American Tower Corp
US ˙ NYSE
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SecurityAMT.PRB / American Tower Corp
InstitutionSimplex Trading, Llc
Simplex Trading, Llc ownership in AMT.PRB / American Tower Corp

Simplex Trading, Llc has a history of taking positions in derivatives of the underlying security (AMT.PRB) in the form of stock options. The firm currently holds call options representing 23,300 of underlying shares valued at $4,021,114 USD and put options representing 67,400 of underlying shares valued at $11,631,892 USD .

Note: prior versions of this page mistakenly stated that the share values represented the number of options, not the number of underlying shares. For more information on the data backing these reports, please see the SEC document Frequently Asked Questions About Form 13F.

Institutional Put/Call Ratios
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In addition to reporting standard equity and debt issues, institutions with more than 100MM assets under management must also disclose their put and call option holdings. Since put options generally indicate negative sentiment, and call options indicate positive sentiment, we can get a sense of the overall institutional sentiment by plotting the ratio of puts to calls. The chart to the right plots the historical put/call ratio for this instrument.

Using Put/Call Ratio as an indicator of investor sentiment overcomes one of the key deficiencies of using total institutional ownership, which is that a significant amount of assets under management are invested passively to track indices. Passively-managed funds do not typically buy options, so the put/call ratio indicator more closely tracks the sentiment of actively-managed funds.

AMT.PRB / American Tower Corp Historical Put/Call Ratio
Disclosed Call Options
File
Date		 Effective
Date		Form Security Class ID Opt Avg Share
Price		 Shares ΔShares
(%)		 Value
(x1000)		 ΔValue
(%)		 Prior Allocation
(%)		 Allocation
(%)		 ΔAllocation
(%)		 Cost Basis
(x1000)		 Profit
(x1000)		 Return
(%)
2026-05-14 2026-03-31 13F AMERICAN TOWER CALL Call 23,300 -33.81 4,021 -34.94 n/a n/a n/a
2026-02-11 2025-12-31 13F AMERICAN TOWER CORP CALL Call 35,200 -42.86 6,180 56,081.82 n/a n/a n/a
2025-11-12 2025-09-30 13F AMERICAN TOWER CORP CALL Call 61,600 49.15 12 22.22 n/a n/a n/a
2025-08-05 2025-06-30 13F AMERICAN TOWER CORP CALL Call 41,300 -11.37 9 -10.00 n/a n/a n/a
2025-05-12 2025-03-31 13F AMERICAN TOWER CORP CALL Call 46,600 -47.58 10 -37.50 n/a n/a n/a
2025-02-11 2024-12-31 13F AMERICAN TOWER CORP CALL Call 88,900 -28.07 16 -42.86 n/a n/a n/a
2024-11-08 2024-09-30 13F AMERICAN TOWER CORP CALL Call 123,600 35.38 29 64.71 n/a n/a n/a
