MIRM · Mirum Pharmaceuticals, Inc.
Market Cap
$6.48B
Shares
64.93M
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 331
Total Value: $8,382,862,814
Total Shares: 71,605,590
Showing 1–100
of 336 holdings by value
· page 1 of 4
Institutional Ownership Trend
26 quarters
Superinvestors Holding MIRM
All superinvestors →Holder Concentration
Across 331 13F filers · Δ vs Mar 31, 2026Top Holder
10.7%
−0.5 pts
Top 5
33.9%
+0.6 pts
Top 10
47.4%
+2.2 pts
HHI
344
Broadly held−11
Quarterly Activity
vs Mar 31, 2026
New
62
Increased
128
Decreased
102
Sold Out
45
Unchanged
39
Holder count:
+17
Institutional value:
+32.5%
Shares held:
+4.6%
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mega FMR LLC | +1,704,939 | 3,670,314 | |
| Mega Invesco Ltd. | +1,078,848 | 1,364,084 | |
| Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | +1,069,072 | 1,404,741 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC | +944,936 | 2,377,019 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | +938,186 | 2,655,607 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega CITADEL ADVISORS LLC | −1,046,748 | 16,800 | |
| Mid BVF INC/IL | −528,700 | 1,056,027 | |
| Large Point72 Asset Management, L.P. | −344,991 | 8,600 | |
| Mid Soleus Capital Management, L.P. | −325,306 | 75,000 | |
| Mega BNP PARIBAS ARBITRAGE, SA | −304,992 | 606,427 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega Jupiter Topco LLC | 5,909,184 | $691,788,169 | |
| Mid PERCEPTIVE ADVISORS LLC | 115,391 | $13,508,824 | |
| Small Seven Fleet Capital Management LP | 110,393 | $12,923,708 | |
| Mid Capricorn Fund Managers Ltd | 101,240 | $11,852,166 | |
| Mid PEREGRINE CAPITAL MANAGEMENT LLC | 88,820 | $10,398,157 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega JANUS HENDERSON GROUP PLC | 6,945,813 | $641,654,204 | |
| Mid Paradigm Biocapital Advisors LP | 625,000 | $57,737,500 | |
| Mid Logos Global Management LP | 200,000 | $18,476,000 | |
| Large VOLORIDGE INVESTMENT MANAGEMENT, LLC | 104,099 | $9,616,665 | |
| Large Caption Management, LLC | 100,000 | $9,238,000 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Mid Frazier Life Sciences Management, L.P. | $899,060,605 | 10.72% | 7,679,684 | Shares | 2026-08-14 | |
| Mega Jupiter Topco LLC | $691,788,169 | 8.25% | 5,909,184 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. | $513,944,667 | 6.13% | 4,390,063 | Shares | 2026-08-07 | |
| Mega FMR LLC | $429,683,657 | 5.13% | 3,670,314 | Shares | 2026-08-13 | |
| Mega PRICE T ROWE ASSOCIATES INC /MD/ | $310,891,910 | 3.71% | 2,655,607 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC | $278,277,614 | 3.32% | 2,377,019 | Shares | 2026-08-13 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $263,888,540 | 3.15% | 2,254,109 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP | $254,122,561 | 3.03% | 2,170,689 | Shares | 2026-08-07 | |
