American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionKovack Advisors, Inc.
Latest Disclosed Ownership1,464 shares
Latest Disclosed Value $ 250,913
Kovack Advisors, Inc. reports 16.63% decrease in ownership of AMT / American Tower Corporation

On May 12, 2026 - Kovack Advisors, Inc. filed a 13F-HR form disclosing ownership of 1,464 shares of American Tower Corporation (US:AMT) valued at $252,657 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 1,756 shares of American Tower Corporation. This represents a change in shares of -16.63% during the quarter. The current value of the position is $266,799 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)
2026-05-12 2026-03-31 13F AMERICAN TOWER COM 03027X100 1,464 -292 -16.63 251 -18.83 0.0134
2026-02-17 2025-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 1,756 296 20.27 308 10.00 0.0143
2026-02-12 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,756 296 224
2025-11-10 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,460 28 1.96 281 -11.39 0.0264
2025-08-04 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,432 -217 -13.16 317 -11.73 0.0310
2025-05-06 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,649 -93 -5.34 359 12.23 0.0380
2025-02-05 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,742 -45 -2.52 319 -23.13 0.0314
2024-11-05 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 1,787 139 8.43 415 29.69 0.0440
2024-08-05 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,648 -1 -0.06 320 -1.54 0.0353
2024-04-19 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,649 170 11.49 326 1.88 0.0395
2024-02-02 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 1,479 1,479 319 0.0379
2023-10-19 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 0 -1,250 -100.00 0 -100.00
2023-07-21 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 1,250 -358 -22.26 242 -26.22 0.0311
2023-04-21 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 1,608 -18 -1.11 329 -4.65 0.0448
2023-02-22 2022-12-31 13F AMERICAN TOWER REIT REIT 03027X100 1,626 -173 -9.62 345 -10.88 0.0504
2022-11-14 2022-09-30 13F AMERICAN TOWER REIT REIT 03027X100 1,799 -638 -26.18 386 -38.04 0.0567
2022-08-10 2022-06-30 13F AMERICAN TOWER REIT REIT 03027X100 2,437 71 3.00 623 4.88 0.0822
2022-05-16 2022-03-31 13F AMERICAN TOWER REIT REIT 03027X100 2,366 -180 -7.07 594 -20.27 0.0610
2022-01-18 2021-12-31 13F AMERICAN TOWER REIT REIT 03027X100 2,546 -474 -15.70 745 -7.11 0.0720
2021-11-03 2021-09-30 13F AMERICAN TOWER REIT REIT 03027X100 3,020 337 12.56 802 10.62 0.0872
2021-07-29 2021-06-30 13F AMERICAN TOWER REIT REIT 03027X100 2,683 -877 -24.63 725 -14.81 0.0825
2021-05-04 2021-03-31 13F AMERICAN TOWER REIT REIT 03027X100 3,560 454 14.62 851 22.09 0.1106
2021-01-14 2020-12-31 13F AMERICAN TOWER REIT REIT 03027X100 3,106 376 13.77 697 5.61 0.1003
2020-11-02 2020-09-30 13F AMERICAN TOWER REIT REIT 03027X100 2,730 -596 -17.92 660 -23.26 0.1174
2020-07-31 2020-06-30 13F AMERICAN TOWER REIT REIT 03027X100 3,326 -1,147 -25.64 860 -11.70 0.1674
2020-04-30 2020-03-31 13F AMERICAN TOWER REIT REIT 03027X100 4,473 1,549 52.98 974 44.94 0.2250
2020-01-29 2019-12-31 13F AMERICAN TOWER REIT REIT 03027X100 2,924 768 35.62 672 40.88 0.1201
2019-10-31 2019-09-30 13F AMERICAN TOWER REIT REIT 03027X100 2,156 -58 -2.62 477 50.95 0.0979
2018-05-15 2017-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 2,214 430 24.10 316 29.51 0.0799
2018-08-02 2017-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 1,784 -949 -34.72 244 -32.60 0.0809
2018-08-30 2017-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 2,733 996 57.34 362 71.56 0.1142
2018-09-05 2017-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 1,737 1,737 211 0.0822
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.