Zenas Biopharma, Inc.: which funds bought and sold
Institutions that bought and sold Zenas Biopharma 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, 88 institutions that filed 13F reports for both quarters added to or opened positions in Zenas Biopharma, and 61 cut or closed them. Together they added a net 3.5M shares, +6.0% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 3.0M shares (+12.1%); index fund managers were net buyers of 1.9M shares (+29.3%). 27 opened a new position and 22 sold out entirely.
Bought, Q2 2026 88 institutions, 27 of them new holders Sold, Q2 2026 61 institutions, 22 of them sold out
Net change, all compared +3.5M shares (+6.0%)
Net change, active managers +3.0M shares (+12.1%), 24 bought, 9 sold
Buyers versus sellers
88 bought 15 61 sold
Active managers and hedge funds 24 bought · 9 sold · +3.0M
Index fund managers 9 bought · 1 sold · +1.9M
Other institutions 55 bought · 51 sold · −1.3M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Price T Rowe Associates Inc Active manager | +870K +243.4% | 1.2M | $31.1M |
| Bank Of America Corp | +843K +217.0% | 1.2M | $31.2M |
| Blackrock, Inc. Index funds | +649K +31.8% | 2.7M | $68.2M |
| State Street Corp Index funds | +584K +39.7% | 2.1M | $52.2M |
| Two Sigma Investments, LP Hedge fund | +540K +196.4% | 815K | $20.7M |
| FMR LLC Active manager | +425K +4.7% | 9.5M | $241M |
| Wellington Management Group LLP Active manager | +348K +27.9% | 1.6M | $40.5M |
| Geode Capital Management, LLC Index funds | +227K +34.6% | 883K | $22.4M |
| Alliancebernstein L.P. Active manager | +206K +23.0% | 1.1M | $21.6M |
| Millennium Management LLC Hedge fund | +184K +38.5% | 660K | $16.8M |
| Vestal Point Capital, LP Hedge fund | +165K +82.5% | 365K | $9.3M |
| BNP Paribas Financial Markets | +141K +1411.0% | 151K | $3.8M |
| Voleon Capital Management LP Hedge fund | +138K +464.5% | 167K | $4.2M |
| Citadel Advisors LLC Hedge fund | +129K +192.8% | 196K | $5M |
| Vanguard Capital Management LLC Index funds | +109K +8.8% | 1.4M | $34.4M |
| Northern Trust Corp Index funds | +87K +44.4% | 281K | $7.1M |
| Barclays PLC | +86K +291.6% | 116K | $2.9M |
| Walleye Capital LLC Hedge fund | +84K +66.9% | 209K | $5.3M |
| Squarepoint Ops LLC Hedge fund | +82K +192.0% | 125K | $3.2M |
| Charles Schwab Investment Management Inc Index funds | +78K +34.6% | 302K | $7.7M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Price T Rowe Associates Inc Active manager | +870K +243.4% | 1.2M | $31.1M |
| Two Sigma Investments, LP Hedge fund | +540K +196.4% | 815K | $20.7M |
| FMR LLC Active manager | +425K +4.7% | 9.5M | $241M |
| Wellington Management Group LLP Active manager | +348K +27.9% | 1.6M | $40.5M |
| Alliancebernstein L.P. Active manager | +206K +23.0% | 1.1M | $21.6M |
| Millennium Management LLC Hedge fund | +184K +38.5% | 660K | $16.8M |
| Vestal Point Capital, LP Hedge fund | +165K +82.5% | 365K | $9.3M |
| Voleon Capital Management LP Hedge fund | +138K +464.5% | 167K | $4.2M |
| Citadel Advisors LLC Hedge fund | +129K +192.8% | 196K | $5M |
| Walleye Capital LLC Hedge fund | +84K +66.9% | 209K | $5.3M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Silverarc Capital Management, LLC | −626K −55.1% | 510K | $12.9M |
| Great Point Partners LLC | −524K Sold out | 0 | — |
| Jefferies Financial Group Inc. | −220K Sold out | 0 | — |