| Large WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | $164,453,028 | 1.96% | 1,404,741 | Shares | 2026-08-12 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | $163,184,809 | 1.95% | 1,393,908 | Shares | 2026-08-12 | |
| Mega Invesco Ltd. | $159,693,310 | 1.90% | 1,364,084 | Shares | 2026-08-14 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP | $153,360,175 | 1.83% | 1,309,987 | Shares | 2026-08-14 | |
| Mid EVENTIDE ASSET MANAGEMENT, LLC | $146,148,900 | 1.74% | 1,248,389 | Shares | 2026-08-14 | |
| Mid TANG CAPITAL MANAGEMENT LLC | $144,701,680 | 1.73% | 1,236,027 | Shares | 2026-08-14 | |
| Mega Capital World Investors | $135,037,903 | 1.61% | 1,153,480 | Shares | 2026-08-12 | |
| Mega FRANKLIN RESOURCES INC | $134,954,782 | 1.61% | 1,152,770 | Shares | 2026-08-13 | |
| Mid NOVO HOLDINGS A/S | $131,703,750 | 1.57% | 1,125,000 | Shares | 2026-08-14 | |
| Mid TCG Crossover Management, LLC | $124,334,076 | 1.48% | 1,062,049 | Shares | 2026-08-14 | |
| Mid BVF INC/IL | $123,629,080 | 1.47% | 1,056,027 | Shares | 2026-08-14 | |
| Large Polar Capital Holdings Plc | $98,985,494 | 1.18% | 845,524 | Shares | 2026-08-14 | |
| Mid Rock Springs Capital Management LP | $93,438,835 | 1.11% | 798,145 | Shares | 2026-08-14 | |
| Large NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $88,041,791 | 1.05% | 752,044 | Shares | 2026-08-14 | |
| Mega AMERIPRISE FINANCIAL INC | $85,074,065 | 1.01% | 726,694 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP | $80,815,528 | 0.96% | 690,318 | Shares | 2026-08-14 | |
| Mega Bank of New York Mellon Corp Bank | $78,433,851 | 0.94% | 669,974 | Shares | 2026-08-06 | |
| Mega Clearbridge Investments, LLC | $74,893,659 | 0.89% | 639,734 | Shares | 2026-08-13 | |
| Mega BNP PARIBAS ARBITRAGE, SA | $70,994,408 | 0.85% | 606,427 | Shares | 2026-08-13 | |
| Large Woodline Partners LP | $66,483,350 | 0.79% | 567,894 | Shares | 2026-08-14 | |
| Mega BANK OF AMERICA CORP /DE/ Bank | $65,761,027 | 0.78% | 561,724 | Shares | 2026-08-14 | |
| Mega GOLDMAN SACHS GROUP INC | $64,373,748 | 0.77% | 549,874 | Shares | 2026-08-14 | |
| Large LORD, ABBETT & CO. LLC | $63,332,177 | 0.76% | 540,977 | Shares | 2026-08-14 | |
| Mega Pictet Asset Management Holding SA | $61,630,682 | 0.74% | 526,443 | Shares | 2026-07-30 | |
| Large Balyasny Asset Management L.P. | $57,267,131 | 0.68% | 489,170 | Shares | 2026-08-14 | |
| Mid EMERALD ADVISERS, LLC | $54,823,295 | 0.65% | 468,295 | Shares | 2026-08-05 | |
| Mega NORTHERN TRUST CORP Bank | $52,919,851 | 0.63% | 452,036 | Shares | 2026-08-13 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $52,614,653 | 0.63% | 449,429 | Shares | 2026-08-14 | |
| Large BAKER BROS. ADVISORS LP | $52,210,293 | 0.62% | 445,975 | Shares | 2026-08-14 | |
| Large LOOMIS SAYLES & CO L P | $51,936,466 | 0.62% | 443,636 | Shares | 2026-08-14 | |
| Large RENAISSANCE TECHNOLOGIES LLC | $51,766,597 | 0.62% | 442,185 | Shares | 2026-08-13 | |
| Large FEDERATED HERMES, INC. | $51,116,858 | 0.61% | 436,635 | Shares | 2026-08-12 | |
