Among active 13F managers last quarter, 3 opened and 4 added, while 5 reduced; the largest holder to move was Millennium Management LLC (+51%). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
47 tracked 13F filers disclose a position in JSPR as of the latest SEC 13F filings, a combined $7.1M in reported value. 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.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Velan Capital Investment Management LP | 2.7M | $1.1M | —Held | Q2 2026 | |
| 2 | Millennium Management LLC | 1.6M | $1.4M | ▲+51% Added · +544K sh | Q1 2026 | |
| 3 | Acorn Capital Advisors, LLC | 1.4M | $604K | ▲+1.9% Added · +27K sh | Q2 2026 | |
| 4 | Kingdon Capital Management, L.L.C. | 1.4M | $569K | —Held | Q2 2026 | |
| 5 | Morgan Stanley | 1.3M | $1.2M | ▼−32% Reduced · −636K sh | Q1 2026 | |
| 6 | Vanguard Capital Management LLC | 1.2M | $493K | ▼~0% Reduced · −576 sh | Q2 2026 | |
| 7 | Rock Springs Capital Management LP | 1.1M | $463K | —Held | Q2 2026 | |
| 8 | Bank Of America Corp | 293K | $257K | ▲+0.1% Added · +232 sh | Q1 2026 | |
| 9 | Geode Capital Management, LLC | 264K | $111K | ▼−17% Reduced · −54K sh | Q2 2026 | |
| 10 | Renaissance Technologies LLC | 178K | $156K | ▼−22% Reduced · −50K sh | Q1 2026 | |
| 11 | BlackRock, Inc. | 170K | $71K | ▼−30% Reduced · −72K sh | Q2 2026 | |
| 12 | Vanguard Fiduciary Trust Co | 150K | $63K | —Held | Q2 2026 | |
| 13 | ADAR1 Capital Management, LLC | 140K | $123K | —Held | Q1 2026 | |
| 14 | Quarry LP | 132K | $55K | —Held | Q2 2026 | |
| 15 | UBS Group AG | 81K | $71K | ▼−36% Reduced · −45K sh | Q1 2026 | |
| 16 | Squarepoint Ops LLC | 65K | $57K | ▼−77% Reduced · −217K sh | Q1 2026 | |
| 17 | Jain Global LLC | 51K | $22K | ▲+184% Added · +33K sh | Q2 2026 | |
| 18 | Marshall Wace, LLP | 46K | $40K | ▲New +46K sh | Q1 2026 | |
| 19 | State Street Corp | 45K | $19K | —Held | Q2 2026 | |
| 20 | Osaic Holdings, Inc. | 41K | $36K | —Held | Q1 2026 | |
| 21 | XTX Topco Ltd | 39K | $35K | ▲New +39K sh | Q1 2026 | |
| 22 | Diker Management LLC | 35K | $15K | —Held | Q2 2026 | |
| 23 | Northern Trust Corp | 35K | $30K | —Held | Q1 2026 | |
| 24 | Simplex Trading, LLC | 29K | $26K | ▲New +29K sh | Q1 2026 | |
| 25 | Ikarian Capital, LLC | 24K | $10K | —Held | Q2 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.
Last quarter, 3 funds opened a new position in JSPR and 4 added to an existing one, while 5 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Biocryst Pharmaceuticals IncBCRX | 17 funds | $19.8M |
| Nvidia CorpNVDA | 16 funds | $8.2B |
| Apple IncAAPL | 16 funds | $6.8B |
| Chevron CorpCVX | 16 funds | $2.7B |
| Advanced Micro DevicesAMD | 16 funds | $1.6B |
| Eli Lilly & CoLLY | 16 funds | $1.6B |
| Boston Scientific CorpBSX | 16 funds | $898.6M |
| McKesson CorpMCK | 16 funds | $330.5M |
| Microsoft CorpMSFT | 15 funds | $5.0B |
| Tesla IncTSLA | 15 funds | $2.6B |
| Unitedhealth Group IncUNH | 15 funds | $1.6B |
| Bank Of America CorpBAC | 15 funds | $1.2B |
Ranked by how many of JSPR's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in JSPR.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Sep 22, 2025 | Shizuru Judith Anne | Director | Buy (P) | 41K | $100K |
| Sep 22, 2025 | Martell Ron | President and CEO, Director | Buy (P) | 41K | $100K |
| Sep 22, 2025 | Lucas Svetlana | Director | Buy (P) | 20K | $49K |
| Sep 22, 2025 | Wiggans Thomas G | Director | Buy (P) | 41K | $100K |
| Dec 12, 2024 | Mahal Jeetinder Singh | Chief Operating Officer | Sell (S) | 900 | $20K |
| Sep 12, 2024 | Mahal Jeetinder Singh | Chief Operating Officer | Sell (S) | 900 | $19K |
| Jun 12, 2024 | Mahal Jeetinder Singh | Chief Operating Officer | Sell (S) | 900 | $22K |
| Mar 12, 2024 | Mahal Jeetinder Singh | Chief Operating Officer | Sell (S) | 900 | $24K |
| Feb 8, 2024 | Venkataraman Balaji | 10% Owner | Buy (P) | 350K | $4.5M |
| Feb 8, 2024 | Abingworth LLP | 10% Owner | Buy (P) | 190K | $2.5M |
| Nov 28, 2023 | Wiggans Thomas G | Director | Buy (P) | 10K | $7K |
| Nov 21, 2023 | Wiggans Thomas G | Director | Buy (P) | 10K | $6K |
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 8 | 13 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
| Class | 13F holders | Value held |
|---|---|---|
| JSPRthis pageEquity | 47 funds | $7.1M |
| JSPRWwt | 7 funds | $205K |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for JSPR
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/JSPR/capital-change-brief"
Use Arkolith's capital_change_brief for JSPR. 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 JSPR. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.