MainStreet Bank (MNSB) Institutional Ownership $23.04 -0.13 (-0.54%) As of 12:53 PM Eastern This is a fair market value price provided by Massive. Learn more. Add Compare Share Share Ownership Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsHeadlinesInsider TradesOwnershipSEC FilingsShort InterestTrendsBuy This Stock Institutional Ownership Changes (13F Filings) for MainStreet Bank (NASDAQ:MNSB)CurrentInstitutional OwnershipPercentage52.29%Number ofInstitutional Buyers(last 12 months)30TotalInstitutional Inflows(last 12 months)$21.69MNumber ofInstitutional Sellers(last 12 months)18TotalInstitutional Outflows(last 12 months)$8.87M Get MNSB Insider Trade Alerts Want to know when executives and insiders are buying or selling MainStreet Bank stock? Sign up for InsiderTrades.com's daily newsletter to get the latest insider transactions delivered to your inbox daily. 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Skip Chart & View Institutional Buying and Selling Data MNSB Institutional Buying and Selling by Quarter MainStreet Bank Major Shareholders & Ownership History ExportReporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails5/18/2026 Empowered Funds LLC34,396$764K0.0%+9.7%0.483% 5/14/2026 Renaissance Technologies LLC14,400$320K0.0%-70.6%0.202% 5/14/2026 Arrowstreet Capital Limited Partnership9,732$216K0.0%-15.1%0.137% 5/8/2026 Cassaday & Co Wealth Management LLC2,730$61K0.0%N/A0.037% 5/7/2026 Dimensional Fund Advisors LP166,633$3.70M0.0%+20.4%2.276% 5/5/2026 Bank of New York Mellon Corp16,826$374K0.0%-6.7%0.230% 2/18/2026 Mendon Capital Advisors Corp47,312$963K0.3%+22.8%0.614% 2/18/2026 Empowered Funds LLC31,362$639K0.0%+9.6%0.407% 2/18/2026 Wellington Management Group LLP359,411$7.32M0.0%-12.6%4.662% 2/18/2026 First Manhattan CO. LLC.188,108$3.83M0.0%-10.2%2.440% Get the Latest News and Ratings for MNSB and Related StocksEnter your email address below to receive the latest news and analysts' ratings for MainStreet Bank and its competitors with MarketBeat's FREE daily newsletter. 2/18/2026 Bridgeway Capital Management LLC60,742$1.24M0.0%+17.7%0.788% 2/17/2026 Trexquant Investment LP11,751$239K0.0%N/A0.152% 2/16/2026 Squarepoint Ops LLC34,424$701K0.0%N/A0.446% 2/16/2026 Barclays PLC26,048$530K0.0%+16.6%0.338% 2/13/2026 Kestra Advisory Services LLC1,990$41K0.0%N/A0.026% 2/13/2026 Marshall Wace LLP44,287$902K0.0%+255.6%0.574% 2/13/2026 Fourthstone LLC767,792$15.63M2.9%+50.6%9.958% 2/13/2026 State Street Corp73,562$1.50M0.0%+0.8%0.954% 2/13/2026 Wells Fargo & Company MN7,877$160K0.0%+47.6%0.102% 2/12/2026 Banc Funds Co. LLC421,981$8.59M1.7%-26.4%5.476% 2/12/2026 Dimensional Fund Advisors LP138,351$2.82M0.0%+16.1%1.795% 2/11/2026 Empowered Funds LLC31,362$639K0.0%+9.6%0.407% 2/10/2026 Goldman Sachs Group Inc.11,364$231K0.0%-57.3%0.147% 2/9/2026 Geode Capital Management LLC149,969$3.05M0.0%-1.8%1.946% 2/4/2026 ELCO Management Co. LLC22,312$454K0.3%+94.7%0.289% 1/29/2026 UBS Group AG113,676$2.31M0.0%-15.7%1.474% 1/21/2026 Daytona Street Capital LLC18,000$366K0.2%N/A0.233% 1/1/2026 JPMorgan Chase & Co.6,748$141K0.0%+102.7%0.088% 11/17/2025 Millennium Management LLC32,052$668K0.0%+156.1%0.416% 11/17/2025 Banc Funds Co. LLC573,373$11.94M2.1%-11.9%7.437% 11/17/2025 Bank of America Corp DE4,840$101K0.0%-17.1%0.063% 11/17/2025 Alliancebernstein L.P.674,163$14.04M0.0%+2.7%8.744% 11/14/2025 Creative Planning22,169$462K0.0%+5.6%0.288% 11/14/2025 Mendon Capital Advisors Corp38,526$752K0.3%+18.8%0.500% 11/14/2025 Two Sigma Investments