Optiver Holding
DFTX

Optiver Holding’s Definium Therapeutics DFTX Stock Holding History

Optiver Holding’s Portfolio DFTX Stock Details DFTX Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$926 Sell
49
-74
-60% -$1.26K ﹤0.01% 2071
2025
Q4 		$1.65K Sell
123
-95
-44% -$1.18K ﹤0.01% 2097
2025
Q3 		$2.57K Buy
+218
New +$2.03K ﹤0.01% 2270

Other funds holding DFTX

BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
DCM
Driehaus Capital Management Chicago, Illinois $13.6B AUM 173.98% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $10.2B AUM 149.19% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
DTC
Deep Track Capital Greenwich, Connecticut $6.12B AUM 144% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
OCA
Octagon Capital Advisors New York $904M AUM 737.04% 1-Year Est. Return
CC
Commodore Capital New York $1.73B AUM 298.96% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Optiver Holding's DFTX Position: Q1 2026 in Review

Optiver Holding reduced its Definium Therapeutics (DFTX) stake by 60% in Q1 2026, selling an estimated $1.26K and leaving 49 shares worth $926. The position accounts for ﹤0.01% of the portfolio, ranked #2071.

Optiver Holding first reported a position in DFTX in Q3 2025 and has held it in 3 quarters since. The position peaked at $2.57K in Q3 2025. 247 funds tracked by Wall St. Rank hold DFTX as of Q1 2026.

  • Optiver Holding held 49 shares of Definium Therapeutics worth $926 as of Q1 2026.
  • Optiver Holding sold 74 Definium Therapeutics shares in Q1 2026, an estimated $1.26K.
  • Definium Therapeutics made up ﹤0.01% of Optiver Holding's portfolio in Q1 2026, its #2071 holding.
  • Optiver Holding first reported a position in Definium Therapeutics in Q3 2025 and has held it in 3 quarters since.
  • Optiver Holding's Definium Therapeutics position peaked at $2.57K in Q3 2025.
  • 247 funds tracked by Wall St. Rank held Definium Therapeutics as of Q1 2026.

Based on Optiver Holding's 13F filing for Q1 2026, filed 15 May 2026.