Mirum Pharmaceuticals
MIRM
214 hedge funds and large institutions have $2.82B invested in Mirum Pharmaceuticals in 2025 Q2 according to their latest regulatory filings, with 35 funds opening new positions, 76 increasing their positions, 80 reducing their positions, and 33 closing their positions.
15% more capital invested
Capital invested by funds: $2.44B → $2.82B (+$375M)
1.35% more ownership
Funds ownership: 110.47% → 111.83% (+1.4%)
6% more first-time investments, than exits
New positions opened: 35 | Existing positions closed: 33
0% more funds holding
Funds holding: 214 → 214 (0)
5% less repeat investments, than reductions
Existing positions increased: 76 | Existing positions reduced: 80
18% less funds holding in top 10
Funds holding in top 10: 11 → 9 (-2)
69% less call options, than puts
Call options by funds: $1.55M | Put options by funds: $5.06M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Janus Henderson Group
London,
United Kingdom
|
+$20.9M |
| 2 |
EA
Emerald Advisers
Leola,
Pennsylvania
|
+$13.6M |
| 3 |
SCM
Soleus Capital Management
Greenwich,
Connecticut
|
+$13.3M |
| 4 |
Bank of New York Mellon
New York
|
+$11.1M |
| 5 |
BlackRock
New York
|
+$10.6M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Invesco
Atlanta,
Georgia
|
-$11.1M |
| 2 |
PCH
Polar Capital Holdings
London,
United Kingdom
|
-$8.9M |
| 3 |
Millennium Management
New York
|
-$8.51M |
| 4 |
Jane Street
New York
|
-$7.09M |
| 5 |
CSS
Cubist Systematic Strategies
Stamford,
Connecticut
|
-$6.76M |
MIRM Hedge Fund Activity: Q2 2025 in Review
214 of the 7,595 institutional investors tracked by Wall St. Rank reported a position in Mirum Pharmaceuticals (MIRM) for Q2 2025, worth a combined $2.82B — up 15% from $2.44B a quarter earlier.
Buyers outnumbered sellers: 35 funds opened new MIRM positions and 33 closed out — a net gain of 2 holders — while 76 added to existing stakes and 80 trimmed.
The largest buyer was Janus Henderson Group, adding an estimated $20.9M. The largest seller was Invesco, cutting an estimated $11.1M.
- 214 institutional investors held Mirum Pharmaceuticals (MIRM) as of Q2 2025, unchanged from Q1 2025.
- Funds reported $2.82B of Mirum Pharmaceuticals stock for Q2 2025, up 15% quarter-over-quarter.
- 35 funds opened new Mirum Pharmaceuticals positions in Q2 2025 and 33 closed out, a net change of +2 holders.
- The largest Mirum Pharmaceuticals buyer in Q2 2025 was Janus Henderson Group, an estimated $20.9M added.
- The largest Mirum Pharmaceuticals seller in Q2 2025 was Invesco, an estimated $11.1M sold.
Based on aggregated 13F filings for Q2 2025.