Wellington Management Group
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Wellington Management Group’s Mirum Pharmaceuticals MIRM Stock Holding History

Wellington Management Group’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 		$123M Buy
1,334,809
+96,979
+8% +$9.12M 0.02% 494
2025
Q4 		$97.8M Buy
1,237,830
+447,141
+57% +$32.1M 0.02% 553
2025
Q3 		$58M Buy
790,689
+672,118
+567% +$42.7M 0.01% 687
2025
Q2 		$6.03M Buy
118,571
+5,647
+5% +$251K ﹤0.01% 1345
2025
Q1 		$5.09M Sell
112,924
-5,277
-4% -$249K ﹤0.01% 1369
2024
Q4 		$4.89M Sell
118,201
-4,133
-3% -$172K ﹤0.01% 1356
2024
Q3 		$4.77M Buy
122,334
+46,918
+62% +$1.87M ﹤0.01% 1341
2024
Q2 		$2.58M Buy
75,416
+4,974
+7% +$130K ﹤0.01% 1463
2024
Q1 		$1.77M Buy
+70,442
New +$1.94M ﹤0.01% 1545
2023
Q2 		– Sell
-154,750
Closed -$3.72M – 1931
2023
Q1 		$3.72M Buy
154,750
+98
+0.1% +$2.23K ﹤0.01% 1355
2022
Q4 		$3.02M Sell
154,652
-10,746
-6% -$212K ﹤0.01% 1403
2022
Q3 		$3.48M Sell
165,398
-12,098
-7% -$291K ﹤0.01% 1380
2022
Q2 		$3.45M Hold
177,496
– – ﹤0.01% 1419
2022
Q1 		$3.91M Sell
177,496
-715
-0.4% -$14.6K ﹤0.01% 1444
2021
Q4 		$2.84M Sell
178,211
-186,489
-51% -$2.9M ﹤0.01% 1594
2021
Q3 		$7.26M Buy
364,700
+18,700
+5% +$304K ﹤0.01% 1390
2021
Q2 		$5.98M Buy
346,000
+238,300
+221% +$4.27M ﹤0.01% 1454
2021
Q1 		$2.13M Buy
107,700
+22,300
+26% +$427K ﹤0.01% 1614
2020
Q4 		$1.49M Buy
+85,400
New +$1.68M ﹤0.01% 1541

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

Wellington Management Group's MIRM Position: Q1 2026 in Review

Wellington Management Group increased its Mirum Pharmaceuticals (MIRM) stake by 7.8% in Q1 2026, buying an estimated $9.12M and bringing the position to 1,334,809 shares worth $123M. The position accounts for 0.02% of the portfolio, ranked #494.

Wellington Management Group first reported a position in MIRM in Q4 2020 and has held it in 19 quarters since. 311 funds tracked by Wall St. Rank hold MIRM as of Q1 2026.

  • Wellington Management Group held 1,334,809 shares of Mirum Pharmaceuticals worth $123M as of Q1 2026.
  • Wellington Management Group bought 96,979 Mirum Pharmaceuticals shares in Q1 2026, an estimated $9.12M.
  • Mirum Pharmaceuticals made up 0.02% of Wellington Management Group's portfolio in Q1 2026, its #494 holding.
  • Wellington Management Group first reported a position in Mirum Pharmaceuticals in Q4 2020 and has held it in 19 quarters since.
  • 311 funds tracked by Wall St. Rank held Mirum Pharmaceuticals as of Q1 2026.

Based on Wellington Management Group's 13F filing for Q1 2026, filed 15 May 2026.