Security record · archived quarter
MIR
Mirion Technologies, Inc. · Industrials · Industrial - Machinery
115Tracked holders
+1Δ holders
179.63MShares held
$4.21BReported value
+4New positions
−2Exits
Momentum inputs (comparable managers):
holder breadth +0.9% ·
share flow +2.1% ·
net new positions +1.7%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 114 | -1 | 168.27M | $3.02B | +7 | −8 |
| Q1 2026 | 118 | +2 | 167.83M | $3.12B | +9 | −8 |
| Q4 2025 | 115 | +1 | 179.63M | $4.21B | +4 | −2 |
| Q3 2025 | 16 | -3 | 103.12M | $2.40B | — | −3 |
| Q2 2025 | 16 | +2 | 59.41M | $1.28B | +3 | −1 |
| Q1 2025 | 11 | -3 | 18.78M | $272.38M | +1 | −4 |
| Q4 2024 | 14 | +3 | 19.46M | $339.68M | +4 | −1 |
| Q3 2024 | 10 | +3 | 10.67M | $118.13M | +3 | — |
| Q2 2024 | 7 | — | 9.18M | $98.62M | — | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 38.20M | +4.9% | $894.64M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 30.35M | -0.2% | $710.71M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 30.35M | -0.2% | $710.71M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 30.35M | -0.2% | $710.71M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 30.35M | -0.2% | $710.71M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 20 | The Vanguard Group ✦ (passive) | 30.35M | -0.2% | $710.71M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 21 | State Street Global Advisors ✦ (passive) | 9.20M | +4.3% | $215.44M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 22 | Fidelity (FMR) ✦ | 8.41M | -7.3% | $197.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 23 | Fidelity (FMR) ✦ | 8.41M | -7.3% | $197.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 24 | Fidelity (FMR) ✦ | 8.41M | -7.3% | $197.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 25 | Fidelity (FMR) ✦ | 8.41M | -7.3% | $197.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 26 | Geode Capital Management ✦ (passive) | 5.79M | +2.8% | $135.55M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 27 | Geode Capital Management ✦ (passive) | 5.79M | +2.8% | $135.55M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 28 | Goldman Sachs Group ✦ | 5.25M | +3.8% | $122.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 29 | Goldman Sachs Group ✦ | 5.25M | +3.8% | $122.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 30 | Goldman Sachs Group ✦ | 5.25M | +3.8% | $122.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 31 | Goldman Sachs Group ✦ | 5.25M | +3.8% | $122.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 32 | Goldman Sachs Group ✦ | 5.25M | +3.8% | $122.92M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 33 | UBS Group AG | 4.85M | — | $113.65M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | UBS Group AG | 4.85M | — | $113.65M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | UBS Group AG | 4.85M | — | $113.65M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | UBS Group AG | 4.85M | — | $113.65M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Janus Henderson Group Plc | 4.60M | — | $107.66M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Janus Henderson Group Plc | 4.60M | — | $107.66M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Janus Henderson Group Plc | 4.60M | — | $107.66M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Dimensional Fund Advisors Lp | 4.10M | — | $96.09M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Dimensional Fund Advisors Lp | 4.10M | — | $96.09M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Dimensional Fund Advisors Lp | 4.10M | — | $96.09M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Dimensional Fund Advisors Lp | 4.10M | — | $96.09M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | Dimensional Fund Advisors Lp | 4.10M | — | $96.09M | 0.0% | n/c | 1 | SEC ↗ |
| 45 | Massachusetts Financial Services Co… | 3.66M | — | $85.80M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Massachusetts Financial Services Co… | 3.66M | — | $85.80M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Massachusetts Financial Services Co… | 3.66M | — | $85.80M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | Massachusetts Financial Services Co… | 3.66M | — | $85.80M | 0.0% | n/c | 1 | SEC ↗ |
| 49 | Massachusetts Financial Services Co… | 3.66M | — | $85.80M | 0.0% | n/c | 1 | SEC ↗ |
| 50 | Massachusetts Financial Services Co… | 3.66M | — | $85.80M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | Swedbank AB | 3.40M | — | $79.59M | 0.1% | n/c | 1 | SEC ↗ |
| 52 | Swedbank AB | 3.40M | — | $79.59M | 0.1% | n/c | 1 | SEC ↗ |
| 53 | Invesco Ltd. | 3.10M | — | $72.63M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | Invesco Ltd. | 3.10M | — | $72.63M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Invesco Ltd. | 3.10M | — | $72.63M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Invesco Ltd. | 3.10M | — | $72.63M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Invesco Ltd. | 3.10M | — | $72.63M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Invesco Ltd. | 3.10M | — | $72.63M | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 66 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 69 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Bank of New York Mellon Corp | 3.08M | — | $72.06M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Loomis Sayles & Co L P | 2.85M | — | $66.64M | 0.1% | n/c | 1 | SEC ↗ |
| 74 | Loomis Sayles & Co L P | 2.85M | — | $66.64M | 0.1% | n/c | 1 | SEC ↗ |
| 75 | American Century Companies Inc | 2.56M | — | $59.88M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Charles Schwab Investment… | 2.34M | — | $54.90M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Ameriprise Financial Inc | 2.34M | — | $54.72M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Ameriprise Financial Inc | 2.34M | — | $54.72M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Ameriprise Financial Inc | 2.34M | — | $54.72M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Ameriprise Financial Inc | 2.34M | — | $54.72M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Northern Trust Corp | 2.33M | — | $54.60M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Northern Trust Corp | 2.33M | — | $54.60M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Northern Trust Corp | 2.33M | — | $54.60M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Northern Trust Corp | 2.33M | — | $54.60M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Northern Trust Corp | 2.33M | — | $54.60M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Northern Trust Corp | 2.33M | — | $54.60M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Northern Trust Corp | 2.33M | — | $54.60M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Royal Bank Of Canada | 2.15M | — | $50.31M | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Royal Bank Of Canada | 2.15M | — | $50.31M | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Royal Bank Of Canada | 2.15M | — | $50.31M | 0.0% | n/c | 1 | SEC ↗ |
| 91 | Royal Bank Of Canada | 2.15M | — | $50.31M | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Royal Bank Of Canada | 2.15M | — | $50.31M | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Royal Bank Of Canada | 2.15M | — | $50.31M | 0.0% | n/c | 1 | SEC ↗ |
| 94 | Royal Bank Of Canada | 2.15M | — | $50.31M | 0.0% | n/c | 1 | SEC ↗ |
| 95 | Morgan Stanley ✦ | 2.10M | +59.6% | $49.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 96 | Morgan Stanley ✦ | 2.10M | +59.6% | $49.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 97 | Morgan Stanley ✦ | 2.10M | +59.6% | $49.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 98 | Morgan Stanley ✦ | 2.10M | +59.6% | $49.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 99 | Morgan Stanley ✦ | 2.10M | +59.6% | $49.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 100 | Morgan Stanley ✦ | 2.10M | +59.6% | $49.11M | 0.0% | ▲ Add | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Millennium Management | $12.12M | was 0.0% |
| Two Sigma Investments | $6.94M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 358 holders, 250.83M shares, $4.35B 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.
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: Q4 2025 ·
Methodology ·
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