Who owns InspireMD, Inc. (NSPR)
Which tracked institutional funds hold NSPR, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See NSPR company fundamentals →
Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-15). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on NSPR is one-sided between 2025-Q4 and 2026-Q1: 0 added or opened and 8 trimmed or exited — on balance reducing.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
NSPR’s largest tracked holder by dollar value, Rosalind Advisors, Inc., sizes it at 2.6% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 2.6pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in NSPR divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 35 tracked filers holding NSPR, 7 increased or opened the position and 23 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in NSPR between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
Largest trims
- Rosalind Advisors, Inc.$586K
- Nantahala Capital Management, LLC$506K
- Aberdeen Group plc$476K
- ORBIMED ADVISORS LLC$470K
- Velan Capital Investment Management LP$393K
- Parkman Healthcare Partners LLC$362K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| Rosalind Advisors, Inc. | 3,905,743 | $6M | 15.6% | 2026-Q1 |
| Nantahala Capital Management, LLC | 3,376,484 | $6M | 13.5% | 2026-Q1 |
| Aberdeen Group plc | 3,173,364 | $5M | 12.7% | 2026-Q1 |
| ORBIMED ADVISORS LLC | 3,133,405 | $5M | 12.5% | 2026-Q1 |
| Parkman Healthcare Partners LLC | 2,416,518 | $4M | 9.7% | 2026-Q1 |
| Velan Capital Investment Management LP trimmed | 2,099,652 | $3M | 8.4% | 2026-Q1 |
| MARSHALL WACE, LLP | 1,860,405 | $3M | 7.4% | 2026-Q1 |
| Soleus Capital Management, L.P. trimmed | 1,045,708 | $2M | 4.2% | 2026-Q1 |
| PURA VIDA INVESTMENTS, LLC | 450,517 | $734K | 1.8% | 2026-Q1 |
| INGALLS & SNYDER LLC trimmed | 379,300 | $618K | 1.5% | 2026-Q1 |
| Affiance Financial, LLC | 250,370 | $408K | 1.0% | 2026-Q1 |
| ESSEX INVESTMENT MANAGEMENT CO LLC | 114,085 | $186K | 0.5% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC trimmed | 112,423 | $183K | 0.4% | 2026-Q1 |
| BlackRock, Inc. added | 80,449 | $131K | 0.3% | 2026-Q1 |
| CITADEL ADVISORS LLC trimmed | 65,750 | $107K | 0.3% | 2026-Q1 |
| MORGAN STANLEY trimmed | 39,836 | $65K | 0.2% | 2026-Q1 |
| NORTHERN TRUST CORP | 33,572 | $55K | 0.1% | 2026-Q1 |
| Mesirow Financial Investment Management, Inc. | 30,000 | $49K | 0.1% | 2026-Q1 |
| COURIER CAPITAL LLC trimmed | 30,000 | $49K | 0.1% | 2026-Q1 |
| Legato Capital Management LLC | 26,850 | $44K | 0.1% | 2026-Q1 |
| Centiva Capital, LP new | 24,766 | $40K | 0.1% | 2026-Q1 |
| VESTIA PERSONAL WEALTH ADVISORS trimmed | 24,425 | $40K | 0.1% | 2026-Q1 |
| Creative Planning | 19,714 | $32K | 0.1% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC | 18,244 | $30K | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 17,609 | $29K | 0.1% | 2026-Q1 |
| Avestar Capital, LLC | 15,000 | $24K | 0.1% | 2026-Q1 |
| Pallas Capital Advisors LLC added | 13,000 | $21K | 0.1% | 2026-Q1 |
| XTX Topco Ltd trimmed | 12,358 | $20K | 0.0% | 2026-Q1 |
| OSAIC HOLDINGS, INC. added | 10,452 | $17K | 0.0% | 2026-Q1 |
| McKinley Carter Wealth Services, Inc. | 10,000 | $16K | 0.0% | 2026-Q1 |
| AdvisorNet Financial, Inc | 8,783 | $14K | 0.0% | 2026-Q1 |
| UBS Group AG added | 2,098 | $3K | 0.0% | 2026-Q1 |
| Farther Finance Advisors, LLC | 1,000 | $2K | 0.0% | 2026-Q1 |
| SIMPLEX TRADING, LLC trimmed | 603 | $982 | 0.0% | 2026-Q1 |
| ROYAL BANK OF CANADA | 180 | — | 0.0% | 2026-Q1 |
| Ghisallo Capital Management LLC new | 921,587 | $2M | 5.4% | 2025-Q3 stale |
| Huntleigh Advisors, Inc. added | 264,004 | $636K | 1.6% | 2025-Q3 stale |
| IRONWOOD INVESTMENT MANAGEMENT LLC added | 61,579 | $148K | 0.4% | 2025-Q3 stale |
| RAYMOND JAMES FINANCIAL INC added | 44,604 | $101K | 0.2% | 2025-Q2 stale |
| Dana Investment Advisors, Inc. new | 30,081 | $81K | 0.2% | 2025-Q1 stale |
| NOTTINGHAM ADVISORS, INC. | 30,000 | $81K | 0.2% | 2025-Q1 stale |
| COMMONWEALTH EQUITY SERVICES, LLC | 32,550 | $58K | 0.1% | 2025-Q4 stale |
| Uniting Wealth Partners, LLC added | 21,066 | $51K | 0.1% | 2025-Q3 stale |
| HOLLENCREST CAPITAL MANAGEMENT | 20,000 | $48K | 0.1% | 2025-Q3 stale |
| Schonfeld Strategic Advisors LLC trimmed | 23,334 | $42K | 0.1% | 2025-Q4 stale |
| Virtu Financial LLC trimmed | 17,684 | $31K | 0.1% | 2025-Q4 stale |
| GOLDMAN SACHS GROUP INC trimmed | 12,908 | $23K | 0.1% | 2025-Q4 stale |
| TWO SIGMA SECURITIES, LLC trimmed | 11,789 | $21K | 0.1% | 2025-Q4 stale |
| BROWN ADVISORY INC | 10,000 | $18K | 0.0% | 2025-Q4 stale |
| HRT FINANCIAL LP trimmed | 10,089 | $17K | 0.0% | 2025-Q4 stale |
| GROUP ONE TRADING LLC | 4,000 | $7K | 0.0% | 2025-Q4 stale |
| JPMORGAN CHASE & CO added | 2,853 | $6K | 0.0% | 2025-Q2 stale |
| BELLEVUE ASSET MANAGEMENT, LLC | 25 | $2K | 0.0% | 2025-Q4 stale |
| SBI Securities Co., Ltd. | 230 | $554 | 0.0% | 2025-Q3 stale |
| NATIONAL BANK OF CANADA /FI/ | 206 | $468 | 0.0% | 2025-Q2 stale |
| BANK OF AMERICA CORP /DE/ trimmed | 113 | $201 | 0.0% | 2025-Q4 stale |
| Global Retirement Partners, LLC | 27 | $48 | 0.0% | 2025-Q4 stale |
| JONES FINANCIAL COMPANIES LLLP new | 27 | $48 | 0.0% | 2025-Q4 stale |
| Koesten, Hirschmann & Crabtree, INC. new | 2 | $5 | 0.0% | 2025-Q3 stale |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 1 | $3 | 0.0% | 2025-Q1 stale |
| CITIGROUP INC trimmed | 1 | $2 | 0.0% | 2025-Q4 stale |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.