Who owns PRME?
Institutional ownership of Prime Medicine Inc. from Form 13F, Q2 2026
187 institutional managers reported holding Prime Medicine Inc. (PRME) in Form 13F filings for Q2 2026, with 106,664,406 shares worth $394M. The largest reported holder was Alphabet Inc. Managers that filed both quarters added a net 8,372,816 shares (+8.5%). 23 opened new positions and 23 sold out.
- Funds holding
- 187
- Value held
- $394M
- New / sold out
- 23 / 23
- Net shares, same filers
- +8.5%
Holdings as of June 30, 2026, the end of Q2 2026. Managers have 45 days after a quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
Largest holders of PRME
| Fund | Value | Share of 13F holdings | Shares | Move |
|---|---|---|---|---|
| Alphabet Inc. | $61.1M | 15.5% | 16,562,498 | Unchanged |
| BlackRock, Inc. | $35.4M | 9.0% | 9,602,041 | Added |
| ARK Investment Management LLC | $30.8M | 7.8% | 8,348,746 | Added |
| State Street Corp | $28.0M | 7.1% | 7,576,460 | Added |
| T. Rowe Price Investment Management, Inc. | $19.3M | 4.9% | 5,237,332 | Trimmed |
| Vanguard Capital Management LLC | $16.7M | 4.2% | 4,522,640 | Added |
| Balyasny Asset Management L.P. | $14.6M | 3.7% | 3,969,082 | Trimmed |
| Goldman Sachs Group Inc | $12.7M | 3.2% | 3,430,518 | Added |
| Casdin Capital, LLC | $11.7M | 3.0% | 3,167,175 | Unchanged |
| Woodline Partners LP | $11.1M | 2.8% | 3,003,904 | Unchanged |
| UBS Group AG | $10.3M | 2.6% | 2,794,689 | Trimmed |
| Geode Capital Management, LLC | $10.0M | 2.5% | 2,712,446 | Trimmed |
| Sumitomo Mitsui Trust Group, Inc. | $8.9M | 2.3% | 2,412,984 | Trimmed |
| Amova Asset Management Americas, Inc. | $8.9M | 2.3% | 2,407,018 | Trimmed |
| Citadel Advisors LLC | $7.6M | 1.9% | 2,054,543 | Added |
| ADAR1 Capital Management, LLC | $7.4M | 1.9% | 1,997,552 | Added |
| FMR LLC | $6.5M | 1.7% | 1,761,884 | Trimmed |
| Two Sigma Investments, LP | $5.6M | 1.4% | 1,524,511 | Trimmed |
| Redmile Group, LLC | $5.1M | 1.3% | 1,389,632 | Trimmed |
| Farallon Capital Management, L.l.c. | $4.6M | 1.2% | 1,240,843 | Unchanged |
| Jump Financial, LLC | $4.6M | 1.2% | 1,240,429 | New |
| Bank of America Corp | $3.6M | 0.9% | 981,335 | Added |
| Vanguard Portfolio Management LLC | $3.5M | 0.9% | 961,826 | Added |
| Charles Schwab Investment Management Inc | $3.4M | 0.9% | 927,538 | Added |
| Northern Trust Corp | $3.4M | 0.9% | 912,597 | Added |
Share of 13F holdings is each fund's shares as a share of the 106,664,406 PRME shares all 13F filers reported, not of shares outstanding.
Biggest buyers in Q2 2026
- Goldman Sachs Group Inc Added+$9.1M
- ARK Investment Management LLC Added+$7.8M
- Citadel Advisors LLC Added+$6.3M
- Jump Financial, LLC New+$4.6M
- State Street Corp Added+$4.5M
- BlackRock, Inc. Added+$4.1M
- Point72 Asset Management, L.P. New+$2.0M
- Millennium Management LLC New+$1.6M
- Bank of America Corp Added+$1.5M
- Alessandra Capital Management, LLC Added+$890K
Biggest sellers in Q2 2026
- D. E. Shaw & Co., Inc. Trimmed-$2.7M
- Renaissance Technologies LLC Trimmed-$2.3M
- Amova Asset Management Americas, Inc. Trimmed-$2.0M
- Sumitomo Mitsui Trust Group, Inc. Trimmed-$1.9M
- HRT Financial LP Trimmed-$1.7M
- AQR Capital Management LLC Trimmed-$1.6M
- T. Rowe Price Investment Management, Inc. Trimmed-$902K
- Bollard Group LLC Trimmed-$775K
- Redmile Group, LLC Trimmed-$742K
- Balyasny Asset Management L.P. Trimmed-$569K
The change in shares since the quarter before, adjusted for stock splits and priced at the Q2 2026 value per share. Funds bought $51.5M and sold $20.5M; 61 added and 66 trimmed.
Questions about PRME ownership
- Who owns PRME stock?
- 187 institutional investment managers reported PRME positions in their Form 13F filings for Q2 2026, holding 106,664,406 shares worth $394M in total. Alphabet Inc. reported the largest position.
- Are funds buying or selling PRME?
- In Q2 2026, 23 managers opened new PRME positions, 61 added, 66 trimmed and 23 sold out. Managers that filed in both quarters added a net 8,372,816 shares.
- How current is this PRME institutional ownership data?
- It covers holdings as of the end of Q2 2026. Managers have 45 days after the quarter ends to file Form 13F (by August 14, 2026 for Q2 2026), so positions may have changed since.
From the SEC's Form 13F data sets for Q2 2026: every 13F holdings report, matched to PRME by CUSIP. Options are left out. PRME news and filings · PRME insider trades · Top funds