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/TARS/capital-change-brief"
Use Arkolith's capital_change_brief for TARS. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Deep Track Capital, LP | $252.5M | 3.6M | ▲+20% Added · +596K sh | Q1 2026 | |
| 2 | BlackRock, Inc. | $249.2M | 3.6M | ▼−6.3% Reduced · −238K sh | Q1 2026 | |
| 3 | RTW INVESTMENTS, LP | $234.7M | 3.3M | ▲+0.3% Added · +11K sh | Q1 2026 | |
| 4 | Paradigm Biocapital Advisors LP | $179.7M | 2.6M | —Held | Q1 2026 | |
| 5 | JANUS HENDERSON GROUP PLC | $157.2M | 2.2M | ▲+16% Added · +311K sh | Q1 2026 | |
| 6 | MORGAN STANLEY | $136.4M | 1.9M | ▼−4.7% Reduced · −96K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $123.5M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 8 | JENNISON ASSOCIATES LLC | $120.1M | 1.7M | ▼−23% Reduced · −518K sh | Q1 2026 | |
| 9 | BANK OF AMERICA CORP /DE/ | $83.8M | 1.2M | ▲+58% Added · +436K sh | Q1 2026 | |
| 10 | TANG CAPITAL MANAGEMENT LLC | $83.4M | 1.2M | —Held | Q1 2026 | |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | $78.7M | 1.1M | ▲+18% Added · +173K sh | Q1 2026 | |
| 12 | STATE STREET CORP | $68.6M | 978K | ▲+5.3% Added · +49K sh | Q1 2026 | |
| 13 | D. E. Shaw & Co., Inc. | $55.5M | 791K | ▲+29% Added · +176K sh | Q1 2026 | |
| 14 | FMR LLC | $51.4M | 733K | ▲+13% Added · +86K sh | Q1 2026 | |
| 15 | Frazier Life Sciences Management, L.P. | $51.1M | 729K | —Held | Q1 2026 | |
| 16 | MILLENNIUM MANAGEMENT LLC | $39.6M | 565K | ▲+383% Added · +448K sh | Q1 2026 | |
| 17 | Clearbridge Investments, LLC | $38.3M | 545K | ▲+7.8% Added · +39K sh | Q1 2026 | |
| 18 | TORONTO DOMINION BANK | $35.8M | 510K | —Held | Q1 2026 | |
| 19 | GOLDMAN SACHS GROUP INC | $30.8M | 440K | ▲+16% Added · +61K sh | Q1 2026 | |
| 20 | LOOMIS SAYLES & CO L P | $28.6M | 408K | ▼−7.7% Reduced · −34K sh | Q1 2026 | |
| 21 | WASATCH ADVISORS LP | $23.2M | 369K | ▲New +369K sh | Q2 2026 | |
| 22 | NORTHERN TRUST CORP | $24.8M | 353K | ▲+3.0% Added · +10K sh | Q1 2026 | |
| 23 | VANGUARD PORTFOLIO MANAGEMENT LLC | $23.6M | 336K | ▲New +336K sh | Q1 2026 | |
| 24 | FRANKLIN RESOURCES INC | $23.4M | 334K | ▼−1.0% Reduced · −3K sh | Q1 2026 | |
| 25 | Ensign Peak Advisors, Inc | $23.4M | 333K | ▼−30% Reduced · −141K 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 25, 2026 | PYOTT DAVID E I | Director | Grant (A) | 806 | $0 |
| Jun 25, 2026 | PYOTT DAVID E I | Director | Grant (A) | 2K | $0 |
| Jun 25, 2026 | PYOTT DAVID E I | Director | Grant (A) | 4K | $0 |
| Jun 25, 2026 | YARNO WENDY L | Director | Grant (A) | 1K | $0 |
| Jun 25, 2026 | YARNO WENDY L | Director | Grant (A) | 2K | $0 |
| Jun 25, 2026 | YARNO WENDY L | Director | Grant (A) | 4K | $0 |
| Jun 25, 2026 | Morrison Scott W | Director | Grant (A) | 2K | $0 |
| Jun 25, 2026 | Morrison Scott W | Director | Grant (A) | 4K | $0 |
| Jun 25, 2026 | LINK WILLIAM J PHD | Director | Grant (A) | 806 | $0 |
| Jun 25, 2026 | Goodrich Katherine | Director | Grant (A) | 2K | $0 |
| Jun 25, 2026 | Goodrich Katherine | Director | Grant (A) | 4K | $0 |
| Jun 25, 2026 | Goldberg Andrew D. | Director | Grant (A) | 2K | $0 |
| Company | Co-held by | Combined value |
|---|---|---|
| BOSTON SCIENTIFIC CORPBSX | 77 funds | $3.3B |
| ELI LILLY & COLLY | 76 funds | $9.6B |
| NVIDIA CORPNVDA | 75 funds | $54.0B |
| MICROSOFT CORPMSFT | 74 funds | $37.7B |
| META PLATFORMS INC-CLASS AMETA | 74 funds | $17.4B |
| GILEAD SCIENCES INCGILD | 74 funds | $2.8B |
| AMAZON.COM INCAMZN | 73 funds | $28.5B |
| UNITEDHEALTH GROUP INCUNH | 73 funds | $3.3B |
| INTUITIVE SURGICAL INCISRG | 73 funds | $3.1B |
| ALPHABET INC-CL AGOOGL | 72 funds | $24.4B |
| COSTCO WHOLESALE CORPCOST | 72 funds | $6.2B |
| DANAHER CORPDHR | 72 funds | $1.9B |
Ranked by how many of TARS'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 TARS. 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.