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PRME · Prime Medicine, Inc.

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$3.24 -0.30 (-8.47%) At close · Aug 20
Market Cap
$642.07M
Shares
181.38M

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: 187
Total Value: $397,187,541
Total Shares: 107,638,933

Institutional Ownership Trend

15 quarters

Holder Concentration

Across 187 13F filers · Δ vs Mar 31, 2026
Top Holder
15.4%
Sep 2023 → Jun 2026 · range 15.4% – 25.5%
−1.2 pts
Top 5
44.0%
Sep 2023 → Jun 2026 · range 43.3% – 56.5%
+0.6 pts
Top 10
60.8%
Sep 2023 → Jun 2026 · range 60.8% – 80.2%
−0.3 pts
HHI
557
Sep 2023 → Jun 2026 · range 557 – 992
Broadly held−20

Quarterly Activity

vs Mar 31, 2026
New
23
Increased
64
Decreased
67
Sold Out
29
Unchanged
33
Holder count: -6
Institutional value: +14.6%
Shares held: +8.1%

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 192
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1894562 CUSIP 74168J101 13F (30d) 175 filings 175 filers Visit website Investor relations