Assembly Biosciences, Inc.: which funds bought and sold
Institutions that bought and sold Assembly Biosciences 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, 66 institutions that filed 13F reports for both quarters added to or opened positions in Assembly Biosciences, and 31 cut or closed them. Together they added a net 5.0M shares, +40.0% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 1.2M shares (+25.1%); index fund managers were net buyers of 1.1M shares (+107.9%). 32 opened a new position and 14 sold out entirely.
Bought, Q2 2026 66 institutions, 32 of them new holders Sold, Q2 2026 31 institutions, 14 of them sold out
Net change, all compared +5.0M shares (+40.0%)
Net change, active managers +1.2M shares (+25.1%), 17 bought, 11 sold
Buyers versus sellers
66 bought 7 31 sold
Active managers and hedge funds 17 bought · 11 sold · +1.2M
Index fund managers 9 bought · 0 sold · +1.1M
Other institutions 40 bought · 20 sold · +2.8M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Paradigm Biocapital Advisors LP | +888K +133.6% | 1.6M | $42.7M |
| Blackrock, Inc. Index funds | +564K +278.2% | 767K | $21.1M |
| Gilead Sciences, Inc. | +472K +10.5% | 5.0M | $137M |
| Commodore Capital LP Hedge fund | +415K +41.5% | 1.4M | $38.9M |
| Farallon Capital Management, L.L.C. Hedge fund | +377K +30.7% | 1.6M | $44.1M |
| Seven Fleet Capital Management LP | +377K +671.5% | 433K | $11.9M |
| Parkman Healthcare Partners LLC | +310K +75.4% | 721K | $19.8M |
| Ameriprise Financial Inc | +230K New position | 230K | $6.3M |
| Aberdeen Group PLC | +207K New position | 207K | $5.7M |
| Affinity Asset Advisors, LLC | +190K New position | 190K | $5.2M |
| Squadron Capital Management LLC | +160K New position | 160K | $4.4M |
| Woodline Partners LP Hedge fund | +151K New position | 151K | $4.1M |
| Driehaus Capital Management LLC Active manager | +150K New position | 150K | $4.1M |
| Geode Capital Management, LLC Index funds | +147K +110.9% | 280K | $7.7M |
| Ally Bridge Group (NY) LLC | +140K New position | 140K | $3.8M |
| Schonfeld Strategic Advisors LLC Hedge fund | +122K +101.0% | 242K | $6.7M |
| Point72 Asset Management, L.P. Hedge fund | +116K +33.9% | 461K | $12.7M |
| State Street Corp Index funds | +115K +203.3% | 172K | $4.7M |
| Franklin Resources Inc Active manager | +113K New position | 113K | $3.1M |
| Goldman Sachs Group Inc | +102K +280.7% | 138K | $3.8M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Commodore Capital LP Hedge fund | +415K +41.5% | 1.4M | $38.9M |
| Farallon Capital Management, L.L.C. Hedge fund | +377K +30.7% | 1.6M | $44.1M |
| Woodline Partners LP Hedge fund | +151K New position | 151K | $4.1M |
| Driehaus Capital Management LLC Active manager | +150K New position | 150K | $4.1M |
| Schonfeld Strategic Advisors LLC Hedge fund | +122K +101.0% | 242K | $6.7M |
| Point72 Asset Management, L.P. Hedge fund | +116K +33.9% | 461K | $12.7M |
| Franklin Resources Inc Active manager | +113K New position | 113K | $3.1M |
| Citadel Advisors LLC Hedge fund | +70K +277.0% | 96K | $2.6M |
| Millennium Management LLC Hedge fund | +65K +27.9% | 299K | $8.2M |
| Renaissance Technologies LLC Hedge fund | +24K +152.0% | 39K | $1.1M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Stempoint Capital LP | −200K −54.1% | 170K | $4.7M |
| Adage Capital Partners Gp, L.L.C. Hedge fund | −161K Sold out | 0 | — |
| Marshall Wace, LLP Hedge fund | −146K −89.1% | 18K | $487,357 |
| Patient Square Capital LP | −136K Sold out | 0 | — |
