Saturn V Capital Management’s Disc Medicine IRON Stock Holding History

Saturn V Capital 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	$28.8M	Buy	449,926 +151,497	+51%	+$10.5M	5.21%	9
2025 Q4	$23.7M	Sell	298,429 -42,468	-12%	-$3.59M	4.35%	10
2025 Q3	$22.5M	Sell	340,897 -55,218	-14%	-$3.28M	4.94%	9
2025 Q2	$21M	Sell	396,115 -122,062	-24%	-$5.73M	8.5%	2
2025 Q1	$25.7M	Buy	518,177 +8,771	+2%	+$488K	12.98%	2
2024 Q4	$32.3M	Sell	509,406 -1,635	-0.3%	-$94.6K	12.65%	1
2024 Q3	$25.1M	Buy	511,041 +7,952	+2%	+$373K	8.98%	2
2024 Q2	$22.7M	Buy	503,089 +248,286	+97%	+$8.44M	8.57%	2
2024 Q1	$15.9M	Buy	254,803 +190,019	+293%	+$12.3M	6.36%	6
2023 Q4	$3.74M	Buy	+64,784	New	+$3.32M	1.43%	18

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

Saturn V Capital Management's IRON Position: Q1 2026 in Review

Saturn V Capital Management increased its Disc Medicine (IRON) stake by 51% in Q1 2026, buying an estimated $10.5M and bringing the position to 449,926 shares worth $28.8M. The position accounts for 5.21% of the portfolio, ranked #9.

Saturn V Capital Management first reported a position in IRON in Q4 2023 and has held it in 10 quarters since. The position peaked at $32.3M in Q4 2024. 203 funds tracked by Wall St. Rank hold IRON as of Q1 2026.

Saturn V Capital Management held 449,926 shares of Disc Medicine worth $28.8M as of Q1 2026.
Saturn V Capital Management bought 151,497 Disc Medicine shares in Q1 2026, an estimated $10.5M.
Disc Medicine made up 5.21% of Saturn V Capital Management's portfolio in Q1 2026, its #9 holding.
Saturn V Capital Management first reported a position in Disc Medicine in Q4 2023 and has held it in 10 quarters since.
Saturn V Capital Management's Disc Medicine position peaked at $32.3M in Q4 2024.
203 funds tracked by Wall St. Rank held Disc Medicine as of Q1 2026.

Based on Saturn V Capital Management's 13F filing for Q1 2026, filed 15 May 2026.