Engineers Gate Manager’s Disc Medicine IRON Stock Holding History

Engineers Gate Manager’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	$593K	Buy	9,270 +3,810	+70%	+$264K	0.01%	1315
2025 Q4	$434K	Buy	+5,460	New	+$461K	0.01%	1434
2025 Q2	–	Sell	-16,810	Closed	-$834K	–	2346
2025 Q1	$834K	Buy	16,810 +3,959	+31%	+$220K	0.01%	1167
2024 Q4	$815K	Buy	+12,851	New	+$743K	0.01%	1129
2024 Q2	–	Sell	-4,560	Closed	-$284K	–	2080
2024 Q1	$284K	Sell	4,560 -6,867	-60%	-$445K	0.01%	1489
2023 Q4	$660K	Buy	+11,427	New	+$585K	0.02%	1032
2022 Q1	–	Sell	-334	Closed	-$29K	–	2074
2021 Q4	$29K	Buy	+334	New	+$32.7K	﹤0.01%	1917

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

Engineers Gate Manager's IRON Position: Q1 2026 in Review

Engineers Gate Manager increased its Disc Medicine (IRON) stake by 70% in Q1 2026, buying an estimated $264K and bringing the position to 9,270 shares worth $593K. The position accounts for 0.01% of the portfolio, ranked #1315.

Engineers Gate Manager first reported a position in IRON in Q4 2021 and has held it in 7 quarters since. The position peaked at $834K in Q1 2025. 203 funds tracked by Wall St. Rank hold IRON as of Q1 2026.

Engineers Gate Manager held 9,270 shares of Disc Medicine worth $593K as of Q1 2026.
Engineers Gate Manager bought 3,810 Disc Medicine shares in Q1 2026, an estimated $264K.
Disc Medicine made up 0.01% of Engineers Gate Manager's portfolio in Q1 2026, its #1315 holding.
Engineers Gate Manager first reported a position in Disc Medicine in Q4 2021 and has held it in 7 quarters since.
Engineers Gate Manager's Disc Medicine position peaked at $834K in Q1 2025.
203 funds tracked by Wall St. Rank held Disc Medicine as of Q1 2026.

Based on Engineers Gate Manager's 13F filing for Q1 2026, filed 15 May 2026.