MIRUM PHARMACEUTICALS INC (MIRM)
Institutional ownership reported to the SEC as of Q2 2026, across 28 quarters.
315
Reporting holders
$8.0B
Reported value
105.3%
Of shares outstanding
0.2%
Held as options
+14
Holder change
Institutions report 68,368,931 shares against 64,932,203 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Options share is the part of reported value carried in derivative lines rather than shares. A high figure means institutions are expressing a view on this security without owning much of it.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Frazier Life Sciences Management, L.P. | $899.1M | 7,679,684 | 19.58% | 18q | HELD |
| Jupiter Topco LLC | $691.7M | 5,909,184 | 0.28% | new | FIRST |
| BlackRock, Inc. | $513.9M | 4,390,063 | 0.01% | 8q | +14.1%+$63.6M |
| FMR LLC | $429.7M | 3,670,314 | 0.02% | 18q | +86.7%+$199.6M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $278.3M | 2,377,019 | 0.01% | 2q | +66.0%+$110.6M |
| VANGUARD CAPITAL MANAGEMENT LLC | $263.9M | 2,254,109 | 0.01% | 2q | -6.7%-$18.8M |
| STATE STREET CORP | $254.1M | 2,170,689 | 0.01% | 28q | +11.6%+$26.5M |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $164.5M | 1,404,741 | 0.49% | 4q | +318.5%+$125.2M |
| GEODE CAPITAL MANAGEMENT, LLC | $163.2M | 1,393,908 | 0.01% | 28q | +10.6%+$15.7M |
| Invesco Ltd. | $159.7M | 1,364,084 | 0.01% | 24q | +378.2%+$126.3M |
| WELLINGTON MANAGEMENT GROUP LLP | $153.4M | 1,309,987 | 0.03% | 10q | -1.9%-$2.9M |
| EVENTIDE ASSET MANAGEMENT, LLC | $146.2M | 1,248,389 | 1.95% | 16q | -11.4%-$18.8M |
| TANG CAPITAL MANAGEMENT LLC | $144.7M | 1,236,027 | 6.57% | 17q | HELD |
| Capital World Investors | $135.0M | 1,153,480 | 0.02% | 2q | +59.2%+$50.2M |
| FRANKLIN RESOURCES INC | $135.0M | 1,152,770 | 0.03% | 19q | +61.3%+$51.3M |
| NOVO HOLDINGS A/S | $131.7M | 1,125,000 | 7.65% | 28q | -15.1%-$23.4M |
| TCG Crossover Management, LLC | $124.3M | 1,062,049 | 2.99% | 3q | HELD |
| BVF INC/IL | $123.6M | 1,056,027 | 3.16% | 12q | -33.4%-$61.9M |
| Polar Capital Holdings Plc | $99.0M | 845,524 | 0.23% | 18q | +198.3%+$65.8M |
| Rock Springs Capital Management LP | $93.4M | 798,145 | 4.56% | 28q | -1.6%-$1.5M |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $88.0M | 752,044 | 0.13% | 3q | +85.5%+$40.6M |
| AMERIPRISE FINANCIAL INC | $85.1M | 726,694 | 0.02% | 14q | +65.7%+$33.7M |
| TWO SIGMA INVESTMENTS, LP | $80.8M | 690,318 | 0.06% | 13q | -10.9%-$9.9M |
| Bank of New York Mellon Corp | $78.4M | 669,974 | 0.01% | 27q | +14.6%+$10.0M |
| Clearbridge Investments, LLC | $74.9M | 639,734 | 0.06% | 18q | -4.8%-$3.8M |
