American Tower Corporation
US ˙ NYSE ˙ US03027X1000

SecurityAMT / American Tower Corporation
InstitutionBlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I
Latest Disclosed Ownership1,558 shares
Latest Disclosed Value $ 344,349
BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I reports 952.70% increase in ownership of AMT / American Tower Corporation

On August 28, 2025 - BlackRock Variable Series Funds, Inc. - BlackRock Managed Volatility V.I. Fund Class I filed a NPORT-P form disclosing ownership of 1,558 shares of American Tower Corporation (US:AMT) valued at $344,349 USD as of June 30, 2025. The entity filed a previous NPORT-P on May 27, 2025 disclosing 148 shares of American Tower Corporation. This represents a change in shares of 952.70% during the quarter. The current value of the position is $273,117 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)
2025-08-28 2025-06-30 NP American Tower EC US03027X1000 1,558 1,410 952.70 344 975.00 0.2267
2025-05-27 2025-03-31 NP American Tower EC US03027X1000 148 -583 -79.75 32 -76.12 0.0215
2025-02-27 2024-12-31 NP American Tower EC US03027X1000 731 528 260.10 134 185.11 0.0829
2024-11-26 2024-09-30 NP American Tower EC US03027X1000 203 -179 -46.86 47 -24.19 0.0290
2023-11-22 2023-09-30 NP American Tower EC US03027X1000 382 -431 -53.01 63 -60.51 0.0378
2023-08-25 2023-06-30 NP American Tower EC US03027X1000 813 2 0.25 158 -4.85 0.0922
2023-05-26 2023-03-31 NP American Tower EC US03027X1000 811 -414 -33.80 166 -36.29 0.0979
2023-02-24 2022-12-31 NP American Tower EC US03027X1000 1,225 -265 -17.79 260 -18.81 0.1491
2022-11-28 2022-09-30 NP American Tower EC US03027X1000 1,490 -44 -2.87 320 -18.62 0.1878
2022-08-26 2022-06-30 NP American Tower EC US03027X1000 1,534 31 2.06 392 3.98 0.2201
2022-05-25 2022-03-31 NP American Tower EC US03027X1000 1,503 82 5.77 378 -9.16 0.1905
2022-02-25 2021-12-31 NP American Tower EC US03027X1000 1,421 -144 -9.20 416 0.00 0.1934
2021-11-26 2021-09-30 NP American Tower EC US03027X1000 1,565 186 13.49 415 11.56 0.1901
2021-08-24 2021-06-30 NP American Tower EC US03027X1000 1,379 -27 -1.92 373 10.71 0.1691
2021-05-25 2021-03-31 NP American Tower EC US03027X1000 1,406 291 26.10 336 34.40 0.1533
2021-02-24 2020-12-31 NP American Tower EC US03027X1000 1,115 -186 -14.30 250 -20.38 0.1119
2020-11-24 2020-09-30 NP American Tower EC US03027X1000 1,301 -225 -14.74 314 -20.30 0.1487
2020-08-24 2020-06-30 NP American Tower EC US03027X1000 1,526 -390 -20.35 395 -5.52 0.1889
2020-05-26 2020-03-31 NP American Tower EC US03027X1000 1,916 -230 -10.72 417 -15.42 0.2055
2020-02-25 2019-12-31 NP American Tower EC 03027X100 2,146 2,146 493 0.2088
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.