STRO
Sutro Biopharma, Inc.
$30.43
+0.19 (+0.63%)
At close · Jul 2
Market Cap
$504.24M
Shares
16,570,439
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 71
Total Value: $352,644,852
Total Shares: 14,156,760
Institutional Ownership Trend
2 quarters
Holder Concentration
Across 71 13F filers · Δ vs Dec 31, 2025Top Holder
8.8%
−5.3 pts
Top 5
35.7%
−8.7 pts
Top 10
60.9%
−6.0 pts
HHI
472
Broadly held−135
Quarterly Activity
vs Dec 31, 2025
New
25
Increased
23
Decreased
12
Sold Out
10
Unchanged
11
Holder count:
+15
Institutional value:
+474.2%
Shares held:
+166.7%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mid SAMSARA BIOCAPITAL, LLC | +858,369 | 1,062,872 | |
| Large Point72 Asset Management, L.P. | +513,023 | 692,111 | |
| Mid ADAR1 Capital Management, LLC | +457,364 | 524,441 | |
| Mid Kynam Capital Management, LP | +392,968 | 872,558 | |
| Mega UBS Group AG | +385,001 | 392,871 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mega MILLENNIUM MANAGEMENT LLC | −207,818 | 210,378 | |
| Mid Eversept Partners, LP | −120,410 | 73,161 | |
| Mid GSA CAPITAL PARTNERS LLP | −63,245 | 25,822 | |
| Large RENAISSANCE TECHNOLOGIES LLC | −25,041 | 97,824 | |
| Mega AQR CAPITAL MANAGEMENT LLC | −9,429 | 8,605 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mid BVF INC/IL | 1,251,788 | $31,182,039 | |
| Mid ORBIMED ADVISORS LLC | 801,144 | $19,956,497 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 720,442 | $17,946,210 | |
| Mid RA CAPITAL MANAGEMENT, L.P. | 715,307 | $17,818,297 | |
| Mid EVENTIDE ASSET MANAGEMENT, LLC | 715,307 | $17,818,297 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD GROUP INC | 375,786 | $4,347,842 | |
| Mid Vestal Point Capital, LP | 243,000 | $2,811,510 | |
| Mid TANG CAPITAL MANAGEMENT LLC | 139,617 | $1,615,368 | |
| Small Spruce Street Capital LP | 75,594 | $874,622 | |
| Mid Shay Capital LLC | 24,255 | $280,630 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid BVF INC/IL | $31,182,039 | 8.84% | 1,251,788 | Shares | Defined | 2026-05-15 | ||||
| Mid Affinity Asset Advisors, LLC | $26,641,718 | 7.55% | 1,069,519 | Shares | Sole | 2026-05-14 | ||||
| Mid SAMSARA BIOCAPITAL, LLC | $26,476,141 | 7.51% | 1,062,872 | Shares | Sole | 2026-05-15 | ||||
| Mid Kynam Capital Management, LP | $21,735,419 | 6.16% | 872,558 | Shares | Sole | 2026-05-15 | ||||
| Mid ORBIMED ADVISORS LLC | $19,956,497 | 5.66% | 801,144 | Shares | Sole | 2026-05-15 | ||||
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $17,946,210 | 5.09% | 720,442 | Shares | Defined | 2026-05-15 | ||||
| Mid RA CAPITAL MANAGEMENT, L.P. | $17,818,297 | 5.05% | 715,307 | Shares | Sole | 2026-05-15 | ||||
| Mid PERCEPTIVE ADVISORS LLC | $17,818,297 | 5.05% | 715,307 | Shares | Sole | 2026-05-29 | ||||
| Mid EVENTIDE ASSET MANAGEMENT, LLC | $17,818,297 | 5.05% | 715,307 | Shares | Sole | 2026-05-15 | ||||
| Large Point72 Asset Management, L.P. | $17,240,485 | 4.89% | 692,111 | Shares | Defined | 2026-05-15 | ||||
| Mid ADAR1 Capital Management, LLC | $13,063,825 | 3.70% | 524,441 | Shares | Sole | 2026-05-18 | ||||
