CSS LLC

SEC CIK: 0001103646
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

AMT holding history

American Tower Corp in every 13F filed by CSS LLC, 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): 3,666
Value: $599.6K
% of portfolio: <0.1%
Quarters held: 3; Since Q4 2025

Holdings of AMT by CSS LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	3,666	$599.6K	<0.1%	+586+19.0%	Added	Holders
Q1 2026	3,080	$531.5K	<0.1%	+110+3.7%	Added	Holders
Q4 2025	2,970	$521.4K	<0.1%	+2,970	New	Holders