Security record · archived quarter
MIR
Mirion Technologies, Inc. · Industrials · Industrial - Machinery
16Tracked holders
-3Δ holders
103.12MShares held
$2.40BReported value
+0New positions
−3Exits
Momentum inputs (comparable managers):
holder breadth -15.8% ·
share flow +30.0% ·
net new positions -18.8%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 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 · Q3 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 36.43M | +114.1% | $847.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | The Vanguard Group ✦ (passive) | 30.42M | +28.0% | $707.53M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 17 | The Vanguard Group ✦ (passive) | 30.42M | +28.0% | $707.53M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 18 | The Vanguard Group ✦ (passive) | 30.42M | +28.0% | $707.53M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | The Vanguard Group ✦ (passive) | 30.42M | +28.0% | $707.53M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 20 | The Vanguard Group ✦ (passive) | 30.42M | +28.0% | $707.53M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 21 | Fidelity (FMR) ✦ | 9.08M | +858.6% | $211.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 22 | Fidelity (FMR) ✦ | 9.08M | +858.6% | $211.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 23 | Fidelity (FMR) ✦ | 9.08M | +858.6% | $211.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 24 | Fidelity (FMR) ✦ | 9.08M | +858.6% | $211.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 25 | State Street Global Advisors ✦ (passive) | 8.82M | +73.1% | $205.07M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 26 | Geode Capital Management ✦ (passive) | 5.63M | +18.8% | $130.95M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 27 | Geode Capital Management ✦ (passive) | 5.63M | +18.8% | $130.95M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 28 | Goldman Sachs Group ✦ | 5.05M | — | $117.57M | 0.0% | n/c | 1 | SEC ↗ |
| 29 | Goldman Sachs Group ✦ | 5.05M | — | $117.57M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Goldman Sachs Group ✦ | 5.05M | — | $117.57M | 0.0% | n/c | 1 | SEC ↗ |
| 31 | Goldman Sachs Group ✦ | 5.05M | — | $117.57M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Goldman Sachs Group ✦ | 5.05M | — | $117.57M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Goldman Sachs Group ✦ | 5.05M | — | $117.57M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Arrowstreet Capital ✦ | 2.00M | -12.2% | $46.56M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 35 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 38 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 39 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 40 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 41 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 42 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 43 | Morgan Stanley ✦ | 1.31M | — | $30.56M | 0.0% | n/c | 1 | SEC ↗ |
| 44 | D. E. Shaw & Co. ✦ | 1.24M | +28.1% | $28.83M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 45 | D. E. Shaw & Co. ✦ | 1.24M | +28.1% | $28.83M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 46 | T. Rowe Price ✦ | 834.33K | +393.3% | $19.41M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 47 | T. Rowe Price ✦ | 834.33K | +393.3% | $19.41M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 48 | GAMCO Investors ✦ | 526.62K | -6.3% | $12.25M | 0.1% | ▼ Trim | 6 | SEC ↗ |
| 49 | Millennium Management ✦ | 521.02K | -81.9% | $12.12M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 50 | JPMorgan Chase ✦ | 476.68K | — | $11.09M | 0.0% | n/c | 1 | SEC ↗ |
| 51 | JPMorgan Chase ✦ | 476.68K | — | $11.09M | 0.0% | n/c | 1 | SEC ↗ |
| 52 | JPMorgan Chase ✦ | 476.68K | — | $11.09M | 0.0% | n/c | 1 | SEC ↗ |
| 53 | JPMorgan Chase ✦ | 476.68K | — | $11.09M | 0.0% | n/c | 1 | SEC ↗ |
| 54 | JPMorgan Chase ✦ | 476.68K | — | $11.09M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | JPMorgan Chase ✦ | 476.68K | — | $11.09M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Two Sigma Investments ✦ | 298.50K | +941.9% | $6.94M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 57 | AQR Capital Management ✦ | 292.34K | -6.4% | $6.80M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 58 | AQR Capital Management ✦ | 292.34K | -6.4% | $6.80M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 59 | AQR Capital Management ✦ | 292.34K | -6.4% | $6.80M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 60 | AQR Capital Management ✦ | 292.34K | -6.4% | $6.80M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 61 | AQR Capital Management ✦ | 292.34K | -6.4% | $6.80M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 62 | Citadel Advisors ✦ | 189.84K | -58.0% | $4.42M | 0.0% | ▼ Trim | 5 | 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
| Renaissance Technologies | $2.50M | was 0.0% |
| Soros Fund Management | $1.54M | was 0.0% |
| Gotham Asset Management | $292,873 | 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: Q3 2025 ·
Methodology ·
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