MIRM Institutional Ownership
Who owns Mirum Pharmaceuticals, Inc. and what the big funds did with it last quarter, from every SEC 13F filing. 331 funds reported holding MIRM at Jun 30, 2026, together owning 110.2% of the company.
- ▲185 buying vs 147 selling
- ●Held by funds -0.4 pts
- ▲Funds holding +14
- ▼Superinvestors: 0 added, 4 cut
- ●Put/call not meaningful
What the filings show, not a forecast. Positions can be up to 45 days old and leave out short sales.
Funds holding and ownership
8 quartersQuarter over quarter
all 13F filers| Q2 2026 | This quarter | Q1 2026 | Change |
|---|---|---|---|
| Funds holding | 331 | 317 | +4.4% |
| In funds' top 10 | 20 | 16 | +25.0% |
| 13F shares | 71.5M | 71.8M | −0.4% |
| Held by funds | 110.2% | 110.6% | −0.4 pts |
| New positions | 59 | 62 | −4.8% |
| Increased | 126 | 115 | +9.6% |
| Reduced | 102 | 87 | +17.2% |
| Sold out | 45 | 38 | +18.4% |
| Calls (shares) | 2,000 | 100K | −98.0% |
| Puts (shares) | 6,600 | 6,600 | 0.0% |
| Put/call ratio | 3.30 | 0.07 | +4900.0% |
Buyers vs sellers
adding or new vs cutting or sold outSuperinvestors in MIRM
All superinvestors →
Who owns MIRM
share of fund held shares- Index and passive funds21.8%
- Active managers and hedge funds69.2%
- Banks and brokers8.4%
- Pensions, insurers and other0.7%
The top 10 holders own 47.4% of all MIRM shares that funds reported. Groups are our own grouping of filers by name.
Put/call ratio
funds' options, market makers left outAbove 1 means funds hold more puts than calls, a sign of hedging or bets on a fall. Options are valued at the underlying shares.
Filed so far for Q3 2026
65 funds changed their position- Capricorn Fund Managers LtdSold out−101K sh
- Principal Financial Group IncTrimmed−53K sh
- Mackenzie Financial CorpTrimmed−27K sh
- Calamos Advisors LLCSold out−12K sh
- Ellsworth Advisors, LLCSold out−11K sh
🔒 Free account: see all 20.
Top holders
Q2 2026| # | Fund | Of company | Shares | Value | Change |
|---|---|---|---|---|---|
| 1 | Frazier Life Sciences Management, L.P. | 11.83% | 7.7M | $899M | 0 |
| 2 | Jupiter Topco LLC | 9.10% | 5.9M | $692M | – |
| 3 | BlackRock, Inc. | 6.76% | 4.4M | $514M | +544K |
| 4 | Fmr LLC | 5.65% | 3.7M | $430M | +1.7M |
| 5 | Price T Rowe Associates Inc /md/ | 4.09% | 2.7M | $311M | +938K |
| 6 | Vanguard Portfolio Management LLC | 3.66% | 2.4M | $278M | +945K |
| 7 | Vanguard Capital Management LLC | 3.47% | 2.3M | $264M | −161K |
| 8 | State Street Corp | 3.34% | 2.2M | $254M | +226K |
| 9 | William Blair Investment Management, LLC | 2.16% | 1.4M | $164M | +1.1M |
| 10 | Geode Capital Management, LLC | 2.15% | 1.4M | $163M | +134K |
- Fmr LLC+1.7M sh+$200M
- Invesco Ltd.+1.1M sh+$126M
- William Blair Investment Management, LLC+1.1M sh+$125M
- Vanguard Portfolio Management LLC+945K sh+$111M
- Price T Rowe Associates Inc /md/+938K sh+$110M
- Polar Capital Holdings Plc+562K sh+$65.8M
- BlackRock, Inc.+544K sh+$63.6M
- Ameriprise Financial Inc+507K sh+$59.4M
- Citadel Advisors LLC−1.1M sh−$97.2M
- Bvf Inc/il−529K sh−$61.9M
- Paradigm Biocapital Advisors LP−625K sh−$57.7M
- Soleus Capital Management, L.P.−325K sh−$38.1M
- Bnp Paribas Financial Markets−305K sh−$35.7M
- Point72 Asset Management, L.P.−347K sh−$32.1M
- Millennium Management LLC−272K sh−$31.9M
- Novo Holdings A/s−200K sh−$23.4M
MIRM institutional ownership FAQ
Who owns the most MIRM stock?
In Q2 2026 13F filings the largest holder of MIRM was Frazier Life Sciences Management, L.P., followed by Jupiter Topco LLC and BlackRock, Inc.. Index fund managers are usually the biggest holders of large companies.
What percentage of MIRM is owned by institutions?
Funds that file 13F reports held 110.2% of MIRM's shares at Jun 30, 2026, compared with 110.6% a quarter earlier. That counts every manager with more than $100 million in US stocks.
Are hedge funds buying MIRM?
In Q2 2026, 185 funds bought MIRM (59 of them new positions) and 147 sold (45 sold out completely). Among well known investors, 0 added and 4 cut. Our fund sentiment for MIRM is neutral.
What is MIRM's institutional put/call ratio?
Funds reported $773K of MIRM puts against $234K of calls, a put/call ratio of 3.30 (0.07 the quarter before). Market makers and bank trading desks are left out, since their options are mostly hedges.
How current is this MIRM ownership data?
13F filings show holdings at the end of each quarter and are due within 45 days, so positions can be up to six weeks old when they appear. We add each new filing within minutes, and the "filed so far" list shows funds that have already reported the next quarter.
For informational and educational purposes only. Not investment advice, and not a recommendation to buy or sell any security. Fund sentiment summarises what 13F filings show and is not a forecast. Holdings come from SEC Form 13F filings as reported and show positions at the end of the quarter, up to 45 days before the filing. A 13F leaves out short positions, cash, bonds and most foreign holdings. See all hedge fund holdings.