Sutro Biopharma, Inc.: which funds bought and sold
Institutions that bought and sold Sutro 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, 65 institutions that filed 13F reports for both quarters added to or opened positions in Sutro Biopharma, and 30 cut or closed them. Together they added a net 2.4M shares, +16.7% on what they held at the start of the quarter. Active managers and hedge funds on our list were net sellers of 350K shares (−5.9%); index fund managers were net buyers of 1.7M shares (+128.9%). 42 opened a new position and 14 sold out entirely.
Bought, Q2 2026 65 institutions, 42 of them new holders Sold, Q2 2026 30 institutions, 14 of them sold out
Net change, all compared +2.4M shares (+16.7%)
Net change, active managers −350K shares (−5.9%), 16 bought, 13 sold
Buyers versus sellers
65 bought 14 30 sold
Active managers and hedge funds 16 bought · 13 sold · −350K
Index fund managers 8 bought · 1 sold · +1.7M
Other institutions 41 bought · 16 sold · +1.0M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Blackrock, Inc. Index funds | +890K +382.5% | 1.1M | $37.3M |
| Perceptive Advisors LLC Hedge fund | +590K +82.4% | 1.3M | $43.3M |
| Merck & Co., Inc. | +272K New position | 272K | $9M |
| State Street Corp Index funds | +254K +487.1% | 306K | $10.2M |
| Balyasny Asset Management L.P. Hedge fund | +245K +52.7% | 711K | $23.6M |
| Ameriprise Financial Inc | +245K New position | 245K | $8.1M |
| Geode Capital Management, LLC Index funds | +218K +127.4% | 390K | $12.9M |
| Vanguard Portfolio Management LLC Index funds | +198K New position | 198K | $6.6M |
| Nuveen, LLC | +168K New position | 168K | $5.6M |
| Jpmorgan Chase & Co | +160K New position | 160K | $5.3M |
| Seven Fleet Capital Management LP | +159K New position | 159K | $3.8M |
| Millennium Management LLC Hedge fund | +156K +74.0% | 366K | $12.2M |
| Two Sigma Investments, LP Hedge fund | +137K +209.5% | 202K | $6.7M |
| Goldman Sachs Group Inc | +122K +448.9% | 149K | $5M |
| Qube Research & Technologies Ltd Hedge fund | +107K New position | 107K | $3.5M |
| Affinity Asset Advisors, LLC | +103K +9.6% | 1.2M | $38.9M |
| Mackenzie Financial Corp | +95K New position | 95K | $3.1M |
| Northern Trust Corp Index funds | +93K +279.7% | 126K | $4.2M |
| Y-Intercept (Hong Kong) Ltd | +56K New position | 56K | $1.9M |
| Squarepoint Ops LLC Hedge fund | +56K New position | 56K | $1.8M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Perceptive Advisors LLC Hedge fund | +590K +82.4% | 1.3M | $43.3M |
| Balyasny Asset Management L.P. Hedge fund | +245K +52.7% | 711K | $23.6M |
| Millennium Management LLC Hedge fund | +156K +74.0% | 366K | $12.2M |
| Two Sigma Investments, LP Hedge fund | +137K +209.5% | 202K | $6.7M |
| Qube Research & Technologies Ltd Hedge fund | +107K New position | 107K | $3.5M |
| Squarepoint Ops LLC Hedge fund | +56K New position | 56K | $1.8M |
| Acadian Asset Management LLC Active manager | +38K +11.3% | 374K | $12.4M |
| D. E. Shaw & Co., Inc. Hedge fund | +30K New position | 30K | $1M |
| Price T Rowe Associates Inc Active manager | +14K New position | 14K | $452,000 |
| Wellington Management Group LLP Active manager | +11K New position | 11K | $358,560 |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| RA Capital Management, L.P. Hedge fund | −715K Sold out | 0 | — |
| Point72 Asset Management, L.P. Hedge fund | −454K −65.6% | 238K | $7.9M |
