Skip to main content

GROUP ONE TRADING LLC

Position in IRM — Iron Mountain Inc

CIK 932540 CHICAGO, IL

Position in IRM

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$540,733
+$14,610 QoQ
Shares Held
4,281
-16.9% QoQ
Ownership
0.001%
of shares outstanding
% of Portfolio
0.02%
of 13F equity value
Holder Rank
#641
of 1,160 holders
Holding Since
Dec 2021
8 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in IRM Over Time

Shares Held

Position Value (USD)

Position in REIT - Specialty

Real Estate · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $22,047,976 across 11 REIT - Specialty names. IRM ranks #7 (2.5% of the industry book) .

# Ticker Company Shares Value (USD) Open
7 IRM
Iron Mountain Inc
This page
4,281 $540,733

All Filings in IRM

Export CSV
8 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $540,733 4,281
2026-03-31 $526,123 5,151
2025-12-31 $522,087 6,294
2025-09-30 $966,697 9,483
2025-06-30 $671,115 6,543
2023-12-31 $72,569 1,037
2022-03-31 $434,137 7,835
2021-12-31 $36,735 702