| Mid NEXT CENTURY GROWTH INVESTORS LLC | $49,194,335 | 0.59% | 420,213 | Shares | 2026-08-14 | |
| Large Connor, Clark & Lunn Investment Management Ltd. | $49,176,775 | 0.59% | 420,063 | Shares | 2026-08-13 | |
| Small BOONE CAPITAL MANAGEMENT LLC | $48,659,091 | 0.58% | 415,641 | Shares | 2026-08-14 | |
| Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | $45,021,609 | 0.54% | 384,570 | Shares | 2026-08-03 | |
| Mega UBS Group AG | $44,458,502 | 0.53% | 379,760 | Shares | 2026-08-13 | |
| Large Candriam S.C.A. | $44,035,061 | 0.53% | 376,143 | Shares | 2026-08-13 | |
| Mid TimesSquare Capital Management, LLC | $42,997,586 | 0.51% | 367,281 | Shares | 2026-08-07 | |
| Mega MORGAN STANLEY | $41,138,864 | 0.49% | 351,404 | Shares | 2026-08-13 | |
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. | $40,974,500 | 0.49% | 350,000 | Shares | 2026-08-14 | |
| Small Palo Alto Investors LP | $40,834,952 | 0.49% | 348,808 | Shares | 2026-08-19 | |
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $40,767,286 | 0.49% | 348,230 | Shares | 2026-08-13 | |
| Mid Octagon Capital Advisors LP | $39,675,023 | 0.47% | 338,900 | Shares | 2026-08-14 | |
| Large PANAGORA ASSET MANAGEMENT INC | $39,506,559 | 0.47% | 337,461 | Shares | 2026-08-06 | |
| Mega Nuveen, LLC | $38,549,043 | 0.46% | 329,282 | Shares | 2026-08-11 | |
| Large RA CAPITAL MANAGEMENT, L.P. | $37,293,116 | 0.44% | 318,554 | Shares | 2026-08-14 | |
| Large Hood River Capital Management LLC | $35,874,813 | 0.43% | 306,439 | Shares | 2026-08-14 | |
| Mid Penn Capital Management Company, LLC | $34,993,861 | 0.42% | 298,914 | Shares | 2026-07-30 | |
| Mid EMERALD MUTUAL FUND ADVISERS TRUST Mutual Fund | $33,876,780 | 0.40% | 289,372 | Shares | 2026-08-05 | |
| Small Patient Square Capital LP | $30,496,735 | 0.36% | 260,500 | Shares | 2026-08-12 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND Pension | $29,332,825 | 0.35% | 250,558 | Shares | 2026-07-29 | |
| Large BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $29,146,097 | 0.35% | 248,963 | Shares | 2026-08-13 | |
| Mega RAYMOND JAMES FINANCIAL INC | $27,313,718 | 0.33% | 233,311 | Shares | 2026-08-14 | |
| Small NAN FUNG TRINITY (HK) LTD | $27,239,730 | 0.32% | 232,679 | Shares | 2026-07-24 | |
| Small Trails Edge Capital Partners, LP | $26,143,135 | 0.31% | 223,312 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $25,692,412 | 0.31% | 219,462 | Shares | 2026-08-06 | |
| Small First Turn Management, LLC | $25,527,230 | 0.30% | 218,051 | Shares | 2026-08-14 | |
| Large Erste Asset Management GmbH | $23,999,350 | 0.29% | 205,000 | Shares | 2026-07-28 | |
| Large Handelsbanken Fonder AB | $23,083,745 | 0.28% | 197,179 | Shares | 2026-07-10 | |
| Mid SEGALL BRYANT & HAMILL, LLC | $20,953,188 | 0.25% | 178,980 | Shares | 2026-08-12 | |
| Large Ensign Peak Advisors, Inc | $20,557,257 | 0.25% | 175,598 | Shares | 2026-08-14 | |
