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.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Citadel Advisors Llc | Buy | +26,031 | +127.7% | 46,416 | $1.01M | Q2 2026 | Sep 02, 2026 |
| California State Teachers Retirement System | Sell | -510 | -74.6% | 174 | $3.79K | Q2 2026 | Aug 24, 2026 |
| Mercer Global Advisors Inc | Buy | +10,674 | — | 10,674 | $232.69K | Q2 2026 | Aug 19, 2026 |
| Blue Edge Capital, Llc | Buy | +15,500 | — | 15,500 | $337.90K | Q2 2026 | Aug 17, 2026 |
| Mai Capital Management | Sell | -64,924 | -32.8% | 133,192 | $2.90M | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Sell | -28,599 | -13.8% | 178,112 | $3.88M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Buy | +27,586 | — | 27,586 | $601.38K | Q2 2026 | Aug 14, 2026 |
| Trexquant Investment Lp | Buy | +24,310 | — | 24,310 | $529.96K | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Buy | +24,068 | +76.6% | 55,470 | $1.21M | Q2 2026 | Aug 14, 2026 |
| Aqr Capital Management Llc | Buy | +20,462 | +94.0% | 42,222 | $920.44K | Q2 2026 | Aug 14, 2026 |
| Man Group Plc | Buy | +16,796 | — | 16,796 | $366.15K | Q2 2026 | Aug 14, 2026 |
| Raymond James Financial Inc | Buy | +14,631 | — | 14,631 | $318.95K | Q2 2026 | Aug 14, 2026 |
| Xtx Topco Ltd | Buy | +14,077 | — | 14,077 | $306.88K | Q2 2026 | Aug 14, 2026 |
| Wells Fargo & Company/Mn | Buy | +5,785 | +74.9% | 13,505 | $294.41K | Q2 2026 | Aug 14, 2026 |
| Osaic Holdings, Inc. | Sell | -1,978 | -19.0% | 8,433 | $183.84K | Q2 2026 | Aug 14, 2026 |
| Charles Schwab Investment Management Inc | Buy | +1,866 | +5.1% | 38,463 | $838.49K | Q2 2026 | Aug 14, 2026 |
| Royal Bank Of Canada | Buy | +1,618 | +7.8% | 22,461 | $490.00K | Q2 2026 | Aug 14, 2026 |
| Barclays Plc | Buy | +328 | +9.7% | 3,698 | $80.62K | Q2 2026 | Aug 14, 2026 |
| Mirae Asset Global Etfs Holdings Ltd. | Sell | -215 | -3.6% | 5,805 | $126.55K | Q2 2026 | Aug 14, 2026 |
| Quarry Lp | Buy | +135 | — | 135 | $2.94K | Q2 2026 | Aug 14, 2026 |
| Larson Financial Group Llc | Buy | +99 | — | 99 | $2.16K | Q2 2026 | Aug 14, 2026 |
| Cresset Asset Management, Llc | Sell | -1 | -0.0% | 104,494 | $2.28M | Q2 2026 | Aug 14, 2026 |
| Mackenzie Financial Corp | Buy | +88,203 | — | 88,203 | $1.92M | Q2 2026 | Aug 13, 2026 |
| Renaissance Technologies LLC | Buy | +72,100 | +228.2% | 103,700 | $2.26M | Q2 2026 | Aug 13, 2026 |
| Acadian Asset Management Llc | Buy | +69,193 | +304.6% | 91,906 | $2.00M | Q2 2026 | Aug 13, 2026 |
| Marshall Wace, Llp | Buy | +66,618 | +211.7% | 98,090 | $2.14M | Q2 2026 | Aug 13, 2026 |
| Arrowstreet Capital, Limited Partnership | Buy | +30,689 | — | 30,689 | $669.02K | Q2 2026 | Aug 13, 2026 |
| Quantinno Capital Management Lp | Buy | +20,255 | +80.2% | 45,500 | $991.90K | Q2 2026 | Aug 13, 2026 |
| Morgan Stanley | Buy | +14,945 | +70.2% | 36,244 | $790.12K | Q2 2026 | Aug 13, 2026 |
| Vanguard Portfolio Management Llc | Buy | +11,632 | +16.0% | 84,517 | $1.84M | Q2 2026 | Aug 13, 2026 |
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.
Related JMSB Institutional Insights
- JMSB Overview
- JMSB 13F Institutional Holders
- JMSB Top Institutional Shareholders
- Financial Services Sector Institutional Ownership
- Financial Services Sector Portfolio Overlap
- Institutional Portfolio Overlap & Shared Holdings
- Most Bought Financial Services Stocks By Institutional Investors
- Most Sold Financial Services Stocks By Institutional Investors
- JMSB Insider Trading & SEC Form 4 Activity
- JMSB Articles
- Top Institutional Investor Stock Rankings