AC
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Aaron Cowen’s Disc Medicine IRON Stock Holding History

Aaron Cowen’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
Q2 		– Sell
-80,000
Closed -$3.97M – 102
2025
Q1 		$3.97M Buy
+80,000
New +$4.45M 0.15% 66
2022
Q4 		– Sell
-79,076
Closed -$3.89M – 95
2022
Q3 		$3.89M Hold
79,076
– – 0.16% 60
2022
Q2 		$4.01M Hold
79,076
– – 0.15% 68
2022
Q1 		$3.3M Hold
79,076
– – 0.1% 69
2021
Q4 		$6.9M Buy
79,076
+7,815
+11% +$766K 0.13% 68
2021
Q3 		$8.64M Buy
71,261
+94
+0.1% +$12.8K 0.15% 68
2021
Q2 		$13.8M Buy
71,167
+27,422
+63% +$9.02M 0.21% 71
2021
Q1 		$17.8M Buy
+43,745
New +$19.5M 0.26% 62

Other funds holding IRON

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
AVLSA
Atlas Venture Life Science Advisors Cambridge, Massachusetts $881M AUM 160.77% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
FLSM
Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return
RCM
RA Capital Management Boston, Massachusetts $11.5B AUM 168.77% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London $209B AUM 37.72% 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
O
OrbiMed New York $5.4B AUM 163.13% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

Aaron Cowen's IRON Position: Q2 2025 in Review

Aaron Cowen sold out of Disc Medicine (IRON) in Q2 2025, closing a stake of 80,000 shares — an estimated $3.97M sold.

Aaron Cowen first reported a position in IRON in Q1 2021 and held it in 8 quarters. The position peaked at $17.8M in Q1 2021. 151 funds tracked by Wall St. Rank hold IRON as of Q2 2025.

  • Aaron Cowen reported no remaining Disc Medicine position as of Q2 2025 after selling out during the quarter.
  • Aaron Cowen sold 80,000 Disc Medicine shares in Q2 2025, an estimated $3.97M.
  • Aaron Cowen first reported a position in Disc Medicine in Q1 2021 and held it in 8 quarters.
  • Aaron Cowen's Disc Medicine position peaked at $17.8M in Q1 2021.
  • 151 funds tracked by Wall St. Rank held Disc Medicine as of Q2 2025.

Based on Suvretta Capital Management's 13F filing for Q2 2025, filed 14 Aug 2025.