Wellington Management Group
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Wellington Management Group’s Disc Medicine IRON Stock Holding History

Wellington Management 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
2026
Q2 		$127M Buy
1,741,351
+5,975
+0.3% +$411K 0.02% 487
2026
Q1 		$111M Buy
1,735,376
+217,102
+14% +$15.1M 0.02% 523
2025
Q4 		$121M Buy
1,518,274
+108,197
+8% +$9.14M 0.02% 507
2025
Q3 		$93.2M Sell
1,410,077
-22,013
-2% -$1.31M 0.02% 573
2025
Q2 		$75.8M Sell
1,432,090
-911,409
-39% -$42.8M 0.01% 596
2025
Q1 		$116M Buy
2,343,499
+948,094
+68% +$52.7M 0.02% 471
2024
Q4 		$88.5M Sell
1,395,405
-444,821
-24% -$25.7M 0.02% 561
2024
Q3 		$90.4M Buy
1,840,226
+83,731
+5% +$3.93M 0.02% 561
2024
Q2 		$79.2M Buy
1,756,495
+1,086,013
+162% +$36.9M 0.01% 593
2024
Q1 		$41.7M Buy
670,482
+492,756
+277% +$31.9M 0.01% 755
2023
Q4 		$10.3M Buy
177,726
+122,981
+225% +$6.3M ﹤0.01% 1109
2023
Q3 		$2.57M Buy
54,745
+11,475
+27% +$574K ﹤0.01% 1427
2023
Q2 		$1.92M Buy
+43,270
New +$1.54M ﹤0.01% 1484
2021
Q3 		– Sell
-23,333
Closed -$4.53M – 2205
2021
Q2 		$4.53M Sell
23,333
-25,999
-53% -$8.55M ﹤0.01% 1529
2021
Q1 		$19.7M Buy
+49,332
New +$22M ﹤0.01% 1080

Other funds holding IRON

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 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
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

Wellington Management Group's IRON Position: Q2 2026 in Review

Wellington Management Group increased its Disc Medicine (IRON) stake by 0.34% in Q2 2026, buying an estimated $411K and bringing the position to 1,741,351 shares worth $127M. The position accounts for 0.02% of the portfolio, ranked #487.

Wellington Management Group first reported a position in IRON in Q1 2021 and has held it in 15 quarters since. 216 funds tracked by Wall St. Rank hold IRON as of Q2 2026.

  • Wellington Management Group held 1,741,351 shares of Disc Medicine worth $127M as of Q2 2026.
  • Wellington Management Group bought 5,975 Disc Medicine shares in Q2 2026, an estimated $411K.
  • Disc Medicine made up 0.02% of Wellington Management Group's portfolio in Q2 2026, its #487 holding.
  • Wellington Management Group first reported a position in Disc Medicine in Q1 2021 and has held it in 15 quarters since.
  • 216 funds tracked by Wall St. Rank held Disc Medicine as of Q2 2026.

Based on Wellington Management Group's 13F filing for Q2 2026, filed 14 Aug 2026.