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 		$93.7K Buy
800
+100
+14% +$10K ﹤0.01% 5628
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 $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 $3.37T AUM 44.26% 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. 328 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.
  • 328 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.