Citadel Advisors
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Citadel Advisors’s Disc Medicine IRON Stock Holding History

Citadel Advisors’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 		$786K Buy
+12,300
New +$854K ﹤0.01% 8228
2025
Q2 		– Sell
-900
Closed -$44.7K – 13768
2025
Q1 		$44.7K Sell
900
-11,800
-93% -$656K ﹤0.01% 12428
2024
Q4 		$805K Buy
12,700
+11,700
+1,170% +$677K ﹤0.01% 7494
2024
Q3 		$49.1K Sell
1,000
-4,900
-83% -$230K ﹤0.01% 11935
2024
Q2 		$266K Sell
5,900
-41,300
-88% -$1.4M ﹤0.01% 9377
2024
Q1 		$2.94M Buy
47,200
+31,100
+193% +$2.02M ﹤0.01% 4827
2023
Q4 		$930K Buy
+16,100
New +$824K ﹤0.01% 6817
2023
Q1 		– Sell
-970
Closed -$19.3K – 15086
2022
Q4 		$19.3K Buy
970
+583
+151% +$29K ﹤0.01% 13181
2022
Q3 		$19K Sell
387
-373
-49% -$17.6K ﹤0.01% 12090
2022
Q2 		$39K Buy
760
+110
+17% +$4.87K ﹤0.01% 12075
2022
Q1 		$27K Sell
650
-1,217
-65% -$63.8K ﹤0.01% 13150
2021
Q4 		$163K Buy
1,867
+794
+74% +$77.8K ﹤0.01% 12157
2021
Q3 		$130K Sell
1,073
-1,424
-57% -$195K ﹤0.01% 12549
2021
Q2 		$485K Buy
2,497
+2,074
+490% +$682K ﹤0.01% 10120
2021
Q1 		$172K Buy
+423
New +$189K ﹤0.01% 11894

Other funds holding IRON

Fidelity Investments
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
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
T. Rowe Price Associates
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

Citadel Advisors's IRON Position: Q1 2026 in Review

Citadel Advisors reduced its Disc Medicine (IRON) stake by 2.5% in Q1 2026, selling an estimated $171K and leaving 97,930 shares worth $6.26M. The position accounts for ﹤0.01% of the portfolio, ranked #3982.

Citadel Advisors first reported a position in IRON in Q1 2021 and has held it in 20 quarters since. The position peaked at $37.5M in Q4 2024. 203 funds tracked by Wall St. Rank hold IRON as of Q1 2026.

  • Citadel Advisors held 97,930 shares of Disc Medicine worth $6.26M as of Q1 2026.
  • Citadel Advisors sold 2,465 Disc Medicine shares in Q1 2026, an estimated $171K.
  • Disc Medicine made up ﹤0.01% of Citadel Advisors's portfolio in Q1 2026, its #3982 holding.
  • Citadel Advisors first reported a position in Disc Medicine in Q1 2021 and has held it in 20 quarters since.
  • Citadel Advisors's Disc Medicine position peaked at $37.5M in Q4 2024.
  • 203 funds tracked by Wall St. Rank held Disc Medicine as of Q1 2026.

Based on Citadel Advisors's 13F filing for Q1 2026, filed 15 May 2026.