PRME in the 13F filings
Prime Medicine Inc · CUSIP 74168J101
- Quarter end
- 31 Mar 2026
- the date the book describes
- Filed
- 27 Oct 2026
- latest of these filings; the earliest 12 May 2026
- Managers listing it
- 20
- at least, of 95 tracked, among listed positions
- Comparable managers
- 91
- filed both Q4 2025 and Q1 2026; 4 listed it in both
- Shares listed
- 23,188,096
- combined, among listed positions
- Reported value
- $81m
- combined, at the quarter end
AllianceBernstein LP. Values in this filing are at the previous quarter end's prices; its share count is the quarter end's.
Among the 91 comparable managers: 11 buyers (opened or added shares) and 13 sellers (trimmed or exited), at least, among listed positions. Their net change in shares was -87,197.
Managers listing PRME in Q1 2026
20 of 20 holders
Largest increases and reductions, by shares
Increases
- Balyasny Asset Management LLCexisting position · 4,123,365 shares now+999,003
- ARK Investment Management LLCexisting position · 6,246,827 shares now+878,301
- Citadel Advisors LLCexisting position · 336,358 shares now+223,488
- Marshall Wace LLPnew position · 141,957 shares now+141,957
- AQR Capital Management LLCexisting position · 554,935 shares now+139,114
Reductions
- Susquehanna International Group LLPexisting position · 715,829 shares now-460,898
- Renaissance Technologies LLCexisting position · 741,039 shares now-408,120
- Fidelity (FMR LLC)existing position · 1,769,476 shares now-407,170
- D. E. Shaw & Co.existing position · 1,393,621 shares now-157,748
- Squarepoint Ops LLCexisting position · 94,066 shares now-123,976
New positions and exits
New (2)
- Marshall Wace LLP$494k
- Tudor Investment Corp$214k
Exited (7)
- Point72 Asset Management LPwas $1.9m
- Verition Fund Management LLCwas $1.0m
- Brevan Howard Capital Management LPwas $195k
- Millennium Management LLCwas $178k
- Walleye Capital LLCwas $160k
- Voloridge Investment Management LLCwas $80k
- Neuberger Berman Group LLCwas $38k
Ownership over time
Tracked managers listing it, at least.
| Quarter | Holders | Reported value | Buyers | Sellers |
|---|---|---|---|---|
| Q4 2022 | 2 | $40m | n.a. | n.a. |
| Q1 2023 | 2 | $30m | n.a. | n.a. |
| Q2 2023 | 2 | $42m | n.a. | n.a. |
| Q3 2023 | 2 | $29m | n.a. | n.a. |
| Q4 2023 | 2 | $29m | 2 | 1 |
| Q1 2024 | 3 | $51m | 3 | 0 |
| Q2 2024 | 3 | $38m | 1 | 0 |
| Q3 2024 | 3 | $27m | 0 | 1 |
| Q4 2024 | 3 | $19m | 0 | 1 |
| Q1 2025 | 3 | $8.6m | 0 | 1 |
| Q2 2025 | 3 | $8.8m | 0 | 1 |
| Q3 2025 | 4 | $76m | 3 | 0 |
| Q4 2025 | 4 | $35m | 15 | 15 |
| Q1 2026 | 4 | $38m | 11 | 13 |
| Q2 2026 | 3 | $37m | 13 | 9 |
Compare with…
Holders over time, buyers and sellers, and the managers holding both, side by side for up to four stocks.
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How much of the picture this is
A 13F is a manager’s long US-listed equity book at a quarter end, filed up to 45 days later. It shows no shorts, cash, bonds or performance, and it is never today’s portfolio. Large books are listed to their largest positions, so a manager missing from this table may still hold a small position below that line. These are 95 tracked managers, not the institutional market.
Which funds own PRME, latest filings →Back to the 13F Explorer →