Blair William & Co

SEC CIK: 0000902367
Latest filing: Aug 11, 2026

SEC filings (opens in a new tab)

AMT holding history

American Tower Corp in every 13F filed by Blair William & Co, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

AMT overview All 13F holders of AMT Full Q2 2026 holdings

Shares (Q2 2026): 421,304
Value: $68.9M
% of portfolio: 0.2%
Quarters held: 22; Since Q1 2021

Holdings of AMT by Blair William & Co, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	421,304	$68.9M	0.2%	−48,824−10.4%	Reduced	Holders
Q1 2026	470,128	$81.1M	0.2%	−208,116−30.7%	Reduced	Holders
Q4 2025	678,244	$119.1M	0.3%	−103,804−13.3%	Reduced	Holders
Q3 2025	782,048	$150.4M	0.4%	+8,874+1.1%	Added	Holders
Q2 2025	773,174	$170.9M	0.5%	−4,015−0.5%	Reduced	Holders
Q1 2025	777,189	$169.1M	0.5%	−13,308−1.7%	Reduced	Holders
Q4 2024	790,497	$145.0M	0.4%	−5,508−0.7%	Reduced	Holders
Q3 2024	796,005	$185.1M	0.5%	+21,390+2.8%	Added	Holders
Q2 2024	774,615	$150.6M	0.5%	+13,258+1.7%	Added	Holders
Q1 2024	761,357	$150.4M	0.5%	+57,165+8.1%	Added	Holders
Q4 2023	704,192	$152.0M	0.5%	+27,046+4.0%	Added	Holders
Q3 2023	677,146	$111.4M	0.4%	−59,740−8.1%	Reduced	Holders
Q2 2023	736,886	$142.9M	0.5%	+25,662+3.6%	Added	Holders
Q1 2023	711,224	$145.3M	0.6%	−2,490−0.3%	Reduced	Holders
Q4 2022	713,714	$151.2M	0.7%	−17,034−2.3%	Reduced	Holders
Q3 2022	730,748	$156.9M	0.7%	−4,095−0.6%	Reduced	Holders
Q2 2022	734,843	$187.8M	0.8%	+712+0.1%	Added	Holders
Q1 2022	734,131	$184.4M	0.6%	−6,202−0.8%	Reduced	Holders
Q4 2021	740,333	$216.5M	0.7%	+11,334+1.6%	Added	Holders
Q3 2021	728,999	$193.5M	0.7%	+13,900+1.9%	Added	Holders
Q2 2021	715,099	$193.2M	0.7%	+7,465+1.1%	Added	Holders
Q1 2021	707,634	$169.2M	0.6%	–	–	Holders

Livermore's 13F data starts with Q1 2021, so Q1 2021 has no change from the previous quarter.