American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionSilvercrest Asset Management Group Llc
Latest Disclosed Ownership12,507 shares
Latest Disclosed Value $ 2,158,458
Silvercrest Asset Management Group Llc reports 6.15% decrease in ownership of AMT / American Tower Corporation

On May 15, 2026 - Silvercrest Asset Management Group Llc filed a 13F-HR form disclosing ownership of 12,507 shares of American Tower Corporation (US:AMT) valued at $2,158,458 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 13,327 shares of American Tower Corporation. This represents a change in shares of -6.15% during the quarter. The current value of the position is $2,279,276 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.

Upgrade to unlock premium data and export to Excel .

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)
2026-05-15 2026-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 12,507 -820 -6.15 2,158 -7.74 0.0156
2026-02-17 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 13,327 -34 -0.25 2,340 -8.95 0.0161
2025-11-14 2025-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,361 32 0.24 2,570 -12.77 0.0170
2025-08-14 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 13,329 36 0.27 2,946 1.83 0.0198
2025-05-15 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 13,293 370 2.86 2,893 22.03 0.0207
2025-02-14 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 12,923 -75 -0.58 2,370 -21.58 0.0158
2024-11-14 2024-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 12,998 -7 -0.05 3,023 19.59 0.0206
2024-08-15 2024-06-30 13F/A-1 AMERICAN TOWER CORP NEW COM COM 03027X100 13,005 0 0.00 2,528 -1.63 0.0173
2024-08-14 2024-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 26,010 13,005 5,056 0.0116
2024-05-15 2024-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,005 -335 -2.51 2,570 -10.77 0.0174
2024-02-14 2023-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,340 -453 -3.28 2,880 26.94 0.0204
2023-11-14 2023-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,793 0 0.00 2,268 -15.21 0.0172
2023-08-14 2023-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,793 750 5.75 2,675 0.38 0.0191
2023-05-15 2023-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,043 -300 -2.25 2,665 -5.70 0.0202
2023-02-14 2022-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,343 -100 -0.74 2,827 -2.08 0.0217
2022-11-14 2022-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,443 -295 -2.15 2,886 -17.80 0.0237
2022-08-15 2022-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,738 -179 -1.29 3,511 0.43 0.0267
2022-05-16 2022-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,917 368 2.72 3,496 -11.78 0.0227
2022-02-14 2021-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,549 455 3.47 3,963 14.04 0.0251
2021-11-15 2021-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,094 -1,150 -8.07 3,475 -9.69 0.0234
2021-08-16 2021-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 14,244 -272 -1.87 3,848 10.89 0.0252
2021-05-17 2021-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 14,516 1,926 15.30 3,470 22.79 0.0234
2021-02-16 2020-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 12,590 -977 -7.20 2,826 -13.84 0.0206
2020-11-16 2020-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,567 1,008 8.03 3,280 1.02 0.0281
2020-08-14 2020-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 12,559 -37 -0.29 3,247 18.37 0.0288
2020-05-15 2020-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 12,596 644 5.39 2,743 -0.15 0.0294
2020-02-14 2019-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,952 152 1.29 2,747 5.29 0.0213
2019-11-14 2019-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,800 0 0.00 2,609 8.12 0.0215
2019-08-14 2019-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,800 -9 -0.08 2,413 3.70 0.0226
2019-05-15 2019-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,809 -138 -1.16 2,327 23.12 0.0229
2019-02-14 2018-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,947 398 3.45 1,890 12.63 0.0208
2018-11-14 2018-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,549 -16 -0.14 1,678 0.66 0.0152
2018-08-14 2018-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,565 -127 -1.09 1,667 -1.88 0.0156
2018-05-15 2018-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,692 -17 -0.15 1,699 1.68 0.0166
2018-02-14 2017-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,709 -289 -2.41 1,671 1.89 0.0155
2017-11-14 2017-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 11,998 -136 -1.12 1,640 2.12 0.0163
2017-08-14 2017-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 12,134 -800 -6.19 1,606 2.16 0.0172
2017-05-15 2017-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 12,934 -450 -3.36 1,572 11.17 0.0168
2017-02-14 2016-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,384 -291 -2.13 1,414 -8.77 0.0158
2016-11-14 2016-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 13,675 -651 -4.54 1,550 -4.79 0.0186
2016-08-15 2016-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 14,326 -2,340 -14.04 1,628 -4.57 0.0207
2016-05-16 2016-03-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 16,666 -350 -2.06 1,706 3.39 0.0235
2016-02-16 2015-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 17,016 17,016 2.10 1,650 -3.28 0.0229
2015-11-16 2015-09-30 13F AMERICAN TOWER COM 03027X100 0 -19,890 -100.00 0 -100.00
2015-08-14 2015-06-30 13F AMERICAN TOWER COM 03027X100 19,890 19,890 0.00 1,856 0.0248
2015-02-17 2014-12-31 13F AMERICAN TOWER CORP NEW COM COM 03027X100 0 -2,305 -100.00 0 -100.00
2014-11-14 2014-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 2,305 -100 -4.16 216 0.00 0.0033
2014-08-14 2014-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 2,405 2,405 4.34 216 0.00 0.0032
2013-11-14 2013-09-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 0 -2,990 -100.00 0 -100.00
2013-08-14 2013-06-30 13F AMERICAN TOWER CORP NEW COM COM 03027X100 2,990 2,990 219 0.0046
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.