SCM
BOLD

Sio Capital Management’s Boundless Bio BOLD Stock Holding History

Sio Capital Management’s Portfolio BOLD Stock Details BOLD Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		– Sell
-163,679
Closed -$180K – 91
2026
Q1 		$180K Hold
163,679
– – 0.03% 68
2025
Q4 		$196K Hold
163,679
– – 0.03% 65
2025
Q3 		$201K Hold
163,679
– – 0.05% 46
2025
Q2 		$165K Buy
163,679
+1,621
+1% +$2.15K 0.06% 47
2025
Q1 		$245K Hold
162,058
– – 0.07% 50
2024
Q4 		$470K Hold
162,058
– – 0.13% 43
2024
Q3 		$562K Hold
162,058
– – 0.22% 31
2024
Q2 		$627K Buy
162,058
+19,058
+13% +$182K 0.17% 41
2024
Q1 		$2.04M Buy
+143,000
New +$2.04M 0.61% 37

Other funds holding BOLD

AVM
Arch Venture Management Chicago, Illinois $1.1B AUM 356.62% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return
ACM
ADAR1 Capital Management Austin, Texas $2.19B AUM 374.99% 1-Year Est. Return
CAM
Cormorant Asset Management Boston, Massachusetts $1.95B AUM 773.9% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return
Alyeska Investment Group
Alyeska Investment Group Chicago, Illinois $38.9B AUM 28.51% 1-Year Est. Return

Sio Capital Management's BOLD Position: Q2 2026 in Review

Sio Capital Management sold out of Boundless Bio (BOLD) in Q2 2026, closing a stake of 163,679 shares — an estimated $180K sold.

Sio Capital Management first reported a position in BOLD in Q1 2024 and held it in 9 quarters. The position peaked at $2.04M in Q1 2024. 40 funds tracked by Wall St. Rank hold BOLD as of Q2 2026.

  • Sio Capital Management reported no remaining Boundless Bio position as of Q2 2026 after selling out during the quarter.
  • Sio Capital Management sold 163,679 Boundless Bio shares in Q2 2026, an estimated $180K.
  • Sio Capital Management first reported a position in Boundless Bio in Q1 2024 and held it in 9 quarters.
  • Sio Capital Management's Boundless Bio position peaked at $2.04M in Q1 2024.
  • 40 funds tracked by Wall St. Rank held Boundless Bio as of Q2 2026.

Based on Sio Capital Management's 13F filing for Q2 2026, filed 14 Aug 2026.