| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Commodore Capital LP | $10.9M | 1.9M | ▲New +1.9M sh | Q1 2026 | |
| 2 | RA CAPITAL MANAGEMENT, L.P. | $10.7M | 1.9M | ▲New +1.9M sh | Q1 2026 | |
| 3 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $10.1M | 1.8M | ▲+329% Added · +1.4M sh | Q1 2026 | |
| 4 | T. Rowe Price Investment Management, Inc. | Withheld | 1.5M | ▲+3.4% Added · +51K sh | Q1 2026 | |
| 5 | GOLDMAN SACHS GROUP INC | $5.3M | 948K | ▲New +948K sh | Q1 2026 | |
| 6 | Catalio Capital Management, LP | $5.0M | 898K | ▲+528% Added · +755K sh | Q1 2026 | |
| 7 | VANGUARD CAPITAL MANAGEMENT LLC | $4.1M | 740K | ▲New +740K sh | Q1 2026 | |
| 8 | Ikarian Capital, LLC | $4.1M | 733K | ▲+35% Added · +189K sh | Q1 2026 | |
| 9 | Affinity Asset Advisors, LLC | $2.8M | 500K | ▼−44% Reduced · −390K sh | Q1 2026 | |
| 10 | Avidity Partners Management LP | $2.6M | 464K | ▲+245% Added · +329K sh | Q1 2026 | |
| 11 | Soleus Capital Management, L.P. | $2.5M | 440K | —Held | Q1 2026 | |
| 12 | MILLENNIUM MANAGEMENT LLC | $2.3M | 421K | ▲New +421K sh | Q1 2026 | |
| 13 | Boxer Capital Management, LLC | $1.7M | 303K | ▲+20% Added · +50K sh | Q1 2026 | |
| 14 | DAVIDSON KEMPNER CAPITAL MANAGEMENT LP | $1.7M | 300K | ▼−3.2% Reduced · −10K sh | Q1 2026 | |
| 15 | ACORN CAPITAL ADVISORS, LLC | $1.6M | 288K | ▲New +288K sh | Q1 2026 | |
| 16 | Eversept Partners, LP | $1.5M | 276K | ▲New +276K sh | Q1 2026 | |
| 17 | Jump Financial, LLC | $1.5M | 262K | ▲+387% Added · +208K sh | Q1 2026 | |
| 18 | Trexquant Investment LP | $1.4M | 258K | ▲+518% Added · +216K sh | Q1 2026 | |
| 19 | BlackRock, Inc. | $1.4M | 245K | ▼−1.1% Reduced · −3K sh | Q1 2026 | |
| 20 | BOOTHBAY FUND MANAGEMENT, LLC | $1.2M | 214K | ▲+48% Added · +69K sh | Q1 2026 | |
| 21 | GEODE CAPITAL MANAGEMENT, LLC | $1.1M | 206K | ▲+9.8% Added · +18K sh | Q1 2026 | |
| 22 | UBS Group AG | $1.1M | 194K | ▲+119% Added · +106K sh | Q1 2026 | |
| 23 | GROUP ONE TRADING LLC | $1.1M | 192K | ▲+87% Added · +89K sh | Q1 2026 | |
| 24 | XTX Topco Ltd | $916K | 164K | ▲14× Added · +153K sh | Q1 2026 | |
| 25 | TWO SIGMA INVESTMENTS, LP | $842K | 151K | ▲+1.6% Added · +2K 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.
| Company | Co-held by | Combined value |
|---|---|---|
| TERNS PHARMACEUTICALS INC430 | 15 funds | $83.0M |
| MICROSOFT CORPMSFT | 14 funds | $4.1B |
| CVS HEALTH CORPCVS | 14 funds | $248.8M |
| AMAZON.COM INCAMZN | 13 funds | $3.1B |
| BROADCOM INCAVGO | 13 funds | $2.0B |
| ELI LILLY & COLLY | 13 funds | $1.2B |
| UNITEDHEALTH GROUP INCUNH | 13 funds | $760.3M |
| RTX CORPRTX | 13 funds | $445.2M |
| BOSTON SCIENTIFIC CORPBSX | 13 funds | $287.8M |
| CENTENE CORPCNC | 13 funds | $170.7M |
| INSPIRE MEDICAL SYSTEMS INCINSP | 13 funds | $99.6M |
| ELEVANCE HEALTH INCELV | 13 funds | $89.7M |
Ranked by how many of KPTI's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| May 14, 2026 | Cheng Sohanya Roshan | EVP & Chief Commercial Officer | Sell (S) | 324 | $3K |
| May 14, 2026 | Abate Kristin | Chief Accounting Officer | Sell (S) | 53 | $504 |
| May 14, 2026 | Paulson Richard A. | President and CEO, Director | Sell (S) | 2K | $21K |
| May 14, 2026 | Mano Michael | EVP, CLO&Secretary | Sell (S) | 266 | $3K |
| May 14, 2026 | Rangwala Reshma | EVP & Chief Medical Officer | Sell (S) | 408 | $4K |
| May 14, 2026 | Poulton Stuart | EVP, Chief Development Officer | Sell (S) | 403 | $4K |
| Apr 21, 2026 | Rangwala Reshma | EVP & Chief Medical Officer | Sell (S) | 449 | $4K |
| Mar 2, 2026 | Paulson Richard A. | President and CEO, Director | Sell (S) | 12K | $116K |
| Mar 2, 2026 | Rangwala Reshma | EVP & Chief Medical Officer | Sell (S) | 5K | $48K |
| Mar 2, 2026 | Mano Michael | EVP, CLO&Secretary | Sell (S) | 4K | $33K |
| Mar 2, 2026 | Cheng Sohanya Roshan | EVP & Chief Commercial Officer | Sell (S) | 5K | $43K |
| Mar 2, 2026 | Poulton Stuart | EVP, Chief Development Officer | Sell (S) | 5K | $48K |
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/KPTI/capital-change-brief"
Use Arkolith's capital_change_brief for KPTI. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for KPTI. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.