2024-07-25 2024-06-30 13F AMERICAN TOWER CORP CALL Call 91,300 -79.72 18 -80.68 n/a n/a n/a
2024-04-25 2024-03-31 13F AMERICAN TOWER CORP CALL Call 450,200 4.29 89 -5.38 n/a n/a n/a
2024-02-02 2023-12-31 13F AMERICAN TOWER CORP CALL Call 431,700 -8.31 93 20.78 n/a n/a n/a
2023-11-01 2023-09-30 13F AMERICAN TOWER CORP CALL Call 470,800 323.00 77 266.67 n/a n/a n/a
2023-08-04 2023-06-30 13F AMERICAN TOWER CORP CALL Call 111,300 -29.06 22 -34.37 n/a n/a n/a
2023-04-27 2023-03-31 13F AMERICAN TOWER CORP CALL Call 156,900 37.63 32 33.33 n/a n/a n/a
2023-02-02 2022-12-31 13F AMERICAN TOWER CORP CALL Call 114,000 43.94 24 -99.86 n/a n/a n/a
2022-11-04 2022-09-30 13F AMERICAN TOWER CORP CALL Call 79,200 -26.39 17,004 -38.17 n/a n/a n/a
2022-08-03 2022-06-30 13F AMERICAN TOWER CORP CALL Call 107,600 -7.48 27,501 -5.87 n/a n/a n/a
2022-05-02 2022-03-31 13F AMERICAN TOWER CORP CALL Call 116,300 56.53 29,216 34.44 n/a n/a n/a
2022-02-23 2021-12-31 13F/A AMERICAN TOWER CORP CALL Call 74,300 104.68 21,732 121.48 n/a n/a n/a
2022-02-04 2021-12-31 13F AMERICAN TOWER CORP CALL Call 36,300 9,812 n/a n/a n/a
2021-10-28 2021-09-30 13F AMERICAN TOWER CORP CALL Call 36,300 1.68 9,812 1.75 n/a n/a n/a
2021-08-12 2021-06-30 13F AMERICAN TOWER CORP CALL Call 35,700 2,697.81 9,643 -68.39 n/a n/a n/a
2021-04-26 2021-03-31 13F AMERICAN TOWER CORP CALL Call 1,276 67.02 30,504 77.89 n/a n/a n/a
2021-02-02 2020-12-31 13F AMERICAN TOWER CORP CALL Call 764 -16.59 17,148 -22.55 n/a n/a n/a
2020-10-14 2020-09-30 13F AMERICAN TOWER CORP CALL Call 916 3.85 22,142 -2.90 n/a n/a n/a
2020-07-13 2020-06-30 13F AMERICAN TOWER CORP CALL Call 882 5.00 22,803 24.67 n/a n/a n/a
2020-04-29 2020-03-31 13F AMERICAN TOWER CORP CALL Call 840 -31.26 18,291 -34.87 n/a n/a n/a
2020-02-05 2019-12-31 13F AMERICAN TOWER CORP CALL Call 1,222 0.99 28,084 4.96 n/a n/a n/a
2019-10-15 2019-09-30 13F AMERICAN TOWER CORP CALL Call 1,210 34.74 26,756 45.74 n/a n/a n/a
2019-07-26 2019-06-30 13F AMERICAN TOWER CORP CALL Call 898 132.64 18,359 141.38 n/a n/a n/a
2019-04-18 2019-03-31 13F AMERICAN TOWER CORP CALL Call 386 -28.65 7,606 -11.12 n/a n/a n/a
2019-01-16 2018-12-31 13F AMERICAN TOWER CORP CALL Call 541 25.81 8,558 36.99 n/a n/a n/a
2018-10-23 2018-09-30 13F AMERICAN TOWER CORP CALL Call 430 16.85 6,247 17.76 n/a n/a n/a
2018-07-30 2018-06-30 13F AMERICAN TOWER CORP CALL Call 368 -99.19 5,305 -22.40 n/a n/a n/a
2018-04-26 2018-03-31 13F AMERICAN TOWER CORP CALL Call 45,244 26,204.65 6,836 10,581.25 n/a n/a n/a
2018-01-10 2017-12-31 13F AMERICAN TOWER CORP CALL Call 172 -56.01 64 -64.04 n/a n/a n/a
2017-10-25 2017-09-30 13F AMERICAN TOWER CORP CALL Call 391 -8.64 178 -55.50 n/a n/a n/a
