JOHN MARSHALL BANCORP INC (JMSB) Institutional Ownership Changes & 13F Activity

JOHN MARSHALL BANCORP INC (JMSB). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Mackenzie Financial Corp, Renaissance Technologies LLC, Acadian Asset Management Llc, Marshall Wace, Llp, and Mai Capital Management.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Citadel Advisors LlcBuy+26,031+127.7%46,416$1.01MQ2 2026Sep 02, 2026
California State Teachers Retirement SystemSell-510-74.6%174$3.79KQ2 2026Aug 24, 2026
Mercer Global Advisors IncBuy+10,67410,674$232.69KQ2 2026Aug 19, 2026
Blue Edge Capital, LlcBuy+15,50015,500$337.90KQ2 2026Aug 17, 2026
Mai Capital ManagementSell-64,924-32.8%133,192$2.90MQ2 2026Aug 14, 2026
Bank Of America CorpSell-28,599-13.8%178,112$3.88MQ2 2026Aug 14, 2026
Millennium Management LlcBuy+27,58627,586$601.38KQ2 2026Aug 14, 2026
Trexquant Investment LpBuy+24,31024,310$529.96KQ2 2026Aug 14, 2026
Goldman Sachs Group IncBuy+24,068+76.6%55,470$1.21MQ2 2026Aug 14, 2026
Aqr Capital Management LlcBuy+20,462+94.0%42,222$920.44KQ2 2026Aug 14, 2026
Man Group PlcBuy+16,79616,796$366.15KQ2 2026Aug 14, 2026
Raymond James Financial IncBuy+14,63114,631$318.95KQ2 2026Aug 14, 2026
Xtx Topco LtdBuy+14,07714,077$306.88KQ2 2026Aug 14, 2026
Wells Fargo & Company/MnBuy+5,785+74.9%13,505$294.41KQ2 2026Aug 14, 2026
Osaic Holdings, Inc.Sell-1,978-19.0%8,433$183.84KQ2 2026Aug 14, 2026
Charles Schwab Investment Management IncBuy+1,866+5.1%38,463$838.49KQ2 2026Aug 14, 2026
Royal Bank Of CanadaBuy+1,618+7.8%22,461$490.00KQ2 2026Aug 14, 2026
Barclays PlcBuy+328+9.7%3,698$80.62KQ2 2026Aug 14, 2026
Mirae Asset Global Etfs Holdings Ltd.Sell-215-3.6%5,805$126.55KQ2 2026Aug 14, 2026
Quarry LpBuy+135135$2.94KQ2 2026Aug 14, 2026
Larson Financial Group LlcBuy+9999$2.16KQ2 2026Aug 14, 2026
Cresset Asset Management, LlcSell-1-0.0%104,494$2.28MQ2 2026Aug 14, 2026
Mackenzie Financial CorpBuy+88,20388,203$1.92MQ2 2026Aug 13, 2026
Renaissance Technologies LLCBuy+72,100+228.2%103,700$2.26MQ2 2026Aug 13, 2026
Acadian Asset Management LlcBuy+69,193+304.6%91,906$2.00MQ2 2026Aug 13, 2026
Marshall Wace, LlpBuy+66,618+211.7%98,090$2.14MQ2 2026Aug 13, 2026
Arrowstreet Capital, Limited PartnershipBuy+30,68930,689$669.02KQ2 2026Aug 13, 2026
Quantinno Capital Management LpBuy+20,255+80.2%45,500$991.90KQ2 2026Aug 13, 2026
Morgan StanleyBuy+14,945+70.2%36,244$790.12KQ2 2026Aug 13, 2026
Vanguard Portfolio Management LlcBuy+11,632+16.0%84,517$1.84MQ2 2026Aug 13, 2026
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Frequently asked questions about JMSB activity

  • Which institutional owners are buying JMSB?

    Institutional owners buying JMSB include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in JMSB activity?

    "Buy" means an investor increased their reported position in JMSB compared to the prior reporting period. This reflects growing exposure to JOHN MARSHALL BANCORP INC (JMSB) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in JMSB increasing?

    Institutional interest in JMSB can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.