Who owns Insight Molecular Diagnostics (IMDX)
Which tracked institutional funds hold IMDX, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See IMDX company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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 IMDX is one-sided between 2026-Q1 and 2026-Q2: 9 added or opened and 3 trimmed or exited — on balance accumulating.
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
IMDX’s largest tracked holder by dollar value, BROADWOOD CAPITAL INC, sizes it at 3.9% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 3.9pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in IMDX 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 2026-Q1 and 2026-Q2, across 39 tracked filers holding IMDX, 23 increased or opened the position and 21 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 IMDX between the 2026-Q1 and 2026-Q2 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.
New buyers 1
- JANE STREET GROUP, LLC$930K
Full exits 3
- Alyeska Investment Group, L.P.$3M
- HEIGHTS CAPITAL MANAGEMENT, INC$1M
- FNY Investment Advisers, LLC$811K
Largest adds
- BROADWOOD CAPITAL INC$36M
- AWM Investment Company, Inc.$8M
- VANGUARD CAPITAL MANAGEMENT LLC$3M
- Family Office Research LLC$2M
- GEODE CAPITAL MANAGEMENT, LLC$657K
- BlackRock, Inc.$444K
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 |
|---|---|---|---|---|
| BROADWOOD CAPITAL INC added | 12,684,884 | $75M | 63.4% | 2026-Q2 |
| AWM Investment Company, Inc. added | 2,836,692 | $17M | 14.2% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC added | 735,847 | $4M | 3.7% | 2026-Q2 |
| PURA VIDA INVESTMENTS, LLC trimmed | 484,845 | $3M | 2.4% | 2026-Q2 |
| Family Office Research LLC added | 368,849 | $2M | 1.8% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 256,903 | $2M | 1.3% | 2026-Q2 |
| JANE STREET GROUP, LLC added | 157,682 | $930K | 0.8% | 2026-Q2 |
| BlackRock, Inc. added | 150,521 | $888K | 0.8% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 124,576 | $735K | 0.6% | 2026-Q2 |
| STATE STREET CORP added | 92,124 | $544K | 0.5% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 82,499 | $487K | 0.4% | 2026-Q2 |
| UBS Group AG added | 53,276 | $314K | 0.3% | 2026-Q2 |
| NORTHERN TRUST CORP | 49,090 | $290K | 0.2% | 2026-Q2 |
| OSAIC HOLDINGS, INC. added | 39,136 | $231K | 0.2% | 2026-Q2 |
| MORGAN STANLEY trimmed | 35,515 | $210K | 0.2% | 2026-Q2 |
| Jefferies Financial Group Inc. new | 18,100 | $107K | 0.1% | 2026-Q2 |
| MARSHALL WACE, LLP new | 16,597 | $98K | 0.1% | 2026-Q2 |
| ExodusPoint Capital Management, LP new | 14,029 | $83K | 0.1% | 2026-Q2 |
| AXQ CAPITAL, LP new | 13,407 | $79K | 0.1% | 2026-Q2 |
| Flatrock Wealth Partners LLC | 13,044 | $77K | 0.1% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP new | 11,101 | $65K | 0.1% | 2026-Q2 |
| XTX Topco Ltd trimmed | 10,743 | $63K | 0.1% | 2026-Q2 |
| Private Advisor Group, LLC | 10,416 | $61K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 5,801 | $34K | 0.0% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 5,775 | $34K | 0.0% | 2026-Q2 |
| EverSource Wealth Advisors, LLC added | 5,000 | $30K | 0.0% | 2026-Q2 |
| Tower Research Capital LLC (TRC) added | 2,691 | $16K | 0.0% | 2026-Q2 |
| Steward Partners Investment Advisory, LLC new | 1,960 | $12K | 0.0% | 2026-Q2 |
| SBI Securities Co., Ltd. | 185 | $1K | 0.0% | 2026-Q2 |
| ROYAL BANK OF CANADA new | 251 | $1K | 0.0% | 2026-Q2 |
| JPMORGAN CHASE & CO | 154 | $835 | 0.0% | 2026-Q2 |
| JONES FINANCIAL COMPANIES LLLP new | 63 | $340 | 0.0% | 2026-Q2 |
| Caitong International Asset Management Co., Ltd added | 45 | $266 | 0.0% | 2026-Q2 |
| Piscataqua Savings Bank | 25 | $147 | 0.0% | 2026-Q2 |
| ALBION FINANCIAL GROUP /UT | 7 | $42 | 0.0% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 7 | $41 | 0.0% | 2026-Q2 |
| Cassaday & Co Wealth Management LLC trimmed | 6 | $36 | 0.0% | 2026-Q2 |
| Farther Finance Advisors, LLC | 1 | $6 | 0.0% | 2026-Q2 |
| Global Retirement Partners, LLC | 1 | $6 | 0.0% | 2026-Q2 |
| Alyeska Investment Group, L.P. new | 840,777 | $3M | 2.3% | 2026-Q1 stale (1 quarter behind) |
| HEIGHTS CAPITAL MANAGEMENT, INC new | 392,545 | $1M | 1.1% | 2026-Q1 stale (1 quarter behind) |
| FNY Investment Advisers, LLC added | 247,421 | $811K | 0.7% | 2026-Q1 stale (1 quarter behind) |
| Ghisallo Capital Management LLC new | 70,695 | $232K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 56,093 | $184K | 0.2% | 2026-Q1 stale (1 quarter behind) |
| 683 Capital Management, LLC trimmed | 29,000 | $95K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Qube Research & Technologies Ltd trimmed | 25,230 | $83K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Engineers Gate Manager LP new | 18,253 | $60K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| Point72 Asset Management, L.P. new | 12,250 | $40K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| OMERS ADMINISTRATION Corp trimmed | 10,500 | $34K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Advisory Services Network, LLC new | 3,100 | $10K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| CITIGROUP INC added | 815 | $3K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Ascentis Independent Advisors new | 450 | $1K | 0.0% | 2026-Q1 stale (1 quarter behind) |
| Federation des caisses Desjardins du Quebec new | 1 | $3 | 0.0% | 2026-Q1 stale (1 quarter behind) |
| VANGUARD GROUP INC added | 526,675 | $4M | 3.3% | 2025-Q4 stale (2 quarters behind) |
| GOLDMAN SACHS GROUP INC new | 23,965 | $180K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| CITADEL ADVISORS LLC added | 15,647 | $117K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| RENAISSANCE TECHNOLOGIES LLC trimmed | 13,400 | $100K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Hudson Bay Capital Management LP new | 13,061 | $98K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| ORG Partners LLC | 450 | $3K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| BANK OF AMERICA CORP /DE/ trimmed | 335 | $3K | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Motiv8 Investments LLC new | 10 | — | 0.0% | 2025-Q4 stale (2 quarters behind) |
| Defender Capital, LLC. new | 32,928 | $99K | 0.1% | 2025-Q2 stale (4 quarters behind) |
| RAYMOND JAMES FINANCIAL INC new | 1,189 | $4K | 0.0% | 2025-Q2 stale (4 quarters behind) |
| FMR LLC new | 5 | $15 | 0.0% | 2025-Q2 stale (4 quarters behind) |
| CONCOURSE FINANCIAL GROUP SECURITIES, INC. | 0 | — | 0.0% | 2025-Q2 stale (4 quarters behind) |
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.