California State Teachers Retirement System (CalSTRS)
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California State Teachers Retirement System (CalSTRS)’s Disc Medicine IRON Stock Holding History

California State Teachers Retirement System (CalSTRS)’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 		$2.88M Buy
39,360
+4,978
+14% +$342K ﹤0.01% 1420
2026
Q1 		$2.2M Buy
34,382
+11,126
+48% +$772K ﹤0.01% 1465
2025
Q4 		$1.85M Buy
23,256
+1,163
+5% +$98.3K ﹤0.01% 1457
2025
Q3 		$1.46M Buy
22,093
+1,843
+9% +$110K ﹤0.01% 1585
2025
Q2 		$1.07M Buy
20,250
+98
+0.5% +$4.6K ﹤0.01% 1697
2025
Q1 		$1M Buy
20,152
+4,621
+30% +$257K ﹤0.01% 1701
2024
Q4 		$985K Sell
15,531
-1,436
-8% -$83.1K ﹤0.01% 1786
2024
Q3 		$834K Buy
16,967
+1,019
+6% +$47.8K ﹤0.01% 1886
2024
Q2 		$719K Buy
15,948
+4,148
+35% +$141K ﹤0.01% 1915
2024
Q1 		$735K Buy
11,800
+3,200
+37% +$207K ﹤0.01% 1966
2023
Q4 		$497K Sell
8,600
-360
-4% -$18.4K ﹤0.01% 2218
2023
Q3 		$421K Buy
8,960
+6,387
+248% +$319K ﹤0.01% 2288
2023
Q2 		$114K Buy
+2,573
New +$91.3K ﹤0.01% 2621
2022
Q2 		– Sell
-323
Closed -$13K – 3227
2022
Q1 		$13K Sell
323
-40
-11% -$2.1K ﹤0.01% 3186
2021
Q4 		$32K Sell
363
-118
-25% -$11.6K ﹤0.01% 3210
2021
Q3 		$58K Sell
481
-527
-52% -$72K ﹤0.01% 3099
2021
Q2 		$196K Buy
+1,008
New +$331K ﹤0.01% 2992

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

California State Teachers Retirement System (CalSTRS)'s IRON Position: Q2 2026 in Review

California State Teachers Retirement System (CalSTRS) increased its Disc Medicine (IRON) stake by 14% in Q2 2026, buying an estimated $342K and bringing the position to 39,360 shares worth $2.88M. The position accounts for ﹤0.01% of the portfolio, ranked #1420.

California State Teachers Retirement System (CalSTRS) first reported a position in IRON in Q2 2021 and has held it in 17 quarters since. 216 funds tracked by Wall St. Rank hold IRON as of Q2 2026.

  • California State Teachers Retirement System (CalSTRS) held 39,360 shares of Disc Medicine worth $2.88M as of Q2 2026.
  • California State Teachers Retirement System (CalSTRS) bought 4,978 Disc Medicine shares in Q2 2026, an estimated $342K.
  • Disc Medicine made up ﹤0.01% of California State Teachers Retirement System (CalSTRS)'s portfolio in Q2 2026, its #1420 holding.
  • California State Teachers Retirement System (CalSTRS) first reported a position in Disc Medicine in Q2 2021 and has held it in 17 quarters since.
  • 216 funds tracked by Wall St. Rank held Disc Medicine as of Q2 2026.

Based on California State Teachers Retirement System (CalSTRS)'s 13F filing for Q2 2026, filed 24 Aug 2026.