Personalis, Inc.: which funds bought and sold
Institutions that bought and sold Personalis shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 109 institutions that filed 13F reports for both quarters added to or opened positions in Personalis, and 54 cut or closed them. Together they added a net 331K shares, +0.4% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 3.8M shares (−15.7%); index fund managers were net buyers of 3.2M shares (+26.5%). 41 opened a new position and 20 sold out entirely.
Bought, Q2 2026 109 institutions, 41 of them new holders Sold, Q2 2026 54 institutions, 20 of them sold out
Net change, all compared +331K shares (+0.4%)
Net change, active managers −3.8M shares (−15.7%), 22 bought, 13 sold
Buyers versus sellers
109 bought 13 54 sold
Active managers and hedge funds 22 bought · 13 sold · −3.8M
Index fund managers 10 bought · 0 sold · +3.2M
Other institutions 77 bought · 41 sold · +871K
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Bank Of America Corp | +1.7M +1535.6% | 1.8M | $24.4M |
| Blackrock, Inc. Index funds | +1.7M +31.4% | 7.1M | $94.9M |
| Morgan Stanley | +1.0M +435.6% | 1.3M | $17M |
| Deep Track Capital, LP Hedge fund | +1.0M +33.3% | 4.0M | $53.6M |
| Casdin Capital, LLC Hedge fund | +950K +59.4% | 2.5M | $34.2M |
| Jane Street Group, LLC | +738K New position | 738K | $9.9M |
| HRT Financial LP | +722K +345.6% | 931K | $12.5M |
| Trexquant Investment LP Hedge fund | +600K New position | 600K | $8M |
| Geode Capital Management, LLC Index funds | +525K +40.4% | 1.8M | $24.4M |
| Dimensional Fund Advisors LP | +431K +40.4% | 1.5M | $20.1M |
| Nuveen, LLC | +409K +119.2% | 753K | $10.1M |
| State Street Corp Index funds | +353K +31.1% | 1.5M | $19.9M |
| BNP Paribas Financial Markets | +351K +2575.4% | 365K | $4.9M |
| ARK Investment Management LLC Active manager | +327K +4.1% | 8.3M | $111M |
| Militia Capital Management LLC | +292K New position | 292K | $3.9M |
| Gilder Gagnon Howe & Co LLC Active manager | +278K New position | 278K | $3.7M |
| Aberdeen Group PLC | +259K +7.4% | 3.7M | $50.2M |
| Stempoint Capital LP | +248K New position | 248K | $3.3M |
| Northern Trust Corp Index funds | +227K +55.9% | 633K | $8.5M |
| Goldman Sachs Group Inc | +194K +26.3% | 931K | $12.5M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Deep Track Capital, LP Hedge fund | +1.0M +33.3% | 4.0M | $53.6M |
| Casdin Capital, LLC Hedge fund | +950K +59.4% | 2.5M | $34.2M |
| Trexquant Investment LP Hedge fund | +600K New position | 600K | $8M |
| ARK Investment Management LLC Active manager | +327K +4.1% | 8.3M | $111M |
| Gilder Gagnon Howe & Co LLC Active manager | +278K New position | 278K | $3.7M |
| Kennedy Capital Management LLC Active manager | +181K +8.3% | 2.4M | $31.7M |
| Fred Alger Management, LLC Active manager | +166K New position | 166K | $2.2M |
| Citadel Advisors LLC Hedge fund | +145K New position | 145K | $1.9M |
| Engineers Gate Manager LP Hedge fund | +116K New position | 116K | $1.6M |
| Brevan Howard Capital Management LP Hedge fund | +100K New position | 100K | $1.3M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| T. Rowe Price Investment Management, Inc. Active manager | −4.8M Sold out | 0 | — |
| Lightspeed Management Company, L.L.C. | −2.1M −25.2% | 6.1M | $81.8M |
| Ameriprise Financial Inc | −1.5M −19.8% | 6.1M | $81.6M |