| BNP PARIBAS FINANCIAL MARKETS | $71.0M | 606,427 | 0.02% | 7q | -33.5%-$35.7M |
| Woodline Partners LP | $66.5M | 567,894 | 0.21% | 16q | HELD |
| BANK OF AMERICA CORP /DE/ | $65.8M | 561,724 | 0.00% | 28q | -22.2%-$18.8M |
| GOLDMAN SACHS GROUP INC | $64.4M | 549,874 | 0.01% | 19q | -17.0%-$13.2M |
| Pictet Asset Management Holding SA | $61.6M | 526,443 | 0.06% | 12q | +24.3%+$12.1M |
| Balyasny Asset Management L.P. | $57.3M | 489,170 | 0.07% | 4q | -9.3%-$5.8M |
| EMERALD ADVISERS, LLC | $54.8M | 468,295 | 1.29% | 5q | +17.9%+$8.3M |
| NORTHERN TRUST CORP | $52.9M | 452,036 | 0.01% | 28q | +14.5%+$6.7M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $52.6M | 449,429 | 0.01% | 26q | +5.2%+$2.6M |
| Sixth Street Partners Management Company, L.P. | $52.6M | 449,429 | 0.01% | new | NEW |
| BAKER BROS. ADVISORS LP | $52.2M | 445,975 | 0.26% | 2q | HELD |
| LOOMIS SAYLES & CO L P | $51.9M | 443,636 | 0.07% | 8q | -6.7%-$3.7M |
| RENAISSANCE TECHNOLOGIES LLC | $51.8M | 442,185 | 0.07% | 8q | -24.0%-$16.4M |
| FEDERATED HERMES, INC. | $51.1M | 436,635 | 0.07% | 18q | -13.7%-$8.1M |
| NEXT CENTURY GROWTH INVESTORS LLC | $49.2M | 420,213 | 2.61% | 8q | +9.0%+$4.1M |
| Connor, Clark & Lunn Investment Management Ltd. | $49.2M | 420,063 | 0.09% | 9q | -12.4%-$7.0M |
| BOONE CAPITAL MANAGEMENT LLC | $48.7M | 415,641 | 11.38% | 12q | -1.3%-$655.0K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $45.0M | 384,570 | 0.01% | 2q | +34.3%+$11.5M |
| UBS Group AG | $44.5M | 379,760 | 0.01% | 16q | -23.3%-$13.5M |
| Candriam S.C.A. | $44.0M | 376,143 | 0.20% | 9q | -19.0%-$10.3M |
| TimesSquare Capital Management, LLC | $43.0M | 367,281 | 0.63% | 4q | -2.4%-$1.1M |
| MORGAN STANLEY | $41.1M | 351,404 | 0.00% | 28q | -33.0%-$20.3M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $41.0M | 350,000 | 0.06% | 12q | -6.7%-$2.9M |
| Palo Alto Investors LP | $40.8M | 348,808 | 1.88% | 19q | +7.3%+$2.8M |
| VANGUARD FIDUCIARY TRUST CO | $40.8M | 348,230 | 0.01% | 2q | +4.5%+$1.7M |
| Octagon Capital Advisors LP | $39.7M | 338,900 | 3.57% | 2q | HELD |
| PANAGORA ASSET MANAGEMENT INC | $39.5M | 337,461 | 0.12% | 2q | +161.4%+$24.4M |
| Nuveen, LLC | $38.5M | 329,282 | 0.01% | 6q | -30.6%-$17.0M |
| RA CAPITAL MANAGEMENT, L.P. | $37.3M | 318,554 | 0.32% | 2q | HELD |
| Hood River Capital Management LLC | $35.9M | 306,439 | 0.26% | 3q | +7.4%+$2.5M |
| Penn Capital Management Company, LLC | $35.1M | 298,914 | 2.22% | 13q | +16.4%+$4.9M |
| EMERALD MUTUAL FUND ADVISERS TRUST | $33.9M | 289,372 | 1.19% | 5q | +15.6%+$4.6M |
| Patient Square Capital LP | $30.5M | 260,500 | 4.72% | 7q | +13.3%+$3.6M |
