MIRM Mirum Pharmaceuticals, Inc.
Mirum Pharmaceuticals, Inc. (MIRM) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| Paradigm BioCapital Advisors Growth Healthcare | Sold Out | -625.0K | -100.0% | $73.2M | 0.0% | 71 |
| CITADEL ADVISORS LLC Quant | Sold Out | -1.05M | -100.0% | $123.2M | 0.0% | 66 |
| Perceptive Advisors Growth Healthcare | New | +115.4K | — | $13.5M | 0.2% | 65 |
| Biotechnology Value Fund Value Healthcare | Reduced | -528.7K | -33.4% | $61.9M | 3.2% | 65 |
| Logos Global Management Growth Healthcare | Sold Out | -200.0K | -100.0% | $23.4M | 0.0% | 64 |
| Point72 Asset Management, L.P. | Sold Out | -347.0K | -100.0% | $40.6M | 0.0% | 64 |
| Deerfield Management Growth Healthcare | New | +6.0K | — | $705.6K | 0.0% | 61 |
| Farallon Capital Management Event Value | Sold Out | -3.0K | -100.0% | $351.2K | 0.0% | 60 |
| Voloridge Investment Management Quant | Sold Out | -104.1K | -100.0% | $12.2M | 0.0% | 58 |
| Soleus Capital Management Growth Healthcare | Reduced | -325.3K | -81.3% | $38.1M | 0.3% | 58 |
Most significant buyers
By move score, not size.
- Perceptive Advisors
- Deerfield Management
- Aristeia Capital
- Man Group
- Trexquant Investment
Most significant sellers
By move score, not size.
- Paradigm BioCapital Advisors
- CITADEL ADVISORS LLC
- Biotechnology Value Fund
- Logos Global Management
- Point72 Asset Management, L.P.
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| Paradigm BioCapital Advisors | 1 | 0 | 625.0K | -625.0K | -100.0% | 0.0% | Sold Out | 71 |
| CITADEL ADVISORS LLC | 1 | 0 | 1.1M | -1.05M | -100.0% | 0.0% | Sold Out | 66 |
| Perceptive Advisors | 1 | 115.4K | 0 | +115.4K | — | 0.2% | New | 65 |
| Biotechnology Value Fund | 1 | 1.1M | 1.6M | -528.7K | -33.4% | 3.2% | Reduced | 65 |
| Logos Global Management | 2 | 0 | 200.0K | -200.0K | -100.0% | 0.0% | Sold Out | 64 |
| Point72 Asset Management, L.P. | 1 | 0 | 347.0K | -347.0K | -100.0% | 0.0% | Sold Out | 64 |
| Deerfield Management | 1 | 6.0K | 0 | +6.0K | — | 0.0% | New | 61 |
| Farallon Capital Management | 1 | 0 | 3.0K | -3.0K | -100.0% | 0.0% | Sold Out | 60 |
| Voloridge Investment Management | 2 | 0 | 104.1K | -104.1K | -100.0% | 0.0% | Sold Out | 58 |
| Soleus Capital Management | 2 | 75.0K | 400.3K | -325.3K | -81.3% | 0.3% | Reduced | 58 |
| Aristeia Capital | 2 | 64.5K | 0 | +64.5K | — | 0.4% | New | 57 |
| ExodusPoint Capital Management | 3 | 0 | 87.4K | -87.4K | -100.0% | 0.0% | Sold Out | 57 |
| MARSHALL WACE, LLP | 2 | 0 | 4.7K | -4.7K | -100.0% | 0.0% | Sold Out | 56 |
| Capital Fund Management | 3 | 0 | 19.6K | -19.6K | -100.0% | 0.0% | Sold Out | 55 |
| Man Group | 3 | 37.2K | 0 | +37.2K | — | 0.0% | New | 54 |
| Hudson Bay Capital Management | 3 | 0 | 8.5K | -8.5K | -100.0% | 0.0% | Sold Out | 53 |
| Trexquant Investment | 3 | 53.3K | 0 | +53.3K | — | 0.0% | New | 53 |
| Cinctive Capital Management | 3 | 0 | 38.5K | -38.5K | -100.0% | 0.0% | Sold Out | 53 |
| Alyeska Investment Group, L.P. | 2 | 74.0K | 34.1K | +39.9K | +117.2% | 0.0% | Increased | 52 |
| D. E. Shaw & Co., Inc. | 1 | 27.9K | 167.5K | -139.6K | -83.4% | 0.0% | Reduced | 52 |
| Palo Alto Investors | 2 | 348.8K | 325.2K | +23.6K | +7.3% | 2.0% | Increased | 51 |
| CenterBook Partners | 4 | 0 | 19.7K | -19.7K | -100.0% | 0.0% | Sold Out | 51 |
| Squarepoint Ops LLC | 2 | 2.9K | 61.7K | -58.8K | -95.3% | 0.0% | Reduced | 49 |
| MILLENNIUM MANAGEMENT LLC | 2 | 96.2K | 368.6K | -272.4K | -73.9% | 0.0% | Reduced | 49 |
| Winton Group | 4 | 0 | 2.2K | -2.2K | -100.0% | 0.0% | Sold Out | 48 |
| Jain Global | 3 | 21.0K | 3.9K | +17.2K | +444.7% | 0.0% | Increased | 48 |
| Rock Springs Capital Management | 3 | 798.1K | 811.3K | -13.1K | -1.6% | 4.6% | Reduced | 47 |
| Quantbot Technologies | 4 | 376 | 0 | +376 | — | 0.0% | New | 45 |
| Aquatic Capital Management | 4 | 36.7K | 17.0K | +19.7K | +115.9% | 0.1% | Increased | 45 |
| Engineers Gate | 4 | 8.1K | 2.6K | +5.6K | +218.2% | 0.0% | Increased | 42 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 442.2K | 582.1K | -139.9K | -24.0% | 0.1% | Reduced | 38 |
| Voleon Capital Management | 3 | 82.9K | 150.5K | -67.6K | -44.9% | 0.2% | Reduced | 35 |
| ADAR1 Capital Management | 3 | 3.9K | 6.2K | -2.3K | -37.1% | 0.0% | Reduced | 31 |
| Balyasny Asset Management L.P. | 2 | 489.2K | 539.0K | -49.9K | -9.3% | 0.1% | Reduced | 31 |
| TWO SIGMA INVESTMENTS, LP | 2 | 690.3K | 774.8K | -84.5K | -10.9% | 0.1% | Reduced | 31 |
| Gotham Asset Management, LLC | 2 | 2.4K | 3.1K | -759 | -24.1% | 0.0% | Reduced | 29 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 2 | 350.0K | 375.0K | -25.0K | -6.7% | 0.1% | Reduced | 29 |
| AQR Capital Management | 3 | 28.6K | 31.8K | -3.1K | -9.9% | 0.0% | Reduced | 22 |
| Tang Capital Management | 2 | 1.2M | 1.2M | 0 | +0.0% | 6.6% | Unchanged | 44 |
| Woodline Partners LP | 2 | 567.9K | 567.9K | 0 | +0.0% | 0.2% | Unchanged | 19 |
| Baker Bros. Advisors | 1 | 446.0K | 446.0K | 0 | +0.0% | 0.3% | Unchanged | 26 |
| RA Capital Management | 1 | 318.6K | 318.6K | 0 | +0.0% | 0.3% | Unchanged | 27 |
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Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.