MIR
Mirion Technologies, Inc. · Industrials · Industrial - Machinery
Momentum inputs (comparable managers):
holder breadth +30.0% ·
share flow +16.2% ·
net new positions +20.0%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| 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 | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Geode Capital Management ✦ (passive) | 4.50M | +3.4% | $49.85M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 4.50M | +3.4% | $49.85M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 3 | Adage Capital Partners ✦ | 3.62M | +11.6% | $40.08M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 4 | Millennium Management ✦ | 1.55M | +190.2% | $17.14M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | GAMCO Investors ✦ | 634.77K | -13.7% | $7.03M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 6 | T. Rowe Price ✦ | 123.37K | +4.7% | $1.37M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 7 | Renaissance Technologies ✦ | 113.00K | -35.1% | $1.25M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 8 | Marshall Wace ✦ | 61.80K | New | $684,082 | 0.0% | New | 1 | SEC ↗ |
| 9 | Marshall Wace ✦ | 61.80K | New | $684,082 | 0.0% | New | 1 | SEC ↗ |
| 10 | Gotham Asset Management ✦ | 29.01K | +44.2% | $321,141 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 23.26K | New | $257,510 | 0.0% | New | 1 | SEC ↗ |
| 12 | Arrowstreet Capital ✦ | 14.03K | New | $155,279 | 0.0% | New | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Marshall Wace | $684,082 | 0.0% |
| Marshall Wace | $684,082 | 0.0% |
| Citadel Advisors | $257,510 | 0.0% |
| Arrowstreet Capital | $155,279 | 0.0% |
Exited
| No tracked exits this quarter. |
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.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.