PRLB
Proto Labs, Inc. · Industrials · Manufacturing - Miscellaneous
Momentum inputs (comparable managers):
holder breadth +7.7% ·
share flow +3.6% ·
net new positions +7.1%
— formula
Broad accumulation — rising shares across more holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 99 | -1 | 14.61M | $1.19B | +4 | −5 |
| Q1 2026 | 103 | +16 | 13.93M | $794.05M | +17 | −1 |
| Q4 2025 | 87 | 0 | 14.72M | $745.02M | +1 | −1 |
| Q3 2025 | 18 | 0 | 10.50M | $525.51M | — | — |
| Q2 2025 | 15 | 0 | 10.12M | $405.31M | +1 | −1 |
| Q1 2025 | 12 | -2 | 4.14M | $145.11M | — | −2 |
| Q4 2024 | 14 | +1 | 3.70M | $144.79M | +1 | — |
| Q3 2024 | 12 | -2 | 2.43M | $71.29M | — | −2 |
| Q2 2024 | 14 | — | 2.60M | $80.36M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | State Street Global Advisors ✦ (passive) | 1.15M | — | $44.92M | 0.0% | n/c | 1 | SEC ↗ |
| 2 | Renaissance Technologies ✦ | 571.85K | +2.7% | $22.35M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 570.06K | -2.7% | $22.29M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 570.06K | -2.7% | $22.29M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 5 | D. E. Shaw & Co. ✦ | 500.70K | -4.4% | $19.57M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 6 | Wellington Management ✦ | 360.64K | -7.0% | $14.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 7 | Wellington Management ✦ | 360.64K | -7.0% | $14.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 8 | Wellington Management ✦ | 360.64K | -7.0% | $14.10M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 9 | Arrowstreet Capital ✦ | 212.91K | +348.1% | $8.32M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 10 | ARK Investment Management ✦ | 128.51K | +3.8% | $5.02M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | AQR Capital Management ✦ | 61.83K | +21.7% | $2.42M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | AQR Capital Management ✦ | 61.83K | +21.7% | $2.42M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 61.83K | +21.7% | $2.42M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 61.83K | +21.7% | $2.42M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 15 | Norges Bank ✦ (passive) | 49.80K | New | $1.95M | 0.0% | New | 1 | SEC ↗ |
| 16 | Millennium Management ✦ | 31.01K | -28.9% | $1.21M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 17 | T. Rowe Price ✦ | 24.49K | -15.7% | $958,000 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 18 | Citadel Advisors ✦ | 14.99K | -49.2% | $585,920 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 19 | Two Sigma Investments ✦ | 14.97K | -56.0% | $585,216 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 20 | Gotham Asset Management ✦ | 12.95K | -13.6% | $506,176 | 0.0% | ▼ Trim | 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 | $1.95M | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 259 holders, 21.98M shares, $1.24B 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.