BIODESIX INC BDSX
COM · Common Stock · CUSIP 09075X207
- SectorHealth care
- IndustryServices-Medical Laboratories
- HeadquartersLouisville, CO
- FilingsSEC EDGAR
* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 8.0m as of 2025-10-28, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $6.80. Options: 1 managers hold calls ($85.0k notional), 0 hold puts (—).
Trends to Q4 2025
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2025 | 25 |
| Q4 2025 | 25 |
Calls vs puts
Options held, notional value, last 4 quarters. P/C = puts ÷ calls
Numbers
| Quarter | Calls | Puts | P/C |
|---|---|---|---|
| Q1 2025 | $0 | $0 | — |
| Q2 2025 | $0 | $0 | — |
| Q3 2025 | $120.8k | $0 | 0.00 |
| Q4 2025 | $85.0k | $0 | 0.00 |
Biggest buyers
| Aberdeen Group plc | New | +262.4k |
| Trexquant Investment LP | New | +27.5k |
| CITADEL ADVISORS LLC | New | +26.0k |
| GSA CAPITAL PARTNERS LLP | Added | +16.1k |
| DRW Securities, LLC | New | +15.4k |
| Monashee Investment Management LLC | Added | +12.3k |
| NORTHERN TRUST CORP | New | +11.1k |
| VANGUARD GROUP INC | Added | +10.2k |
| Cetera Investment Advisers | New | +10.0k |
| STATE STREET CORP | Added | +2.4k |
Biggest sellers
| Telemark Asset Management, LLC | Reduced | -86.3k |
| SILVERARC CAPITAL MANAGEMENT, LLC | Sold out | -49.6k |
| ORACLE INVESTMENT MANAGEMENT INC | Sold out | -15.0k |
| MILLENNIUM MANAGEMENT LLC | Sold out | -14.9k |
| Cannell & Spears LLC | Sold out | -10.3k |
| Balyasny Asset Management L.P. | Reduced | -10.0k |
| ROYAL BANK OF CANADA | Sold out | -8.9k |
| PERKINS CAPITAL MANAGEMENT INC | Reduced | -7.8k |
| CIBC Private Wealth Group LLC | Sold out | -1.5k |
| Tower Research Capital LLC (TRC) | Reduced | -451 |
Biggest calls
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | Reduced | $85.0k12.5k shares |
Biggest puts
| None |
Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.
Major shareholders (over 5%)
Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.
| Holder | Stake |
|---|---|
SCHULER JACK W
13D · may seek influence
-3.0 pts · filed 2026-01-27
Stated purposeItem 4 of the Schedule 13D is hereby amended and supplemented as follows: Mr. Schuler transitioned to the role of emeritus director of the Issuer at the Issuer's 2025 Annual Meeting of Stockholders held on May 20, 2025. Full filing |
24.0% |
| HIRSCHMAN ORIN 13G · institution new · filed 2026-04-28 | 7.7% |
| Telemark Asset Management, LLC 13G · passive investor +1.3 pts · filed 2026-01-26 | 5.4% |
| Soleus Capital Master Fund, L.P. 13G · passive investor +1.0 pts · filed 2026-06-18 | 5.1% |
Fell to 5% or below in the last year: PERCEPTIVE ADVISORS LLC (4.6%, 2026-05-15)
Insider purchases and sales in Q4 2025
Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.
Officers and directors buying vs selling
Number of people, by quarter (10% owners not included)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q1 2024 | 0 | — | 5 | $194.2k | — |
| Q2 2024 | 0 | — | 5 | $8.7k | — |
| Q3 2024 | 0 | — | 5 | $9.3k | — |
| Q4 2024 | 5 | $821.6k | 5 | $8.1k | — |
| Q1 2025 | 0 | — | 5 | — | — |
| Q2 2025 | 1 | — | 5 | — | — |
| Q3 2025 | 1 | $1.1m | 5 | — | — |
| Q4 2025 | 0 | — | 5 | $2.3k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2025-11-10 | Hutton Scott President & CEO, director | Sold | $1.4k189 shares |
| 2025-11-10 | Cowie Robin Harper CFO, Sec'y & Treasurer | Sold | $38150 shares |
| 2025-11-10 | O'Kane Kieran Chief Commercial Officer | Sold | $19025 shares |
| 2025-11-10 | Pestano Gary Anthony Chief Development Officer | Sold | $17523 shares |
| 2025-11-10 | Vazquez Chris Chief Accounting Officer | Sold | $9913 shares |
Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).
Holders, Q4 2025
| Manager | Shares | Change |
|---|---|---|
| Telemark Asset Management, LLC 0.22% of their portfolio | 327.8k $2.2m | Reduced -86.3k |
| Aberdeen Group plc 0.00% of their portfolio | 262.4k $1.8m | New |
| VANGUARD GROUP INC 0.00% of their portfolio | 192.1k $1.3m | Added +10.2k |
| Monashee Investment Management LLC 0.43% of their portfolio | 112.3k $763.9k | Added +12.3k |
| PERCEPTIVE ADVISORS LLC 0.01% of their portfolio | 108.7k $739.1k | Unchanged |
| GSA CAPITAL PARTNERS LLP 0.04% of their portfolio | 64.5k $438.0k | Added +16.1k |
| PERKINS CAPITAL MANAGEMENT INC 0.24% of their portfolio | 44.8k $304.5k | Reduced -7.8k |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 42.5k $288.8k | Added +2.2k |
| Balyasny Asset Management L.P. 0.00% of their portfolio | 33.0k $224.5k | Reduced -10.0k |
| Trexquant Investment LP 0.00% of their portfolio | 27.5k $187.3k | New |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 26.0k $176.7k | New |
| BlackRock, Inc. 0.00% of their portfolio | 24.5k $166.4k | Unchanged |
| STATE STREET CORP 0.00% of their portfolio | 17.8k $121.1k | Added +2.4k |
| Shay Capital LLC 0.02% of their portfolio | 16.1k $109.8k | Added +2.1k |
| DRW Securities, LLC 0.01% of their portfolio | 15.4k $104.5k | New |
| NORTHERN TRUST CORP 0.00% of their portfolio | 11.1k $75.7k | New |
| Cetera Investment Advisers 0.00% of their portfolio | 10.0k $68.0k | New |
| Allworth Financial LP 0.00% of their portfolio | 5.0k $33.8k | Unchanged |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 193 $1.3k | Reduced -451 |
| Quattro Advisors LLC 0.00% of their portfolio | 187 $1.3k | First filing |
| Fortitude Family Office, LLC 0.00% of their portfolio | 171 $1.2k | Unchanged |
| BANK OF AMERICA CORP /DE/ 0.00% of their portfolio | 143 $972 | Added +113 |
| GROUP ONE TRADING LLC 0.00% of their portfolio | 100 $680 | Unchanged |
| MORGAN STANLEY 0.00% of their portfolio | 61 $415 | Reduced -15 |
| FMR LLC 0.00% of their portfolio | 1 $7 | Unchanged |