Altar Rock LLC

SEC CIK: 0002156071
Latest filing: Sep 21, 2026

SEC filings (opens in a new tab)

AMG holding history

Affiliated Managers Group, Inc. in every 13F filed by Altar Rock LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

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

Shares (Q2 2026): 10,722
Value: $3.63M
% of portfolio: 5.3%
Quarters held: 3; Since Q4 2025

Holdings of AMG by Altar Rock LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	10,722	$3.63M	5.3%	−2,747−20.4%	Reduced	Holders
Q1 2026	13,469	$3.73M	4.4%	−2,073−13.3%	Reduced	Holders
Q4 2025	15,542	$4.48M	5.4%	–	No prior filing	Holders