Security record
IRM
Iron Mountain Incorporated · Real Estate · REIT - Specialty
159Tracked holders
0Δ holders
181.12MShares held
$22.88BReported value
+6New positions
−5Exits
Momentum inputs (comparable managers): holder breadth 0.0% · share flow +2.2% · net new positions +0.6% — formula
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q2 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 159 | 0 | 181.12M | $22.88B | +6 | −5 |
| Q1 2026 | 161 | +4 | 173.50M | $17.71B | +10 | −7 |
| Q4 2025 | 156 | +1 | 203.32M | $16.87B | +2 | — |
| Q3 2025 | 19 | 0 | 127.27M | $12.98B | — | −1 |
| Q2 2025 | 17 | -2 | 121.35M | $12.46B | — | −2 |
| Q1 2025 | 16 | 0 | 38.25M | $3.31B | +2 | −2 |
| Q4 2024 | 16 | +4 | 36.36M | $3.83B | +4 | — |
| Q3 2024 | 11 | +1 | 19.71M | $2.34B | +2 | −1 |
| Q2 2024 | 10 | — | 19.98M | $1.79B | — | — |
Who holds it · Q2 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 33.57M | +1.7% | $4.24B | 0.1% | ▲ Add | 5 | SEC ↗ ×20 |
| 2 | Vanguard Capital Management Llc | 18.95M | +1.0% | $2.39B | 0.1% | ▲ Add | 2 | SEC ↗ |
| 3 | State Street Global Advisors ✦ (passive) | 17.63M | +0.5% | $2.24B | 0.1% | ▲ Add | 7 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 8.65M | +1.9% | $1.09B | 0.1% | ▲ Add | 9 | SEC ↗ ×2 |
| 5 | Fidelity (FMR) ✦ | 7.87M | +5.2% | $994.36M | 0.0% | ▲ Add | 5 | SEC ↗ ×5 |
| 6 | Dimensional Fund Advisors Lp | 4.63M | +1.6% | $584.31M | 0.1% | ▲ Add | 3 | SEC ↗ ×5 |
| 7 | Morgan Stanley ✦ | 4.43M | -4.8% | $559.16M | 0.0% | ▼ Trim | 4 | SEC ↗ ×15 |
| 8 | Principal Financial Group Inc | 4.37M | -4.2% | $552.40M | 0.3% | ▼ Trim | 3 | SEC ↗ ×3 |
| 9 | Charles Schwab Investment… | 4.26M | +6.2% | $538.52M | 0.1% | ▲ Add | 3 | SEC ↗ ×2 |
| 10 | Northern Trust Corp | 4.22M | +1.8% | $533.40M | 0.1% | ▲ Add | 3 | SEC ↗ ×11 |
| 11 | Norges Bank ✦ (passive) | 4.21M | New | $532.36M | 0.1% | New | 1 | SEC ↗ |
| 12 | Invesco Ltd. | 4.07M | +3.7% | $513.53M | 0.0% | ▲ Add | 3 | SEC ↗ ×14 |
| 13 | Legal & General Group Plc | 3.24M | +3.5% | $409.84M | 0.1% | ▲ Add | 3 | SEC ↗ ×3 |
| 14 | UBS AM, a distinct business unit of… | 3.19M | +29674.0% | $403.38M | 0.1% | ▲ Add | 3 | SEC ↗ ×11 |
| 15 | Deutsche Bank Ag\ | 3.05M | -1.4% | $385.13M | 0.1% | ▼ Trim | 3 | SEC ↗ ×13 |
| 16 | Goldman Sachs Group ✦ | 2.82M | +27.3% | $356.54M | 0.0% | ▲ Add | 4 | SEC ↗ ×5 |
| 17 | JPMorgan Chase ✦ | 2.21M | +4.2% | $287.51M | 0.0% | ▲ Add | 4 | SEC ↗ ×16 |
| 18 | Nuveen, LLC | 2.22M | +7.3% | $280.25M | 0.1% | ▲ Add | 3 | SEC ↗ ×4 |
| 19 | AQR Capital Management ✦ | 2.13M | +15.2% | $266.50M | 0.1% | ▲ Add | 9 | SEC ↗ ×10 |
| 20 | Prudential Financial Inc | 1.97M | -18.3% | $249.35M | 0.3% | ▼ Trim | 3 | SEC ↗ ×3 |
| 21 | Daiwa Securities Group Inc. | 1.86M | -40.1% | $235.13M | 0.5% | ▼ Trim | 3 | SEC ↗ ×2 |
| 22 | Ameriprise Financial Inc | 1.67M | -9.9% | $210.90M | 0.0% | ▼ Trim | 3 | SEC ↗ ×7 |
| 23 | Royal Bank Of Canada | 1.64M | +16.3% | $207.21M | 0.0% | ▲ Add | 3 | SEC ↗ ×13 |
| 24 | Bank of New York Mellon Corp | 1.60M | -1.5% | $202.11M | 0.0% | ▼ Trim | 3 | SEC ↗ ×18 |
| 25 | Russell Investments Group, Ltd. | 1.40M | -3.5% | $177.42M | 0.2% | ▼ Trim | 3 | SEC ↗ ×13 |
| 26 | Hsbc Holdings Plc | 1.35M | +5.9% | $170.31M | 0.1% | ▲ Add | 3 | SEC ↗ ×7 |
| 27 | Capital World Investors ✦ | 1.22M | -34.8% | $153.74M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 28 | Amundi | 1.17M | +7.0% | $147.58M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 29 | American Century Companies Inc | 1.15M | +41.5% | $145.82M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 30 | Bank Of America Corp /De/ | 1.12M | -20.1% | $141.32M | 0.0% | ▼ Trim | 3 | SEC ↗ ×6 |
| 31 | Mitsubishi UFJ Asset Management… | 982.60K | +8.2% | $124.11M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 32 | UBS Group AG | 915.10K | +14.2% | $115.59M | 0.0% | ▲ Add | 3 | SEC ↗ ×5 |
| 33 | Sumitomo Mitsui Trust Group, Inc. | 896.56K | -4.0% | $113.24M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 34 | Swiss National Bank | 839.06K | -3.3% | $105.98M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 35 | Pictet Asset Management Holding SA | 817.62K | -5.5% | $103.33M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 36 | CIBC Bancorp USA Inc. | 777.48K | -6.2% | $98.24M | 0.1% | ▼ Trim | 2 | SEC ↗ ×3 |
