Summit Trail Advisors, LLC

SEC CIK: 0001698478
Latest filing: Aug 11, 2026

SEC filings (opens in a new tab)

AMTM holding history

Amentum Holdings, Inc. in every 13F filed by Summit Trail Advisors, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

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

Shares (Q2 2026): 20,229
Value: $418.1K
% of portfolio: <0.1%
Quarters held: 3; Since Q4 2025

Holdings of AMTM by Summit Trail Advisors, LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	20,229	$418.1K	<0.1%	+6,267+44.9%	Added	Holders
Q1 2026	13,962	$364.1K	<0.1%	+6,518+87.6%	Added	Holders
Q4 2025	7,444	$215.9K	<0.1%	+7,444	New	Holders