American Tower Corporation
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionKinneret Advisory, LLC
Latest Disclosed Ownership15,594 shares
Latest Disclosed Value $ 2,691,213
Kinneret Advisory, LLC reports 4.24% decrease in ownership of AMT / American Tower Corporation

On May 14, 2026 - Kinneret Advisory, LLC filed a 13F-HR form disclosing ownership of 15,594 shares of American Tower Corporation (MX:AMT) valued at $2,691,213 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 16,285 shares of American Tower Corporation. This represents a change in shares of -4.24% 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)
2026-05-14 2026-03-31 13F AMERICAN TOWER COM 03027X100 15,594 -691 -4.24 2,691 -6.76 0.2551
2026-02-12 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 16,285 -445 -2.66 2,887 -11.06 0.2445
2025-11-05 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 16,730 -75 -0.45 3,246 -13.28 0.2763
2025-07-25 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 16,805 -25 -0.15 3,743 2.18 0.3408
2025-07-21 2025-03-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 16,830 -56 -0.33 3,662 17.22 0.3691
2025-04-29 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 11,330 -5,556 2,465 0.3692
2025-02-03 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 16,886 -786 -4.45 3,124 -23.97 0.2950
2024-11-04 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 17,672 -231 -1.29 4,110 17.10 0.3771
2024-07-26 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 17,903 -114 -0.63 3,509 -1.40 0.3366
2024-04-25 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 18,017 -56 -0.31 3,560 -9.49 0.3559
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 18,073 -115 -0.63 3,932 31.46 0.4353
2023-10-12 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 18,188 -11 -0.06 2,991 -15.94 0.3695
2023-08-02 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 18,199 18,199 3,558 0.4215
2023-04-27 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 0 -19,177 -100.00 0 -100.00
2023-02-14 2022-12-31 13F AMERICAN TOWER CORP COM 03027X100 19,177 -349 -1.79 4,093 -2.39 0.5410
2022-11-02 2022-09-30 13F AMERICAN TOWER CORP COM 03027X100 19,526 0 0.00 4,192 -16.48 0.5815
2022-08-04 2022-06-30 13F AMERICAN TOWER CORP COM 03027X100 19,526 413 2.16 5,019 4.52 0.6511
2022-05-13 2022-03-31 13F AMERICAN TOWER CORP COM 03027X100 19,113 428 2.29 4,802 -12.55 0.5271
2022-02-08 2021-12-31 13F AMERICAN TOWER CORP COM 03027X100 18,685 0 0.00 5,491 10.17 0.5684
2021-11-09 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 18,685 0 0.00 4,984 -1.72 0.5842
2021-08-16 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 18,685 0 0.00 5,071 13.52 0.5992
2021-05-13 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 18,685 0 0.00 4,467 5.93 0.5735
2021-02-11 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 18,685 0 0.00 4,217 -7.07 0.5724
2020-11-13 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 18,685 -601 -3.12 4,538 -9.37 0.6879
2020-08-12 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 19,286 0 0.00 5,007 19.21 0.8053
2020-05-14 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 19,286 2,156 12.59 4,200 6.22 0.8181
2020-02-10 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 17,130 0 0.00 3,954 3.94 0.7190
2019-11-13 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 17,130 0 0.00 3,804 8.13 0.7575
2019-08-13 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 17,130 0 0.00 3,518 4.21 0.7132
2019-05-15 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 17,130 505 3.04 3,376 27.69 0.7104
2019-02-13 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 16,625 16,625 2,644 0.7829
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.