| UBS Group AG | −189K −51.5% | 178K | $4.5M |
| Marshall Wace, LLP Hedge fund | −178K −35.6% | 323K | $8.2M |
| SEB Asset Management AB | −164K Sold out | 0 | — |
| Maven Securities Ltd | −150K Sold out | 0 | — |
| Monashee Investment Management LLC | −150K Sold out | 0 | — |
| Polar Capital Holdings PLC Active manager | −136K −5.3% | 2.4M | $61.2M |
| Sio Capital Management, LLC | −123K −37.1% | 209K | $5.3M |
| Goldman Sachs Group Inc | −110K −28.9% | 271K | $6.9M |
| Pivotal Bioventure Partners Investment Advisor LLC | −101K −17.1% | 491K | $12.5M |
| Invesco Ltd. | −95K −83.3% | 19K | $481,053 |
| Balyasny Asset Management L.P. Hedge fund | −90K −13.5% | 577K | $14.6M |
| Arrowmark Colorado Holdings LLC | −86K −13.0% | 573K | $14.6M |
| Susquehanna International Group, LLP | −85K Sold out | 0 | — |
| Voloridge Investment Management, LLC Hedge fund | −77K Sold out | 0 | — |
| Atom Investors LP | −70K −65.3% | 37K | $942,842 |
| Dafna Capital Management LLC | −43K Sold out | 0 | — |
| Schroder Investment Management Group Active manager | −34K Sold out | 0 | — |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Marshall Wace, LLP Hedge fund | −178K −35.6% | 323K | $8.2M |
| Polar Capital Holdings PLC Active manager | −136K −5.3% | 2.4M | $61.2M |
| Balyasny Asset Management L.P. Hedge fund | −90K −13.5% | 577K | $14.6M |
| Voloridge Investment Management, LLC Hedge fund | −77K Sold out | 0 | — |
| Schroder Investment Management Group Active manager | −34K Sold out | 0 | — |
| Jacobs Levy Equity Management, Inc Active manager | −28K Sold out | 0 | — |
| AQR Capital Management LLC Hedge fund | −20K −39.0% | 31K | $789,319 |
| Schonfeld Strategic Advisors LLC Hedge fund | −18K Sold out | 0 | — |
| Federated Hermes, Inc. Active manager | −10K −0.3% | 3.1M | $79.1M |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Verition Fund Management LLCHedge fund | 73K | $1.9M |
| Csm Advisors, LLC | 68K | $1.7M |
| Los Angeles Capital Management LLCActive manager | 48K | $1.2M |
| Boothbay Fund Management, LLCHedge fund | 33K | $844,646 |
| Dcf Advisers, LLC | 28K | $715,310 |
| Y-Intercept (Hong Kong) Ltd | 17K | $439,886 |
| Point72 Asset Management, L.P.Hedge fund | 16K | $409,532 |
| Nordea Investment Management AB | 15K | $382,872 |
| Brevan Howard Capital Management LPHedge fund | 15K | $372,426 |
| Engineers Gate Manager LPHedge fund | 13K | $329,432 |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Great Point Partners LLC | 524K | $10.2M |
| Jefferies Financial Group Inc. | 220K | $4.3M |
| SEB Asset Management AB | 164K | $3.2M |
| Maven Securities Ltd | 150K | $2.9M |
| Monashee Investment Management LLC | 150K | $2.9M |
| Susquehanna International Group, LLP | 85K | $1.7M |
| Voloridge Investment Management, LLCHedge fund | 77K | $1.5M |
| Dafna Capital Management LLC | 43K | $830,875 |
| Schroder Investment Management GroupActive manager | 34K | $614,128 |
| Jacobs Levy Equity Management, IncActive manager | 28K | $538,251 |
Who holds the shares
- Institutions reporting
- 144
- Ten largest holders
- 61.9% of 13F-reported shares
- Index fund managers
- 13.4% of 13F-reported shares
- Active managers and hedge funds
- 44.8% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 24 | 9 | 8 | 4 | +3.0M | +12.1% |
| Index fund managers | 9 | 1 | 0 | 0 | +1.9M | +29.3% |
| Other institutions | 55 | 51 | 19 | 18 | −1.3M | −5.0% |