Biodesix Ownership | Who Owns Biodesix?

Overview Forecast RevenueFinancials Chart Transcripts

Biodesix Ownership Summary

Biodesix is owned by 6.73% institutional investors, 54.69% insiders, and 38.58% retail investors. Telemark asset management is the largest institutional shareholder, holding 4.37% of BDSX shares. abrdn Healthcare Opportunities is the top mutual fund, with 4.11% of its assets in Biodesix shares.

BDSX Ownership Benchmark

Type	Name	% Inst	% Insiders	% Retail
Stock	Biodesix	6.73%	54.69%	38.58%
Sector	Healthcare Stocks	232.63%	10.66%	-143.29%
Industry	Diagnostics & Research Stocks	35.92%	10.61%	53.47%

Institutional Shareholders

Top Institutional Shareholders by Total Shares

Holder	Shares	% Holding	Value
Telemark asset management	327.82K	4.37%	$2.23M
Birchview capital, lp	286.80K	3.91%	$2.17M
Abrdn	262.43K	3.50%	$1.78M
Vanguard group	192.14K	2.56%	$1.31M
Monashee investment management	112.34K	1.50%	$763.94K
Gsa capital partners llp	64.48K	0.86%	$438.00K
Susquehanna group, llp	1.12M	0.76%	$1.71M
Perkins capital management	44.78K	0.60%	$304.52K
Balyasny asset management	859.52K	0.59%	$242.56K
Geode capital management	42.45K	0.57%	$288.75K

Top Institutional Shareholders by % of Total Assets

Holder	Shares	% Assets	Value
Birchview capital, lp	286.80K	1.63%	$2.17M
Amh equity	651.87K	0.98%	$997.36K
Monashee investment management	112.34K	0.43%	$763.94K
Perkins capital management	44.78K	0.24%	$304.52K
Telemark asset management	327.82K	0.22%	$2.23M
Cvi	38.53K	0.05%	$58.96K
Gsa capital partners llp	64.48K	0.04%	$438.00K
Abrdn	262.43K	0.00%	$1.78M
Drw securities	15.37K	0.00%	$104.53K
Balyasny asset management	859.52K	0.00%	$242.56K

Top Buyers

Holder	Shares	% Assets	Change
Susquehanna group, llp	1.12M	0.00%	987.48K
Balyasny asset management	859.52K	0.00%	859.52K
Abrdn	262.43K	0.00%	262.43K
Goldman sachs group	118.03K	-	118.03K
Cvi	38.53K	0.05%	38.53K

Top Sellers

Holder	Shares	% Assets	Change
Bryn mawr trust	-	-	-6.10M
Birchview capital, lp	286.80K	1.63%	-5.45M
Sio capital management	-	-	-4.34M
Aigh capital management	-	-	-4.27M
Soleus capital management	-	-	-4.04M

New Positions

Holder	Shares	% Assets	Change	Value
Abrdn	262.43K	0.00%	262.43K	$1.78M
Goldman sachs group	118.03K	-	118.03K	$180.59K
Cvi	38.53K	0.05%	38.53K	$58.96K
Drw securities	15.37K	0.00%	15.37K	$104.53K

Sold Out

Holder	Change
Barclays	-1.00
Bnp paribas arbitrage, snc	-6.00
Ubs group	-22.00
Fmr	-27.00
Citigroup	-77.00

Institutional Ownership Trends

Date	Holdings	Change %	Shares	Change %	Ownership	Change %	Increased Position	Change %	Decreased Position	Change %
Dec 31, 2025	5	-81.48%	504,482	-64.86%	6	1.84%	2	-71.43%	1	-95.00%
Sep 30, 2025	1	-97.44%	286,804	-99.19%	3	0.66%	-	-100.00%	1	-90.00%
Jun 30, 2025	40	-34.43%	35,612,550	-33.23%	24	1.83%	14	-41.67%	11	-42.11%
Mar 31, 2025	62	3.33%	53,381,434	-8.98%	36	2.27%	25	-35.90%	20	185.71%
Dec 31, 2024	60	11.11%	58,649,815	-5.74%	40	2.22%	39	50.00%	7	16.67%

Top Mutual Funds Shareholders

Holder	Shares	% Holding	Change
abrdn Healthcare Opportunities	338.95K	4.11%	338.95K
Vanguard Total Stock Mkt Idx Inv	204.10K	2.47%	91.70K
Vanguard US Total Market Shares ETF	1.44M	0.98%	-
Vanguard Institutional Extnd Mkt Idx Tr	43.79K	0.53%	-
Fidelity Extended Market Index	21.59K	0.26%	2.20K
1290 Essex Small Cap Growth I	179.59K	0.12%	1.50K
Pleiades Small Cap Equity A	139.71K	0.10%	-
Blackrock Extended Mkt Fund CF	7.55K	0.09%	7.55K
BlackRock Extended Equity Market K	131.64K	0.09%	131.64K
NT Ext Equity Mkt Idx Fd - L	6.76K	0.08%	2.61K

Recent Insider Transactions

Date	Name	Role	Activity	Value
Feb 23, 2026	Pestano Gary Anthony	Chief Development Officer	Sell	$7.10K
Feb 23, 2026	O'Kane Kieran	Chief Commercial Officer	Sell	$6.83K
Feb 23, 2026	Cowie Robin Harper	CFO, Sec'y & Treasurer	Sell	$6.83K
Feb 23, 2026	Vazquez Chris	Chief Accounting Officer	Sell	$2.70K
Feb 23, 2026	Hutton Scott	President & CEO	Sell	$19.04K

Insider Transactions Trends

Date	Buy	Sell
2026 Q1	3	15
2025 Q4	-	5
2025 Q3	4	5
2025 Q2	2	10
2025 Q1	-	5

BDSX Ownership FAQ

Who Owns Biodesix?

Biodesix shareholders are primarily institutional investors at 6.73%, followed by 54.69% insiders and 38.58% retail investors. The average institutional ownership in Biodesix's industry, Diagnostics & Research Stocks, is 35.92%, which Biodesix falls below.

Who owns the most shares of Biodesix?

Biodesix’s largest shareholders are Telemark asset management (327.82K shares, 4.37%), Birchview capital, lp (286.8K shares, 3.91%), and Abrdn (262.42K shares, 3.50%). Together, they hold 11.78% of Biodesix’s total shares outstanding.

Does Blackrock own Biodesix?

BlackRock is not among the top 10 institutional shareholders of Biodesix.

Who is Biodesix’s biggest shareholder by percentage of total assets invested?

Birchview capital, lp is Biodesix’s biggest shareholder by percentage of total assets invested, with 1.63% of its assets in 286.8K Biodesix shares, valued at 2.17M$.

Who is the top mutual fund holder of Biodesix shares?

abrdn Healthcare Opportunities is the top mutual fund holder of Biodesix shares, with 4.11% of its total shares outstanding invested in 338.95K Biodesix shares.

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