美國鐵塔公司
MX ˙ BMV ˙ US03027X1000
SecurityMX:AMT / American Tower Corporation
InstitutionStephens Inc /ar/
Latest Disclosed Ownership61,956 shares
Latest Disclosed Value $ 10,692,424
Stephens Inc /ar/ reports 1.04% increase in ownership of AMT / American Tower Corporation

On April 28, 2026 - Stephens Inc /ar/ filed a 13F-HR form disclosing ownership of 61,956 shares of American Tower Corporation (MX:AMT) valued at $10,692,424 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 5, 2026 disclosing 61,318 shares of American Tower Corporation. This represents a change in shares of 1.04% 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)
2026-04-28 2026-03-31 13F AMERICAN TOWER COM 03027X100 61,956 638 1.04 10,692 -0.68 0.1338
2026-02-05 2025-12-31 13F AMERICAN TOWER CORP COM 03027X100 61,318 -11,659 -15.98 10,766 -23.40 0.1339
2025-10-27 2025-09-30 13F AMERICAN TOWER CORP COM 03027X100 72,977 1,239 1.73 14,054 -11.36 0.1791
2025-07-29 2025-06-30 13F AMERICAN TOWER CORP COM 03027X100 71,738 -32 -0.04 15,856 1.52 0.2179
2025-05-01 2025-03-31 13F AMERICAN TOWER CORP COM 03027X100 71,770 2,619 3.79 15,617 23.13 0.2289
2025-01-28 2024-12-31 13F AMERICAN TOWER CORP COM 03027X100 69,151 -2,224 -3.12 12,683 -23.59 0.1778
2024-10-28 2024-09-30 13F AMERICAN TOWER CORP COM 03027X100 71,375 -2,956 -3.98 16,599 14.88 0.2355
2024-08-06 2024-06-30 13F AMERICAN TOWER CORP COM 03027X100 74,331 7,148 10.64 14,448 8.84 0.2204
2024-05-15 2024-03-31 13F AMERICAN TOWER CORP COM 03027X100 67,183 8,890 15.25 13,275 5.48 0.2059
2024-02-13 2023-12-31 13F AMERICAN TOWER CORP COM 03027X100 58,293 8,431 16.91 12,584 53.48 0.2171
2023-11-14 2023-09-30 13F AMERICAN TOWER CORP COM 03027X100 49,862 3,144 6.73 8,200 -9.50 0.1572
2023-08-14 2023-06-30 13F AMERICAN TOWER CORP COM 03027X100 46,718 8,349 21.76 9,061 15.56 0.1630
2023-05-15 2023-03-31 13F AMERICAN TOWER CORP COM 03027X100 38,369 3,360 9.60 7,840 5.70 0.1504
2023-02-14 2022-12-31 13F/A-1 AMERICAN TOWER CORP COM 03027X100 35,009 -61 -0.17 7,417 -1.50 0.1520
2023-01-25 2022-12-31 13F AMERICAN TOWER CORP OM 03027X100 35,009 -61 7 0.1520
2022-11-02 2022-09-30 13F AMERICAN TOWER CORP OM 03027X100 35,070 569 1.65 7,530 -14.61 0.1608
2022-08-03 2022-06-30 13F AMERICAN TOWER CORP OM 03027X100 34,501 -626 -1.78 8,818 -0.08 0.1779
2022-05-04 2022-03-31 13F AMERICAN TOWER CORP OM 03027X100 35,127 -444 -1.25 8,825 -15.18 0.1439
2022-03-07 2021-12-31 13F AMERICAN TOWER CORP OM 03027X100 35,571 -21 -0.06 10,404 10.13 0.1574
2021-10-27 2021-09-30 13F AMERICAN TOWER CORP COM 03027X100 35,592 -4,097 -10.32 9,447 -11.89 0.1461
2021-08-12 2021-06-30 13F AMERICAN TOWER CORP COM 03027X100 39,689 183 0.46 10,722 13.53 0.1606
2021-05-14 2021-03-31 13F AMERICAN TOWER CORP COM 03027X100 39,506 -6,340 -13.83 9,444 -8.23 0.1551
2021-02-10 2020-12-31 13F AMERICAN TOWER CORP COM 03027X100 45,846 2,492 5.75 10,291 -1.80 0.1846
2020-11-13 2020-09-30 13F AMERICAN TOWER CORP COM 03027X100 43,354 -710 -1.61 10,480 -8.01 0.2063