| NEW YORK STATE COMMON RETIREMENT FUND | $29.3M | 250,558 | 0.04% | 28q | +24.6%+$5.8M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $29.2M | 248,963 | 0.03% | 3q | -6.3%-$2.0M |
| RAYMOND JAMES FINANCIAL INC | $27.3M | 233,311 | 0.01% | 7q | +2.3%+$601.4K |
| NAN FUNG TRINITY (HK) LTD | $27.2M | 232,679 | 2.69% | 5q | HELD |
| Trails Edge Capital Partners, LP | $26.1M | 223,312 | 4.15% | 3q | -33.0%-$12.9M |
| Russell Investments Group, Ltd. | $25.7M | 219,462 | 0.02% | 19q | +11.3%+$2.6M |
| First Turn Management, LLC | $25.5M | 218,051 | 2.73% | 11q | -45.6%-$21.4M |
| Erste Asset Management GmbH | $25.2M | 205,000 | 0.20% | 12q | -2.4%-$615.0K |
| SEGALL BRYANT & HAMILL, LLC | $21.0M | 178,980 | 0.25% | 3q | +1.8%+$360.8K |
| Ensign Peak Advisors, Inc | $20.6M | 175,598 | 0.03% | 27q | -56.6%-$26.8M |
| Nicholas Investment Partners, LP | $20.2M | 172,695 | 1.14% | 8q | +31.5%+$4.8M |
| CITIGROUP INC | $19.3M | 165,136 | 0.01% | 28q | +7.6%+$1.4M |
| Legal & General Group Plc | $18.6M | 159,231 | 0.00% | 27q | +3.5%+$627.6K |
| NEUBERGER BERMAN GROUP LLC | $16.3M | 139,447 | 0.01% | 2q | +73.1%+$6.9M |
| Rhenman & Partners Asset Management AB | $16.3M | 139,205 | 1.54% | 10q | +50.3%+$5.5M |
| FIRST TRUST ADVISORS LP | $15.9M | 136,141 | 0.01% | 10q | -10.0%-$1.8M |
| Highlander Partners, L.P. | $14.4M | 122,980 | 4.83% | 19q | HELD |
| PDT Partners, LLC | $14.3M | 122,041 | 0.75% | 9q | -16.1%-$2.7M |
| PERCEPTIVE ADVISORS LLC | $13.5M | 115,391 | 0.20% | new | NEW |
| RICE HALL JAMES & ASSOCIATES, LLC | $13.0M | 110,673 | 0.63% | 14q | -24.7%-$4.3M |
| Seven Fleet Capital Management LP | $12.9M | 110,393 | 2.13% | new | NEW |
| ESSEX INVESTMENT MANAGEMENT CO LLC | $12.4M | 105,669 | 1.62% | 5q | -2.5%-$312.5K |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $12.3M | 7,924 | 0.00% | 22q | -67.4%-$25.5M |
| PRINCIPAL FINANCIAL GROUP INC | $11.9M | 101,900 | 0.01% | 5q | +77.6%+$5.2M |
| Capricorn Fund Managers Ltd | $11.9M | 101,240 | 0.93% | new | NEW |
| Atle Fund Management AB | $11.8M | 100,807 | 3.17% | 10q | -48.5%-$11.1M |
| MILLENNIUM MANAGEMENT LLC | $11.3M | 96,213 | 0.00% | 12q | -73.9%-$31.9M |
| PEREGRINE CAPITAL MANAGEMENT LLC | $10.4M | 88,820 | 0.34% | new | NEW |
| JPMORGAN CHASE & CO | $10.2M | 81,001 | 0.00% | 28q | -10.7%-$1.2M |
| VOYA INVESTMENT MANAGEMENT LLC | $10.1M | 86,257 | 0.01% | 13q | +25.3%+$2.0M |
| Swiss National Bank | $9.9M | 84,800 | 0.01% | 17q | +14.1%+$1.2M |
| Voleon Capital Management LP | $9.7M | 82,877 | 0.18% | 4q | -44.9%-$7.9M |
| Fisher Asset Management, LLC | $9.7M | 82,476 | 0.00% | 3q | -11.4%-$1.2M |
