# PROTO LABS INC COM

PROTO LABS INC COM is a security (CUSIP 743713109) tracked across SEC portfolio filings. 276 institutional managers reported $1.3B on Form 13F as of 2026-06-30; 21 registered fund positions totaling $40.7M via N-PORT as of 2026-05-31.

## Summary

- Issuer: PROTO LABS INC
- Class: COM
- CUSIP: 743713109
- Asset category: EC
- 13F holders: 276
- 13F value: $1.3B
- 13F period: 2026-06-30
- N-PORT fund positions: 21
- N-PORT value: $40.7M
- N-PORT report: 2026-05-31

## Top institutional holders (Form 13F)

_Showing 15 of 276 managers by value._

| Manager | Location | Value | Shares |
| --- | --- | --- | --- |
| BlackRock, Inc. | New York, NY | $209.7M | 3,677,875 |
| [DISCIPLINED GROWTH INVESTORS INC /MN](https://search.stillhousedata.com/firm/106746) | MINNEAPOLIS, MN | $142.4M | 2,497,355 |
| [VANGUARD GROUP INC](https://search.stillhousedata.com/firm/105958) | Valley Forge, PA | $134.9M | 2,666,227 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $72.5M | 1,272,356 |
| STATE STREET CORP | BOSTON, MA | $62.3M | 1,092,000 |
| AMERICAN CAPITAL MANAGEMENT INC | New York, NY | $35.8M | 627,705 |
| [GEODE CAPITAL MANAGEMENT, LLC](https://search.stillhousedata.com/firm/115504) | BOSTON, MA | $33.1M | 580,201 |
| [RENAISSANCE TECHNOLOGIES LLC](https://search.stillhousedata.com/firm/106661) | NEW YORK, NY | $29.7M | 520,251 |
| Rubric Capital Management LP | New York, NY | $27.7M | 486,400 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | BOSTON, MA | $26.4M | 463,780 |
| FMR LLC | BOSTON, MA | $24.1M | 422,356 |
| PRUDENTIAL FINANCIAL INC | NEWARK, NJ | $22.8M | 400,241 |
| Driehaus Capital Management LLC | Chicago, IL | $21.0M | 369,136 |
| [CHARLES SCHWAB INVESTMENT MANAGEMENT INC](https://search.stillhousedata.com/firm/106753) | SAN FRANCISCO, CA | $20.5M | 360,203 |
| Nuveen, LLC | CHARLOTTE, NC | $18.1M | 316,939 |

## Top fund holders (N-PORT)

_Showing 15 of 21 fund positions by value._

| Fund | Registrant | Value | % of fund |
| --- | --- | --- | --- |
| [VANGUARD EXTENDED MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002841) | VANGUARD INDEX FUNDS | $15.0M | 1.85% |
| [VANGUARD RUSSELL 2000 INDEX FUND](https://search.stillhousedata.com/fund/S000030003) | VANGUARD SCOTTSDALE FUNDS | $9.3M | 5.28% |
| [U.S. MICRO CAP PORTFOLIO](https://search.stillhousedata.com/fund/S000000948) | DFA INVESTMENT DIMENSIONS GROUP INC | $4.2M | 5.60% |
| [Master Small Cap Index Series](https://search.stillhousedata.com/fund/S000002716) | Quantitative Master Series LLC | $2.2M | 4.59% |
| Gabelli Dividend & Income Trust | Gabelli Dividend & Income Trust | $1.8M | 6.89% |
| [VANGUARD MARKET NEUTRAL FUND](https://search.stillhousedata.com/fund/S000019457) | VANGUARD MONTGOMERY FUNDS | $1.4M | 32.38% |
| [Goldman Sachs ActiveBeta(R) U.S. Small Cap Equity ETF](https://search.stillhousedata.com/fund/S000048296) | Goldman Sachs ETF Trust | $1.2M | 11.81% |
| Gabelli Equity Trust Inc | Gabelli Equity Trust Inc | $1.1M | 6.22% |
| [VANGUARD U.S. MOMENTUM FACTOR ETF](https://search.stillhousedata.com/fund/S000061302) | VANGUARD WELLINGTON FUND | $869K | 4.73% |
| [VANGUARD BALANCED INDEX FUND](https://search.stillhousedata.com/fund/S000002560) | VANGUARD VALLEY FORGE FUNDS | $779K | 0.13% |
| [BNY Mellon Smallcap Stock Index Fund](https://search.stillhousedata.com/fund/S000000132) | BNY MELLON INDEX FUNDS, INC. | $764K | 9.01% |
| [VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND](https://search.stillhousedata.com/fund/S000002855) | VANGUARD INSTITUTIONAL INDEX FUNDS | $600K | 0.20% |
| Weiss Strategic Interval Fund | Weiss Strategic Interval Fund | $548K | 10.63% |
| [CORNERCAP SMALL-CAP VALUE FUND](https://search.stillhousedata.com/fund/S000004377) | CORNERCAP GROUP OF FUNDS | $413K | 34.33% |
| [DWS Small Cap Index VIP](https://search.stillhousedata.com/fund/S000006223) | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $190K | 4.53% |

## More

- [This page as markdown (for LLM agents)](https://search.stillhousedata.com/security/743713109.md)
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Source: public SEC filing data via Adviser Search (https://search.stillhousedata.com).
Agents: this data is also queryable via MCP tools and read-only SQL — see https://search.stillhousedata.com/llms.txt.