Dimensional Fund Advisors
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Dimensional Fund Advisors’s Disc Medicine IRON Stock Holding History

Dimensional Fund Advisors’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
Q3 		$38.7M Buy
590,477
+21,459
+4% +$1.62M 0.01% 1710
2026
Q2 		$41.6M Buy
569,018
+174,571
+44% +$12M 0.01% 1691
2026
Q1 		$25.2M Buy
394,447
+170,872
+76% +$11.9M 0.01% 1862
2025
Q4 		$17.7M Sell
223,575
-6,848
-3% -$579K ﹤0.01% 2031
2025
Q3 		$15.2M Buy
230,423
+37,567
+19% +$2.23M ﹤0.01% 2132
2025
Q2 		$10.2M Buy
192,856
+53,463
+38% +$2.51M ﹤0.01% 2271
2025
Q1 		$6.92M Sell
139,393
-327
-0.2% -$18.2K ﹤0.01% 2392
2024
Q4 		$8.86M Buy
139,720
+86,154
+161% +$4.98M ﹤0.01% 2354
2024
Q3 		$2.63M Buy
+53,566
New +$2.51M ﹤0.01% 2717

Other funds holding IRON

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.84T AUM 33.86% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
Atlas Venture Life Science Advisors
Atlas Venture Life Science Advisors Cambridge, Massachusetts $631M AUM 38.42% 1-Year Est. Return
Assenagon Asset Management
Assenagon Asset Management Senningerberg, Luxembourg $103B AUM 40.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Aberdeen Group
Aberdeen Group Edinburgh, United Kingdom $72.4B AUM 31.32% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
Nuveen
Nuveen Charlotte, North Carolina $420B AUM 34.97% 1-Year Est. Return
Pictet Asset Management
Pictet Asset Management Carouge, Switzerland $106B AUM 32.76% 1-Year Est. Return

Dimensional Fund Advisors's IRON Position: Q3 2026 in Review

Dimensional Fund Advisors increased its Disc Medicine (IRON) stake by 3.8% in Q3 2026, buying an estimated $1.62M and bringing the position to 590,477 shares worth $38.7M. The position accounts for 0.01% of the portfolio, ranked #1710.

Dimensional Fund Advisors first reported a position in IRON in Q3 2024 and has held it in 9 quarters since. The position peaked at $41.6M in Q2 2026. 97 funds tracked by Wall St. Rank hold IRON as of Q3 2026.

  • Dimensional Fund Advisors held 590,477 shares of Disc Medicine worth $38.7M as of Q3 2026.
  • Dimensional Fund Advisors bought 21,459 Disc Medicine shares in Q3 2026, an estimated $1.62M.
  • Disc Medicine made up 0.01% of Dimensional Fund Advisors's portfolio in Q3 2026, its #1710 holding.
  • Dimensional Fund Advisors first reported a position in Disc Medicine in Q3 2024 and has held it in 9 quarters since.
  • Dimensional Fund Advisors's Disc Medicine position peaked at $41.6M in Q2 2026.
  • 97 funds tracked by Wall St. Rank held Disc Medicine as of Q3 2026.

Based on Dimensional Fund Advisors's 13F filing for Q3 2026, filed 4 Nov 2026.