| DEUTSCHE BANK AG\ | $9.6M | 81,586 | 0.00% | 28q | +63.0%+$3.7M |
| SILVERCREST ASSET MANAGEMENT GROUP LLC | $9.0M | 77,278 | 0.06% | 19q | -4.6%-$434.7K |
| Soleus Capital Management, L.P. | $8.8M | 75,000 | 0.30% | 5q | -81.3%-$38.1M |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE | $8.8M | 74,750 | 0.01% | 13q | +34.2%+$2.2M |
| Alyeska Investment Group, L.P. | $8.7M | 73,959 | 0.02% | 2q | +117.2%+$4.7M |
| SEI INVESTMENTS CO | $8.4M | 71,412 | 0.01% | 8q | -12.0%-$1.1M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $8.0M | 68,725 | 0.00% | 15q | +3.1%+$245.4K |
| ARISTEIA CAPITAL, L.L.C. | $7.5M | 64,475 | 0.10% | new | NEW |
| Lisanti Capital Growth, LLC | $7.4M | 63,295 | 1.63% | 2q | +62.3%+$2.8M |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-13 | 13G/A | JANUS HENDERSON GROUP Ltd. | 9.7% |
| 2026-08-06 | 13G | FMR LLCwith 1 co-filers | 6.2% |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 315 | $8.0B | 68,368,931 | 59 | 120 | 95 | 0.2% |
| Q1 2026 | 301 | $6.1B | 66,081,678 | 62 | 110 | 79 | 0.4% |
| Q4 2025 | 267 | $4.6B | 58,756,971 | 43 | 96 | 76 | 0.1% |
| Q3 2025 | 259 | $4.1B | 55,884,329 | 68 | 88 | 73 | 0.3% |
| Q2 2025 | 200 | $2.7B | 53,424,360 | 31 | 67 | 68 | 0.2% |
| Q1 2025 | 202 | $2.3B | 51,332,189 | 34 | 79 | 55 | 0.3% |
| Q4 2024 | 192 | $2.1B | 50,150,199 | 30 | 61 | 55 | 0.2% |
| Q3 2024 | 168 | $2.0B | 50,693,384 | 28 | 68 | 38 | 0.7% |
| Q2 2024 | 155 | $1.8B | 52,470,178 | 20 | 61 | 46 | 0.3% |
| Q1 2024 | 164 | $1.3B | 52,349,032 | 21 | 65 | 45 | 0.3% |
| Q4 2023 | 175 | $1.5B | 49,810,999 | 34 | 61 | 45 | 0.5% |
| Q3 2023 | 147 | $1.5B | 48,716,548 | 29 | 65 | 27 | 0.2% |
| Q2 2023 | 133 | $952.2M | 36,773,844 | 35 | 52 | 25 | 0.2% |
| Q1 2023 | 104 | $839.1M | 34,503,263 | 23 | 34 | 23 | 1.2% |
| Q4 2022 | 89 | $636.2M | 32,587,902 | 15 | 38 | 20 | 0.1% |
| Q3 2022 | 108 | $727.2M | 34,592,167 | 17 | 47 | 25 | 0.1% |
| Q2 2022 | 108 | $586.9M | 30,198,406 | 23 | 44 | 22 | 0.1% |
| Q1 2022 | 99 | $613.4M | 27,783,894 | 27 | 23 | 27 | 0.3% |
| Q4 2021 | 84 | $397.9M | 24,825,104 | 20 | 26 | 19 | 0.5% |
| Q3 2021 | 72 | $466.5M | 23,336,138 | 15 | 19 | 20 | 0.4% |
| Q2 2021 | 67 | $416.1M | 24,064,836 | 10 | 21 | 22 | 0.0% |
| Q1 2021 | 61 | $463.3M | 23,373,102 | 8 | 21 | 16 | 0.0% |
| Q4 2020 | 72 | $417.9M | 23,931,741 | 24 | 23 | 12 | 0.0% |
| Q3 2020 | 50 | $361.2M | 18,743,135 | 1 | 19 | 20 | 0.0% |
| Q2 2020 | 57 | $369.3M | 18,975,552 | 20 | 16 | 8 | 0.0% |
| Q1 2020 | 43 | $262.7M | 18,761,955 | 9 | 20 | 4 | 0.0% |
| Q4 2019 | 39 | $399.9M | 16,307,478 | 13 | 12 | 7 | 0.0% |
| Q3 2019 | 39 | $165.9M | 16,487,699 | 38 | 0 | 0 | 0.0% |