아메리칸 타워 코퍼레이션
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionCabot Wealth Management Inc
Latest Disclosed Ownership59,285 shares
Latest Disclosed Value $ 10,231,478
Cabot Wealth Management Inc reports 15.37% increase in ownership of AMT / American Tower Corporation

On April 24, 2026 - Cabot Wealth Management Inc filed a 13F-HR form disclosing ownership of 59,285 shares of American Tower Corporation (MX:AMT) valued at $10,231,478 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 3, 2026 disclosing 51,387 shares of American Tower Corporation. This represents a change in shares of 15.37% during the quarter.

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)
2026-04-24 2026-03-31 13F AMERICAN TOWER COM 03027X100 59,285 7,898 15.37 10,231 13.40 1.1767
2026-02-03 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 51,387 -615 -1.18 9,022 -9.78 0.9973
2025-10-31 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 52,002 1,849 3.69 10,001 -9.78 1.1092
2025-07-31 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 50,153 1,241 2.54 11,085 4.14 1.3182
2025-04-22 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 48,912 986 2.06 10,643 21.08 1.3559
2025-02-04 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 47,926 1,313 2.82 8,790 -18.91 1.1163
2024-10-15 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 46,613 1,154 2.54 10,840 22.68 1.3551
2024-07-12 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 45,459 11,953 35.67 8,836 33.47 1.1582
2024-05-03 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 33,506 3,919 13.25 6,620 3.65 0.8653
2024-02-12 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 29,587 157 0.53 6,387 159,575.00 0.8880
2023-10-26 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 29,430 647 2.25 5 -20.00 0.7417
2023-07-13 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 28,783 2,091 7.83 6 0.00 0.8337
2023-04-20 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 26,692 26,692 5 0.8610
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.