BIO
Bio-Rad Laboratories, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -12.5% ·
share flow -8.5% ·
net new positions -14.3%
· formula
Broad distribution: falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2025
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q3 2026 | 3 | 0 | 194.30K | $73.36M | n/a | n/a |
| Q2 2026 | 117 | -3 | 14.28M | $4.19B | +7 | −9 |
| Q1 2026 | 122 | +9 | 14.35M | $4.00B | +14 | −6 |
| Q4 2025 | 113 | -3 | 13.80M | $4.16B | +1 | −3 |
| Q3 2025 | 20 | +2 | 5.24M | $1.47B | +2 | −1 |
| Q2 2025 | 16 | -1 | 5.26M | $1.27B | +1 | −2 |
| Q1 2025 | 14 | -2 | 1.87M | $455.90M | n/a | −2 |
| Q4 2024 | 16 | +1 | 2.05M | $672.31M | +1 | n/a |
| Q3 2024 | 14 | +2 | 1.60M | $536.26M | +3 | −1 |
| Q2 2024 | 12 | n/a | 1.03M | $281.62M | n/a | n/a |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 694.52K | +0.6% | $169.16M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 2 | Geode Capital Management ✦ (passive) | 342.94K | +6.5% | $83.35M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 3 | Millennium Management ✦ | 336.05K | -11.3% | $81.85M | 0.1% | ▼ Trim | 4 | SEC ↗ |
| 4 | Norges Bank ✦ (passive) | 156.71K | +23.6% | $38.17M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | Fisher Asset Management ✦ | 143.63K | +34.4% | $34.98M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | Point72 Asset Management ✦ | 34.60K | -86.0% | $8.43M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 7 | T. Rowe Price ✦ | 29.48K | +1.1% | $7.18M | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
| 8 | Gotham Asset Management ✦ | 28.47K | +29.7% | $6.93M | 0.1% | ▲ Add | 4 | SEC ↗ |
| 9 | Marshall Wace ✦ | 27.09K | +1088.9% | $6.60M | 0.0% | ▲ Add | 2 | SEC ↗ ×3 |
| 10 | GAMCO Investors ✦ | 26.75K | 0.0% | $6.52M | 0.1% | Held | 4 | SEC ↗ |
| 11 | D. E. Shaw & Co. ✦ | 18.93K | -23.1% | $4.61M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | AQR Capital Management ✦ | 18.58K | -36.8% | $4.43M | 0.0% | ▼ Trim | 4 | SEC ↗ ×5 |
| 13 | Citadel Advisors ✦ | 12.81K | +1382.8% | $3.12M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | Wellington Management ✦ | 2.36K | +191.2% | $574,558 | 0.0% | ▲ Add | 4 | SEC ↗ ×2 |
“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
| Arrowstreet Capital | $12.14M | was 0.0% |
| Two Sigma Investments | $673,446 | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 387 holders, 19.87M shares, $5.29B 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.