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BlackRock’s Disc Medicine IRON Stock Holding History

BlackRock’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 		$181M Buy
2,467,899
+194,068
+9% +$13.3M ﹤0.01% 1857
2026
Q1 		$145M Sell
2,273,831
-1,149
-0.1% -$79.7K ﹤0.01% 1876
2025
Q4 		$181M Buy
2,274,980
+255,697
+13% +$21.6M ﹤0.01% 1749
2025
Q3 		$133M Sell
2,019,283
-25,544
-1% -$1.52M ﹤0.01% 1920
2025
Q2 		$108M Sell
2,044,827
-49,733
-2% -$2.34M ﹤0.01% 1992
2025
Q1 		$104M Buy
2,094,560
+234,828
+13% +$13.1M ﹤0.01% 1969
2024
Q4 		$118M Buy
1,859,732
+8,579
+0.5% +$496K ﹤0.01% 1980
2024
Q3 		$91M Buy
1,851,153
+413,611
+29% +$19.4M ﹤0.01% 2146
2024
Q2 		$64.8M Buy
1,437,542
+535,947
+59% +$18.2M ﹤0.01% 2268
2024
Q1 		$56.1M Buy
901,595
+33,155
+4% +$2.15M ﹤0.01% 2371
2023
Q4 		$50.2M Buy
868,440
+224,109
+35% +$11.5M ﹤0.01% 2470
2023
Q3 		$30.3M Buy
644,331
+141,782
+28% +$7.09M ﹤0.01% 2701
2023
Q2 		$22.3M Buy
502,549
+479,082
+2,042% +$17M ﹤0.01% 2975
2023
Q1 		$497K Buy
23,467
+3,385
+17% +$75.4K ﹤0.01% 4530
2022
Q4 		$399K Buy
20,082
+13,397
+200% +$667K ﹤0.01% 4668
2022
Q3 		$330K Sell
6,685
-449
-6% -$21.2K ﹤0.01% 4839
2022
Q2 		$361K Sell
7,134
-36,206
-84% -$1.6M ﹤0.01% 4874
2022
Q1 		$1.81M Buy
43,340
+1,461
+3% +$76.6K ﹤0.01% 4437
2021
Q4 		$3.66M Buy
41,879
+241
+0.6% +$23.6K ﹤0.01% 4134
2021
Q3 		$5.05M Sell
41,638
-282
-0.7% -$38.5K ﹤0.01% 3953
2021
Q2 		$8.14M Buy
41,920
+33,877
+421% +$11.1M ﹤0.01% 3715
2021
Q1 		$3.27M Buy
+8,043
New +$3.59M ﹤0.01% 4127

Other funds holding IRON

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return
State Street
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
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
FLSM
Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return

BlackRock's IRON Position: Q2 2026 in Review

BlackRock increased its Disc Medicine (IRON) stake by 8.5% in Q2 2026, buying an estimated $13.3M and bringing the position to 2,467,899 shares worth $181M. The position accounts for ﹤0.01% of the portfolio, ranked #1857.

BlackRock first reported a position in IRON in Q1 2021 and has held it in 22 quarters since. The position peaked at $181M in Q4 2025. 215 funds tracked by Wall St. Rank hold IRON as of Q2 2026.

  • BlackRock held 2,467,899 shares of Disc Medicine worth $181M as of Q2 2026.
  • BlackRock bought 194,068 Disc Medicine shares in Q2 2026, an estimated $13.3M.
  • Disc Medicine made up ﹤0.01% of BlackRock's portfolio in Q2 2026, its #1857 holding.
  • BlackRock first reported a position in Disc Medicine in Q1 2021 and has held it in 22 quarters since.
  • BlackRock's Disc Medicine position peaked at $181M in Q4 2025.
  • 215 funds tracked by Wall St. Rank held Disc Medicine as of Q2 2026.

Based on BlackRock's 13F filing for Q2 2026, filed 7 Aug 2026.