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
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 $3.89B AUM 201.1% 1-Year Est. Return
Janus Henderson Group
Janus Henderson Group London, United Kingdom $209B AUM 37.72% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $865B AUM 30.76% 1-Year Est. Return
BI
BVF Inc San Francisco, California $3.14B AUM 249.53% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
EAM
Eventide Asset Management Boston, Massachusetts $6.05B AUM 76.64% 1-Year Est. Return

Simplex Trading's MIRM Position: Q1 2026 in Review

Simplex Trading opened a new position in Mirum Pharmaceuticals (MIRM) in Q1 2026: 303 shares worth $28K. The stake represents ﹤0.01% of the portfolio and ranks #6458 among its holdings. This is a return to the name: Simplex Trading previously reported a position in MIRM as recently as Q1 2024.

Simplex Trading first reported a position in MIRM in Q4 2021 and has held it in 7 quarters since. The position peaked at $177K in Q4 2023. 311 funds tracked by Wall St. Rank hold MIRM as of Q1 2026.

  • Simplex Trading held 303 shares of Mirum Pharmaceuticals worth $28K as of Q1 2026.
  • Mirum Pharmaceuticals was a new Simplex Trading position in Q1 2026.
  • Mirum Pharmaceuticals made up ﹤0.01% of Simplex Trading's portfolio in Q1 2026, its #6458 holding.
  • Simplex Trading first reported a position in Mirum Pharmaceuticals in Q4 2021 and has held it in 7 quarters since.
  • Simplex Trading's Mirum Pharmaceuticals position peaked at $177K in Q4 2023.
  • 311 funds tracked by Wall St. Rank held Mirum Pharmaceuticals as of Q1 2026.

Based on Simplex Trading's 13F filing for Q1 2026, filed 14 May 2026.