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PRME · Prime Medicine, Inc. · Holdings

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$3.07 +0.09 (+3.02%)
Market Cap
$525.99M
Shares
181.38M
Volume · Oct 5 1.23M Avg daily vol (3M) 3.19M

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.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
Holders: 188
Total Value: $397,749,782
Total Shares: 107,791,302
Showing 1–100 of 193 holdings by value · page 1 of 2

Institutional Ownership Trend

15 quarters

Holder Concentration

Across 188 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
43.9%
Sep 2023 → Jun 2026 · range 43.2% – 56.5%
+0.7 pts
Top 10
60.7%
Sep 2023 → Jun 2026 · range 60.7% – 80.2%
−0.3 pts
HHI
556
Sep 2023 → Jun 2026 · range 556 – 992
Broadly held−19

Quarterly Activity

vs Mar 31, 2026
New
22
Increased
64
Decreased
68
Sold Out
27
Unchanged
34
Holder count: -5
Institutional value: +14.5%
Shares held: +8.0%

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 193
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1894562 CUSIP 74168J101 13F (30d) 3 filings 3 filers Visit website Investor relations