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John Overdeck’s Disc Medicine IRON Stock Holding History

John Overdeck’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 		$10M Buy
+136,750
New +$9.4M 0.01% 1525
2024
Q2 		– Sell
-14,711
Closed -$916K – 3176
2024
Q1 		$916K Sell
14,711
-8,383
-36% -$544K ﹤0.01% 2003
2023
Q4 		$1.33M Buy
23,094
+13,794
+148% +$706K ﹤0.01% 1898
2023
Q3 		$437K Sell
9,300
-30,961
-77% -$1.55M ﹤0.01% 2334
2023
Q2 		$1.79M Buy
40,261
+16,111
+67% +$572K ﹤0.01% 1514
2023
Q1 		$512K Buy
+24,150
New +$538K ﹤0.01% 2192
2021
Q4 		– Sell
-1,316
Closed -$160K – 4556
2021
Q3 		$160K Buy
1,316
+839
+176% +$115K ﹤0.01% 4011
2021
Q2 		$93K Buy
+477
New +$157K ﹤0.01% 3907

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

John Overdeck's IRON Position: Q2 2026 in Review

John Overdeck opened a new position in Disc Medicine (IRON) in Q2 2026: 136,750 shares worth $10M. The stake represents 0.01% of the portfolio and ranks #1525 among its holdings. This is a return to the name: John Overdeck previously reported a position in IRON as recently as Q1 2024.

John Overdeck first reported a position in IRON in Q2 2021 and has held it in 8 quarters since. 215 funds tracked by Wall St. Rank hold IRON as of Q2 2026.

  • John Overdeck held 136,750 shares of Disc Medicine worth $10M as of Q2 2026.
  • Disc Medicine was a new John Overdeck position in Q2 2026.
  • Disc Medicine made up 0.01% of John Overdeck's portfolio in Q2 2026, its #1525 holding.
  • John Overdeck first reported a position in Disc Medicine in Q2 2021 and has held it in 8 quarters since.
  • 215 funds tracked by Wall St. Rank held Disc Medicine as of Q2 2026.

Based on Two Sigma Investments's 13F filing for Q2 2026, filed 14 Aug 2026.