LP10,072$210K0.0%-20.9%0.131% 11/14/2025 Bridgeway Capital Management LLC51,587$1.08M0.0%-9.8%0.669% 11/14/2025 Wellington Management Group LLP411,023$8.56M0.0%-1.3%5.331% 11/13/2025 UBS Group AG134,821$2.81M0.0%+3,454.5%1.749% 11/13/2025 BNP Paribas Financial Markets1,761$37K0.0%+58.5%0.023% 11/13/2025 Russell Investments Group Ltd.3,671$76K0.0%N/A0.048% A 17-year investing experiment investigated in Dublin (Ad)Porter Stansberry flew the Porter and Co. team 3,300 miles to Dublin to investigate a 17-year investing experiment called Project Prophet - and documented everything on film. Rooted in the laws of physics, this quantitative approach challenges conventional wealth-building wisdom. With 17 years of verified data behind it, Porter calls it unlike anything he has seen in nearly 30 years in the business.Watch the full investigation and decide for yourself11/12/2025 Dimensional Fund Advisors LP119,127$2.48M0.0%+1.6%1.545% 11/12/2025 Cresset Asset Management LLC335,723$6.99M0.0%+0.4%4.354% 11/7/2025 GSA Capital Partners LLP11,888$248K0.0%-16.7%0.154% 11/7/2025 JPMorgan Chase & Co.6,748$141K0.0%+102.7%0.088% 11/5/2025 ELCO Management Co. LLC11,462$239K0.1%-21.8%0.149% 11/3/2025 New York State Common Retirement Fund3,484$73K0.0%-35.5%0.045% 9/4/2025 Osaic Holdings Inc.6,709$127K0.0%-47.5%0.087% 8/15/2025 Bank of America Corp DE5,840$110K0.0%+70.4%0.076% 8/14/2025 Mendon Capital Advisors Corp32,428$613K0.3%-35.6%0.421% 8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.3,844$73K0.0%N/A0.050% 8/14/2025 Alliancebernstein L.P.656,648$12.41M0.0%+0.9%8.521% 8/14/2025 Fourthstone LLC338,085$6.39M1.3%+918.4%4.387% 8/13/2025 StoneX Group Inc.23,940$452K0.0%N/A0.311% 8/13/2025 Cresset Asset Management LLC334,469$6.32M0.0%-0.5%4.338% 8/13/2025 New York State Common Retirement Fund5,400$102K0.0%N/A0.070% 8/12/2025 JPMorgan Chase & Co.3,329$63K0.0%+66,480.0%0.043% 8/8/2025 Police & Firemen s Retirement System of New Jersey1,763$33K0.0%N/A0.023% 8/8/2025 Geode Capital Management LLC153,516$2.90M0.0%+128.4%1.994% 8/6/2025 Atlantic Union Bankshares Corp12,600$238K0.0%N/A0.164% 8/4/2025 ELCO Management Co. LLC14,659$277K0.1%-27.9%0.190% 5/21/2025Acadian Asset Management LLC77,186$1.29M0.0%-1.0%1.002% 5/21/2025Mendon Capital Advisors Corp50,319$841K0.4%-2.2%0.653% 5/19/2025Jane Street Group LLC21,270$356K0.0%+33.3%0.276% 5/16/2025Empowered Funds LLC34,329$574K0.0%+3.8%0.446% 5/15/2025First Manhattan CO. LLC.244,577$4.09M0.0%-3.1%3.175% 5/14/2025Cutler Capital Management LLC86,297$1.44M0.5%-21.0%1.120% 5/14/2025Wellington Management Group LLP416,508$6.96M0.0%-2.8%5.407% 5/13/2025Cresset Asset Management LLC336,207$5.62M0.0%+5.1%4.365% 5/13/2025HighTower Advisors LLC10,627$178K0.0%N/A0.138% 5/1/2025ELCO Management Co. LLC20,329$340K0.2%-5.2%0.264% 5/1/2025Hughes Financial Services LLC5,440$91K0.0%N/A0.071% 4/23/2025Salzhauer Michael33,448$559K0.2%-20.4%0.433% 4/21/2025Provident Wealth Management LLC10,932$183K0.1%-24.9%0.141% 2/17/2025Two Sigma Investments LP15,788$286K0.0%-27.5%0.208% 2/17/2025Two Sigma Advisers LP19,600$355K0.0%-11.7%0.258% 2/17/2025Millennium Management LLC58,348$1.06M0.0%-3.5%0.768% 2/17/2025First Manhattan CO. LLC.252,393$4.57M0.0%-1.2%3.321% 2/17/2025Cresset Asset Management LLC319,870$5.79M0.0%+0.5%4.209% 2/17/2025Citadel Advisors LLC17,022$308K0.0%-26.8%0.224% 2/17/2025Bank of America Corp DE4,422$80K0.0%-14.0%0.058% 2/14/2025Jane Street Group LLC15,957$289K0.0%+16.0%0.210% 2/14/2025Mendon Capital Advisors Corp51,443$931K0.5%+136.1%0.677% 2/14/2025Dimensional