| Price T Rowe Associates Inc Active manager | −1.5M −90.4% | 159K | $2.1M |
| Aigh Capital Management LLC | −1.2M −40.9% | 1.7M | $23M |
| Pfm Health Sciences, LP Hedge fund | −870K Sold out | 0 | — |
| Portolan Capital Management, LLC | −737K Sold out | 0 | — |
| Jpmorgan Chase & Co | −533K −92.6% | 43K | $585,324 |
| Balyasny Asset Management L.P. Hedge fund | −309K Sold out | 0 | — |
| Adage Capital Partners Gp, L.L.C. Hedge fund | −300K Sold out | 0 | — |
| UBS Group AG | −219K −57.0% | 165K | $2.2M |
| Royce & Associates LP Active manager | −156K Sold out | 0 | — |
| TD Asset Management Inc | −106K Sold out | 0 | — |
| Sei Investments Co | −87K −62.6% | 52K | $697,242 |
| Nano Cap New Millennium Growth Fund L P | −78K −33.0% | 158K | $2.1M |
| Amova Asset Management Americas, Inc. | −67K −13.8% | 417K | $5.6M |
| Sumitomo Mitsui Trust Group, Inc. | −67K −13.8% | 417K | $5.6M |
| Aquatic Capital Management LLC | −64K Sold out | 0 | — |
| Susquehanna International Group, LLP | −62K −41.8% | 87K | $1.2M |
| FMR LLC Active manager | −59K −93.5% | 4,080 | $54,672 |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| T. Rowe Price Investment Management, Inc. Active manager | −4.8M Sold out | 0 | — |
| Price T Rowe Associates Inc Active manager | −1.5M −90.4% | 159K | $2.1M |
| Pfm Health Sciences, LP Hedge fund | −870K Sold out | 0 | — |
| Balyasny Asset Management L.P. Hedge fund | −309K Sold out | 0 | — |
| Adage Capital Partners Gp, L.L.C. Hedge fund | −300K Sold out | 0 | — |
| Royce & Associates LP Active manager | −156K Sold out | 0 | — |
| FMR LLC Active manager | −59K −93.5% | 4,080 | $54,672 |
| Two Sigma Investments, LP Hedge fund | −33K −36.9% | 57K | $767,257 |
| Quadrature Capital Ltd Hedge fund | −21K −53.0% | 18K | $243,867 |
| Renaissance Technologies LLC Hedge fund | −15K Sold out | 0 | — |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Jane Street Group, LLC | 738K | $9.9M |
| Trexquant Investment LPHedge fund | 600K | $8M |
| Militia Capital Management LLC | 292K | $3.9M |
| Gilder Gagnon Howe & Co LLCActive manager | 278K | $3.7M |
| Stempoint Capital LP | 248K | $3.3M |
| Fred Alger Management, LLCActive manager | 166K | $2.2M |
| Citadel Advisors LLCHedge fund | 145K | $1.9M |
| Jump Financial, LLC | 130K | $1.7M |
| Engineers Gate Manager LPHedge fund | 116K | $1.6M |
| Brevan Howard Capital Management LPHedge fund | 100K | $1.3M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| T. Rowe Price Investment Management, Inc.Active manager | 4.8M | $30.3M |
| Pfm Health Sciences, LPHedge fund | 870K | $5.5M |
| Portolan Capital Management, LLC | 737K | $4.7M |
| Balyasny Asset Management L.P.Hedge fund | 309K | $2M |
| Adage Capital Partners Gp, L.L.C.Hedge fund | 300K | $1.9M |
| Royce & Associates LPActive manager | 156K | $993,949 |
| TD Asset Management Inc | 106K | $673,169 |
| Aquatic Capital Management LLC | 64K | $409,394 |
| Virtu Financial LLC | 34K | $219,000 |
| Bridgefront Capital, LLC | 26K | $163,346 |
Who holds the shares
- Institutions reporting
- 157
- Ten largest holders
- 67.4% of 13F-reported shares
- Index fund managers
- 18.2% of 13F-reported shares
- Active managers and hedge funds
- 23.9% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 22 | 13 | 13 | 6 | −3.8M | −15.7% |
| Index fund managers | 10 | 0 | 0 | 0 | +3.2M | +26.5% |
| Other institutions | 77 | 41 | 28 | 14 | +871K | +1.8% |