IRM

Iron Mountain Inc
Real EstateUSCUSIP 46284V101◍ Confluence graph
Tracked 13F Holders
1024
-208 QoQ
13F Value (tracked)
$23.9B
Insider Net · 180d
-$35.9M
0↑ 7↓
Recent Filings
15
Smart-money sentimentBearish
BearishBullish
13F funds (latest Q)18 adding · 23 trimming
Insider net (180d)-$35.9M

Who owns IRM?

1024 tracked 13F filers

1024 tracked 13F filers disclose a position in IRM as of the latest SEC 13F filings, a combined $23.9B in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

All quarters use one ordinary-share-equivalent series. Historical ADS are converted at 2 ADS = 1 ordinary share. Expand a row for the exact calculation; the residual is not classified as a trade.
3 source-reported value rows are withheld because the reported units do not agree with same-security peers. Share counts remain visible and unchanged.
#FundPosition valueSharesLast moveAs ofHistory
1BlackRock, Inc.
$3.4B
33.0M
+0.3%
Added · +102K sh
Q1 2026
2VANGUARD PORTFOLIO MANAGEMENT LLC
$2.6B
25.0M
First observed position
No prior filed position
Q1 2026
3VANGUARD CAPITAL MANAGEMENT LLC
$1.9B
18.8M
First observed position
No prior filed position
Q1 2026
4STATE STREET CORP
$2.2B
17.6M
+0.5%
Added · +82K sh
Q2 2026
5GEODE CAPITAL MANAGEMENT, LLC
$1.1B
8.6M
+1.9%
Added · +163K sh
Q2 2026
6FMR LLC
$764.5M
7.5M
−6.3%
Reduced · −500K sh
Q1 2026
7MORGAN STANLEY
$475.2M
4.7M
+29%
Added · +1.1M sh
Q1 2026
8PRINCIPAL FINANCIAL GROUP INC
$466.4M
4.6M
+8.5%
Added · +358K sh
Q1 2026
9DIMENSIONAL FUND ADVISORS LP
$464.9M
4.6M
+2.8%
Added · +123K sh
Q1 2026
10NORGES BANK
$368.9M
4.4M
+8.7%
Added · +358K sh
Q4 2025
11NORTHERN TRUST CORP
$423.9M
4.2M
−0.1%
Reduced · −2K sh
Q1 2026
12CHARLES SCHWAB INVESTMENT MANAGEMENT INC
$409.9M
4.0M
+3.4%
Added · +133K sh
Q1 2026
13Legal & General Group Plc
$320.2M
3.1M
−6.6%
Reduced · −221K sh
Q1 2026
14DEUTSCHE BANK AG\
$315.8M
3.1M
+22%
Added · +550K sh
Q1 2026
15PRUDENTIAL FINANCIAL INC
$246.8M
2.4M
+4.6%
Added · +106K sh
Q1 2026
16CENTERSQUARE INVESTMENT MANAGEMENT LLC
$293.5M
2.3M
+0.6%
Added · +14K sh
Q2 2026
17GOLDMAN SACHS GROUP INC
$226.4M
2.2M
+45%
Added · +691K sh
Q1 2026
18JPMORGAN CHASE & CO
$207.2M
2.1M
+10%
Added · +195K sh
Q1 2026
19Nuveen, LLC
$211.3M
2.1M
−2.8%
Reduced · −60K sh
Q1 2026
20Vontobel Holding Ltd.
$242.5M
1.9M
−9.3%
Reduced · −197K sh
Q2 2026
21Daiwa Securities Group Inc.
$235.1M
1.9M
−40%
Reduced · −1.2M sh
Q2 2026
22AMERIPRISE FINANCIAL INC
$189.1M
1.9M
+6.1%
Added · +107K sh
Q1 2026
23AQR CAPITAL MANAGEMENT LLC
$183.1M
1.8M
+100%
Added · +923K sh
Q1 2026
24VANGUARD FIDUCIARY TRUST CO
$168.8M
1.7M
First observed position
No prior filed position
Q1 2026
25Bank of New York Mellon Corp
$166.0M
1.6M
−3.6%
Reduced · −61K sh
Q1 2026

Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.

