Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in BDSX held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | AIGH Capital Management LLC | 758K | $11.0M | β | 10.043% | 2.25% |
| 2 | Telemark Asset Management, LLC | 490K | $7.1M | +49.4% | 6.487% | 0.66% |
| 3 | abrdn plc | 458K | $6.6M | +74.7% | 6.071% | 0.01% |
| 4 | Soleus Capital Management, L.P. | 417K | $6.0M | β | 5.517% | 0.24% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 255K | $3.7M | β | 3.379% | 0.00% |
| 6 | Opaleye Management Inc. | 238K | $3.5M | β | 3.152% | 0.45% |
| 7 | MARSHALL WACE, LLP | 142K | $2.1M | β | 1.876% | 0.00% |
| 8 | ESSEX INVESTMENT MANAGEMENT CO LLC | 132K | $1.9M | β | 1.749% | 0.30% |
| 9 | STEMPOINT CAPITAL LP | 70K | $1.0M | β | 0.927% | 0.27% |
| 10 | Trexquant Investment LP | 70K | $1.0M | +152.7% | 0.922% | 0.01% |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 50K | $726K | +17.8% | 0.662% | 0.00% |
| 12 | TWO SIGMA INVESTMENTS, LP | 45K | $656K | β | 0.599% | 0.00% |
| 13 | PERKINS CAPITAL MANAGEMENT INC | 45K | $649K | 0.0% | 0.593% | 0.61% |
| 14 | SEI INVESTMENTS CO | 43K | $624K | β | 0.570% | 0.00% |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 38K | $549K | β | 0.502% | 0.00% |
| 16 | UBS Group AG | 37K | $534K | β | 0.487% | 0.00% |
| 17 | MORGAN STANLEY | 32K | $470K | +53001.6% | 0.429% | 0.00% |
| 18 | VANGUARD FIDUCIARY TRUST CO | 29K | $416K | β | 0.380% | 0.00% |
| 19 | BLAIR WILLIAM & CO/IL | 28K | $400K | β | 0.365% | 0.00% |
| 20 | JANE STREET GROUP, LLC | 27K | $392K | β | 0.358% | 0.00% |
| 21 | BlackRock, Inc. | 24K | $355K | 0.0% | 0.324% | 0.00% |
| 22 | MILLENNIUM MANAGEMENT LLC | 24K | $348K | β | 0.318% | 0.00% |
| 23 | STATE STREET CORP | 18K | $258K | 0.0% | 0.236% | 0.00% |
| 24 | Cetera Investment Advisers | 12K | $174K | +20.0% | 0.159% | 0.00% |
| 25 | RENAISSANCE TECHNOLOGIES LLC | 12K | $173K | β | 0.158% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in BDSX β a direct measure of their conviction.
Filings activity in BDSX during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new BDSX position in Q1 2026
Institutions that fully closed their BDSX position in Q1 2026
3 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 39 | +63% | 45.06% | +37.51 pp | $51M | +497% |
| Q4 2025 | 24 | +0.0% | 7.55% | +0.28 pp | $9M | +3.8% |
| Q3 2025 | 24 | β | 7.27% | β | $8M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying BDSX stock.
Based on Q1 2026 13F filings, institutional ownership of Biodesix, Inc. stands at 45.1%, held across 39 reporting institutions.
AIGH Capital Management LLC is the largest reported institutional holder of BDSX, with approximately 758,328 shares worth $0.01B as of Q1 2026.
Yes β 5 widely-followed marquee investors appear among the top 25 institutional holders of BDSX, including TWO SIGMA INVESTMENTS, LP, SUSQUEHANNA INTERNATIONAL GROUP, LLP, JANE STREET GROUP, LLC, MILLENNIUM MANAGEMENT LLC, RENAISSANCE TECHNOLOGIES LLC.
Our composite Smart Money Score for BDSX is 84 out of 100 (Strong Smart Money). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
24 institutions opened new positions in BDSX during Q1 2026, while 9 fully exited. 14 added to existing positions and 1 trimmed.
BDSX institutional ownership rose by 37.51 percentage points quarter-over-quarter, with a net change of +15 holders.
The top 10 institutions account for 85.7% of all reported 13F value in BDSX, and the top 25 account for 98.8%.
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.
Biodesix, Inc. (BDSX) Institutional Ownership