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/GRBK/capital-change-brief"
Use Arkolith's capital_change_brief for GRBK. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | GREENLIGHT CAPITAL INC | $592.4M | 11.4M | ▼−7.6% Reduced · −938K sh | Q4 2023 | |
| 2 | DME Capital Management, LP | $610.2M | 9.5M | —Held | Q1 2026 | |
| 3 | BlackRock, Inc. | $313.4M | 4.9M | ▲+0.2% Added · +9K sh | Q1 2026 | |
| 4 | DIMENSIONAL FUND ADVISORS LP | $113.5M | 1.8M | ▲+6.3% Added · +105K sh | Q1 2026 | |
| 5 | FMR LLC | $106.8M | 1.7M | ▲+3.2% Added · +52K sh | Q1 2026 | |
| 6 | STATE STREET CORP | $94.1M | 1.5M | ▼−3.3% Reduced · −50K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $87.9M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 8 | GEODE CAPITAL MANAGEMENT, LLC | $48.4M | 751K | ▲+4.0% Added · +29K sh | Q1 2026 | |
| 9 | SALEM INVESTMENT COUNSELORS INC | $51.5M | 643K | ▲+0.2% Added · +1K sh | Q2 2026 | |
| 10 | VANGUARD PORTFOLIO MANAGEMENT LLC | $38.6M | 599K | ▲New +599K sh | Q1 2026 | |
| 11 | PRICE T ROWE ASSOCIATES INC /MD/ | $37.8M | 587K | ▲+1.1% Added · +6K sh | Q1 2026 | |
| 12 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $30.2M | 469K | ▲+3.5% Added · +16K sh | Q1 2026 | |
| 13 | Annex Advisory Services, LLC | $35.0M | 437K | ▼−20% Reduced · −113K sh | Q2 2026 | |
| 14 | Boston Partners | $24.7M | 385K | ▲+16% Added · +53K sh | Q1 2026 | |
| 15 | PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | $23.1M | 358K | ▲+1.7% Added · +6K sh | Q1 2026 | |
| 16 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | $22.2M | 345K | ▼−28% Reduced · −137K sh | Q1 2026 | |
| 17 | NORTHERN TRUST CORP | $21.7M | 336K | ▲+2.6% Added · +8K sh | Q1 2026 | |
| 18 | GOLDMAN SACHS GROUP INC | $18.8M | 292K | ▲+61% Added · +111K sh | Q1 2026 | |
| 19 | MORGAN STANLEY | $15.1M | 235K | ▼−11% Reduced · −28K sh | Q1 2026 | |
| 20 | National Philanthropic Trust | $14.9M | 232K | —Held | Q1 2026 | |
| 21 | JPMORGAN CHASE & CO | $12.9M | 206K | ▼−14% Reduced · −33K sh | Q1 2026 | |
| 22 | KENNEDY CAPITAL MANAGEMENT LLC | $13.2M | 204K | ▼−18% Reduced · −44K sh | Q1 2026 | |
| 23 | VANGUARD FIDUCIARY TRUST CO | $13.1M | 203K | ▲New +203K sh | Q1 2026 | |
| 24 | Bank of New York Mellon Corp | $13.0M | 201K | ▼−2.8% Reduced · −6K sh | Q1 2026 | |
| 25 | FRANKLIN RESOURCES INC | $11.0M | 171K | ▲New +171K 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 15, 2026 | PARK ERIC JOHN | Chief Accounting Officer | Grant (A) | 1K | $0 |
| Jun 9, 2026 | Press Richard S | Director | Sell (S) | 2K | $141K |
| Jun 9, 2026 | Press Richard S | Director | Sell (S) | 3K | $212K |
| Mar 26, 2026 | Suit Neal J | General Counsel & EVP | Grant (A) | 4K | $0 |
| Mar 26, 2026 | Suit Neal J | General Counsel & EVP | Grant (A) | 4K | $0 |
| Mar 26, 2026 | Suit Neal J | General Counsel & EVP | Grant (A) | 4K | $0 |
| Mar 26, 2026 | Dolson Jed | President and COO | Grant (A) | 13K | $0 |
| Mar 26, 2026 | Dolson Jed | President and COO | Grant (A) | 13K | $0 |
| Mar 26, 2026 | Dolson Jed | President and COO | Grant (A) | 13K | $0 |
| Mar 26, 2026 | COX JEFFERY DEAN | CFO | Grant (A) | 3K | $0 |
| Mar 26, 2026 | COX JEFFERY DEAN | CFO | Grant (A) | 3K | $0 |
| Mar 26, 2026 | COX JEFFERY DEAN | CFO | Grant (A) | 3K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 99 funds | $42.6B |
| AMAZON.COM INCAMZN | 96 funds | $30.1B |
| ALPHABET INC-CL AGOOGL | 96 funds | $27.0B |
| APPLE INCAAPL | 95 funds | $49.1B |
| JPMORGAN CHASE & COJPM | 95 funds | $13.9B |
| BROADCOM INCAVGO | 94 funds | $22.7B |
| META PLATFORMS INC-CLASS AMETA | 94 funds | $17.2B |
| BERKSHIRE HATHAWAY INC-CL BBRK/B | 94 funds | $10.9B |
| VISA INC-CLASS A SHARESV | 94 funds | $9.8B |
| MASTERCARD INC - AMA | 94 funds | $7.5B |
| NVIDIA CORPNVDA | 93 funds | $58.2B |
| ELI LILLY & COLLY | 93 funds | $10.6B |
Ranked by how many of GRBK'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 GRBK. 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.