§ REAL ESTATE
USD · Real Estate

IRM

IRON MOUNTAIN INC
USDSector · Real EstateMarket cap · $30.6BBeta · 1.16
LAST · MARKET CLOSE · OCT 05
113.48
+0.09 ▲ 0.08%PREV CLOSE · $113.39
§ 01 · PRICE
Price action
1D5D1M6MYTD1YMAX
OPEN 113.32HIGH 114.13LOW 112.0552W 72.33 — 115.24
EVENTSSEP 02 · KM SELLJUN 30 · EARNINGS +6.4%

§ 03 · SIGNAL STACK · WHAT THE INPUTS SAY

13F FLOW
607 increased/new, 388 decreased/exited (13F)
AC 13F Analysis
INSIDER
−$1M
3 txns · 90d

§ 04 · FUNDAMENTALS · THE BOOKS

P/E211.4P/B96.54
EPS (TTM)0.48Dividend3.52%
§ 05 · WHO OWNS IT
Top institutional holders
All holders →
FundShares% portΔ Q/Q
BlackRock, Inc.33.0M0.1%+0%
VANGUARD PORTFOLIO MANAGEMENT LLC25.0Mn/an/a
VANGUARD CAPITAL MANAGEMENT LLC18.8Mn/an/a
State Street17.6M0.1%+4%
Geode Capital Management8.5M0.1%+2%
Fidelity Management7.5M0.0%−6%
◇ AC INTELLIGENCE

Top institutional owners for IRM as of the most recent 13F reporting period (Q1 2026 · Period ended Mar 31). Δ Q/Q reflects share-count change vs. the prior filing — positive green means adding, negative red means trimming. Cross-reference with the ownership-mix bars below to see which strategy cohort is driving the flow.

§ 06 · WHO OWNS IT · BY STRATEGY

OTHER6.9% · 0 holders
OTHER43.0% · 892 holders
PASSIVE / INDEX18.1% · 14 holders
DEALER / BANK16.1% · 79 holders
QUALITY / COMPOUNDER10.6% · 36 holders
INCOME / DEFENSIVE4.5% · 46 holders
TACTICAL / MACRO0.6% · 7 holders
SYSTEMATIC / QUANT0.2% · 12 holders
ACTIVIST0.0% · 1 holder
GROWTH / MOMENTUM0.0% · 1 holder
◇ AC INTELLIGENCE

Ownership mix by behavioral cohort. Top bars indicate which style of capital dominates the float — passive indexing, quality compounders, dealer/bank, systematic quant, etc. Big quality-compounder share means concentrated active conviction; heavy passive share means flows are dictated by index rebalances, not fundamentals.

§ 07 · INSIDER ACTIVITY · LAST 180 DAYS

DateInsiderActionShares$ value
SEP 02Kidd MarkSELL6K−$694K
SEP 02McIntosh Greg WSELL5K−$578K
SEP 02Meaney William LSELL89−$10K
JUL 02Kidd MarkSELL6K−$754K
JUL 02Meaney William LSELL3K−$318K
JUN 02Kidd MarkSELL6K−$760K
◇ AC INTELLIGENCE

0 insider buys, 12 sells in the last 180 days. Scheduled 10b5-1 sales are pre-programmed and neutral; discretionary clusters are the tape worth reading. Cross-reference with the signal stack above for context.

§ 08 · COVERAGE · OUR RECENT NOTES