Follow-The-Filings

Security

IRM

Iron Mtn Inc. Del · COM

Equity holders as of 2026 Q1 (each manager’s latest book)

17 owners 3 new 1 exit max 1.1% (Kentucky Trust Co.)

grid → activity →
owners 17
max % 1.1%
tracked value $6.9B
qoq N 3 A 3 R 8 E 1

holders

sorted by % of portfolio · long equity only · exits show last held size

manager % port activity shares value history
Kentucky Trust Co. 2026 Q2 stale 1.1% Reduce +0.05 pp 17,465 $2.2B hist
Ron Baron - Bamco Inc. /NY/ (Baron Capital) 2026 Q1 0.2% New 0.2% 525,270 $54M hist
Cliff Asness - Aqr Capital Management LLC 2026 Q1 0.1% Add +0.04 pp 1,846,073 $183M hist
Vanguard Group Inc. 2025 Q4 stale 0.1% Reduce -0.02 pp 46,627,483 $3.9B hist
Steve Cohen - Point72 Asset Management, L.P. 2026 Q1 0.1% Reduce -0.02 pp 377,618 $39M hist
Ancora Advisors LLC 2026 Q1 0.1% Reduce +0.01 pp 20,892 $2M hist
Norges Bank 2025 Q4 stale 0.0% Exit -0.04 pp 4,447,133 $369M hist
Two Sigma Investments, LP 2025 Q4 stale 0.0% Exit -0.03 pp 290,160 $24M hist
Israel Englander - Millennium Management LLC 2026 Q1 0.0% Reduce 0.00 pp 374,463 $38M hist
Natixis Advisors, LLC 2026 Q1 0.0% Add +0.01 pp 166,136 $17M hist
Dmitry Balyasny - Balyasny Asset Management L.P. 2026 Q1 0.0% Reduce 0.00 pp 128,692 $13M hist
Murray Stahl - Horizon Kinetics Asset Management LLC 2026 Q1 0.0% — 18,405 $2M hist
Ken Griffin - Citadel Advisors LLC 2026 Q1 0.0% Reduce -0.01 pp 374,954 $38M hist
Joel Greenblatt - Gotham Asset Management, LLC 2026 Q1 0.0% Add 0.00 pp 39,732 $4M hist
Ray Dalio - Bridgewater Associates, LP 2026 Q1 0.0% New 0.0% 4,694 $479 hist
Ken Fisher - Fisher Asset Management, LLC 2026 Q1 0.0% Reduce 0.00 pp 3,482 $356 hist
Renaissance Technologies LLC 2026 Q1 0.0% New 0.0% 2,400 $245 hist
D. E. Shaw & Co., Inc. exited 2026 Q1 last 2025 Q4 0.0% Exit 0.00 pp 5,756 $477 hist

17 current · 1 exited last period · options excluded

financials

US-GAAP annual · as tagged in Form 10-K · fiscal years · values link to the SEC filing

Income statement

Metric FY2023 FY2024 FY2025
Revenue $5.48B $6.15B $6.9B
Gross profit — — —
Gross margin — — —
Net income — — —
Net margin — — —

Balance sheet

Metric FY2023 FY2024 FY2025
Total current assets $1.74B $1.69B $1.93B
Total non-current assets * $15.74B $17.03B $19.19B
Total assets $17.47B $18.72B $21.13B
Total current liabilities $2.24B $3.09B $2.62B
Total non-current liabilities — — —
Total equity $211.65M -$503.12M -$981.01M

Cash flow

Metric FY2023 FY2024 FY2025
Cash from operations $1.11B $1.2B $1.34B
Cash from investing -$1.44B -$2.14B -$2.57B
Cash from financing $425.67M $876.74M $1.27B
Net change in cash $80.99M -$67.07M $2.82M

Source: SEC companyfacts (US-GAAP 10-K) · * = computed (not a single XBRL tag) · fiscal year as labeled by the issuer · not adjusted or audited by Follow-The-Filings

ownership over time

filing count by report period · click a bar for that quarter’s holders