2020-08-24 2020-06-30 13F AMERICAN TOWER CORP COM 03027X100 44,064 4,147 10.39 11,392 31.06 0.2449
2020-05-14 2020-03-31 13F AMERICAN TOWER CORP COM 03027X100 39,917 -4,402 -9.93 8,692 -14.66 0.2315
2020-02-14 2019-12-31 13F AMERICAN TOWER CORP COM 03027X100 44,319 2,511 6.01 10,185 10.17 0.2134
2019-10-18 2019-09-30 13F AMERICAN TOWER CORP COM 03027X100 41,808 -8,138 -16.29 9,245 -9.46 0.2034
2019-08-01 2019-06-30 13F AMERICAN TOWER CORP COM 03027X100 49,946 -2,185 -4.19 10,211 -0.60 0.2313
2019-05-03 2019-03-31 13F AMERICAN TOWER CORP COM 03027X100 52,131 2,929 5.95 10,273 31.99 0.2437
2019-02-11 2018-12-31 13F AMERICAN TOWER CORP COM 03027X100 49,202 -1,121 -2.23 7,783 6.44 0.2208
2018-11-14 2018-09-30 13F AMERICAN TOWER CORP COM 03027X100 50,323 1,144 2.33 7,312 3.13 0.1819
2018-08-10 2018-06-30 13F AMERICAN TOWER CORP COM 03027X100 49,179 -4,435 -8.27 7,090 -9.01 0.2142
2018-05-03 2018-03-31 13F AMERICAN TOWER CORP COM 03027X100 53,614 -2,905 -5.14 7,792 -3.37 0.2906
2018-02-05 2017-12-31 13F AMERICAN TOWER CORP COM 03027X100 56,519 -1,074 -1.86 8,064 2.44 0.3017
2017-11-08 2017-09-30 13F AMERICAN TOWER CORP COM 03027X100 57,593 426 0.75 7,872 4.07 0.2843
2017-08-10 2017-06-30 13F AMERICAN TOWER CORP COM 03027X100 57,167 -3,292 -5.45 7,564 2.94 0.2595
2017-05-11 2017-03-31 13F AMERICAN TOWER CORP COM 03027X100 60,459 4,735 8.50 7,348 24.78 0.2671
2017-02-09 2016-12-31 13F AMERICAN TOWER CORP COM 03027X100 55,724 9,982 21.82 5,889 13.60 0.2401
2016-11-30 2016-09-30 13F/A-2 AMERICAN TOWER CORP COM 03027X100 45,742 -2,157 -4.50 5,184 -4.74 0.2270
2016-11-10 2016-09-30 13F AMERICAN TOWER CORP COM 03027X100 45,742 5,184
2016-08-05 2016-06-30 13F AMERICAN TOWER CORP COM 03027X100 47,899 1,799 3.90 5,442 15.32 0.2427
2016-05-05 2016-03-31 13F AMERICAN TOWER CORP COM 03027X100 46,100 2,149 4.89 4,719 10.75 0.2310
2016-02-10 2015-12-31 13F AMERICAN TOWER CORP COM 03027X100 43,951 40,599 1,211.19 4,261 1,344.41 0.2137
2015-11-03 2015-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,352 153 4.78 295 -1.01 0.0154
2015-07-29 2015-06-30 13F AMERICAN TOWER CORP COM 03027X100 3,199 -1,516 -32.15 298 -32.88 0.0135
2015-05-06 2015-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,715 -885 -15.80 444 -19.86 0.0202
2015-02-12 2014-12-31 13F AMERICAN TOWER CORP COM 03027X100 5,600 1,038 22.75 554 29.74 0.0262
2014-11-14 2014-09-30 13F AMERICAN TOWER CORP COM 03027X100 4,562 72 1.60 427 5.69 0.0211
2014-08-15 2014-06-30 13F AMERICAN TOWER CORP COM 03027X100 4,490 227 5.32 404 15.76 0.0203
2014-05-13 2014-03-31 13F AMERICAN TOWER CORP COM 03027X100 4,263 997 30.53 349 33.72 0.0190
2014-02-14 2013-12-31 13F AMERICAN TOWER CORP COM 03027X100 3,266 -135 -3.97 261 3.57 0.0130
2013-11-06 2013-09-30 13F AMERICAN TOWER CORP COM 03027X100 3,401 -24,988 -88.02 252 -87.87 0.0136
2013-08-12 2013-06-30 13F AMERICAN TOWER CORP COM 03027X100 28,389 28,389 2,077 0.1160
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.