Simplex Trading
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Simplex Trading’s Mirum Pharmaceuticals MIRM Stock Holding History

Simplex Trading’s Portfolio MIRM Stock Details MIRM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$62.6K Buy
535
+232
+77% +$23.3K ﹤0.01% 6066
2026
Q1 		$28K Buy
+303
New +$28.5K ﹤0.01% 6458
2024
Q2 		– Sell
-2,887
Closed -$75.7K – 9411
2024
Q1 		$72K Sell
2,887
-3,140
-52% -$86.3K ﹤0.01% 5932
2023
Q4 		$177K Buy
+6,027
New +$182K ﹤0.01% 4793
2023
Q3 		– Sell
-1,674
Closed -$45.8K – 9370
2023
Q2 		$43K Buy
+1,674
New +$44.5K ﹤0.01% 5993
2023
Q1 		– Sell
-3,098
Closed -$70.6K – 9715
2022
Q4 		$60K Buy
3,098
+2,976
+2,439% +$58.8K ﹤0.01% 5645
2022
Q3 		$2K Buy
+122
New +$2.94K ﹤0.01% 9307
2022
Q1 		– Sell
-1,108
Closed -$22.6K – 11021
2021
Q4 		$17K Buy
+1,108
New +$17.2K ﹤0.01% 8553

Other funds holding MIRM

FLSM
Frazier Life Sciences Management Palo Alto, California $4.59B AUM 237.58% 1-Year Est. Return
JT
Jupiter Topco New York $245B AUM
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
William Blair Investment Management
William Blair Investment Management Chicago, Illinois $33.3B AUM 44.76% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Simplex Trading's MIRM Position: Q2 2026 in Review

Simplex Trading increased its Mirum Pharmaceuticals (MIRM) stake by 77% in Q2 2026, buying an estimated $23.3K and bringing the position to 535 shares worth $62.6K. The position accounts for ﹤0.01% of the portfolio, ranked #6066.

Simplex Trading first reported a position in MIRM in Q4 2021 and has held it in 8 quarters since. The position peaked at $177K in Q4 2023. 327 funds tracked by Wall St. Rank hold MIRM as of Q2 2026.

  • Simplex Trading held 535 shares of Mirum Pharmaceuticals worth $62.6K as of Q2 2026.
  • Simplex Trading bought 232 Mirum Pharmaceuticals shares in Q2 2026, an estimated $23.3K.
  • Mirum Pharmaceuticals made up ﹤0.01% of Simplex Trading's portfolio in Q2 2026, its #6066 holding.
  • Simplex Trading first reported a position in Mirum Pharmaceuticals in Q4 2021 and has held it in 8 quarters since.
  • Simplex Trading's Mirum Pharmaceuticals position peaked at $177K in Q4 2023.
  • 327 funds tracked by Wall St. Rank held Mirum Pharmaceuticals as of Q2 2026.

Based on Simplex Trading's 13F filing for Q2 2026, filed 12 Aug 2026.