American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionMascoma Wealth Management LLC
Latest Disclosed Ownership55 shares
Latest Disclosed Value $ 9,492
Mascoma Wealth Management LLC reports 10.00% increase in ownership of AMT / American Tower Corporation

On April 30, 2026 - Mascoma Wealth Management LLC filed a 13F-HR form disclosing ownership of 55 shares of American Tower Corporation (US:AMT) valued at $9,492 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 4, 2026 disclosing 50 shares of American Tower Corporation. This represents a change in shares of 10.00% during the quarter. The current value of the position is $10,023 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)
2026-04-30 2026-03-31 13F AMERICAN TOWER CORP COM REIT 03027X100 55 5 10.00 9 12.50 0.0020
2026-02-04 2025-12-31 13F AMERICAN TOWER CORP COM REIT 03027X100 50 -70 -58.33 9 -65.22 0.0019
2025-10-28 2025-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 120 0 0.00 23 -11.54 0.0051
2025-07-22 2025-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 120 0 0.00 27 0.00 0.0062
2025-04-24 2025-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 120 -125 -51.02 26 -40.91 0.0065
2025-02-10 2024-12-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 245 16 6.99 45 -16.98 0.0113
2024-11-05 2024-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 229 -10 -4.18 53 15.22 0.0133
2024-08-02 2024-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 239 205 602.94 46 666.67 0.0123
2024-05-02 2024-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 34 0 0.00 7 -14.29 0.0019
2024-01-24 2023-12-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 34 0 0.00 7 40.00 0.0022
2023-10-13 2023-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 34 0 0.00 6 -16.67 0.0017
2023-08-09 2023-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 34 -148 -81.32 6 -83.78 0.0019
2023-05-01 2023-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 182 2 1.11 37 -2.63 0.0109
2023-01-24 2022-12-31 13F/A-1 AMERICAN TOWER CORP NEW COM REIT 03027X100 180 1 0.56 38 0.00 0.0121
2023-01-20 2022-12-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 179 0 0 0.0132
2022-10-18 2022-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 179 1 0.56 38 -17.39 0.0132
2022-07-14 2022-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 178 0 0.00 46 2.22 0.0157
2022-04-25 2022-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 178 1 0.56 45 -13.46 0.0143
2022-01-21 2021-12-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 177 -19 -9.69 52 0.00 0.0180
2021-10-06 2021-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 196 196 52 0.0202
2021-07-06 2021-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 0 -195 -100.00 0 -100.00
2021-04-26 2021-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 195 195 47 0.0202
2019-11-21 2019-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 0 -174 -100.00 0 -100.00
2019-07-29 2019-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 174 0 0.00 36 5.88 0.0225
2019-04-23 2019-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 174 0 0.00 34 21.43 0.0228
2019-01-28 2018-12-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 174 0 0.00 28 12.00 0.0214
2018-11-08 2018-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 174 0 0.00 25 0.00 0.0165
2018-08-13 2018-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 174 0 0.00 25 0.00 0.0176
2018-04-24 2018-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 174 0 0.00 25 0.00 0.0165
2018-02-05 2017-12-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 174 -6 -3.33 25 0.00 0.0154
2017-11-07 2017-09-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 180 -26 -12.62 25 -7.41 0.0167
2017-07-13 2017-06-30 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 206 13 6.74 27 17.39 0.0182
2017-04-18 2017-03-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 193 0 0.00 23 15.00 0.0165
2017-01-30 2016-12-31 13F AMERICAN TOWER CORP NEW COM REIT 03027X100 193 193 20 0.0147
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.