JY
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Jeff Yass’s Disc Medicine IRON Stock Holding History

Jeff Yass’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 		$213K Sell
2,914
-12,492
-81% -$858K ﹤0.01% 11807
2026
Q1 		$985K Buy
15,406
+6,097
+65% +$423K ﹤0.01% 7925
2025
Q4 		$739K Sell
9,309
-23,308
-71% -$1.97M ﹤0.01% 7902
2025
Q3 		$2.16M Sell
32,617
-43,380
-57% -$2.58M ﹤0.01% 5615
2025
Q2 		$4.02M Buy
75,997
+5,056
+7% +$237K ﹤0.01% 4381
2025
Q1 		$3.52M Buy
70,941
+42,134
+146% +$2.34M ﹤0.01% 4334
2024
Q4 		$1.83M Buy
28,807
+19,651
+215% +$1.14M ﹤0.01% 5523
2024
Q3 		$450K Sell
9,156
-4,752
-34% -$223K ﹤0.01% 8714
2024
Q2 		$627K Buy
13,908
+1,416
+11% +$48.1K ﹤0.01% 7723
2024
Q1 		$778K Buy
12,492
+5,610
+82% +$364K ﹤0.01% 7469
2023
Q4 		$398K Buy
+6,882
New +$352K ﹤0.01% 9197
2023
Q3 		– Sell
-4,757
Closed -$211K – 12455
2023
Q2 		$211K Sell
4,757
-32,456
-87% -$1.15M ﹤0.01% 10161
2023
Q1 		$789K Buy
+37,213
New +$829K ﹤0.01% 7450
2022
Q3 		– Sell
-967
Closed -$45.6K – 13645
2022
Q2 		$49K Buy
967
+413
+75% +$18.3K ﹤0.01% 11987
2022
Q1 		$23K Sell
554
-985
-64% -$51.6K ﹤0.01% 12581
2021
Q4 		$134K Sell
1,539
-1,805
-54% -$177K ﹤0.01% 11915
2021
Q3 		$405K Buy
3,344
+1,516
+83% +$207K ﹤0.01% 9908
2021
Q2 		$355K Buy
1,828
+383
+27% +$126K ﹤0.01% 10403
2021
Q1 		$588K Buy
+1,445
New +$645K ﹤0.01% 9097

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
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

Jeff Yass's IRON Position: Q2 2026 in Review

Jeff Yass reduced its Disc Medicine (IRON) stake by 81% in Q2 2026, selling an estimated $858K and leaving 2,914 shares worth $213K. The position accounts for ﹤0.01% of the portfolio, ranked #11807.

Jeff Yass first reported a position in IRON in Q1 2021 and has held it in 19 quarters since. The position peaked at $4.02M in Q2 2025. 215 funds tracked by Wall St. Rank hold IRON as of Q2 2026.

  • Jeff Yass held 2,914 shares of Disc Medicine worth $213K as of Q2 2026.
  • Jeff Yass sold 12,492 Disc Medicine shares in Q2 2026, an estimated $858K.
  • Disc Medicine made up ﹤0.01% of Jeff Yass's portfolio in Q2 2026, its #11807 holding.
  • Jeff Yass first reported a position in Disc Medicine in Q1 2021 and has held it in 19 quarters since.
  • Jeff Yass's Disc Medicine position peaked at $4.02M in Q2 2025.
  • 215 funds tracked by Wall St. Rank held Disc Medicine as of Q2 2026.

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