Vanguard Group
IRON icon

Vanguard Group’s Disc Medicine IRON Stock Holding History

Vanguard Group’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
2025
Q4 		$140M Buy
1,767,680
+319,621
+22% +$27M ﹤0.01% 1718
2025
Q3 		$95.7M Buy
1,448,059
+51,323
+4% +$3.05M ﹤0.01% 1875
2025
Q2 		$74M Buy
1,396,736
+91,690
+7% +$4.31M ﹤0.01% 1950
2025
Q1 		$64.8M Buy
1,305,046
+236,800
+22% +$13.2M ﹤0.01% 1988
2024
Q4 		$67.7M Buy
1,068,246
+18,716
+2% +$1.08M ﹤0.01% 2032
2024
Q3 		$51.6M Sell
1,049,530
-61,894
-6% -$2.91M ﹤0.01% 2168
2024
Q2 		$50.1M Buy
1,111,424
+328,673
+42% +$11.2M ﹤0.01% 2140
2024
Q1 		$48.7M Buy
782,751
+18,207
+2% +$1.18M ﹤0.01% 2176
2023
Q4 		$44.2M Buy
764,544
+99,092
+15% +$5.07M ﹤0.01% 2239
2023
Q3 		$31.3M Buy
665,452
+105,685
+19% +$5.29M ﹤0.01% 2356
2023
Q2 		$24.9M Buy
559,767
+236,898
+73% +$8.41M ﹤0.01% 2502
2023
Q1 		$6.84M Buy
322,869
+267,006
+478% +$5.95M ﹤0.01% 3156
2022
Q4 		$1.11M Buy
55,863
+37,263
+200% +$1.86M ﹤0.01% 3875
2022
Q3 		$915K Sell
18,600
-4,609
-20% -$218K ﹤0.01% 4030
2022
Q2 		$1.18M Sell
23,209
-1,484
-6% -$65.6K ﹤0.01% 4024
2022
Q1 		$1.03M Sell
24,693
-10,929
-31% -$573K ﹤0.01% 4197
2021
Q4 		$3.11M Sell
35,622
-15,844
-31% -$1.55M ﹤0.01% 3863
2021
Q3 		$6.24M Sell
51,466
-6,777
-12% -$926K ﹤0.01% 3516
2021
Q2 		$11.3M Sell
58,243
-3,362
-5% -$1.11M ﹤0.01% 3139
2021
Q1 		$25M Buy
+61,605
New +$27.5M ﹤0.01% 2665

Other funds holding IRON

Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $9.44B AUM 157.3% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.56T AUM 27.86% 1-Year Est. Return
Wellington Management Group
Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $790M AUM 223.66% 1-Year Est. Return
FLSM
Frazier Life Sciences Management Palo Alto, California $3.89B AUM 201.1% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
O
OrbiMed New York $5.05B AUM 125.28% 1-Year Est. Return

Vanguard Group's IRON Position: Q4 2025 in Review

Vanguard Group increased its Disc Medicine (IRON) stake by 22% in Q4 2025, buying an estimated $27M and bringing the position to 1,767,680 shares worth $140M. The position accounts for ﹤0.01% of the portfolio, ranked #1718.

Vanguard Group first reported a position in IRON in Q1 2021 and has held it in 20 quarters since. 196 funds tracked by Wall St. Rank hold IRON as of Q4 2025.

  • Vanguard Group held 1,767,680 shares of Disc Medicine worth $140M as of Q4 2025.
  • Vanguard Group bought 319,621 Disc Medicine shares in Q4 2025, an estimated $27M.
  • Disc Medicine made up ﹤0.01% of Vanguard Group's portfolio in Q4 2025, its #1718 holding.
  • Vanguard Group first reported a position in Disc Medicine in Q1 2021 and has held it in 20 quarters since.
  • 196 funds tracked by Wall St. Rank held Disc Medicine as of Q4 2025.

Based on Vanguard Group's 13F filing for Q4 2025, filed 29 Jan 2026.