| Adage Capital Partners Gp, L.L.C. Hedge fund | −200K Sold out | 0 | — |
| Opaleye Management Inc. | −191K Sold out | 0 | — |
| UBS Group AG | −184K −46.9% | 209K | $6.9M |
| Eventide Asset Management, LLC | −130K −18.2% | 585K | $19.4M |
| ADAR1 Capital Management, LLC Hedge fund | −120K −23.0% | 404K | $13.4M |
| Susquehanna International Group, LLP | −76K −90.1% | 8,426 | $279,743 |
| Eversept Partners, LP Hedge fund | −73K Sold out | 0 | — |
| Burkehill Global Management, LP Hedge fund | −72K Sold out | 0 | — |
| Orbimed Advisors LLC | −57K −7.1% | 744K | $24.7M |
| Marshall Wace, LLP Hedge fund | −47K −21.3% | 175K | $5.8M |
| Stempoint Capital LP | −47K Sold out | 0 | — |
| Jane Street Group, LLC | −28K Sold out | 0 | — |
| Vanguard Capital Management LLC Index funds | −26K −3.6% | 694K | $23M |
| Brevan Howard Capital Management LP Hedge fund | −19K Sold out | 0 | — |
| Citadel Advisors LLC Hedge fund | −16K −13.2% | 102K | $3.4M |
| Hudson Bay Capital Management LP Hedge fund | −15K Sold out | 0 | — |
| Jump Financial, LLC | −12K Sold out | 0 | — |
| Renaissance Technologies LLC Hedge fund | −12K −11.8% | 86K | $2.9M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| RA Capital Management, L.P. Hedge fund | −715K Sold out | 0 | — |
| Point72 Asset Management, L.P. Hedge fund | −454K −65.6% | 238K | $7.9M |
| Adage Capital Partners Gp, L.L.C. Hedge fund | −200K Sold out | 0 | — |
| ADAR1 Capital Management, LLC Hedge fund | −120K −23.0% | 404K | $13.4M |
| Eversept Partners, LP Hedge fund | −73K Sold out | 0 | — |
| Burkehill Global Management, LP Hedge fund | −72K Sold out | 0 | — |
| Marshall Wace, LLP Hedge fund | −47K −21.3% | 175K | $5.8M |
| Brevan Howard Capital Management LP Hedge fund | −19K Sold out | 0 | — |
| Citadel Advisors LLC Hedge fund | −16K −13.2% | 102K | $3.4M |
| Hudson Bay Capital Management LP Hedge fund | −15K Sold out | 0 | — |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| Merck & Co., Inc. | 272K | $9M |
| Ameriprise Financial Inc | 245K | $8.1M |
| Vanguard Portfolio Management LLCIndex funds | 198K | $6.6M |
| Nuveen, LLC | 168K | $5.6M |
| Jpmorgan Chase & Co | 160K | $5.3M |
| Seven Fleet Capital Management LP | 159K | $3.8M |
| Qube Research & Technologies LtdHedge fund | 107K | $3.5M |
| Mackenzie Financial Corp | 95K | $3.1M |
| Y-Intercept (Hong Kong) Ltd | 56K | $1.9M |
| Squarepoint Ops LLCHedge fund | 56K | $1.8M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| RA Capital Management, L.P.Hedge fund | 715K | $17.8M |
| Adage Capital Partners Gp, L.L.C.Hedge fund | 200K | $5M |
| Opaleye Management Inc. | 191K | $4.7M |
| Eversept Partners, LPHedge fund | 73K | $1.8M |
| Burkehill Global Management, LPHedge fund | 72K | $1.8M |
| Stempoint Capital LP | 47K | $1.2M |
| Jane Street Group, LLC | 28K | $691,502 |
| Brevan Howard Capital Management LPHedge fund | 19K | $468,084 |
| Hudson Bay Capital Management LPHedge fund | 15K | $367,871 |
| Jump Financial, LLC | 12K | $308,510 |
Who holds the shares
- Institutions reporting
- 96
- Ten largest holders
- 57.8% of 13F-reported shares
- Index fund managers
- 18.3% of 13F-reported shares
- Active managers and hedge funds
- 34.0% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 16 | 13 | 9 | 7 | −350K | −5.9% |
| Index fund managers | 8 | 1 | 2 | 0 | +1.7M | +128.9% |
| Other institutions | 41 | 16 | 31 | 7 | +1.0M | +14.8% |