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/GTLB/capital-change-brief"
Use Arkolith's capital_change_brief for GTLB. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | VANGUARD PORTFOLIO MANAGEMENT LLC | $187.8M | 8.7M | ▲New +8.7M sh | Q1 2026 | |
| 2 | AQR CAPITAL MANAGEMENT LLC | $183.4M | 8.7M | ▲+60% Added · +3.2M sh | Q1 2026 | |
| 3 | BlackRock, Inc. | $186.9M | 8.6M | ▲+2.6% Added · +222K sh | Q1 2026 | |
| 4 | PRIMECAP MANAGEMENT CO/CA/ | $158.0M | 7.3M | ▲+530% Added · +6.1M sh | Q1 2026 | |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | $131.7M | 6.1M | ▲New +6.1M sh | Q1 2026 | |
| 6 | Impactive Capital LP | $84.7M | 3.9M | ▲New +3.9M sh | Q1 2026 | |
| 7 | MARSHALL WACE, LLP | $82.9M | 3.8M | ▲10× Added · +3.5M sh | Q1 2026 | |
| 8 | Champlain Investment Partners, LLC | $82.5M | 3.8M | ▼−6.8% Reduced · −279K sh | Q1 2026 | |
| 9 | Squarepoint Ops LLC | $79.7M | 3.7M | ▲+87% Added · +1.7M sh | Q1 2026 | |
| 10 | TWO SIGMA INVESTMENTS, LP | $70.7M | 3.3M | ▲21× Added · +3.1M sh | Q1 2026 | |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $61.7M | 2.9M | ▲+4.8% Added · +130K sh | Q1 2026 | |
| 12 | Alphabet Inc. | $59.0M | 2.7M | —Held | Q1 2026 | |
| 13 | FRANKLIN RESOURCES INC | $57.9M | 2.7M | ▼−17% Reduced · −559K sh | Q1 2026 | |
| 14 | HMI Capital Management, L.P. | $57.4M | 2.7M | ▼−38% Reduced · −1.6M sh | Q1 2026 | |
| 15 | STATE STREET CORP | $55.2M | 2.6M | ▲+4.2% Added · +102K sh | Q1 2026 | |
| 16 | FEDERATED HERMES, INC. | $53.7M | 2.5M | ▲158× Added · +2.5M sh | Q1 2026 | |
| 17 | INFINITUM ASSET MANAGEMENT, LLC | $48.7M | 2.3M | ▲+61% Added · +850K sh | Q1 2026 | |
| 18 | NORGES BANK | $81.4M | 2.2M | ▲+4.6% Added · +96K sh | Q4 2025 | |
| 19 | EDMOND DE ROTHSCHILD HOLDING S.A. | $45.1M | 2.1M | ▲+82% Added · +936K sh | Q1 2026 | |
| 20 | GOLDMAN SACHS GROUP INC | $44.7M | 2.1M | ▲+215% Added · +1.4M sh | Q1 2026 | |
| 21 | MORGAN STANLEY | $43.1M | 2.0M | ▲+49% Added · +651K sh | Q1 2026 | |
| 22 | BANK OF AMERICA CORP /DE/ | $42.3M | 2.0M | ▲+55% Added · +696K sh | Q1 2026 | |
| 23 | FIRST TRUST ADVISORS LP | $41.0M | 1.9M | ▲+20% Added · +312K sh | Q1 2026 | |
| 24 | Fiera Capital Corp | $37.9M | 1.8M | ▲+4.8% Added · +80K sh | Q1 2026 | |
| 25 | FIL Ltd | $36.2M | 1.7M | ▲+72% Added · +701K 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 30, 2026 | Staples William | Chief Executive Officer, Director | Buy (P) | 4K | $123K |
| Jun 22, 2026 | Mundy Simon | Chief Accounting Officer | Tax withholding (F) | 2K | $40K |
| Jun 17, 2026 | Staples William | Chief Executive Officer, Director | Tax withholding (F) | 26K | $748K |
| Jun 17, 2026 | Schulman Robin | Chief Legal Officer & Corp Sec | Tax withholding (F) | 8K | $214K |
| Jun 17, 2026 | Steward Ian | Chief Revenue Officer | Tax withholding (F) | 11K | $299K |
| Jun 17, 2026 | Mundy Simon | Chief Accounting Officer | Tax withholding (F) | 2K | $65K |
| Jun 17, 2026 | BLASING KAREN | Director | Grant (A) | 8K | $0 |
| Jun 17, 2026 | BOSTROM SUSAN L | Director | Grant (A) | 8K | $0 |
| Jun 17, 2026 | SULLIVAN GODFREY | Director | Grant (A) | 8K | $0 |
| Jun 17, 2026 | Bedi Sundeep | Director | Grant (A) | 8K | $0 |
| Jun 17, 2026 | HENSHALL DAVID J | Director | Grant (A) | 8K | $0 |
| Jun 15, 2026 | Mundy Simon | Chief Accounting Officer | Grant (A) | 55K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| MICROSOFT CORPMSFT | 138 funds | $54.9B |
| AMAZON.COM INCAMZN | 136 funds | $47.4B |
| NVIDIA CORPNVDA | 135 funds | $76.6B |
| BROADCOM INCAVGO | 135 funds | $27.8B |
| ALPHABET INC-CL AGOOGL | 133 funds | $39.7B |
| META PLATFORMS INC-CLASS AMETA | 133 funds | $25.3B |
| ELI LILLY & COLLY | 131 funds | $14.2B |
| MICRON TECHNOLOGY INCMU | 129 funds | $9.8B |
| ADVANCED MICRO DEVICESAMD | 129 funds | $7.0B |
| UNITEDHEALTH GROUP INCUNH | 129 funds | $6.5B |
| BOSTON SCIENTIFIC CORPBSX | 129 funds | $3.6B |
| SERVICENOW INCNOW | 129 funds | $3.5B |
Ranked by how many of GTLB'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 GTLB. 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.