Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in NSPR held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | Rosalind Advisors, Inc. | 3.9M | $6.4M | 0.0% | 8.329% | 2.61% |
| 2 | Nantahala Capital Management, LLC | 3.4M | $5.5M | 0.0% | 7.200% | 0.28% |
| 3 | abrdn plc | 3.2M | $5.2M | 0.0% | 6.767% | 0.01% |
| 4 | ORBIMED ADVISORS LLC | 3.1M | $5.1M | 0.0% | 6.682% | 0.11% |
| 5 | Parkman Healthcare Partners LLC | 2.4M | $3.9M | 0.0% | 5.153% | 0.41% |
| 6 | Velan Capital Investment Management LP | 2.1M | $3.4M | -2.1% | 4.478% | 2.14% |
| 7 | MARSHALL WACE, LLP | 1.9M | $3.0M | 0.0% | 3.967% | 0.00% |
| 8 | Soleus Capital Management, L.P. | 1.0M | $1.7M | -9.1% | 2.230% | 0.07% |
| 9 | PURA VIDA INVESTMENTS, LLC | 451K | $734K | 0.0% | 0.961% | 4.94% |
| 10 | Affiance Financial, LLC | 250K | $408K | 0.0% | 0.534% | 0.07% |
| 11 | ESSEX INVESTMENT MANAGEMENT CO LLC | 114K | $186K | 0.0% | 0.243% | 0.03% |
| 12 | MILLENNIUM MANAGEMENT LLC | 112K | $183K | -9.4% | 0.240% | 0.00% |
| 13 | BlackRock, Inc. | 80K | $131K | +32.1% | 0.172% | 0.00% |
| 14 | CITADEL ADVISORS LLC | 66K | $107K | -66.1% | 0.140% | 0.00% |
| 15 | MORGAN STANLEY | 40K | $65K | -4.8% | 0.085% | 0.00% |
| 16 | NORTHERN TRUST CORP | 34K | $55K | 0.0% | 0.072% | 0.00% |
| 17 | COURIER CAPITAL LLC | 30K | $49K | -45.5% | 0.064% | 0.00% |
| 18 | Mesirow Financial Investment Management, Inc. | 30K | $49K | — | 0.064% | 0.00% |
| 19 | Centiva Capital, LP | 25K | $40K | — | 0.053% | 0.00% |
| 20 | VESTIA PERSONAL WEALTH ADVISORS | 24K | $40K | -42.4% | 0.052% | 0.02% |
| 21 | Creative Planning | 20K | $32K | 0.0% | 0.042% | 0.00% |
| 22 | GEODE CAPITAL MANAGEMENT, LLC | 18K | $30K | 0.0% | 0.039% | 0.00% |
| 23 | RENAISSANCE TECHNOLOGIES LLC | 18K | $29K | — | 0.038% | 0.00% |
| 24 | Avestar Capital, LLC | 15K | $24K | 0.0% | 0.032% | 0.00% |
| 25 | Pallas Capital Advisors LLC | 13K | $21K | +18.2% | 0.028% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in NSPR — a direct measure of their conviction.
Filings activity in NSPR during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 34 | 23% | 106.64% | 11.54 pp | $37M | 9.8% |
| Q4 2025 | 44 | +7.3% | 118.18% | 40.04 pp | $40M | 25% |
| Q3 2025 | 41 | +11% | 158.22% | +64.97 pp | $54M | +70% |
| Q2 2025 | 37 | +8.8% | 93.25% | 7.20 pp | $32M | 7.2% |
| Q1 2025 | 34 | +13% | 100.45% | +2.99 pp | $34M | +3.1% |
| Q4 2024 | 30 | +3.4% | 97.46% | +0.42 pp | $33M | +0.4% |
| Q3 2024 | 29 | +21% | 97.04% | +10.03 pp | $33M | +12% |
| Q2 2024 | 24 | — | 87.01% | — | $30M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Latest Form 4 transactions by company officers and directors. Insider buys are widely viewed as the highest-conviction signal because executives are risking personal capital.
| Date | Insider | Action | Shares | Price | Value |
|---|---|---|---|---|---|
| May 12, 2026 | Slosman Marvin | Buy | 21K | $1.20 | $25K |
| May 7, 2026 | ROUBIN GARY S | Buy | 90K | $1.18 | $106K |
| May 6, 2026 | Ward Scott R. | Buy | 16K | $1.15 | $18K |
| May 6, 2026 | Stuka Paul | Buy | 2K | $1.12 | $2K |
Quick answers to the most common questions about buying NSPR stock.
Based on Q1 2026 13F filings, institutional ownership of InspireMD, Inc. stands at 106.6%, held across 34 reporting institutions.
Rosalind Advisors, Inc. is the largest reported institutional holder of NSPR, with approximately 3,905,743 shares worth $0.01B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of NSPR, including MILLENNIUM MANAGEMENT LLC, CITADEL ADVISORS LLC, RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for NSPR is 38 out of 100 (Bearish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
3 institutions opened new positions in NSPR during Q1 2026, while 13 fully exited. 4 added to existing positions and 26 trimmed.
NSPR institutional ownership fell by 11.54 percentage points quarter-over-quarter, with a net change of -10 holders.
The top 10 institutions account for 96.9% of all reported 13F value in NSPR, and the top 25 account for 99.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
InspireMD, Inc. (NSPR) Institutional Ownership