AMERICAN TOWER CORP NEW

Ticker: AMT CUSIP: 03027X100 Class: COM

BROWN ADVISORY INC's Holding History (CIK: 0001345929)

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

Q4 2025

Shares 153,037 Value ($000) $26,869 Avg Close $180.30 Range $169.12 - $192.63

Q3 2025

Shares 161,941 Value ($000) $31,144 Avg Close $204.56 Range $185.10 - $230.04

Q2 2025

Shares 168,400 Value ($000) $37,220 Avg Close $210.37 Range $190.80 - $225.87

Q1 2025

Shares 171,418 Value ($000) $37,300 Avg Close $189.52 Range $166.66 - $212.16

Q4 2024

Shares 206,141 Value ($000) $37,808 Avg Close $198.35 Range $171.45 - $222.90

Q3 2024

Shares 218,505 Value ($000) $50,816 Avg Close $210.79 Range $182.10 - $231.55

Q2 2024

Shares 224,351 Value ($000) $43,609 Avg Close $176.27 Range $160.72 - $190.06

Q1 2024

Shares 2,771,104 Value ($000) $547,542 Avg Close $186.13 Range $169.29 - $204.74

Q4 2023

Shares 3,707,574 Value ($000) $800,391 Avg Close $175.15 Range $141.88 - $204.01

Q3 2023

Shares 3,705,051 Value ($000) $609,296 Avg Close $167.65 Range $145.17 - $184.31

Q2 2023

Shares 3,638,307 Value ($000) $705,613 Avg Close $178.08 Range $162.53 - $192.95

Q1 2023

Shares 3,205,275 Value ($000) $654,966 Avg Close $189.59 Range $171.12 - $212.87

Q4 2022

Shares 2,979,781 Value ($000) $631,296 Avg Close $186.71 Range $159.82 - $204.49

Q3 2022

Shares 3,021,421 Value ($000) $648,700 Avg Close $228.80 Range $188.24 - $251.54

Q2 2022

Shares 2,591,026 Value ($000) $662,240 Avg Close $222.20 Range $196.54 - $240.37

Q1 2022

Shares 2,775,028 Value ($000) $697,143 Avg Close $214.86 Range $193.72 - $257.60

Q4 2021

Shares 2,800,278 Value ($000) $819,080 Avg Close $239.48 Range $222.02 - $259.23

Q3 2021

Shares 2,449,889 Value ($000) $650,225 Avg Close $248.67 Range $232.43 - $264.88

Q2 2021

Shares 2,163,732 Value ($000) $584,511 Avg Close $221.28 Range $204.65 - $239.67

Q1 2021

Shares 2,033,739 Value ($000) $486,186 Avg Close $192.28 Range $170.54 - $209.67

Q4 2020

Shares 1,828,806 Value ($000) $410,494 Avg Close $199.71 Range $184.97 - $217.31

Q3 2020

Shares 1,574,584 Value ($000) $380,625 Avg Close $216.72 Range $200.88 - $232.60

Q2 2020

Shares 1,337,001 Value ($000) $345,668 Avg Close $210.56 Range $171.21 - $229.12

Q1 2020

Shares 1,153,975 Value ($000) $251,279 Avg Close $197.22 Range $147.72 - $219.16

Q4 2019

Shares 1,022,767 Value ($000) $235,053 Avg Close $183.82 Range $171.19 - $195.06

Q3 2019

Shares 955,640 Value ($000) $211,321 Avg Close $183.38 Range $167.57 - $203.29

Q2 2019

Shares 843,955 Value ($000) $172,548 Avg Close $168.17 Range $157.69 - $183.80

Q1 2019

Shares 824,141 Value ($000) $162,387 Avg Close $146.03 Range $128.16 - $164.30

Q4 2018

Shares 822,217 Value ($000) $130,066 Avg Close $129.50 Range $116.26 - $139.59

Q3 2018

Shares 823,654 Value ($000) $119,678 Avg Close $120.79 Range $114.07 - $125.11

Q2 2018

Shares 747,866 Value ($000) $107,819 Avg Close $113.83 Range $109.35 - $119.75

Q1 2018

Shares 683,768 Value ($000) $99,378 Avg Close $114.77 Range $106.21 - $122.30

Q4 2017

Shares 665,192 Value ($000) $94,905 Avg Close $115.75 Range $109.97 - $125.87

Q3 2017

Shares 620,750 Value ($000) $84,844 Avg Close $112.31 Range $105.52 - $119.95

Q2 2017

Shares 606,985 Value ($000) $80,317 Avg Close $102.88 Range $96.18 - $110.06

Q1 2017

Shares 582,035 Value ($000) $70,740 Avg Close $87.85 Range $81.86 - $97.31

Q4 2016

Shares 543,483 Value ($000) $57,435 Avg Close $86.33 Range $79.20 - $93.79

Q3 2016

Shares 479,606 Value ($000) $54,353 Avg Close $90.38 Range $85.02 - $93.47

Q2 2016

Shares 452,735 Value ($000) $51,435 Avg Close $83.75 Range $79.73 - $89.81

