Stocktoria
Proto Labs Inc PRLB
Proto Labs Inc institutional holders
| Investor | Shares | Value | % of company |
|---|---|---|---|
| BlackRock Finance, Inc. | 4,322,679 | $133.5M | 17.83% |
| RENAISSANCE TECHNOLOGIES LLC | 520,251 | $29.7M | 2.15% |
| D. E. Shaw & Co., Inc. | 225,651 | $12.9M | 0.93% |
| AQR CAPITAL MANAGEMENT LLC | 55,117 | $3.1M | 0.23% |
| CITADEL ADVISORS LLC | 54,618 | $3.1M | 0.23% |
| ARK Investment Management LLC | 45,704 | $2.6M | 0.19% |
| Point72 Asset Management, L.P. | 32,389 | $1.8M | 0.13% |
| MILLENNIUM MANAGEMENT LLC | 25,829 | $1.5M | 0.11% |
% of company = reported institutional shares ÷ shares outstanding. Based on the latest reports; not every holder reports every quarter.
Computed from company filings · US · as of 2025-12-31. Facts plus Stocktoria's own computed scores — not investment advice.