Is IRM being bought or sold by institutions?

Last quarter, 2 funds opened a new position in IRM and 16 added to an existing one, while 23 reduced and 0 exited entirely — based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).

Opened (NEW)
2
funds
Added
16
funds
Reduced
23
funds
Exited
0
funds

Funds that own IRM also own

CompanyCo-held byCombined value
NVIDIA CORPNVDA634 funds$460.6B
ALPHABET INC-CL AGOOGL629 funds$206.0B
MICROSOFT CORPMSFT627 funds$312.5B
AMAZON.COM INCAMZN626 funds$232.0B
APPLE INCAAPL624 funds$360.5B
JPMORGAN CHASE & COJPM614 funds$82.4B
META PLATFORMS INC-CLASS AMETA609 funds$132.9B
ELI LILLY & COLLY609 funds$92.7B
BROADCOM INCAVGO607 funds$177.6B
ALPHABET INC-CL CGOOG601 funds$144.1B
VISA INC-CLASS A SHARESV594 funds$75.5B
ABBVIE INCABBV594 funds$42.6B

Ranked by how many of IRM's institutional holders also hold each name, a cross-fund conviction signal.

Insider activity (Form 4)

Full insider page →
Buys · 180d
$0
0 insiders
Sells · 180d
$35.9M
7 insiders
Net
-$35.9M
31 P/S txns
Signal
Net Selling
open-market
DateInsiderRoleActionSharesValue
Aug 7, 2026Kidd MarkEVP, GM Data Centers & ALMSell (S)6K$736K
Aug 7, 2026Meaney William LPresident and CEO, DirectorSell (S)19K$2.3M
Aug 7, 2026Meaney William LPresident and CEO, DirectorSell (S)17K$2.0M
Aug 7, 2026Meaney William LPresident and CEO, DirectorSell (S)3K$357K
Aug 6, 2026McIntosh Greg WEVP, Chief Commercial OfficerSell (S)5K$636K
Aug 6, 2026McIntosh Greg WEVP, Chief Commercial OfficerSell (S)7K$869K
Jul 1, 2026Meaney William LPresident and CEO, DirectorSell (S)18K$2.1M
Jul 1, 2026Meaney William LPresident and CEO, DirectorSell (S)10K$1.2M
Jul 1, 2026Meaney William LPresident and CEO, DirectorSell (S)7K$888K
Jul 1, 2026Meaney William LPresident and CEO, DirectorSell (S)2K$200K
Jul 1, 2026Meaney William LPresident and CEO, DirectorSell (S)3K$318K
Jul 1, 2026Kidd MarkEVP, GM Data Centers & ALMSell (S)6K$754K

Institutional ownership over time

726 funds+0 since Q3 2024
0467934Q3 2024Q1 2025Q3 2025Q1 2026Q2 2026
funds holding aggregate valuelatest $6.0B · 2 values withheld

Share classes

Class13F holdersValue held
IRMthis pagecs1024 funds$23.9B
46284VAQ4Corporate Bond - Domestic1 funds$130K
46284VAJ0Corporate Bond - Domestic1 funds$116K
46284VAF8Corporate Bond - Domestic1 funds$112K
46284VAN1Corporate Bond - Domestic1 funds$90K
46284VAP6Corporate Bond - Domestic1 funds$87K
46284VAC5Corporate Bond - Domestic1 funds$85K
46284VAE1Corporate Bond - Domestic1 funds$75K

Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.

Recent filings

15 shown

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Ask your agent what changed in IRM

This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.

Copy-paste
curl -H "Authorization: Bearer YOUR_API_KEY" \
  "https://arkolith.com/api/v1/stocks/IRM/capital-change-brief"
Ask your agent
Use Arkolith's capital_change_brief for IRM.
Tell me what changed, whether insider activity
corroborates it, and cite the SEC evidence.

13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for IRM. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.