William Blair & Company
BDSX icon

William Blair & Company’s Biodesix BDSX Stock Holding History

William Blair & Company’s Portfolio BDSX Stock Details BDSX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$937K Buy
41,548
+13,965
+51% +$207K ﹤0.01% 1003
2026
Q1 		$400K Buy
+27,583
New +$342K ﹤0.01% 1228
2025
Q3 		– Sell
-7,055
Closed -$39.8K – 1853
2025
Q2 		$39.8K Buy
7,055
+850
+14% +$6.86K ﹤0.01% 1622
2025
Q1 		$77.6K Buy
6,205
+1,550
+33% +$29.8K ﹤0.01% 1531
2024
Q4 		$142K Buy
4,655
+485
+12% +$14.3K ﹤0.01% 1495
2024
Q3 		$148K Hold
4,170
– – ﹤0.01% 1489
2024
Q2 		$128K Buy
4,170
+180
+5% +$5.14K ﹤0.01% 1476
2024
Q1 		$114K Sell
3,990
-500
-11% -$17.1K ﹤0.01% 1492
2023
Q4 		$165K Buy
4,490
+500
+13% +$15.7K ﹤0.01% 1433
2023
Q3 		$132K Buy
3,990
+250
+7% +$6.94K ﹤0.01% 1464
2023
Q2 		$92K Buy
3,740
+1,250
+50% +$37.5K ﹤0.01% 1528
2023
Q1 		$92.6K Buy
2,490
+1,500
+152% +$61.6K ﹤0.01% 1513
2022
Q4 		$45.5K Buy
+990
New +$26.9K ﹤0.01% 1586
2022
Q3 		– Sell
-540
Closed -$18K – 1823
2022
Q2 		$18K Sell
540
-1,772
-77% -$57.6K ﹤0.01% 1736
2022
Q1 		$78K Buy
2,312
+259
+13% +$16.9K ﹤0.01% 1658
2021
Q4 		$217K Sell
2,053
-11
-0.5% -$1.44K ﹤0.01% 1541
2021
Q3 		$339K Sell
2,064
-2,446
-54% -$464K ﹤0.01% 1298
2021
Q2 		$1.19M Buy
4,510
+1,222
+37% +$384K ﹤0.01% 866
2021
Q1 		$1.34M Buy
3,288
+2,463
+299% +$1.1M 0.01% 809
2020
Q4 		$333K Buy
+825
New +$257K ﹤0.01% 1216

Other funds holding BDSX

ACM
AIGH Capital Management Baltimore, Maryland $1.59B AUM 855.46% 1-Year Est. Return
SCM
Soleus Capital Management Greenwich, Connecticut $2.9B AUM 169.69% 1-Year Est. Return
TAM
Telemark Asset Management Boston, Massachusetts $1.38B AUM 71.45% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $71.2B AUM 41.74% 1-Year Est. Return
BC
Birchview Capital Burlington, Vermont $214M AUM 185.33% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
EIM
Essex Investment Management Boston, Massachusetts $763M AUM 108.51% 1-Year Est. Return
OM
Opaleye Management Boston, Massachusetts $1.1B AUM 197.64% 1-Year Est. Return
Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
PA
Perceptive Advisors New York $6.66B AUM 360.84% 1-Year Est. Return

William Blair & Company's BDSX Position: Q2 2026 in Review

William Blair & Company increased its Biodesix (BDSX) stake by 51% in Q2 2026, buying an estimated $207K and bringing the position to 41,548 shares worth $937K. The position accounts for ﹤0.01% of the portfolio, ranked #1003.

William Blair & Company first reported a position in BDSX in Q4 2020 and has held it in 20 quarters since. The position peaked at $1.34M in Q1 2021. 45 funds tracked by Wall St. Rank hold BDSX as of Q2 2026.

  • William Blair & Company held 41,548 shares of Biodesix worth $937K as of Q2 2026.
  • William Blair & Company bought 13,965 Biodesix shares in Q2 2026, an estimated $207K.
  • Biodesix made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1003 holding.
  • William Blair & Company first reported a position in Biodesix in Q4 2020 and has held it in 20 quarters since.
  • William Blair & Company's Biodesix position peaked at $1.34M in Q1 2021.
  • 45 funds tracked by Wall St. Rank held Biodesix as of Q2 2026.

Based on William Blair & Company's 13F filing for Q2 2026, filed 11 Aug 2026.