| 37 | Barclays Plc | 743.34K | +10.3% | $93.89M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 38 | Sei Investments Co | 697.74K | -28.4% | $88.13M | 0.1% | ▼ Trim | 3 | SEC ↗ ×2 |
| 39 | Aberdeen Group plc | 691.51K | +86.3% | $87.35M | 0.1% | ▲ Add | 3 | SEC ↗ ×3 |
| 40 | Wells Fargo & Company/Mn | 662.16K | +0.6% | $83.64M | 0.0% | ▲ Add | 3 | SEC ↗ ×6 |
| 41 | Bnp Paribas Financial Markets | 648.23K | +27.5% | $81.88M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 42 | LPL Financial LLC | 640.38K | +3.1% | $80.89M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 43 | T. Rowe Price ✦ | 634.61K | +5.5% | $80.16M | 0.0% | ▲ Add | 9 | SEC ↗ ×2 |
| 44 | Universal- Beteiligungs- und… | 610.89K | +3.5% | $77.10M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 45 | Quantinno Capital Management LP | 590.65K | +83.4% | $74.60M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 46 | Nomura Asset Management Co Ltd | 588.38K | +4.5% | $74.32M | 0.2% | ▲ Add | 3 | SEC ↗ ×2 |
| 47 | Rhumbline Advisers | 573.27K | -0.9% | $72.41M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 48 | Raymond James Financial Inc | 561.54K | +90.3% | $70.93M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 49 | Asset Management One Co., Ltd. | 554.61K | +1.3% | $70.05M | 0.2% | ▲ Add | 3 | SEC ↗ |
| 50 | California Public Employees… | 553.87K | +10.2% | $69.96M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 51 | Nomura Asset Management… | 552.19K | -5.9% | $69.75M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 52 | Adage Capital Partners ✦ | 535.15K | -9.3% | $67.60M | 0.1% | ▼ Trim | 9 | SEC ↗ |
| 53 | Wellington Management ✦ | 512.91K | +47.4% | $64.79M | 0.0% | ▲ Add | 9 | SEC ↗ ×8 |
| 54 | Alliancebernstein L.P. | 562.71K | -0.5% | $57.48M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 55 | National Pension Service | 454.81K | +5.9% | $57.45M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 56 | Bank Of Montreal /Can/ | 453.71K | +11.8% | $57.31M | 0.0% | ▲ Add | 3 | SEC ↗ ×9 |
| 57 | Healthcare Of Ontario Pension Plan… | 443.90K | +106.6% | $56.07M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 58 | Citigroup Inc | 422.52K | +33.9% | $53.37M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 59 | Jane Street Group, Llc | 396.54K | -44.0% | $50.09M | 0.0% | ▼ Trim | 2 | SEC ↗ ×2 |
| 60 | Rockefeller Capital Management L.P. | 391.62K | +0.6% | $49.47M | 0.1% | ▲ Add | 3 | SEC ↗ ×5 |
| 61 | Citadel Advisors ✦ | 343.17K | -8.5% | $43.35M | 0.0% | ▼ Trim | 8 | SEC ↗ ×2 |
| 62 | Bamco Inc /Ny/ | 310.72K | -40.9% | $39.25M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 63 | Robeco Institutional Asset… | 297.90K | +1940.0% | $37.63M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 64 | Neuberger Berman Group LLC | 290.38K | -19.5% | $36.68M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 65 | Swedbank AB | 287.06K | +10.3% | $36.26M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 66 | Victory Capital Management Inc | 268.21K | +12.6% | $33.88M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 67 | Aviva Plc | 260.63K | -1.0% | $32.92M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 68 | Stifel Financial Corp | 259.64K | +1.7% | $32.80M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 69 | State Board Of Administration Of… | 257.57K | -1.9% | $32.53M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 70 | Cetera Investment Advisers | 257.10K | -1.1% | $32.47M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 71 | Federated Hermes, Inc. | 241.78K | +12.9% | $30.54M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 72 | Corient Private Wealth LP | 224.51K | +5.7% | $28.36M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 73 | Blair William & Co/Il | 224.38K | -0.4% | $28.34M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 74 | Korea Investment CORP | 218.59K | +82.1% | $27.61M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 75 | Focus Partners Wealth | 211.46K | +1.9% | $26.74M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 76 | Captrust Financial Advisors | 207.99K | -1.8% | $26.27M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 77 | Envestnet Asset Management Inc | 204.40K | -9.1% | $25.82M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 78 | Zurcher Kantonalbank (Zurich… | 202.40K | +1.8% | $25.57M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 79 | DZ BANK AG Deutsche Zentral… | 196.36K | -21.9% | $24.80M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 80 | National Bank Of Canada /Fi/ | 191.66K | +101.5% | $24.21M | 0.0% | ▲ Add | 3 | SEC ↗ ×4 |
| 81 | New York State Common Retirement… | 182.87K | -0.7% | $23.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 82 | Manufacturers Life Insurance… | 166.50K | -4.0% | $21.03M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 83 | Pacer Advisors, Inc. | 164.49K | -1.6% | $20.78M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 84 | Ensign Peak Advisors, Inc | 163.84K | -44.9% | $20.69M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 85 | Danske Bank A/S | 160.96K | -1.9% | $20.33M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 86 | State Of Wisconsin Investment Board | 158.44K | -10.2% | $20.01M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 87 | Commonwealth Equity Services, Llc | 157.86K | +0.8% | $19.94M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 88 | Millennium Management ✦ | 157.06K | -58.1% | $19.84M | 0.0% | ▼ Trim | 9 | SEC ↗ |
| 89 | Mariner, LLC | 146.99K | +13.9% | $18.57M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 90 | BNP Paribas Asset Management… | 144.89K | +13.2% | $18.30M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 91 | FIL Ltd | 144.81K | -3.9% | $18.29M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 92 | Chevy Chase Trust Holdings, LLC | 143.66K | -1.4% | $18.15M | 0.0% | ▼ Trim | 3 | SEC ↗ ×2 |
| 93 | Mitsubishi UFJ Trust & Banking Corp | 141.55K | +20.4% | $17.88M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 94 | Franklin Resources Inc | 141.31K | -4.5% | $17.85M | 0.0% | ▼ Trim | 3 | SEC ↗ ×8 |
| 95 | Royal London Asset Management Ltd | 141.10K | -1.1% | $17.82M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 96 | Creative Planning | 139.92K | +6.3% | $17.67M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 97 | Toronto Dominion Bank | 133.88K | +3.4% | $16.91M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 98 | Point72 Asset Management ✦ | 123.26K | -67.4% | $15.57M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 99 | Storebrand Asset Management As | 117.20K | -2.0% | $14.80M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 100 | First Trust Advisors Lp | 112.19K | +101.4% | $14.17M | 0.0% | ▲ Add | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Norges Bank | $532.36M | 0.1% |
Exited
| Qube Research & Technologies… | $8.32M | was 0.0% |
| Peak6 Llc | $6.17M | was 0.2% |
| Simplex Trading, Llc | $1.51M | was 0.0% |
| Bridgewater Associates | $479,445 | was 0.0% |
| Optiver Holding B.V. | $139,830 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 1,078 holders, 250.54M shares, $23.29B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
Frequently co-owned
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Sep 01
Meaney William L
Officer, Director · 89 sh · $10,324
Sep 01
Meaney William L
Officer, Director · 11.33K sh · $1.29M
Sep 01
Meaney William L
Officer, Director · 20.95K sh · $2.39M
Sep 01
Meaney William L
Officer, Director · 6.10K sh · $701,615
Sep 01
McIntosh Greg W
Officer · 5.00K sh · $578,000
Sep 01
Kidd Mark
Officer · 6.00K sh · $693,600
Aug 07
Meaney William L
Officer, Director · 18.78K sh · $2.27M
Aug 07
Meaney William L
Officer, Director · 16.79K sh · $2.05M
Aug 07
Meaney William L
Officer, Director · 2.91K sh · $357,080
Aug 07
Kidd Mark
Officer · 6.00K sh · $736,200
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q2 2026 ·
Methodology ·
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