Jeff Yass’s Disc Medicine IRON Stock Holding History

Jeff Yass’s Portfolio IRON Stock Details IRON Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$5.38M	Buy	73,600 +36,900	+101%	+$2.54M	﹤0.01%	4468
2026 Q1	$2.35M	Buy	36,700 +12,400	+51%	+$861K	﹤0.01%	5795
2025 Q4	$1.93M	Buy	+24,300	New	+$2.05M	﹤0.01%	5735
2025 Q1	–	Sell	-23,000	Closed	-$1.46M	–	12958
2024 Q4	$1.46M	Buy	23,000 +16,600	+259%	+$960K	﹤0.01%	6014
2024 Q3	$314K	Buy	6,400 +1,700	+36%	+$79.8K	﹤0.01%	9501
2024 Q2	$212K	Sell	4,700 -22,400	-83%	-$761K	﹤0.01%	10238
2024 Q1	$1.69M	Sell	27,100 -23,000	-46%	-$1.49M	﹤0.01%	5730
2023 Q4	$2.89M	Buy	+50,100	New	+$2.57M	﹤0.01%	4645
2023 Q1	–	Sell	-18,500	Closed	-$368K	–	13025
2022 Q4	$368K	Buy	18,500 +17,947	+3,245%	+$894K	﹤0.01%	8616
2022 Q3	$27K	Buy	+553	New	+$26.1K	﹤0.01%	12488
2021 Q4	–	Sell	-2,363	Closed	-$286K	–	13479
2021 Q3	$286K	Buy	+2,363	New	+$323K	﹤0.01%	10708

Other funds holding IRON

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

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

RCM

RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

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

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

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

VPC

Vestal Point Capital New York $4.28B AUM 239% 1-Year Est. Return

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Jeff Yass's IRON Position: Q2 2026 in Review

Jeff Yass reduced its Disc Medicine (IRON) stake by 81% in Q2 2026, selling an estimated $858K and leaving 2,914 shares worth $213K. The position accounts for ﹤0.01% of the portfolio, ranked #11807.

Jeff Yass first reported a position in IRON in Q1 2021 and has held it in 19 quarters since. The position peaked at $4.02M in Q2 2025. 215 funds tracked by Wall St. Rank hold IRON as of Q2 2026.

Jeff Yass held 2,914 shares of Disc Medicine worth $213K as of Q2 2026.
Jeff Yass sold 12,492 Disc Medicine shares in Q2 2026, an estimated $858K.
Disc Medicine made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #11807 holding.
Jeff Yass first reported a position in Disc Medicine in Q1 2021 and has held it in 19 quarters since.
Jeff Yass's Disc Medicine position peaked at $4.02M in Q2 2025.
215 funds tracked by Wall St. Rank held Disc Medicine as of Q2 2026.

Based on Susquehanna International Group's 13F filing for Q2 2026, filed 14 Aug 2026.