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Sutro Biopharma (STRO) Institutional Ownership

Sutro Biopharma logo
$15.34 -0.14 (-0.90%)
Closing price 09/18/2026 04:00 PM Eastern
Extended Trading
$15.29 -0.05 (-0.33%)
As of 09/18/2026 07:30 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Sutro Biopharma (NASDAQ:STRO)

Current
Institutional Ownership
Percentage
96.99%
Number of
Institutional Buyers
(last 12 months)
24
Total
Institutional Inflows
(last 12 months)
$94.59M
Number of
Institutional Sellers
(last 12 months)
25
Total
Institutional Outflows
(last 12 months)
$242.68M
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STRO Institutional Buying and Selling by Quarter

Sutro Biopharma Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
9/9/2026 Squarepoint Ops LLC55,539$1.84M0.0%N/A0.335%
8/22/2026 Seven Fleet Capital Management LP159,118$5.28M0.9%N/A0.960%
8/19/2026 Wellington Management Group LLP10,800$359K0.0%N/A0.065%
8/7/2026 Merck & Co. Inc.272,351$9.04M0.0%N/A1.644%
8/6/2026 Bank of New York Mellon Corp41,369$1.37M0.0%N/A0.250%
5/29/2026 Perceptive Advisors LLC715,307$17.82M0.3%N/A4.317%
5/19/2026 Bank of America Corp DE18,873$470K0.0%+348.1%0.114%
5/19/2026 Stempoint Capital LP23,295$580K0.1%N/A0.141%
5/18/2026 ADAR1 Capital Management LLC524,441$13.06M0.8%+681.8%3.165%
5/18/2026 Eversept Partners LP73,161$1.82M0.1%-62.2%0.442%
5/16/2026 Orbimed Advisors LLC801,144$19.96M0.4%N/A4.835%
5/15/2026 OMERS ADMINISTRATION Corp8,700$217K0.0%-21.1%0.053%
5/15/2026 Affinity Asset Advisors LLC1,069,519$26.64M1.4%+42.9%6.455%
5/14/2026 Renaissance Technologies LLC97,824$2.44M0.0%-20.4%0.590%
5/5/2026 Sigma Planning Corp12,520$312K0.0%N/A0.076%
2/19/2026 Invesco Ltd.16,970$196K0.0%-87.4%0.199%
2/18/2026 State of Tennessee Department of Treasury7,400$86K0.0%N/A0.087%
2/18/2026 Vestal Point Capital LP243,000$2.81M0.1%-90.7%2.854%
2/18/2026 Tang Capital Management LLC139,617$1.62M0.1%-95.1%1.640%
2/18/2026 Opaleye Management Inc.190,671$2.21M0.3%N/A2.239%
2/18/2026 Millennium Management LLC418,196$4.84M0.0%-90.8%4.912%
2/18/2026 Eversept Partners LP193,571$2.24M0.1%-91.6%2.274%
2/18/2026 Balyasny Asset Management L.P.230,049$2.66M0.0%N/A2.703%
2/17/2026 ADAR1 Capital Management LLC67,077$776K0.1%N/A0.788%
2/17/2026 AQR Capital Management LLC18,034$209K0.0%-94.9%0.212%
2/17/2026 Adage Capital Partners GP L.L.C.200,000$2.31M0.0%-90.0%2.350%
2/17/2026 RBF Capital LLC15,272$177K0.0%-90.0%0.179%
2/16/2026 OMERS ADMINISTRATION Corp11,023$128K0.0%-88.4%0.130%
2/16/2026 Spruce Street Capital LP75,594$875K0.3%N/A0.888%
2/13/2026 Marshall Wace LLP85,615$991K0.0%-27.7%1.006%
2/13/2026 Affinity Asset Advisors LLC748,382$8.66M0.5%-0.6%8.794%
2/13/2026 Velan Capital Investment Management LP312,000$3.61M2.1%-90.0%3.666%
2/13/2026 State Street Corp34,266$396K0.0%-90.0%0.403%
2/12/2026 Jane Street Group LLC22,945$265K0.0%N/A0.270%
2/12/2026 Renaissance Technologies LLC122,865$1.42M0.0%-91.4%1.444%
2/10/2026 Goldman Sachs Group Inc.15,669$181K0.0%-82.2%0.184%
2/10/2026 AJU IB Investment Co. Ltd.17,500$202K1.1%-90.0%0.206%
2/9/2026 Geode Capital Management LLC83,979$972K0.0%-89.8%0.987%
2/9/2026 Fisher Asset Management LLC35,305$408K0.0%-90.0%0.415%
2/6/2026 GSA Capital Partners LLP89,067$1.03M0.1%-49.1%1.047%
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1/1/2026 JPMorgan Chase & Co.76,158$66K0.0%-56.1%0.895%
11/17/2025 Jacobs Levy Equity Management Inc.445,750$387K0.0%N/A0.524%
11/17/2025 Velan Capital Investment Management LP3,120,000$2.71M2.5%+2.0%3.665%
