MNSB MainStreet Bancshares, Inc.
MainStreet Bancshares, Inc. (MNSB) Institutional Ownership
What the institutions did with MNSB last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BANC FUNDS CO LLC | 545.7K | 13.4% |
| ALLIANCEBERNSTEIN L.P. | 418.4K | 10.3% |
| BlackRock, Inc. | 404.0K | 9.9% |
| WELLINGTON MANAGEMENT GROUP LLP | 337.0K | 8.3% |
| VANGUARD CAPITAL MANAGEMENT LLC | 262.5K | 6.5% |
| DIMENSIONAL FUND ADVISORS LP | 205.0K | 5.0% |
| ACADIAN ASSET MANAGEMENT LLC | 183.2K | 4.5% |
| FIRST MANHATTAN CO. LLC. | 161.7K | 4.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 152.2K | 3.7% |
| MARSHALL WACE, LLP | 120.2K | 3.0% |
| STATE STREET CORP | 109.5K | 2.7% |
| AMERICAN CENTURY COMPANIES INC | 101.6K | 2.5% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 66.6K | 1.6% |
| Cresset Asset Management, LLC | 59.0K | 1.5% |
| CITADEL ADVISORS LLC | 58.3K | 1.4% |
| NORTHERN TRUST CORP | 48.2K | 1.2% |
| Fourthstone LLC | 47.4K | 1.2% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 42.8K | 1.1% |
| Trexquant Investment LP | 39.5K | 1.0% |
| VANGUARD FIDUCIARY TRUST CO | 39.0K | 1.0% |
| Squarepoint Ops LLC | 37.2K | 0.9% |
| Empowered Funds, LLC | 37.2K | 0.9% |
| UBS Group AG | 33.1K | 0.8% |
| Connor, Clark & Lunn Investment Management Ltd. | 30.4K | 0.7% |
| AQR CAPITAL MANAGEMENT LLC | 29.4K | 0.7% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Fourthstone LLC | Reduced | 384.8K | 47.4K | -337.4K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 554.7K | 418.4K | -136.3K |
| UBS Group AG | Reduced | 113.2K | 33.1K | -80.1K |
| BlackRock, Inc. | Increased | 347.6K | 404.0K | +56.4K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 134.0K | 183.2K | +49.3K |
| AMERICAN CENTURY COMPANIES INC | Increased | 52.5K | 101.6K | +49.1K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 301.5K | 262.5K | -39.0K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 166.6K | 205.0K | +38.4K |
| CITADEL ADVISORS LLC | Increased | 23.5K | 58.3K | +34.8K |
| AQR CAPITAL MANAGEMENT LLC | New | 0 | 29.4K | +29.4K |
| FIRST MANHATTAN CO. LLC. | Reduced | 188.1K | 161.7K | -26.4K |
| STRS OHIO | Increased | 500 | 26.1K | +25.6K |
| HRT FINANCIAL LP | New | 0 | 24.3K | +24.3K |
| MENDON CAPITAL ADVISORS CORP | Reduced | 47.3K | 23.4K | -23.9K |
| GSA CAPITAL PARTNERS LLP | New | 0 | 23.2K | +23.2K |
| Trexquant Investment LP | Increased | 17.0K | 39.5K | +22.5K |
| R Squared Ltd | New | 0 | 20.8K | +20.8K |
| TWO SIGMA INVESTMENTS, LP | New | 0 | 16.7K | +16.7K |
| WELLINGTON MANAGEMENT GROUP LLP | Reduced | 352.7K | 337.0K | -15.7K |
| BANC FUNDS CO LLC | Increased | 530.9K | 545.7K | +14.7K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | New | 0 | 14.4K | +14.4K |
| MARSHALL WACE, LLP | Increased | 106.2K | 120.2K | +14.0K |
| Squarepoint Ops LLC | Reduced | 50.9K | 37.2K | -13.6K |
| Cresset Asset Management, LLC | Reduced | 72.0K | 59.0K | -13.0K |
| ELCO Management Co., LLC | Reduced | 22.3K | 10.2K | -12.1K |
| Point72 Asset Management, L.P. | New | 0 | 10.5K | +10.5K |
| SEI INVESTMENTS CO | New | 0 | 9.9K | +9.9K |
| Quadrature Capital Ltd | New | 0 | 9.7K | +9.7K |
| STATE STREET CORP | Increased | 100.2K | 109.5K | +9.3K |
| Russell Investments Group, Ltd. | Increased | 777 | 9.8K | +9.1K |
| OCCUDO QUANTITATIVE STRATEGIES LP | New | 0 | 9.0K | +9.0K |
| Nuveen, LLC | Increased | 9.2K | 17.9K | +8.7K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 147.2K | 152.2K | +5.0K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 2.8K | 7.4K | +4.6K |
| XTX Topco Ltd | Increased | 10.1K | 13.9K | +3.8K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 14.4K | 11.0K | -3.4K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 39.7K | 42.8K | +3.2K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 63.8K | 66.6K | +2.8K |
| Empowered Funds, LLC | Increased | 34.4K | 37.2K | +2.8K |
| WELLS FARGO & COMPANY/MN | Increased | 2.6K | 5.3K | +2.7K |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | 33.1K | 30.4K | -2.7K |
| CITIGROUP INC | Increased | 320 | 2.9K | +2.6K |
| GOLDMAN SACHS GROUP INC | Reduced | 12.8K | 10.6K | -2.2K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 17.8K | 19.4K | +1.6K |
| NORTHERN TRUST CORP | Increased | 46.9K | 48.2K | +1.2K |
| Mirae Asset Global Investments Co., Ltd. | New | 0 | 1.2K | +1.2K |
| US BANCORP \DE\ | Sold Out | 1.0K | 0 | -1.0K |
| BARCLAYS PLC | Reduced | 16.5K | 15.9K | -651 |
| Bank of New York Mellon Corp | Increased | 16.8K | 17.4K | +590 |
| Creative Planning | Increased | 22.3K | 22.8K | +523 |
| FMR LLC | Increased | 472 | 953 | +481 |
| Tower Research Capital LLC (TRC) | Reduced | 1.1K | 619 | -475 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Reduced | 3.4K | 2.9K | -441 |
| RHUMBLINE ADVISERS | Increased | 5.1K | 5.5K | +402 |
| Spire Wealth Management | Reduced | 6.6K | 6.3K | -305 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Reduced | 381 | 87 | -294 |
| ROYAL BANK OF CANADA | Increased | 550 | 779 | +229 |
| DEUTSCHE BANK AG\ | Increased | 5.0K | 5.2K | +175 |
| PNC FINANCIAL SERVICES GROUP, INC. | Increased | 26 | 170 | +144 |
| Arax Advisory Partners | Increased | 3 | 138 | +135 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.