2017-07-12 2017-06-30 13F AMERICAN TOWER CORP CALL Call 428 36.31 400 -17.86 n/a n/a n/a
2017-04-21 2017-03-31 13F AMERICAN TOWER CORP CALL Call 314 -7.10 487 83.77 n/a n/a n/a
2017-01-11 2016-12-31 13F AMERICAN TOWER CORP CALL Call 338 -5.59 265 -34.41 n/a n/a n/a
2016-10-07 2016-09-30 13F AMERICAN TOWER CORP CALL Call 358 -63.02 404 -63.96 n/a n/a n/a
2016-07-18 2016-06-30 13F AMERICAN TOWER CORP CALL Call 968 48.69 1,121 211.39 n/a n/a n/a
2016-04-14 2016-03-31 13F AMERICAN TOWER CORP CALL Call 651 64.39 360 40.08 n/a n/a n/a
2016-01-20 2015-12-31 13F AMERICAN TOWER CORP CALL Call 396 -34.11 257 295.38 n/a n/a n/a
2015-10-08 2015-09-30 13F AMERICAN TOWER CORP CALL Call 601 170.72 65 -31.58 n/a n/a n/a
2015-07-08 2015-06-30 13F AMERICAN TOWER CORP CALL Call 222 43.23 95 50.79 n/a n/a n/a
2015-04-21 2015-03-31 13F AMERICAN TOWER CORP CALL Call 155 42.20 63 -24.10 n/a n/a n/a
2015-03-04 2014-12-31 13F AMERICAN TOWER CALL Call 109 83 n/a n/a n/a
Disclosed Put Options
File
Date		 Effective
Date		Form Security Class ID Opt Avg Share Price Shares ΔShares
(%)		 Value
(x1000)		 ΔValue
(%)		 Prior Allocation
(%)		 Allocation
(%)		 ΔAllocation
(%)		 Cost Basis
(x1000)		 Profit
(x1000)		 Return
(%)
2026-05-14 2026-03-31 13F AMERICAN TOWER PUT Put 67,400 106.75 11,632 103.23 n/a n/a n/a
2026-02-11 2025-12-31 13F AMERICAN TOWER CORP PUT Put 32,600 -40.07 5,724 57,130.00 n/a n/a n/a
2025-11-12 2025-09-30 13F AMERICAN TOWER CORP PUT Put 54,400 -8.26 10 -23.08 n/a n/a n/a
2025-08-05 2025-06-30 13F AMERICAN TOWER CORP PUT Put 59,300 34.77 13 44.44 n/a n/a n/a
2025-05-12 2025-03-31 13F AMERICAN TOWER CORP PUT Put 44,000 -28.57 10 -18.18 n/a n/a n/a
2025-02-11 2024-12-31 13F AMERICAN TOWER CORP PUT Put 61,600 -50.12 11 -60.71 n/a n/a n/a
2024-11-08 2024-09-30 13F AMERICAN TOWER CORP PUT Put 123,500 -15.47 29 0.00 n/a n/a n/a
2024-07-25 2024-06-30 13F AMERICAN TOWER CORP PUT Put 146,100 -43.53 28 -45.10 n/a n/a n/a
2024-04-25 2024-03-31 13F AMERICAN TOWER CORP PUT Put 258,700 23.07 51 13.33 n/a n/a n/a
2024-02-02 2023-12-31 13F AMERICAN TOWER CORP PUT Put 210,200 92.14 45 164.71 n/a n/a n/a
2023-11-01 2023-09-30 13F AMERICAN TOWER CORP PUT Put 109,400 170.12 18 142.86 n/a n/a n/a
2023-08-04 2023-06-30 13F AMERICAN TOWER CORP PUT Put 40,500 -74.56 8 -78.12 n/a n/a n/a
2023-04-27 2023-03-31 13F AMERICAN TOWER CORP PUT Put 159,200 22.18 33 18.52 n/a n/a n/a
2023-02-02 2022-12-31 13F AMERICAN TOWER CORP PUT Put 130,300 270.17 28 -99.64 n/a n/a n/a
2022-11-04 2022-09-30 13F AMERICAN TOWER CORP PUT Put 35,200 -17.56 7,557 -30.75 n/a n/a n/a
2022-08-03 2022-06-30 13F AMERICAN TOWER CORP PUT Put 42,700 -51.31 10,913 -50.47 n/a n/a n/a
2022-05-02 2022-03-31 13F AMERICAN TOWER CORP PUT Put 87,700 35.97 22,031 16.78 n/a n/a n/a
