Proto Labs Inc PRLB
CIK 0001443669 · CUSIP 743713109
Quarter-end disclosures, not live holdings.
Top 20 institutions
Weight means this stock's share of the manager's own portfolio.
| # | Manager | Value | Manager weight | Change vs prior | Source | |
|---|---|---|---|---|---|---|
| 01 | BlackRock, Inc. CIK 2012383 · View history | $156.78M 4,010,702 shares | 0.00% | -5.24K(-0.10%)Reduced | SEC filing ↗ Feb 7, 2025 | ▾ |
| 02 | VANGUARD GROUP INC CIK 102909 · View history | $111.93M 2,863,376 shares | 0.00% | -70.42K(-2.40%)Reduced | SEC filing ↗ Feb 11, 2025 | ▾ |
| 03 | DISCIPLINED GROWTH INVESTORS INC /MN CIK 1050442 · View history | $84.97M 2,173,699 shares | 1.62% | +117.11K(+5.70%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 04 | DIMENSIONAL FUND ADVISORS LP CIK 354204 · View history | $50.85M 1,300,864 shares | 0.01% | +68.01K(+5.50%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 05 | STATE STREET CORP CIK 93751 · View history | $44.92M 1,149,020 shares | 0.00% | +183.59K(+19.00%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 06 | FIRST TRUST ADVISORS LP CIK 1125816 · View history | $28.87M 738,576 shares | 0.03% | +308.97K(+71.90%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 07 | RENAISSANCE TECHNOLOGIES LLC CIK 1037389 · View history | $22.35M 571,851 shares | 0.03% | +15.00K(+2.70%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 08 | GEODE CAPITAL MANAGEMENT, LLC CIK 1214717 · View history | $22.29M 570,057 shares | 0.00% | -15.75K(-2.70%)Reduced | SEC filing ↗ Feb 12, 2025 | ▾ |
| 09 | MORGAN STANLEY CIK 895421 · Amended · View history | $21.46M 549,083 shares | 0.00% | -105.98K(-16.20%)Reduced | SEC filing ↗ May 15, 2025 | ▾ |
| 10 | D. E. Shaw & Co., Inc. CIK 1009207 · View history | $19.57M 500,704 shares | 0.02% | -22.95K(-4.40%)Reduced | SEC filing ↗ Feb 14, 2025 | ▾ |
| 11 | WELLINGTON MANAGEMENT GROUP LLP CIK 902219 · Amended · View history | $14.10M 360,641 shares | 0.00% | -27.10K(-7.00%)Reduced | SEC filing ↗ Feb 12, 2025 | ▾ |
| 12 | HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC CIK 1164833 · View history | $12.71M 325,120 shares | 0.04% | +32.76K(+11.20%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 13 | S Squared Technology, LLC CIK 1322924 · View history | $12.00M 307,003 shares | 4.99% | +15.00K(+5.10%)Added | SEC filing ↗ Feb 13, 2025 | ▾ |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC CIK 884546 · View history | $11.31M 289,345 shares | 0.00% | -41.45K(-12.50%)Reduced | SEC filing ↗ Feb 6, 2025 | ▾ |
| 15 | NORTHERN TRUST CORP CIK 73124 · View history | $11.01M 281,639 shares | 0.00% | +9.31K(+3.40%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
| 16 | GOLDMAN SACHS GROUP INC CIK 886982 · View history | $9.79M 250,525 shares | 0.00% | -1.84K(-0.70%)Reduced | SEC filing ↗ Feb 11, 2025 | ▾ |
| 17 | NORDEA INVESTMENT MANAGEMENT AB CIK 1218210 · View history | $9.71M 244,987 shares | 0.01% | +105.81K(+76.00%)Added | SEC filing ↗ Jan 6, 2025 | ▾ |
| 18 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP CIK 1164508 · View history | $8.32M 212,914 shares | 0.01% | +165.40K(+348.10%)Added | SEC filing ↗ Feb 12, 2025 | ▾ |
| 19 | JUPITER ASSET MANAGEMENT LTD CIK 1215838 · View history | $7.35M 187,911 shares | 0.07% | +12.15K(+6.90%)Added | SEC filing ↗ Feb 10, 2025 | ▾ |
| 20 | UBS Group AG CIK 1610520 · View history | $7.09M 181,263 shares | 0.00% | +113.05K(+165.70%)Added | SEC filing ↗ Feb 14, 2025 | ▾ |
Showing 20 / 200 institutions. The complete set is available through the API.
Coverage & totals by quarter
Reporting institutions by quarter
Counts also change with data coverage and reporting entities; they do not measure net buying. Distinct managers with a live stock row in this CUSIP; totals may include overlapping filings and are not a share of the company.
Explore all 200 reporting institutions.
This page includes 20 of 200 reporting institutions. Log in to look up the full history beyond 3 years, use advanced screening & filtering, download CSV, and get the complete set through the Akkru API.
- Download CSV
- Earlier quarters
- Advanced screening & filtering
- API & AI access
＋ New accounts get free API credits to explore data beyond ownership filings.
For AI agents & developers
The initial HTML of this page carries its exact data as script#research-data (JSON): values, units, scope, preview limits and SEC sources. Read it directly, no script or API key needed; script#research-access says what needs an account. This page lists 20 of 200 reporting institutions; totals use the complete disclosed data.
Without an account: the last 3 years, with the row caps stated on the page. A free account opens all history on file on these pages and the CSV of what a page shows. Rows beyond the caps and bulk retrieval go through the authenticated API / MCP / CLI.
MCP https://api.akkrudata.ai/mcp
akkru_institutional_holdings
{"action":"holders","cusip":"743713109","quarter":"2024Q4","type":"positions","page_size":100}Connect to MCP with OAuth and follow the returned pagination. Credits and usage limits depend on the account.
- MCP endpoint
- https://api.akkrudata.ai/mcp
- API / MCP / CLI documentation
- /documents
- llms.txt
- /llms.txt
Sources, coverage & how to read this data
Figures are as reported to the SEC and merged with later amendments where Akkru could match them. Preview limits apply to what is listed, not to the totals, which come from the complete reported data. Nothing is zero-filled: a missing quarter or month is shown as missing.