| Small Velan Capital Investment Management LP | $12,757,905 | 3.62% | 512,160 | Shares | Sole | 2026-05-15 | ||||
| Large Balyasny Asset Management L.P. | $11,602,878 | 3.29% | 465,792 | Shares | Sole | 2026-05-15 | ||||
| Large Woodline Partners LP | $11,394,855 | 3.23% | 457,441 | Shares | Sole | 2026-05-15 | ||||
| Mega UBS Group AG | $9,786,415 | 2.78% | 392,871 | Shares | Defined | 2026-05-05 | ||||
| Large ACADIAN ASSET MANAGEMENT LLC | $8,365,101 | 2.37% | 335,813 | Shares | Defined | 2026-05-13 | ||||
| Small ACUTA CAPITAL PARTNERS, LLC | $6,711,376 | 1.90% | 269,425 | Shares | Sole | 2026-05-15 | ||||
| Mega BlackRock, Inc. | $5,796,156 | 1.64% | 232,684 | Shares | Sole | 2026-05-13 | ||||
| Small KVP Capital Advisors, LP | $5,643,983 | 1.60% | 226,575 | Shares | Sole | 2026-05-13 | ||||
| Large MARSHALL WACE, LLP | $5,545,812 | 1.57% | 222,634 | Shares | Other | 2026-05-15 | ||||
| Mega MILLENNIUM MANAGEMENT LLC | $5,240,515 | 1.49% | 210,378 | Shares | Sole | 2026-05-15 | ||||
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. | $4,982,000 | 1.41% | 200,000 | Shares | Sole | 2026-05-15 | ||||
| Small Opaleye Management Inc. | $4,749,614 | 1.35% | 190,671 | Shares | Sole | 2026-05-15 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $4,269,224 | 1.21% | 171,386 | Shares | Defined | 2026-05-15 | ||||
| Mega CITADEL ADVISORS LLC | $2,927,845 | 0.83% | 117,537 | Shares | Defined | 2026-05-15 | ||||
| Large RENAISSANCE TECHNOLOGIES LLC | $2,436,795 | 0.69% | 97,824 | Shares | Sole | 2026-05-14 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $2,362,414 | 0.67% | 94,838 | Shares | Defined | 2026-05-08 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2,114,908 | 0.60% | 84,902 | Shares | Other | 2026-05-15 | ||||
| Mid Eversept Partners, LP | $1,822,440 | 0.52% | 73,161 | Shares | Sole | 2026-05-15 | ||||
| Mid Burkehill Global Management, LP | $1,781,812 | 0.51% | 71,530 | Shares | Sole | 2026-05-15 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $1,623,534 | 0.46% | 65,176 | Shares | Sole | 2026-05-15 | ||||
| Mega STATE STREET CORP | $1,298,259 | 0.37% | 52,118 | Shares | Defined | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $911,706 | 0.26% | 36,600 | Put | Other | 2026-05-15 | ||||
| Mega Fisher Asset Management, LLC | $879,198 | 0.25% | 35,295 | Shares | Defined | 2026-05-05 | ||||
| Large Trexquant Investment LP | $855,484 | 0.24% | 34,343 | Shares | Sole | 2026-05-15 | ||||
| Mega NORTHERN TRUST CORP Bank | $826,165 | 0.23% | 33,166 | Shares | Defined | 2026-05-14 | ||||
| Mega JANE STREET GROUP, LLC | $691,501 | 0.20% | 27,760 | Shares | Defined | 2026-05-12 | ||||
| Mega GOLDMAN SACHS GROUP INC | $677,228 | 0.19% | 27,187 | Shares | Defined | 2026-05-15 | ||||
| Mid GSA CAPITAL PARTNERS LLP | $643,226 | 0.18% | 25,822 | Shares | Sole | 2026-05-08 | ||||
| Mega CITADEL ADVISORS LLC | $617,768 | 0.18% | 24,800 | Put | Defined | 2026-05-15 | ||||
| Small STEMPOINT CAPITAL LP | $580,278 | 0.16% | 23,295 | Shares | Sole | 2026-05-18 | ||||
