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MIRM · Mirum Pharmaceuticals, Inc.

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$97.46 -2.29 (-2.30%) At close · Aug 28
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

Holder Concentration

Across 331 13F filers · Δ vs Mar 31, 2026
Top Holder
10.7%
Sep 2023 → Jun 2026 · range 10.7% – 13.2%
−0.5 pts
Top 5
33.9%
Sep 2023 → Jun 2026 · range 33.4% – 42.4%
+0.6 pts
Top 10
47.4%
Sep 2023 → Jun 2026 · range 45.2% – 58.9%
+2.2 pts
HHI
344
Sep 2023 → Jun 2026 · range 344 – 485
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

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 336
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1759425 CUSIP 604749101 13F (30d) 268 filings 266 filers Visit website Investor relations