2022-02-23 2021-12-31 13F/A AMERICAN TOWER CORP PUT Put 64,500 -17.31 18,866 -10.52 n/a n/a n/a
2022-02-04 2021-12-31 13F AMERICAN TOWER CORP PUT Put 78,000 21,085 n/a n/a n/a
2021-10-28 2021-09-30 13F AMERICAN TOWER CORP PUT Put 78,000 4.70 21,085 4.77 n/a n/a n/a
2021-08-12 2021-06-30 13F AMERICAN TOWER CORP PUT Put 74,500 6,798.15 20,125 -22.05 n/a n/a n/a
2021-04-26 2021-03-31 13F AMERICAN TOWER CORP PUT Put 1,080 45.16 25,818 54.61 n/a n/a n/a
2021-02-02 2020-12-31 13F AMERICAN TOWER CORP PUT Put 744 22.98 16,699 14.19 n/a n/a n/a
2020-10-14 2020-09-30 13F AMERICAN TOWER CORP PUT Put 605 42.35 14,624 33.10 n/a n/a n/a
2020-07-13 2020-06-30 13F AMERICAN TOWER CORP PUT Put 425 13.33 10,987 34.56 n/a n/a n/a
2020-04-29 2020-03-31 13F AMERICAN TOWER CORP PUT Put 375 -65.85 8,165 -67.64 n/a n/a n/a
2020-02-05 2019-12-31 13F AMERICAN TOWER CORP PUT Put 1,098 6.09 25,234 10.26 n/a n/a n/a
2019-10-15 2019-09-30 13F AMERICAN TOWER CORP PUT Put 1,035 -54.00 22,886 -50.25 n/a n/a n/a
2019-07-26 2019-06-30 13F AMERICAN TOWER CORP PUT Put 2,250 83.67 46,001 90.57 n/a n/a n/a
2019-04-18 2019-03-31 13F AMERICAN TOWER CORP PUT Put 1,225 33.59 24,139 66.41 n/a n/a n/a
2019-01-16 2018-12-31 13F AMERICAN TOWER CORP PUT Put 917 13.77 14,506 23.87 n/a n/a n/a
2018-10-23 2018-09-30 13F AMERICAN TOWER CORP PUT Put 806 -41.00 11,711 -40.53 n/a n/a n/a
2018-07-30 2018-06-30 13F AMERICAN TOWER CORP PUT Put 1,366 26.72 19,693 11,217.82 n/a n/a n/a
2018-04-26 2018-03-31 13F AMERICAN TOWER CORP PUT Put 1,078 82.09 174 97.73 n/a n/a n/a
2018-01-10 2017-12-31 13F AMERICAN TOWER CORP PUT Put 592 17.46 88 125.64 n/a n/a n/a
2017-10-25 2017-09-30 13F AMERICAN TOWER CORP PUT Put 504 -45.45 39 0.00 n/a n/a n/a
2017-07-12 2017-06-30 13F AMERICAN TOWER CORP PUT Put 924 24.03 39 8.33 n/a n/a n/a
2017-04-21 2017-03-31 13F AMERICAN TOWER CORP PUT Put 745 73.26 36 -46.27 n/a n/a n/a
2017-01-11 2016-12-31 13F AMERICAN TOWER CORP PUT Put 430 -17.47 67 31.37 n/a n/a n/a
2016-10-07 2016-09-30 13F AMERICAN TOWER CORP PUT Put 521 86.74 51 131.82 n/a n/a n/a
2016-07-18 2016-06-30 13F AMERICAN TOWER CORP PUT Put 279 88.51 22 -53.19 n/a n/a n/a
2016-04-14 2016-03-31 13F AMERICAN TOWER CORP PUT Put 148 -6.33 47 -64.93 n/a n/a n/a
2016-01-20 2015-12-31 13F AMERICAN TOWER CORP PUT Put 158 -6.51 134 -49.24 n/a n/a n/a
2015-10-08 2015-09-30 13F AMERICAN TOWER CORP PUT Put 169 -53.57 264 38.95 n/a n/a n/a
2015-07-08 2015-06-30 13F AMERICAN TOWER CORP PUT Put 364 110.40 190 49.61 n/a n/a n/a
2015-04-21 2015-03-31 13F AMERICAN TOWER CORP PUT Put 173 44.17 127 452.17 n/a n/a n/a
2015-03-04 2014-12-31 13F AMERICAN TOWER PUT Put 120 23 n/a n/a n/a
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.