Institutional Holders (2026 Q1)
34 + investorsExplore institutional interest and hedge fund ownership dynamics. Analyze portfolio weights, new positions, and conviction trends in NSPR. Verified SEC 13F-HR filings.
| # | Investor | % of Portfolio | Shares | Mkt Value |
|---|---|---|---|---|
| 1 | PURA VIDA INVESTMENTS, LLC | 4.94% | 450,517 | $734K |
| 2 | Rosalind Advisors, Inc. | 2.56% | 3,905,743 | $6.4M |
| 3 | Velan Capital Investment Management LP | 2.14% | 2,099,652 | $3.4M |
| 4 | Parkman Healthcare Partners LLC | 0.41% | 2,416,518 | $3.9M |
| 5 | Nantahala Capital Management, LLC | 0.20% | 3,376,484 | $5.5M |
| 6 | ORBIMED ADVISORS LLC | 0.10% | 3,133,405 | $5.1M |
| 7 | Soleus Capital Management, L.P. | 0.07% | 1,045,708 | $1.7M |
| 8 | Affiance Financial, LLC | 0.07% | 250,370 | $408K |
| 9 | ESSEX INVESTMENT MANAGEMENT CO LLC | 0.03% | 114,085 | $186K |
| 10 | INGALLS & SNYDER LLC | 0.02% | 379,300 | — |
| 11 | VESTIA PERSONAL WEALTH ADVISORS | 0.02% | 24,425 | $40K |
| 12 | Aberdeen Group plc | 0.01% | 3,173,364 | $5.2M |
| 13 | Legato Capital Management LLC | 0.00% | 26,850 | $44K |
| 14 | MARSHALL WACE, LLP | 0.00% | 1,860,405 | $3.0M |
| 15 | COURIER CAPITAL LLC | 0.00% | 30,000 | $49K |
| 16 | Avestar Capital, LLC | 0.00% | 15,000 | $24K |
| 17 | McKinley Carter Wealth Services, Inc. | 0.00% | 10,000 | $16K |
| 18 | Pallas Capital Advisors LLC | 0.00% | 13,000 | $21K |
| 19 | Mesirow Financial Investment Management, Inc. | 0.00% | 30,000 | $49K |
| 20 | AdvisorNet Financial, Inc | 0.00% | 8,783 | $14K |
| 21 | XTX Topco Ltd | 0.00% | 12,358 | $20K |
| 22 | Centiva Capital, LP | 0.00% | 24,766 | $40K |
| 23 | MILLENNIUM MANAGEMENT LLC | 0.00% | 112,423 | $183K |
| 24 | RENAISSANCE TECHNOLOGIES LLC | 0.00% | 17,609 | $29K |
| 25 | OSAIC HOLDINGS, INC. | 0.00% | 10,452 | $17K |
| Investor | Ownership History |
% of Portfolio | Prev % | Rank | Conviction | Avg Buy Price | 13F Score™ 3Y / 7Y | Sell Timing | Shares | Mkt Value | Change | Change % | Source | Quarter | Filed |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|