Fund Advisors LP87,909$1.59M0.0%+6.7%1.157% 2/13/2025Salzhauer Michael41,995$760K0.3%+11.2%0.553% 2/13/2025Fourthstone LLC83,985$1.52M0.3%+7.5%1.105% 2/13/2025Barclays PLC14,540$263K0.0%-13.2%0.191% 2/13/2025Cutler Capital Management LLC109,236$1.98M0.7%-13.9%1.437% 2/13/2025Renaissance Technologies LLC32,300$585K0.0%-15.4%0.425% 2/12/2025Geode Capital Management LLC63,589$1.15M0.0%+1.0%0.837% 2/12/2025StoneX Group Inc.23,940$433K0.0%N/A0.315% Maybe the Greatest Strategy of the Decade (Ad)Nate Bear, Lead Technical Tactician at Monument Traders Alliance, is going public with his highest-conviction trading strategy for the first time. 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His next 'Fast Cash' trade posts before Monday.Click here to get details on Nate Bear's next Fast Cash trade1/29/2025Salzhauer Michael41,995$760K0.3%+11.2%0.553% 1/28/2025Empowered Funds LLC33,064$598K0.0%+1.8%0.435% 12/26/2024JPMorgan Chase & Co.8,743$161K0.0%+4,811.8%0.115% 11/19/2024Barclays PLC16,759$310K0.0%+34.0%0.220% 11/16/2024Geode Capital Management LLC62,970$1.16M0.0%+1.3%0.828% 11/15/2024Barclays PLC16,759$310K0.0%+34.0%0.220% 11/15/2024Jane Street Group LLC13,761$254K0.0%-6.0%0.181% 11/14/2024Fourthstone LLC78,116$1.44M0.3%N/A1.028% 11/6/2024Empowered Funds LLC32,472$599K0.0%-17.9%0.427% 11/5/2024GSA Capital Partners LLP21,149$390K0.0%+53.1%0.278% MNSB Institutional Ownership - Frequently Asked Questions Who are the largest shareholders of MNSB shares? During the previous two years, 51 institutional investors and hedge funds held shares of MainStreet Bank. The most heavily invested institutionals were Fourthstone LLC ($15.63M), Alliancebernstein L.P. ($14.04M), Banc Funds Co. LLC ($8.59M), Wellington Management Group LLP ($7.32M), Cresset Asset Management LLC ($6.99M), First Manhattan CO. LLC. ($3.83M), and Dimensional Fund Advisors LP ($3.70M).Learn more on MainStreet Bank's institutional investors. What percentage of MainStreet Bank's stock is owned by institutional investors? 52.29% of MainStreet Bank's stock is owned by institutional investors. Learn more on MNSB's institutional investor holdings. Which institutional investors have been buying MainStreet Bank's stock? Of the 38 institutional investors that purchased MainStreet Bank's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: Fourthstone LLC ($646.73K), UBS Group AG ($131.03K), Geode Capital Management LLC ($87.75K), Dimensional Fund Advisors LP ($54.92K), StoneX Group Inc. ($47.88K), Mendon Capital Advisors Corp ($45.13K), and Squarepoint Ops LLC ($44.89K). How much institutional buying is happening at MainStreet Bank? Institutional investors have bought a total of 1,090,246 shares in the last 24 months. This purchase volume represents approximately $21.69M in transactions. Which of MainStreet Bank's major shareholders have been selling company stock? Of the 18 institutional investors that sold MainStreet Bank's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Banc Funds Co. LLC ($229.03K), Wellington Management Group LLP ($57.10K), Renaissance Technologies LLC ($34.60K), First Manhattan CO. LLC. ($21.37K), UBS Group AG ($21.15K), Mendon Capital Advisors Corp ($17.89K), and Goldman Sachs Group Inc. ($15.28K). How much institutional selling is happening at MainStreet Bank? Institutional investors have sold a total of 432,410 shares in the last 24 months. This volume of shares sold represents approximately $8.87M in transactions. 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