11/17/2025 Susquehanna International Group LLP103,592$90K0.0%-57.8%0.122%
11/17/2025 Qube Research & Technologies Ltd65,226$57K0.0%-43.5%0.077%
11/17/2025 Millennium Management LLC4,524,350$3.93M0.0%-4.4%5.314%
11/17/2025 Bank of America Corp DE119,434$104K0.0%+51.3%0.140%
11/14/2025 Shay Capital LLC312,051$271K0.0%+20.1%0.367%
11/14/2025 Two Sigma Investments LP396,785$345K0.0%+244.8%0.466%
11/14/2025 Bridgeway Capital Management LLC42,900$37K0.0%+232.6%0.050%
11/13/2025 UBS Group AG1,845,839$1.60M0.0%+14.0%2.168%
11/12/2025 Dimensional Fund Advisors LP197,516$172K0.0%-68.6%0.232%
11/7/2025 GSA Capital Partners LLP174,843$152K0.0%N/A0.206%
11/7/2025Vanguard Group Inc.3,682,986$3.20M0.0%-10.5%4.345%
11/7/2025 JPMorgan Chase & Co.76,158$66K0.0%-56.1%0.090%
11/5/2025 Savant Capital LLC37,713$33K0.0%-28.1%0.044%
8/15/2025 Shay Capital LLC259,889$186K0.0%+26.4%0.307%
8/15/2025 Bank of America Corp DE78,946$56K0.0%-27.6%0.093%
8/14/2025 Jane Street Group LLC688,850$492K0.0%N/A0.813%
8/14/2025 RBF Capital LLC160,000$114K0.0%N/A0.189%
8/14/2025 Velan Capital Investment Management LP3,060,000$2.19M2.2%+197.1%3.610%
8/14/2025 Qube Research & Technologies Ltd115,401$82K0.0%N/A0.136%
8/14/2025 Cerity Partners LLC105,437$75K0.0%+169.9%0.124%
8/13/2025 Marshall Wace LLP234,431$166K0.0%N/A0.277%
8/12/2025 Prudential Financial Inc.35,500$25K0.0%-94.1%0.042%
8/12/2025 JPMorgan Chase & Co.173,477$124K0.0%-42.4%0.205%
8/12/2025 Catalyst Funds Management Pty Ltd38,500$27K0.0%N/A0.045%
8/8/2025 Geode Capital Management LLC816,915$583K0.0%-56.8%0.967%
8/7/2025 Acadian Asset Management LLC3,042,238$2.17M0.0%-2.9%3.602%
8/6/2025 Savant Capital LLC52,416$37K0.0%N/A0.062%
8/1/2025 Y Intercept Hong Kong Ltd66,591$48K0.0%N/A0.079%
7/25/2025CWM LLC56,657$40K0.0%+73.2%0.067%
7/25/2025 Vanguard Personalized Indexing Management LLC60,617$43K0.0%+174.8%0.072%
5/28/2025Strs Ohio152,800$99K0.0%N/A0.181%
5/21/2025Acadian Asset Management LLC3,134,586$2.04M0.0%+78.9%3.711%
5/16/2025AQR Capital Management LLC1,320,917$859K0.0%+1,052.8%1.566%
5/15/2025Vestal Point Capital LP2,600,000$1.69M0.1%+1.2%3.082%
5/15/2025RA Capital Management L.P.4,434,637$2.89M0.0%N/A5.257%
5/15/2025Velan Capital Investment Management LP1,030,000$670K0.7%+3,333.3%1.221%
5/15/2025State of Wyoming94,932$62K0.0%N/A0.113%
5/14/2025Affinity Asset Advisors LLC752,722$490K0.0%N/A0.892%
5/12/2025Nuveen LLC290,897$189K0.0%N/A0.345%
5/12/2025Invesco Ltd.92,139$60K0.0%+137.8%0.109%
5/9/2025Charles Schwab Investment Management Inc.199,901$130K0.0%-20.7%0.237%
4/30/2025Cerity Partners LLC39,065$25K0.0%N/A0.046%
4/28/2025Vontobel Holding Ltd.50,000$33K0.0%+100.0%0.059%
4/17/2025Exchange Traded Concepts LLC136,623$89K0.0%+201.9%0.166%
2/17/2025Velan Capital Investment Management LP30,000$55K0.0%N/A0.036%
2/17/2025Vestal Point Capital LP2,570,000$4.73M0.3%N/A3.117%
2/17/2025Two Sigma Investments LP316,292$582K0.0%-35.7%0.384%
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2/17/2025Two Sigma Advisers LP547,800$1.01M0.0%-7.3%0.664%
2/17/2025Suvretta Capital Management LLC7,462,495$13.73M0.5%+3.8%9.050%
2/17/2025Shay Capital LLC203,601$375K0.1%N/A0.247%
2/17/2025Sherbrooke Park Advisers LLC33,640$62K0.0%-73.9%0.041%
2/17/2025Point72 Asset Management L.P.2,197,538$4.04M0.0%-26.7%2.665%
2/17/2025ProShare Advisors LLC26,961$50K0.0%+74.3%0.033%
2/17/2025MPM Bioimpact LLC2,160,062$3.98M0.6%-23.7%2.620%
2/17/2025Parkman Healthcare Partners LLC1,727,925$3.18M0.4%+0.7%2.095%
2/17/2025Man Group plc132,406$244K0.0%-19.2%0.161%
2/17/2025Nuveen Asset Management LLC1,323,777$2.44M0.0%+10.3%1.605%


