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 Q2	$29.4K	Buy	624 +575	+1,173%	+$14.2K	﹤0.01%	1351
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 New York $6.73T AUM 46.02% 1-Year Est. Return

ACA

Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return

DCM

Driehaus Capital Management Chicago, Illinois $17.3B AUM 211.34% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Capital International Investors Los Angeles, California $484B AUM 34.9% 1-Year Est. Return

Optiver Holding's DFTX Position: Q2 2026 in Review

Optiver Holding increased its Definium Therapeutics (DFTX) stake by 1,173% in Q2 2026, buying an estimated $14.2K and bringing the position to 624 shares worth $29.4K. The position accounts for ﹤0.01% of the portfolio, ranked #1351.

Optiver Holding first reported a position in DFTX in Q3 2025 and has held it in 4 quarters since. 361 funds tracked by Wall St. Rank hold DFTX as of Q2 2026.

Optiver Holding held 624 shares of Definium Therapeutics worth $29.4K as of Q2 2026.
Optiver Holding bought 575 Definium Therapeutics shares in Q2 2026, an estimated $14.2K.
Definium Therapeutics made up ﹤0.01% of Optiver Holding's portfolio in Q2 2026, its #1351 holding.
Optiver Holding first reported a position in Definium Therapeutics in Q3 2025 and has held it in 4 quarters since.
361 funds tracked by Wall St. Rank held Definium Therapeutics as of Q2 2026.

Based on Optiver Holding's 13F filing for Q2 2026, filed 12 Aug 2026.