AMERICAN TOWER CORP NEW

Ticker: AMT CUSIP: 03027X100 Class: COM

Broad Run Investment Management, LLC's Holding History (CIK: 0001568621)

Note: Option positions (PUT/CALL) are excluded.

Q4 2025

Shares 109,875 Value ($000) $19,291 Avg Close $180.30 Range $169.12 - $192.63

Q3 2025

Shares 112,276 Value ($000) $21,593 Avg Close $204.56 Range $185.10 - $230.04

Q2 2025

Shares 120,300 Value ($000) $26,589 Avg Close $210.37 Range $190.80 - $225.87

Q1 2025

Shares 127,912 Value ($000) $27,834 Avg Close $189.52 Range $166.66 - $212.16

Q4 2024

Shares 210,435 Value ($000) $38,596 Avg Close $198.35 Range $171.45 - $222.90

Q3 2024

Shares 246,177 Value ($000) $57,251 Avg Close $210.79 Range $182.10 - $231.55

Q2 2024

Shares 270,520 Value ($000) $52,584 Avg Close $176.27 Range $160.72 - $190.06

Q1 2024

Shares 277,346 Value ($000) $54,801 Avg Close $186.13 Range $169.29 - $204.74

Q4 2023

Shares 282,129 Value ($000) $60,906 Avg Close $175.15 Range $141.88 - $204.01

Q3 2023

Shares 334,037 Value ($000) $54,932 Avg Close $167.65 Range $145.17 - $184.31

Q2 2023

Shares 338,713 Value ($000) $65,690 Avg Close $178.08 Range $162.53 - $192.95

Q1 2023

Shares 358,569 Value ($000) $73,270 Avg Close $189.59 Range $171.12 - $212.87

Q4 2022

Shares 377,616 Value ($000) $80,002 Avg Close $186.71 Range $159.82 - $204.49

Q3 2022

Shares 460,017 Value ($000) $98,766 Avg Close $228.80 Range $188.24 - $251.54

Q2 2022

Shares 503,152 Value ($000) $128,601 Avg Close $222.20 Range $196.54 - $240.37

Q1 2022

Shares 575,504 Value ($000) $144,578 Avg Close $214.86 Range $193.72 - $257.60

Q4 2021

Shares 572,902 Value ($000) $167,574 Avg Close $239.48 Range $222.02 - $259.23

Q3 2021

Shares 573,895 Value ($000) $152,317 Avg Close $248.67 Range $232.43 - $264.88

Q2 2021

Shares 601,300 Value ($000) $162,435 Avg Close $221.28 Range $204.65 - $239.67

Q1 2021

Shares 610,372 Value ($000) $145,916 Avg Close $192.28 Range $170.54 - $209.67

Q4 2020

Shares 625,920 Value ($000) $140,494 Avg Close $199.71 Range $184.97 - $217.31

Q3 2020

Shares 633,051 Value ($000) $153,027 Avg Close $216.72 Range $200.88 - $232.60

Q2 2020

Shares 635,693 Value ($000) $164,352 Avg Close $210.56 Range $171.21 - $229.12

Q1 2020

Shares 741,706 Value ($000) $161,506 Avg Close $197.22 Range $147.72 - $219.16

Q4 2019

Shares 1,018,055 Value ($000) $233,969 Avg Close $183.82 Range $171.19 - $195.06

Q3 2019

Shares 1,113,246 Value ($000) $246,172 Avg Close $183.38 Range $167.57 - $203.29

Q2 2019

Shares 1,170,728 Value ($000) $239,355 Avg Close $168.17 Range $157.69 - $183.80

Q1 2019

Shares 1,327,006 Value ($000) $261,500 Avg Close $146.03 Range $128.16 - $164.30

Q4 2018

Shares 1,551,210 Value ($000) $245,386 Avg Close $129.50 Range $116.26 - $139.59

Q3 2018

Shares 1,976,825 Value ($000) $287,233 Avg Close $120.79 Range $114.07 - $125.11

Q2 2018

Shares 2,255,688 Value ($000) $325,203 Avg Close $113.83 Range $109.35 - $119.75

Q1 2018

Shares 2,441,213 Value ($000) $354,806 Avg Close $114.77 Range $106.21 - $122.30

Q4 2017

Shares 2,419,788 Value ($000) $345,231 Avg Close $115.75 Range $109.97 - $125.87

Q3 2017

Shares 2,422,381 Value ($000) $331,091 Avg Close $112.31 Range $105.52 - $119.95

Q2 2017

Shares 2,433,261 Value ($000) $321,969 Avg Close $102.88 Range $96.18 - $110.06

Q1 2017

Shares 2,435,591 Value ($000) $296,022 Avg Close $87.85 Range $81.86 - $97.31

Q4 2016

Shares 2,364,585 Value ($000) $249,889 Avg Close $86.33 Range $79.20 - $93.79

Q3 2016

Shares 2,260,382 Value ($000) $256,169 Avg Close $90.38 Range $85.02 - $93.47

Q2 2016

Shares 2,236,104 Value ($000) $254,044 Avg Close $83.75 Range $79.73 - $89.81

Q1 2016

