This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/PRLB/capital-change-brief"
Use Arkolith's capital_change_brief for PRLB. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | $209.7M | 3.7M | ▲+1.6% Added · +59K sh | Q1 2026 | |
| 2 | DISCIPLINED GROWTH INVESTORS INC /MN | $142.4M | 2.5M | ▼−6.6% Reduced · −176K sh | Q1 2026 | |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | $87.7M | 1.5M | ▲New +1.5M sh | Q1 2026 | |
| 4 | DIMENSIONAL FUND ADVISORS LP | $72.5M | 1.3M | ▼−0.3% Reduced · −4K sh | Q1 2026 | |
| 5 | STATE STREET CORP | $62.3M | 1.1M | ▲+0.3% Added · +4K sh | Q1 2026 | |
| 6 | VANGUARD CAPITAL MANAGEMENT LLC | $59.3M | 1.0M | ▲New +1.0M sh | Q1 2026 | |
| 7 | AMERICAN CAPITAL MANAGEMENT INC | $35.8M | 628K | ▼−0.6% Reduced · −4K sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $33.1M | 580K | ▲+3.9% Added · +22K sh | Q1 2026 | |
| 9 | RENAISSANCE TECHNOLOGIES LLC | $29.7M | 520K | ▲+5.4% Added · +27K sh | Q1 2026 | |
| 10 | Rubric Capital Management LP | $27.7M | 486K | ▼−57% Reduced · −637K sh | Q1 2026 | |
| 11 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | $26.4M | 464K | ▲+0.7% Added · +3K sh | Q1 2026 | |
| 12 | FMR LLC | $24.1M | 422K | ▲+246% Added · +300K sh | Q1 2026 | |
| 13 | PRUDENTIAL FINANCIAL INC | $22.8M | 400K | ▲+119% Added · +217K sh | Q1 2026 | |
| 14 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $20.5M | 360K | ▼−0.8% Reduced · −3K sh | Q1 2026 | |
| 15 | Nuveen, LLC | $18.1M | 317K | ▼−2.7% Reduced · −9K sh | Q1 2026 | |
| 16 | S SQUARED TECHNOLOGY, LLC | $16.9M | 296K | ▼−3.3% Reduced · −10K sh | Q1 2026 | |
| 17 | MORGAN STANLEY | $16.7M | 294K | ▼−3.9% Reduced · −12K sh | Q1 2026 | |
| 18 | NORTHERN TRUST CORP | $15.2M | 267K | ▲+4.2% Added · +11K sh | Q1 2026 | |
| 19 | D. E. Shaw & Co., Inc. | $12.9M | 226K | ▲+6.0% Added · +13K sh | Q1 2026 | |
| 20 | NORDEA INVESTMENT MANAGEMENT AB | $12.0M | 214K | ▼−4.5% Reduced · −10K sh | Q1 2026 | |
| 21 | PANAGORA ASSET MANAGEMENT INC | $10.0M | 175K | ▼−0.5% Reduced · −887 sh | Q1 2026 | |
| 22 | Hillsdale Investment Management Inc. | $9.9M | 174K | ▲+3.6% Added · +6K sh | Q1 2026 | |
| 23 | UBS Group AG | $9.6M | 169K | ▼−3.8% Reduced · −7K sh | Q1 2026 | |
| 24 | VANGUARD FIDUCIARY TRUST CO | $8.8M | 154K | ▲New +154K sh | Q1 2026 | |
| 25 | Qube Research & Technologies Ltd | $8.5M | 149K | ▲+894% Added · +134K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Jun 2, 2026 | WEHRWEIN SVEN | Director | Sell (S) | 2K | $115K |
| Jun 2, 2026 | WEHRWEIN SVEN | Director | Sell (S) | 500 | $39K |
| May 23, 2026 | Krishna Suresh | President and CEO, Director | Tax withholding (F) | 1K | $89K |
| May 20, 2026 | Schumacher Daniel | Chief Financial Officer | Tax withholding (F) | 255 | $18K |
| May 20, 2026 | Parlange Bernardo | Chief Commercial Officer | Grant (A) | 2K | $0 |
| May 20, 2026 | Parlange Bernardo | Chief Commercial Officer | Grant (A) | 4K | $0 |
| May 19, 2026 | Black Archie C. | Director | Grant (A) | 2K | $0 |
| May 19, 2026 | Chin Moonhie | Director | Grant (A) | 2K | $0 |
| May 19, 2026 | Chand Sujeet | Director | Grant (A) | 2K | $0 |
| May 19, 2026 | Gawlick Rainer | Director | Grant (A) | 2K | $0 |
| May 19, 2026 | KRANTZ DONALD G | Director | Grant (A) | 2K | $0 |
| May 19, 2026 | WEHRWEIN SVEN | Director | Grant (A) | 2K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 75 funds | $30.7B |
| AMAZON.COM INCAMZN | 73 funds | $24.0B |
| APPLE INCAAPL | 72 funds | $36.0B |
| BROADCOM INCAVGO | 72 funds | $17.9B |
| META PLATFORMS INC-CLASS AMETA | 72 funds | $15.0B |
| NVIDIA CORPNVDA | 71 funds | $46.8B |
| TESLA INCTSLA | 71 funds | $10.0B |
| ELI LILLY & COLLY | 71 funds | $8.8B |
| PALANTIR TECHNOLOGIES INC-APLTR | 71 funds | $4.1B |
| VISA INC-CLASS A SHARESV | 70 funds | $7.0B |
| UNITEDHEALTH GROUP INCUNH | 70 funds | $3.0B |
| INTUIT INCINTU | 70 funds | $1.6B |
Ranked by how many of PRLB's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for PRLB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.