William Blair & Company
ONCY

William Blair & Company’s Oncolytics Biotech ONCY Stock Holding History

William Blair & Company’s Portfolio ONCY Stock Details ONCY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$14.4K Buy
+15,201
New +$14.1K ﹤0.01% 1888
2026
Q1 		– Sell
-31,467
Closed -$27.5K – 1986
2025
Q4 		$27.5K Buy
+31,467
New +$34K ﹤0.01% 1703

Other funds holding ONCY

Marshall Wace
Marshall Wace London, United Kingdom $127B AUM 46.06% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return
SI
Seeds Investor New York $973M AUM 33.7% 1-Year Est. Return
IAIM
International Assets Investment Management Orlando, Florida $1.67B AUM 28.26% 1-Year Est. Return
CCM
Connective Capital Management Palo Alto, California $142M AUM 51.29% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $1.15T AUM 47.82% 1-Year Est. Return
TAM
Tocqueville Asset Management New York $7.56B AUM 44.87% 1-Year Est. Return
EFG
Everhart Financial Group Dublin, Ohio $1.56B AUM 34.29% 1-Year Est. Return
Susquehanna International Group
Susquehanna International Group Bala Cynwyd, Pennsylvania $1.28T AUM 58.89% 1-Year Est. Return
PI
PFG Investments Woodbury, New York $2.58B AUM 36.93% 1-Year Est. Return

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

William Blair & Company opened a new position in Oncolytics Biotech (ONCY) in Q2 2026: 15,201 shares worth $14.4K. The stake represents ﹤0.01% of the portfolio and ranks #1888 among its holdings. This is a return to the name: William Blair & Company previously reported a position in ONCY as recently as Q4 2025.

William Blair & Company first reported a position in ONCY in Q4 2025 and has held it in 2 quarters since. The position peaked at $27.5K in Q4 2025. 76 funds tracked by Wall St. Rank hold ONCY as of Q2 2026.

  • William Blair & Company held 15,201 shares of Oncolytics Biotech worth $14.4K as of Q2 2026.
  • Oncolytics Biotech was a new William Blair & Company position in Q2 2026.
  • Oncolytics Biotech made up ﹤0.01% of William Blair & Company's portfolio in Q2 2026, its #1888 holding.
  • William Blair & Company first reported a position in Oncolytics Biotech in Q4 2025 and has held it in 2 quarters since.
  • William Blair & Company's Oncolytics Biotech position peaked at $27.5K in Q4 2025.
  • 76 funds tracked by Wall St. Rank held Oncolytics Biotech as of Q2 2026.

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