Mainstreet BancsharesMNSB
13F holders, Q4 2025 (December 31)75holders +4
10new positions
7sold out
2famous investors
$20.36avg. 13F price*
At the end of Q4 2025, 75 institutions reported holding Mainstreet Bancshares Inc. (MNSB) in their 13F filings, up 4 from Q3 2025. 10 opened new positions and 7 sold out. The largest holders were Fourthstone LLC ($15.6M), Alliancebernstein L.P. ($13.9M) and Banc Funds Co. LLC ($8.6M). 2 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Ken Griffin (0.0% of Citadel Advisors's portfolio).
- Company
- Mainstreet Bancshares Inc.
- CUSIP
- 56064Y100
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 10 | $2.0M |
| Exits | 7 | $1.5M |
All 13F filers, Q3 2025 → Q4 2025: 500,875 shares bought and 358,937 shares sold, net +141,938 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 75 holders
| Fourthstone LLC | 2.93% | Add +50.6% | 767,792 | $15.6M |
| Alliancebernstein L.P. | 0.00% | Add +1.6% | 684,945 | $13.9M |
| Banc Funds Co. LLC | 1.70% | Reduce -26.4% | 421,981 | $8.6M |
| Vanguard Group Inc. | 0.00% | Reduce -0.3% | 379,278 | $7.7M |
| Wellington Management Group LLP | 0.00% | Reduce -12.6% | 359,411 | $7.3M |
| BlackRock, Inc. | 0.00% | Add +5.1% | 350,338 | $7.1M |
| Cresset Asset Management, LLC | 0.03% | Reduce -0.8% | 333,136 | $6.8M |
| First Manhattan Co. Llc. | 0.01% | Reduce -10.2% | 188,108 | $3.8M |
| Geode Capital Management, LLC | 0.00% | Reduce -1.8% | 149,969 | $3.1M |
| Dimensional Fund Advisors LP | 0.00% | Add +16.1% | 138,351 | $2.8M |
| UBS Group AG | 0.00% | Reduce -15.7% | 113,676 | $2.3M |
| Acadian Asset Management LLC | 0.00% | Add +12.9% | 97,034 | $2.0M |
| State Street Corp. | 0.00% | Add +0.8% | 73,562 | $1.5M |
| Bridgeway Capital Management, LLC | 0.03% | Add +17.8% | 60,742 | $1.2M |
| Renaissance Technologies | 0.00% | Reduce -0.8% | 49,000 | $998K |
| Northern Trust Corp. | 0.00% | Reduce -9.5% | 48,488 | $987K |
| Mendon Capital Advisors Corp. | 0.38% | Add +22.8% | 47,312 | $963K |
| Marshall Wace, LLP | 0.00% | Add +255.6% | 44,287 | $902K |
| Citadel Advisors | 0.00% | New | 39,288 | $800K |
| Squarepoint Ops LLC | 0.00% | New | 34,424 | $701K |
| Empowered Funds, LLC | 0.01% | Add +9.6% | 31,362 | $639K |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | Add +50.6% | 26,971 | $549K |
| Morgan Stanley | 0.00% | Add +4.2% | 26,465 | $539K |
| Barclays PLC | 0.00% | Add +16.6% | 26,048 | $530K |
| ELCO Management Co., LLC | 0.29% | Add +94.7% | 22,312 | $454K |
| Creative Planning | 0.00% | Reduce -0.3% | 22,100 | $450K |
| Charles Schwab Investment Management Inc. | 0.00% | No change | 20,565 | $419K |
| Bank of New York Mellon Corp | 0.00% | Reduce -25.9% | 18,039 | $367K |
| Daytona Street Capital LLC | 0.28% | — | 18,000 | $366K |
| Atlantic Union Bankshares Corp | 0.00% | No change | 12,600 | $257K |
| HighTower Advisors, LLC | 0.00% | Add +0.0% | 12,302 | $250K |
| Trexquant Investment LP | 0.00% | New | 11,751 | $239K |