| Mega BANK OF AMERICA CORP /DE/ Bank | $470,126 | 0.13% | 18,873 | Shares | Defined | 2026-05-18 | ||||
| Mega CITIGROUP INC | $469,428 | 0.13% | 18,845 | Shares | Defined | 2026-05-11 | ||||
| Mid Brevan Howard Capital Management LP | $468,083 | 0.13% | 18,791 | Shares | Defined | 2026-05-15 | ||||
| Mega Invesco Ltd. | $427,580 | 0.12% | 17,165 | Shares | Defined | 2026-05-12 | ||||
| Mid RBF Capital, LLC | $380,425 | 0.11% | 15,272 | Shares | Sole | 2026-05-18 | ||||
| Large Hudson Bay Capital Management LP | $367,870 | 0.10% | 14,768 | Shares | Defined | 2026-05-13 | ||||
| Mid Sigma Planning Corp | $311,873 | 0.09% | 12,520 | Shares | Sole | 2026-05-04 | ||||
| Mid Jump Financial, LLC | $308,510 | 0.09% | 12,385 | Shares | Defined | 2026-05-14 | ||||
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $263,473 | 0.07% | 10,577 | Shares | Sole | 2026-05-15 | ||||
| Mega MORGAN STANLEY | $262,276 | 0.07% | 10,529 | Shares | Defined | 2026-05-15 | ||||
| Large OMERS ADMINISTRATION Corp | $216,717 | 0.06% | 8,700 | Shares | Sole | 2026-05-15 | ||||
| Mega AQR CAPITAL MANAGEMENT LLC | $214,348 | 0.06% | 8,605 | Shares | Other | 2026-05-15 | ||||
| Mid XTX Topco Ltd | $204,336 | 0.06% | 8,203 | Shares | Defined | 2026-05-15 | ||||
| Small Persistent Asset Partners Ltd | $184,608 | 0.05% | 7,411 | Shares | Sole | 2026-05-12 | ||||
| Large State of Tennessee, Department of Treasury | $184,334 | 0.05% | 7,400 | Shares | Sole | 2026-05-15 | ||||
| Mega Vanguard Global Advisers, LLC | $178,903 | 0.05% | 7,182 | Shares | Defined | 2026-05-08 | ||||
| Large OSAIC HOLDINGS, INC. | $31,884 | 0.01% | 1,280 | Shares | Defined | 2026-05-15 | ||||
| Mega FMR LLC | $26,155 | 0.01% | 1,050 | Shares | Defined | 2026-05-15 | ||||
| Small FNY Investment Advisers, LLC | $24,910 | 0.01% | 1,000 | Shares | Sole | 2026-04-15 | ||||
| Large CWM, LLC | $24,486 | 0.01% | 983 | Shares | Sole | 2026-05-14 | ||||
| Micro Owl Creek Wealth Partners LLC | $12,230 | 0.00% | 491 | Shares | Sole | 2026-05-14 | ||||
| Small Physician Wealth Advisors, Inc. | $4,533 | 0.00% | 182 | Shares | Sole | 2026-04-24 | ||||
| Mega BARCLAYS PLC | $3,462 | 0.00% | 139 | Shares | Defined | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $2,765 | 0.00% | 111 | Shares | Defined | 2026-05-12 | ||||
| Micro Avion Wealth | $1,793 | 0.00% | 72 | Shares | Sole | 2026-05-01 | ||||
| Mid SIMPLEX TRADING, LLC | $1,544 | 0.00% | 62 | Shares | Sole | 2026-05-14 | ||||
| Mega PNC FINANCIAL SERVICES GROUP, INC. | $1,544 | 0.00% | 62 | Shares | Defined | 2026-05-08 | ||||
| Large NISA INVESTMENT ADVISORS, LLC | $1,096 | 0.00% | 44 | Shares | Sole | 2026-04-30 | ||||
| Mid Arax Advisory Partners | $1,021 | 0.00% | 41 | Shares | Sole | 2026-05-13 | ||||
| Micro HighMark Wealth Management LLC | $572 | 0.00% | 23 | Shares | Sole | 2026-05-06 | ||||
| Mega ROYAL BANK OF CANADA Bank | $298 | 0.00% | 12 | Shares | Sole | 2026-05-15 | ||||
| Large FIFTH THIRD BANCORP Bank | $49 | 0.00% | 2 | Shares | Defined | 2026-05-01 | ||||
| No holders match your search. | ||||||||||