Jane Street’s Definium Therapeutics DFTX Stock Holding History

Jane Street’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	$15.4M	Buy	327,700 +293,200	+850%	+$7.25M	﹤0.01%	2390
2026 Q1	$652K	Sell	34,500 -1,000	-3%	-$17K	﹤0.01%	7417
2025 Q4	$475K	Buy	35,500 +7,200	+25%	+$89.1K	﹤0.01%	7806
2025 Q3	$334K	Buy	+28,300	New	+$264K	﹤0.01%	8697
2024 Q2	–	Sell	-38,400	Closed	-$361K	–	9888
2024 Q1	$361K	Buy	+38,400	New	+$219K	﹤0.01%	7255
2023 Q1	–	Sell	-17,347	Closed	-$38.2K	–	9579
2022 Q4	$38.2K	Sell	17,347 -59,527	-77%	-$165K	﹤0.01%	8447
2022 Q3	$267K	Buy	+76,874	New	+$738K	﹤0.01%	7765
2022 Q2	–	Sell	-1,053	Closed	-$18K	–	10420
2022 Q1	$18K	Sell	1,053 -2,087	-66%	-$36.2K	﹤0.01%	9966
2021 Q4	$65K	Sell	3,140 -4,607	-59%	-$147K	﹤0.01%	9430
2021 Q3	$280K	Buy	+7,747	New	+$335K	﹤0.01%	8324

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

Jane Street's DFTX Position: Q2 2026 in Review

Jane Street sold out of Definium Therapeutics (DFTX) in Q2 2026, closing a stake of 260,241 shares — an estimated $6.43M sold.

Jane Street first reported a position in DFTX in Q2 2021 and held it in 17 quarters. The position peaked at $7.18M in Q4 2025. 362 funds tracked by Wall St. Rank hold DFTX as of Q2 2026.

Jane Street reported no remaining Definium Therapeutics position as of Q2 2026 after selling out during the quarter.
Jane Street sold 260,241 Definium Therapeutics shares in Q2 2026, an estimated $6.43M.
Jane Street first reported a position in Definium Therapeutics in Q2 2021 and held it in 17 quarters.
Jane Street's Definium Therapeutics position peaked at $7.18M in Q4 2025.
362 funds tracked by Wall St. Rank held Definium Therapeutics as of Q2 2026.

Based on Jane Street's 13F filing for Q2 2026, filed 14 Aug 2026.