Caption Management’s Disc Medicine IRON Stock Holding History

Caption Management’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 Q1	$19.2M	Buy	+300,000	New	+$20.8M	0.11%	196
2025 Q4	–	Sell	-7,600	Closed	-$502K	–	1829
2025 Q3	$502K	Sell	7,600 -418,700	-98%	-$24.9M	﹤0.01%	1298
2025 Q2	$22.6M	Buy	426,300 +407,200	+2,132%	+$19.1M	0.25%	78
2025 Q1	$948K	Buy	+19,100	New	+$1.06M	0.01%	940
2024 Q3	–	Sell	-22,500	Closed	-$1.01M	–	1449
2024 Q2	$1.01M	Sell	22,500 -15,000	-40%	-$510K	0.02%	656
2024 Q1	$2.33M	Sell	37,500 -58,400	-61%	-$3.79M	0.04%	494
2023 Q4	$5.54M	Buy	95,900 +57,700	+151%	+$2.95M	0.07%	300
2023 Q3	$1.79M	Buy	+38,200	New	+$1.91M	0.03%	610
2021 Q3	–	Sell	-12,830	Closed	-$2.49M	–	1640
2021 Q2	$2.49M	Buy	12,830 +647	+5%	+$213K	0.03%	607
2021 Q1	$4.96M	Buy	+12,183	New	+$5.43M	0.11%	248

Other funds holding IRON

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

RCM

RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return

AVLSA

Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

FLSM

Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return

TCM

TCG Crossover Management Palo Alto, California $3.5B AUM 1,165.83% 1-Year Est. Return

Caption Management's IRON Position: Q1 2024 in Review

Caption Management sold out of Disc Medicine (IRON) in Q1 2024, closing a stake of 43,000 shares — an estimated $2.79M sold.

Caption Management first reported a position in IRON in Q2 2021 and held it in 2 quarters. The position peaked at $2.48M in Q4 2023. 130 funds tracked by Wall St. Rank hold IRON as of Q1 2024.

Caption Management reported no remaining Disc Medicine position as of Q1 2024 after selling out during the quarter.
Caption Management sold 43,000 Disc Medicine shares in Q1 2024, an estimated $2.79M.
Caption Management first reported a position in Disc Medicine in Q2 2021 and held it in 2 quarters.
Caption Management's Disc Medicine position peaked at $2.48M in Q4 2023.
130 funds tracked by Wall St. Rank held Disc Medicine as of Q1 2024.

Based on Caption Management's 13F filing for Q1 2024, filed 15 May 2024.