J.M. Arbour, LLC

SEC CIK: 0002099154
Latest filing: Aug 14, 2026

SEC filings (opens in a new tab)

IRM holding history

Iron Mountain Inc in every 13F filed by J.M. Arbour, LLC, including the quarters it was sold out or no filing was made. Changes compare share counts with the previous calendar quarter.

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

Shares (Q2 2026): 11,707
Value: $1.48M
% of portfolio: 1.3%
Quarters held: 3; Since Q4 2025

Holdings of IRM by J.M. Arbour, LLC, by quarter
Quarter	Shares	Value	% of portfolio	Share change	Action	All holders
Q2 2026	11,707	$1.48M	1.3%	+1,106+10.4%	Added	Holders
Q1 2026	10,601	$1.08M	1.0%	−259−2.4%	Reduced	Holders
Q4 2025	10,860	$900.9K	0.9%	–	No prior filing	Holders