| Arrowstreet Capital, Limited Partnership | 0.00% | New | 11,464 | $233K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -57.3% | 11,364 | $231K |
| Provident Wealth Management, LLC | 0.07% | No change | 10,932 | $223K |
| Caldwell Sutter Capital, Inc. | 0.08% | No change | 8,818 | $180K |
| Bank of America Corp. | 0.00% | Add +67.6% | 8,110 | $165K |
| Wells Fargo & Company | 0.00% | Add +47.6% | 7,877 | $160K |
| Osaic Holdings, Inc. | 0.00% | No change | 6,709 | $137K |
| Spire Wealth Management | 0.00% | No change | 6,562 | $134K |
| Hughes Financial Services, LLC | 0.02% | No change | 5,440 | $111K |
| Rhumbline Advisers | 0.00% | Reduce -27.0% | 5,256 | $107K |
| Deutsche Bank AG | 0.00% | No change | 5,026 | $102K |
| JPMorgan Chase & Co. | 0.00% | Reduce -29.1% | 4,781 | $97K |
| MetLife Investment Management, LLC | 0.00% | Reduce -7.7% | 4,079 | $83K |
| New York State Common Retirement Fund | 0.00% | No change | 3,484 | $71K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -1.5% | 3,289 | $67K |
| Kestra Advisory Services, LLC | 0.00% | New | 1,990 | $41K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 1,763 | $36K |
| BNP Paribas Financial Markets | 0.00% | Reduce -2.9% | 1,710 | $35K |
| Royal Bank of Canada | 0.00% | Add +1.3% | 1,209 | $24K |
| Steward Partners Investment Advisory, LLC | 0.00% | New | 1,050 | $21K |
| US Bancorp \de | 0.00% | No change | 1,000 | $20K |
| First United Bank & Trust | 0.01% | No change | 790 | $16K |
| Federated Hermes, Inc. | 0.00% | Add +7.6% | 747 | $15K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 718 | $15K |
| Russell Investments Group, Ltd. | 0.00% | Reduce -81.8% | 667 | $14K |
| Legal & General Group Plc | 0.00% | No change | 636 | $13K |
| State of Alaska, Department of Revenue | 0.00% | New | 596 | $12K |
| Rockefeller Capital Management L.P. | 0.00% | Add +0.6% | 553 | $11K |
| Tower Research Capital LLC (TRC) | 0.00% | Reduce -48.1% | 552 | $11K |
| Toth Financial Advisory Corp. | 0.00% | Add +0.6% | 540 | $11K |
| FMR LLC | 0.00% | Add +324.1% | 458 | $9K |
| California State Teachers Retirement System | 0.00% | Reduce -1.8% | 432 | $9K |
| Sterling Capital Management LLC | 0.00% | Reduce -16.3% | 386 | $8K |
| Amalgamated Bank | 0.00% | Reduce -7.9% | 221 | $4K |
| Citigroup Inc. | 0.00% | Add +72.0% | 160 | $3K |
| Cwm, LLC | 0.00% | Reduce -48.3% | 109 | $2K |
| Farther Finance Advisors, LLC | 0.00% | New | 94 | $2K |
| SBI Securities Co., Ltd. | 0.00% | Add +1.2% | 83 | $2K |
| PNC Financial Services Group, Inc. | 0.00% | Reduce -91.3% | 16 | $326 |
| MAI Capital Management | 0.00% | New | 5 | $102 |
| Essential Partners LLC | 0.00% | Reduce -93.3% | 4 | $81 |
| IFP Advisors, Inc | 0.00% | Add +50.0% | 3 | $61 |
| Rothschild Investment LLC | 0.00% | New | 1 | $20 |
"% of holder's portfolio" is MNSB's weight in each manager's 13F, not the share of Mainstreet Bancshares Inc. the manager owns.