Q1 2016

Shares 430,199 Value ($000) $44,040 Avg Close $73.16 Range $65.02 - $80.56

Q4 2015

Shares 374,257 Value ($000) $36,285 Avg Close $75.94 Range $67.91 - $81.06

Q3 2015

Shares 301,507 Value ($000) $26,526 Avg Close $72.97 Range $67.60 - $78.65

Q2 2015

Shares 192,942 Value ($000) $17,999 Avg Close $72.97 Range $70.92 - $75.72

Q1 2015

Shares 194,114 Value ($000) $18,276 Avg Close $74.63 Range $71.55 - $78.20

Q4 2014

Shares 177,813 Value ($000) $17,577 Avg Close $75.17 Range $68.98 - $81.29

Q3 2014

Shares 177,924 Value ($000) $16,659 Avg Close $72.53 Range $67.84 - $76.11

Q2 2014

Shares 176,400 Value ($000) $15,872 Avg Close $65.68 Range $60.55 - $68.85

Q1 2014

Shares 194,436 Value ($000) $15,919 Avg Close $61.59 Range $59.25 - $64.17

Q4 2013

Shares 188,924 Value ($000) $15,079 Avg Close $58.52 Range $53.88 - $61.27

Q3 2013

Shares 196,474 Value ($000) $14,564 Avg Close $54.19 Range $50.94 - $58.77

Q2 2013

Shares 176,562 Value ($000) $12,919 Avg Close $59.51 Range $52.17 - $63.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	153,037	$26,869	$180.30	$169.12 - $192.63
Q3 2025	161,941	$31,144	$204.56	$185.10 - $230.04
Q2 2025	168,400	$37,220	$210.37	$190.80 - $225.87
Q1 2025	171,418	$37,300	$189.52	$166.66 - $212.16
Q4 2024	206,141	$37,808	$198.35	$171.45 - $222.90
Q3 2024	218,505	$50,816	$210.79	$182.10 - $231.55
Q2 2024	224,351	$43,609	$176.27	$160.72 - $190.06
Q1 2024	2,771,104	$547,542	$186.13	$169.29 - $204.74
Q4 2023	3,707,574	$800,391	$175.15	$141.88 - $204.01
Q3 2023	3,705,051	$609,296	$167.65	$145.17 - $184.31
Q2 2023	3,638,307	$705,613	$178.08	$162.53 - $192.95
Q1 2023	3,205,275	$654,966	$189.59	$171.12 - $212.87
Q4 2022	2,979,781	$631,296	$186.71	$159.82 - $204.49
Q3 2022	3,021,421	$648,700	$228.80	$188.24 - $251.54
Q2 2022	2,591,026	$662,240	$222.20	$196.54 - $240.37
Q1 2022	2,775,028	$697,143	$214.86	$193.72 - $257.60
Q4 2021	2,800,278	$819,080	$239.48	$222.02 - $259.23
Q3 2021	2,449,889	$650,225	$248.67	$232.43 - $264.88
Q2 2021	2,163,732	$584,511	$221.28	$204.65 - $239.67
Q1 2021	2,033,739	$486,186	$192.28	$170.54 - $209.67
Q4 2020	1,828,806	$410,494	$199.71	$184.97 - $217.31
Q3 2020	1,574,584	$380,625	$216.72	$200.88 - $232.60
Q2 2020	1,337,001	$345,668	$210.56	$171.21 - $229.12
Q1 2020	1,153,975	$251,279	$197.22	$147.72 - $219.16
Q4 2019	1,022,767	$235,053	$183.82	$171.19 - $195.06
Q3 2019	955,640	$211,321	$183.38	$167.57 - $203.29
Q2 2019	843,955	$172,548	$168.17	$157.69 - $183.80
Q1 2019	824,141	$162,387	$146.03	$128.16 - $164.30
Q4 2018	822,217	$130,066	$129.50	$116.26 - $139.59
Q3 2018	823,654	$119,678	$120.79	$114.07 - $125.11
Q2 2018	747,866	$107,819	$113.83	$109.35 - $119.75
Q1 2018	683,768	$99,378	$114.77	$106.21 - $122.30
Q4 2017	665,192	$94,905	$115.75	$109.97 - $125.87
Q3 2017	620,750	$84,844	$112.31	$105.52 - $119.95
Q2 2017	606,985	$80,317	$102.88	$96.18 - $110.06
Q1 2017	582,035	$70,740	$87.85	$81.86 - $97.31
Q4 2016	543,483	$57,435	$86.33	$79.20 - $93.79
Q3 2016	479,606	$54,353	$90.38	$85.02 - $93.47
Q2 2016	452,735	$51,435	$83.75	$79.73 - $89.81
Q1 2016	430,199	$44,040	$73.16	$65.02 - $80.56
Q4 2015	374,257	$36,285	$75.94	$67.91 - $81.06
Q3 2015	301,507	$26,526	$72.97	$67.60 - $78.65
Q2 2015	192,942	$17,999	$72.97	$70.92 - $75.72
Q1 2015	194,114	$18,276	$74.63	$71.55 - $78.20
Q4 2014	177,813	$17,577	$75.17	$68.98 - $81.29
Q3 2014	177,924	$16,659	$72.53	$67.84 - $76.11
Q2 2014	176,400	$15,872	$65.68	$60.55 - $68.85
Q1 2014	194,436	$15,919	$61.59	$59.25 - $64.17
Q4 2013	188,924	$15,079	$58.52	$53.88 - $61.27
Q3 2013	196,474	$14,564	$54.19	$50.94 - $58.77
Q2 2013	176,562	$12,919	$59.51	$52.17 - $63.74