Shares 2,221,502 Value ($000) $227,415 Avg Close $73.16 Range $65.02 - $80.56

Q4 2015

Shares 2,221,415 Value ($000) $215,366 Avg Close $75.94 Range $67.91 - $81.06

Q3 2015

Shares 2,094,214 Value ($000) $184,249 Avg Close $72.97 Range $67.60 - $78.65

Q2 2015

Shares 1,772,786 Value ($000) $165,383 Avg Close $72.97 Range $70.92 - $75.72

Q1 2015

Shares 1,642,757 Value ($000) $154,666 Avg Close $74.63 Range $71.55 - $78.20

Q4 2014

Shares 1,516,136 Value ($000) $149,870 Avg Close $75.17 Range $68.98 - $81.29

Q3 2014

Shares 1,515,360 Value ($000) $141,883 Avg Close $72.53 Range $67.84 - $76.11

Q2 2014

Shares 1,514,135 Value ($000) $136,241 Avg Close $65.68 Range $60.55 - $68.85

Q1 2014

Shares 1,511,951 Value ($000) $123,783 Avg Close $61.59 Range $59.25 - $64.17

Q4 2013

Shares 1,375,099 Value ($000) $109,760 Avg Close $58.52 Range $53.88 - $61.27

Q3 2013

Shares 1,297,431 Value ($000) $96,179 Avg Close $54.19 Range $50.94 - $58.77

Q2 2013

Shares 1,038,864 Value ($000) $76,013 Avg Close $59.51 Range $52.17 - $63.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	109,875	$19,291	$180.30	$169.12 - $192.63
Q3 2025	112,276	$21,593	$204.56	$185.10 - $230.04
Q2 2025	120,300	$26,589	$210.37	$190.80 - $225.87
Q1 2025	127,912	$27,834	$189.52	$166.66 - $212.16
Q4 2024	210,435	$38,596	$198.35	$171.45 - $222.90
Q3 2024	246,177	$57,251	$210.79	$182.10 - $231.55
Q2 2024	270,520	$52,584	$176.27	$160.72 - $190.06
Q1 2024	277,346	$54,801	$186.13	$169.29 - $204.74
Q4 2023	282,129	$60,906	$175.15	$141.88 - $204.01
Q3 2023	334,037	$54,932	$167.65	$145.17 - $184.31
Q2 2023	338,713	$65,690	$178.08	$162.53 - $192.95
Q1 2023	358,569	$73,270	$189.59	$171.12 - $212.87
Q4 2022	377,616	$80,002	$186.71	$159.82 - $204.49
Q3 2022	460,017	$98,766	$228.80	$188.24 - $251.54
Q2 2022	503,152	$128,601	$222.20	$196.54 - $240.37
Q1 2022	575,504	$144,578	$214.86	$193.72 - $257.60
Q4 2021	572,902	$167,574	$239.48	$222.02 - $259.23
Q3 2021	573,895	$152,317	$248.67	$232.43 - $264.88
Q2 2021	601,300	$162,435	$221.28	$204.65 - $239.67
Q1 2021	610,372	$145,916	$192.28	$170.54 - $209.67
Q4 2020	625,920	$140,494	$199.71	$184.97 - $217.31
Q3 2020	633,051	$153,027	$216.72	$200.88 - $232.60
Q2 2020	635,693	$164,352	$210.56	$171.21 - $229.12
Q1 2020	741,706	$161,506	$197.22	$147.72 - $219.16
Q4 2019	1,018,055	$233,969	$183.82	$171.19 - $195.06
Q3 2019	1,113,246	$246,172	$183.38	$167.57 - $203.29
Q2 2019	1,170,728	$239,355	$168.17	$157.69 - $183.80
Q1 2019	1,327,006	$261,500	$146.03	$128.16 - $164.30
Q4 2018	1,551,210	$245,386	$129.50	$116.26 - $139.59
Q3 2018	1,976,825	$287,233	$120.79	$114.07 - $125.11
Q2 2018	2,255,688	$325,203	$113.83	$109.35 - $119.75
Q1 2018	2,441,213	$354,806	$114.77	$106.21 - $122.30
Q4 2017	2,419,788	$345,231	$115.75	$109.97 - $125.87
Q3 2017	2,422,381	$331,091	$112.31	$105.52 - $119.95
Q2 2017	2,433,261	$321,969	$102.88	$96.18 - $110.06
Q1 2017	2,435,591	$296,022	$87.85	$81.86 - $97.31
Q4 2016	2,364,585	$249,889	$86.33	$79.20 - $93.79
Q3 2016	2,260,382	$256,169	$90.38	$85.02 - $93.47
Q2 2016	2,236,104	$254,044	$83.75	$79.73 - $89.81
Q1 2016	2,221,502	$227,415	$73.16	$65.02 - $80.56
Q4 2015	2,221,415	$215,366	$75.94	$67.91 - $81.06
Q3 2015	2,094,214	$184,249	$72.97	$67.60 - $78.65
Q2 2015	1,772,786	$165,383	$72.97	$70.92 - $75.72
Q1 2015	1,642,757	$154,666	$74.63	$71.55 - $78.20
Q4 2014	1,516,136	$149,870	$75.17	$68.98 - $81.29
Q3 2014	1,515,360	$141,883	$72.53	$67.84 - $76.11
Q2 2014	1,514,135	$136,241	$65.68	$60.55 - $68.85
Q1 2014	1,511,951	$123,783	$61.59	$59.25 - $64.17
Q4 2013	1,375,099	$109,760	$58.52	$53.88 - $61.27
Q3 2013	1,297,431	$96,179	$54.19	$50.94 - $58.77
Q2 2013	1,038,864	$76,013	$59.51	$52.17 - $63.74