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 		$64.7K Sell
700
-6,200
-90% -$583K ﹤0.01% 5579
2025
Q4 		$545K Sell
6,900
-2,300
-25% -$165K ﹤0.01% 3222
2025
Q3 		$674K Buy
9,200
+6,300
+217% +$400K ﹤0.01% 3475
2025
Q2 		$147K Sell
2,900
-200
-6% -$8.9K ﹤0.01% 4826
2025
Q1 		$139K Sell
3,100
-9,000
-74% -$424K ﹤0.01% 4710
2024
Q4 		$500K Sell
12,100
-6,500
-35% -$271K ﹤0.01% 3538
2024
Q3 		$725K Buy
18,600
+2,100
+13% +$83.8K ﹤0.01% 3226
2024
Q2 		$564K Buy
16,500
+11,700
+244% +$307K ﹤0.01% 3541
2024
Q1 		$120K Buy
4,800
+1,100
+30% +$30.2K ﹤0.01% 5407
2023
Q4 		$109K Sell
3,700
-5,000
-57% -$151K ﹤0.01% 5289
2023
Q3 		$274K Buy
8,700
+6,800
+358% +$186K ﹤0.01% 4023
2023
Q2 		$49K Sell
1,900
-1,500
-44% -$39.9K ﹤0.01% 5870
2023
Q1 		$81K Buy
3,400
+3,300
+3,300% +$75.2K ﹤0.01% 5401
2022
Q4 		$1K Sell
100
-100
-50% -$1.98K ﹤0.01% 8864
2022
Q3 		$4K Hold
200
– – ﹤0.01% 8933
2022
Q2 		$3K Sell
200
-1,600
-89% -$37.7K ﹤0.01% 9166
2022
Q1 		$39K Buy
1,800
+600
+50% +$12.2K ﹤0.01% 7473
2021
Q4 		$19K Buy
+1,200
New +$18.7K ﹤0.01% 8415

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.