| Caption Management, LLC | −59K −72.1% | 23K | $627,341 |
| Arrowstreet Capital, Limited Partnership Hedge fund | −39K Sold out | 0 | — |
| Jane Street Group, LLC | −34K Sold out | 0 | — |
| Susquehanna International Group, LLP | −33K Sold out | 0 | — |
| 683 Capital Management, LLC Hedge fund | −28K Sold out | 0 | — |
| Wellington Management Group LLP Active manager | −26K Sold out | 0 | — |
| Eversept Partners, LP Hedge fund | −24K −59.6% | 17K | $453,695 |
| Barclays PLC | −21K −77.3% | 6,133 | $168,536 |
| Federated Hermes, Inc. Active manager | −19K Sold out | 0 | — |
| Qube Research & Technologies Ltd Hedge fund | −18K −25.7% | 51K | $1.4M |
| Hudson Bay Capital Management LP Hedge fund | −17K Sold out | 0 | — |
| Jump Financial, LLC | −11K Sold out | 0 | — |
| Omers Administration Corp | −8,100 Sold out | 0 | — |
| Jpmorgan Chase & Co | −7,577 −14.0% | 46K | $1.3M |
| Entrypoint Capital, LLC | −4,099 −33.1% | 8,285 | $227,672 |
| Brevan Howard Capital Management LP Hedge fund | −3,347 −30.1% | 7,765 | $213,382 |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Adage Capital Partners Gp, L.L.C. Hedge fund | −161K Sold out | 0 | — |
| Marshall Wace, LLP Hedge fund | −146K −89.1% | 18K | $487,357 |
| Arrowstreet Capital, Limited Partnership Hedge fund | −39K Sold out | 0 | — |
| 683 Capital Management, LLC Hedge fund | −28K Sold out | 0 | — |
| Wellington Management Group LLP Active manager | −26K Sold out | 0 | — |
| Eversept Partners, LP Hedge fund | −24K −59.6% | 17K | $453,695 |
| Federated Hermes, Inc. Active manager | −19K Sold out | 0 | — |
| Qube Research & Technologies Ltd Hedge fund | −18K −25.7% | 51K | $1.4M |
| Hudson Bay Capital Management LP Hedge fund | −17K Sold out | 0 | — |
| Brevan Howard Capital Management LP Hedge fund | −3,347 −30.1% | 7,765 | $213,382 |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Ameriprise Financial Inc | 230K | $6.3M |
| Aberdeen Group PLC | 207K | $5.7M |
| Affinity Asset Advisors, LLC | 190K | $5.2M |
| Squadron Capital Management LLC | 160K | $4.4M |
| Woodline Partners LPHedge fund | 151K | $4.1M |
| Driehaus Capital Management LLCActive manager | 150K | $4.1M |
| Ally Bridge Group (NY) LLC | 140K | $3.8M |
| Franklin Resources IncActive manager | 113K | $3.1M |
| Charles Schwab Investment Management IncIndex funds | 29K | $800,437 |
| Bank Of New York Mellon Corp | 24K | $659,933 |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Adage Capital Partners Gp, L.L.C.Hedge fund | 161K | $4.5M |
| Patient Square Capital LP | 136K | $3.8M |
| Arrowstreet Capital, Limited PartnershipHedge fund | 39K | $1.1M |
| Jane Street Group, LLC | 34K | $957,347 |
| Susquehanna International Group, LLP | 33K | $914,335 |
| 683 Capital Management, LLCHedge fund | 28K | $773,198 |
| Wellington Management Group LLPActive manager | 26K | $735,265 |
| Federated Hermes, Inc.Active manager | 19K | $524,586 |
| Hudson Bay Capital Management LPHedge fund | 17K | $466,172 |
| Jump Financial, LLC | 11K | $302,947 |
Who holds the shares
- Institutions reporting
- 92
- Ten largest holders
- 74.3% of 13F-reported shares
- Index fund managers
- 11.2% of 13F-reported shares
- Active managers and hedge funds
- 31.2% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 17 | 11 | 5 | 6 | +1.2M | +25.1% |
| Index fund managers | 9 | 0 | 1 | 0 | +1.1M | +107.9% |
| Other institutions | 40 | 20 | 26 | 8 | +2.8M | +40.2% |
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