AI summary pending
View Full Filing (SEC EDGAR)Iron Mountain Inc
$121.43+0.4%
+$6.8B
Net Activity
+24.34% total shares
Institutions Holding
1173
Popularity Rank
#366
Avg Weight
0.15%
Total Value
$33.8B
Market Cap
$36.2B
1173 institutions currently hold IRM, with 596 net buyers and 456 net sellers this quarter.
Institutional Moves (Q2 2026)
Neutral
Based on recent trading activity
Net Selling Institutions
456
Net Buying Institutions
596
Top 5 by Value
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Across its top 20 institutional holders, IRM's holder base skews toward low-concentration, low-turnover investors on average (avg. concentration score 5/100, avg. turnover score 39/100).
IRM ranks #366 out of 37501 tracked stocks by institutional interest — one of the most closely watched names in our coverage.
1173 institutions disclose a position in IRM, but none treat it as a major bet — even Contour Asset Management LLC, its most concentrated holder, allocates just 3.8% of its own portfolio to it.
BlackRock has added to its IRM position for two straight quarters, increasing it by $1.5B to reach $4.2B today.
Steve Cohen has trimmed its IRM position for two straight quarters, cutting it by $50.7M while still holding $15.6M.
IRM is up 0.4% today, and institutions have been net buyers of $6.8B this quarter — today's price move and the underlying institutional flow are pointing the same direction.
IRM posted net income of $434.5M over the trailing twelve months, and currently trades at a P/E of 83.2.
+$3.9B
Total Buy Value
$1.9B
Total Sell Value
596
Net Buyers
456
Net Sellers
IRM
Q2 2026
Top 5 Institutional Movers
IRM does not currently show a 13F-and-insider convergence signal — its insider confidence score is 0/100, below the threshold this product uses to flag combined buying pressure.
13F data as of 2026-06-30 quarterly filings. Note: many large institutions file close to the 45-day post-quarter deadline, so early-quarter flow figures can shift substantially as more filings arrive.
0
unique buyers
—
buy value
12-Month Buy/Sell Activity
| Action | Insider | Date | Value |
|---|---|---|---|
| Sell | Greg W Mcintosh | 2026-09-01 | $578K |
| Sell | Mark Kidd | 2026-09-01 | $694K |
| Sell | William L Meaney | 2026-09-01 | $1.29M |
| Sell | William L Meaney | 2026-09-01 | $2.39M |
| Sell | William L Meaney | 2026-09-01 | $702K |
| Sell | William L Meaney | 2026-09-01 | $10K |
| Sell | Mark Kidd | 2026-08-07 | $736K |
| Sell | William L Meaney | 2026-08-07 | $2.27M |
| Action | Member | Trade Date | Amount |
|---|---|---|---|
| Sell (Full) | Markwayne Mullin Senate | 2026-02-04 | $1K–$15K |
| Sell (Full) | Markwayne Mullin Senate | 2025-12-18 | $15K–$50K |
| Sell (Full) | Markwayne Mullin Senate | 2025-12-18 | $1K–$15K |
| Buy | Markwayne Mullin Senate | 2025-02-03 | $1K–$15K |
| Buy | Markwayne Mullin Senate | 2025-01-02 | $15K–$50K |
| Buy | Markwayne Mullin Senate | 2025-01-02 | $15K–$50K |
6
Filings (90d)
$13.13M
Total Est. Value
106K shares
Planned Shares
| Filer | Filing Date | Est. Value |
|---|---|---|
| McIntosh Greg W | 2026-09-01 | $578K |
| Kidd Mark | 2026-08-07 | $736K |
| Meaney William L | 2026-08-07 | $4.72M |
| McIntosh Greg W | 2026-08-06 | $1.51M |
| Meaney William L | 2026-07-01 | $4.83M |
| Kidd Mark | 2026-07-01 | $754K |
Form 144 is a planned sale notice, not an executed transaction. Form 144 Tracker。
No Schedule 13D/13G filings for this ticker
2
Filings (14d)
AI summary pending
View Full Filing (SEC EDGAR)AI summary pending
View Full Filing (SEC EDGAR)46284V101, 462846106
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47
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Insider lines up fourth 38,474-share sale at Iron Mountain (NYSE: IRM)
Price-Driven Insight from (IRM) for Rule-Based Strategy
Access IRM's institutional ownership data programmatically:
REST API
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