -1.01 8,556 -13.87 0.6265
2025-08-08 2025-06-30 13F American Tower Com 03027X100 44,944 424 0.95 9,934 2.54 0.7694
2025-04-10 2025-03-31 13F American Tower Com 03027X100 44,520 2,774 6.64 9,688 26.53 0.8224
2025-02-05 2024-12-31 13F American Tower Com 03027X100 41,746 -1,224 -2.85 7,657 -23.39 0.6308
2024-11-07 2024-09-30 13F American Tower Com 03027X100 42,970 -978 -2.23 9,993 16.99 0.8322
2024-07-26 2024-06-30 13F American Tower Com 03027X100 43,948 -4,329 -8.97 8,543 -10.45 0.7591
2024-05-07 2024-03-31 13F American Tower Com 03027X100 48,277 2,378 5.18 9,539 -3.72 0.8758
2024-02-09 2023-12-31 13F American Tower Com 03027X100 45,899 36,454 385.96 9,909 537.99 1.1111
2023-10-23 2023-09-30 13F American Tower Com 03027X100 9,445 78 0.83 1,553 -14.48 1.3006
2023-07-27 2023-06-30 13F American Tower Com 03027X100 9,367 -1,309 -12.26 1,817 -16.74 1.4733
2023-05-12 2023-03-31 13F American Tower Com 03027X100 10,676 1,176 12.38 2,182 8.40 1.5260
2023-02-09 2022-12-31 13F American Tower Com 03027X100 9,500 255 2.76 2,013 1.41 1.6328
2023-03-15 2022-09-30 13F/A-1 American Tower Com 03027X100 9,245 -5,151 -35.78 1,985 -46.07 1.6833
2022-11-10 2022-09-30 13F American Tower Com 03027X100 5,437 -8,959 1,167 0.5266
2022-08-11 2022-06-30 13F American Tower Com 03027X100 14,396 -1,042 -6.75 3,679 -5.13 1.6629
2022-05-13 2022-03-31 13F American Tower Com 03027X100 15,438 305 2.02 3,878 -12.38 1.3347
2022-02-08 2021-12-31 13F American Tower Com 03027X100 15,133 1,781 13.34 4,426 24.89 1.3401
2021-11-04 2021-09-30 13F AMERICAN TOWER CORP NEW COM Real Estate Investment Trusts 03027X100 13,352 1,167 9.58 3,544 7.65 1.2806
2021-07-30 2021-06-30 13F AMERICAN TOWER CORP NEW COM Real Estate Investment Trusts 03027X100 12,185 72 0.59 3,292 13.67 1.2682
2021-04-26 2021-03-31 13F AMERICAN TOWER CORP NEW COM Real Estate Investment Trusts 03027X100 12,113 171 1.43 2,896 8.06 1.1738
2021-02-10 2020-12-31 13F AMERICAN TOWER REIT COM Real Estate Investment Trusts 03027X100 11,942 1,539 14.79 2,680 6.60 1.1307
2020-11-03 2020-09-30 13F AMERICAN TOWER REIT COM Real Estate Investment Trusts 03027X100 10,403 494 4.99 2,514 -1.87 1.1577
2020-08-13 2020-06-30 13F AMERICAN TOWER REIT COM Real Estate Investment Trusts 03027X100 9,909 780 8.54 2,562 28.87 1.3004
2020-04-23 2020-03-31 13F AMERICAN TOWER REIT COM Real Estate Investment Trusts 03027X100 9,129 9,129 1,988 1.2283
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.