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/PURR/capital-change-brief"
Use Arkolith's capital_change_brief for PURR. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | D1 Capital Partners L.P. | $40.7M | 8.0M | —Held | Q1 2026 | |
| 2 | Paradigm Operations LP | $29.1M | 5.7M | —Held | Q1 2026 | |
| 3 | STATE STREET CORP | $16.0M | 3.1M | ▲New +3.1M sh | Q1 2026 | |
| 4 | Pantera Capital Partners LP | $13.8M | 2.7M | ▼−34% Reduced · −1.4M sh | Q1 2026 | |
| 5 | BlackRock, Inc. | $10.6M | 2.1M | ▲474× Added · +2.1M sh | Q1 2026 | |
| 6 | OLP CAPITAL MANAGEMENT Ltd | $10.5M | 2.1M | ▲New +2.1M sh | Q1 2026 | |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $7.5M | 1.5M | ▲18× Added · +1.4M sh | Q1 2026 | |
| 8 | PEAK6 LLC | $7.1M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 9 | VANGUARD CAPITAL MANAGEMENT LLC | $7.1M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 10 | CITADEL ADVISORS LLC | $5.8M | 1.1M | ▲+378% Added · +905K sh | Q1 2026 | |
| 11 | MILLENNIUM MANAGEMENT LLC | $4.6M | 899K | ▲37× Added · +875K sh | Q1 2026 | |
| 12 | 683 Capital Management, LLC | $4.3M | 850K | ▼−47% Reduced · −740K sh | Q1 2026 | |
| 13 | GM Advisory Group, LLC | $4.2M | 828K | —Held | Q1 2026 | |
| 14 | VANGUARD FIDUCIARY TRUST CO | $3.3M | 658K | ▲New +658K sh | Q1 2026 | |
| 15 | GOLDMAN SACHS GROUP INC | $3.3M | 655K | ▲New +655K sh | Q1 2026 | |
| 16 | Militia Capital Management LLC | $3.3M | 653K | ▲New +653K sh | Q1 2026 | |
| 17 | MAPLELANE CAPITAL, LLC | $2.9M | 575K | ▲New +575K sh | Q1 2026 | |
| 18 | UBS Group AG | $2.8M | 552K | ▲36× Added · +537K sh | Q1 2026 | |
| 19 | MARSHALL WACE, LLP | $2.7M | 540K | ▲New +540K sh | Q1 2026 | |
| 20 | JANE STREET GROUP, LLC | $1.9M | 367K | ▲+285% Added · +271K sh | Q1 2026 | |
| 21 | XTX Topco Ltd | $1.7M | 335K | ▲25× Added · +322K sh | Q1 2026 | |
| 22 | ARISTEIA CAPITAL, L.L.C. | $1.7M | 325K | ▲+88% Added · +152K sh | Q1 2026 | |
| 23 | Kultura Capital Management LP | $1.6M | 305K | ▲New +305K sh | Q1 2026 | |
| 24 | NORTHERN TRUST CORP | $1.4M | 266K | ▲New +266K sh | Q1 2026 | |
| 25 | BANK OF AMERICA CORP /DE/ | $1.2M | 238K | ▲+896% Added · +214K 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 |
|---|---|---|---|---|---|
| Jul 1, 2026 | Bhatt Nailesh | Director | Grant (A) | 2K | — |
| Jul 1, 2026 | KING THOMAS C. | Director | Grant (A) | 5K | — |
| Jul 1, 2026 | Rosengren Eric S | Director | Grant (A) | 5K | — |
| Jul 1, 2026 | LEIBOWITZ LAWRENCE E | Director | Grant (A) | 2K | — |
| Jun 23, 2026 | Nieuwkoop Jeroen | Chief Operating Officer | Grant (A) | 422K | $0 |
| May 5, 2026 | Beldner Brett Douglas | CFO | Grant (A) | 422K | $0 |
| Apr 1, 2026 | Rosengren Eric S | Director | Grant (A) | 7K | $0 |
| Apr 1, 2026 | KING THOMAS C. | Director | Grant (A) | 7K | $0 |
| Apr 1, 2026 | LEIBOWITZ LAWRENCE E | Director | Grant (A) | 3K | $0 |
| Apr 1, 2026 | Bhatt Nailesh | Director | Grant (A) | 2K | $0 |
| Feb 9, 2026 | LEIBOWITZ LAWRENCE E | Director | Grant (A) | 41K | $0 |
| Feb 9, 2026 | KING THOMAS C. | Director | Grant (A) | 41K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| ALPHABET INC-CL AGOOGL | 24 funds | $3.3B |
| TAIWAN SEMICONDUCTOR-SP ADRTSM | 24 funds | $2.7B |
| AMAZON.COM INCAMZN | 23 funds | $6.3B |
| BROADCOM INCAVGO | 23 funds | $5.2B |
| META PLATFORMS INC-CLASS AMETA | 23 funds | $2.8B |
| NVIDIA CORPNVDA | 22 funds | $12.5B |
| ELI LILLY & COLLY | 22 funds | $2.0B |
| UNITEDHEALTH GROUP INCUNH | 22 funds | $1.1B |
| MERCADOLIBRE INCMELI | 22 funds | $942.0M |
| ASML HOLDING NV-NY REG SHSASML | 22 funds | $795.3M |
| UBER TECHNOLOGIES INCUBER | 22 funds | $587.1M |
| MICROSOFT CORPMSFT | 21 funds | $5.7B |
Ranked by how many of PURR'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 PURR. 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.