| Mid Nicholas Investment Partners, LP | $20,217,403 | 0.24% | 172,695 | Shares | 2026-08-14 | |
| Mega CITIGROUP INC | $19,332,470 | 0.23% | 165,136 | Shares | 2026-08-03 | |
| Mega Legal & General Group Plc | $18,641,172 | 0.22% | 159,231 | Shares | 2026-08-14 | |
| Mega NEUBERGER BERMAN GROUP LLC | $16,325,060 | 0.19% | 139,447 | Shares | 2026-08-13 | |
| Mid Rhenman & Partners Asset Management AB | $16,296,729 | 0.19% | 139,205 | Shares | 2026-08-13 | |
| Mega FIRST TRUST ADVISORS LP | $15,938,026 | 0.19% | 136,141 | Shares | 2026-08-11 | |
| Small Highlander Partners, L.P. | $14,397,268 | 0.17% | 122,980 | Shares | 2026-07-29 | |
| Mid PDT Partners, LLC | $14,287,339 | 0.17% | 122,041 | Shares | 2026-08-14 | |
| Mid PERCEPTIVE ADVISORS LLC | $13,508,824 | 0.16% | 115,391 | Shares | 2026-08-14 | |
| Mid RICE HALL JAMES & ASSOCIATES, LLC | $12,956,488 | 0.15% | 110,673 | Shares | 2026-08-07 | |
| Small Seven Fleet Capital Management LP | $12,923,708 | 0.15% | 110,393 | Shares | 2026-08-17 | |
| Small ESSEX INVESTMENT MANAGEMENT CO LLC | $12,370,669 | 0.15% | 105,669 | Shares | 2026-08-06 | |
| Mega PRINCIPAL FINANCIAL GROUP INC | $11,929,432 | 0.14% | 101,900 | Shares | 2026-08-04 | |
| Mid Capricorn Fund Managers Ltd | $11,852,166 | 0.14% | 101,240 | Shares | 2026-07-24 | |
| Small Atle Fund Management AB | $11,801,475 | 0.14% | 100,807 | Shares | 2026-07-24 | |
| Mega MILLENNIUM MANAGEMENT LLC | $11,263,655 | 0.13% | 96,213 | Shares | 2026-08-14 | |
| Mid PEREGRINE CAPITAL MANAGEMENT LLC | $10,398,157 | 0.12% | 88,820 | Shares | 2026-07-17 | |
| Large VOYA INVESTMENT MANAGEMENT LLC | $10,098,106 | 0.12% | 86,257 | Shares | 2026-08-12 | |
| Mega Swiss National Bank Bank | $9,927,536 | 0.12% | 84,800 | Shares | 2026-08-11 | |
| Mid Voleon Capital Management LP | $9,702,410 | 0.12% | 82,877 | Shares | 2026-08-14 | |
| Mega Fisher Asset Management, LLC | $9,655,465 | 0.12% | 82,476 | Shares | 2026-08-04 | |
| Mega DEUTSCHE BANK AG\ Bank | $9,551,272 | 0.11% | 81,586 | Shares | 2026-08-07 | |
| Mega JPMORGAN CHASE & CO | $9,482,784 | 0.11% | 81,001 | Shares | 2026-08-12 | |
| Large SILVERCREST ASSET MANAGEMENT GROUP LLC | $9,046,935 | 0.11% | 77,278 | Shares | 2026-08-14 | |
| Mid Soleus Capital Management, L.P. | $8,780,250 | 0.10% | 75,000 | Shares | 2026-08-11 | |
| Mega MANUFACTURERS LIFE INSURANCE COMPANY, THE Insurance | $8,750,982 | 0.10% | 74,750 | Shares | 2026-08-14 | |
| Large Alyeska Investment Group, L.P. | $8,658,380 | 0.10% | 73,959 | Shares | 2026-08-14 | |
| Large SEI INVESTMENTS CO | $8,360,201 | 0.10% | 71,412 | Shares | 2026-08-14 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | $8,045,634 | 0.10% | 68,725 | Shares | 2026-08-13 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $7,902,225 | 0.09% | 67,500 | Call | 2026-08-14 |
Key facts
CIK
1759425
CUSIP
604749101
13F (30d)
268 filings
266 filers
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