STRO Institutional Ownership - Frequently Asked Questions

During the previous two years, 99 institutional investors and hedge funds held shares of Sutro Biopharma. The most heavily invested institutionals were Affinity Asset Advisors LLC ($26.64M), Orbimed Advisors LLC ($19.96M), Perceptive Advisors LLC ($17.82M), Suvretta Capital Management LLC ($13.73M), ADAR1 Capital Management LLC ($13.06M), Merck & Co. Inc. ($9.04M), and Seven Fleet Capital Management LP ($5.28M).Learn more on Sutro Biopharma's institutional investors.

96.99% of Sutro Biopharma's stock is owned by institutional investors. Learn more on STRO's institutional investor holdings.

Of the 75 institutional investors that purchased Sutro Biopharma's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: RA Capital Management L.P. ($4.43M), Velan Capital Investment Management LP ($3.12M), Vestal Point Capital LP ($2.60M), Acadian Asset Management LLC ($1.38M), AQR Capital Management LLC ($1.21M), Affinity Asset Advisors LLC ($1.07M), and Bank of Montreal Can ($814.96K).

Institutional investors have bought a total of 4,790,256 shares in the last 24 months. This purchase volume represents approximately $94.59M in transactions.

Of the 25 institutional investors that sold Sutro Biopharma's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Millennium Management LLC ($4.31M), Velan Capital Investment Management LP ($2.81M), Tang Capital Management LLC ($2.69M), Vestal Point Capital LP ($2.36M), Eversept Partners LP ($2.22M), Adage Capital Partners GP L.L.C. ($1.80M), and Renaissance Technologies LLC ($1.33M).

Institutional investors have sold a total of 21,171,764 shares in the last 24 months. This volume of shares sold represents approximately $242.68M in transactions.


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Institutional ownership data for NASDAQ:STRO is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 9/9/2026. New 13F filings are added each quarter as they're published.
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