MainStreet Bancshares, Inc. Common Stock is a security (CUSIP 56064Y100) tracked across SEC portfolio filings. 87 institutional managers reported $90.5M on Form 13F as of 2026-06-30; 8 registered fund positions totaling $2.9M via N-PORT as of 2026-05-31.
Showing 15 of 87 managers by value.
| Manager | Location | Value | Shares |
|---|---|---|---|
| BANC FUNDS CO LLC | CHICAGO, IL | $11.8M | 530,941 |
| ALLIANCEBERNSTEIN L.P. | NASHVILLE, TN | $11.3M | 554,723 |
| Fourthstone LLC | ST LOUIS, MO | $8.5M | 384,802 |
| WELLINGTON MANAGEMENT GROUP LLP | BOSTON, MA | $7.8M | 352,706 |
| VANGUARD GROUP INC | Valley Forge, PA | $7.7M | 379,278 |
| BlackRock, Inc. | New York, NY | $7.7M | 347,608 |
| FIRST MANHATTAN CO. LLC. | New York, NY | $4.2M | 188,108 |
| DIMENSIONAL FUND ADVISORS LP | AUSTIN, TX | $3.7M | 166,633 |
| GEODE CAPITAL MANAGEMENT, LLC | BOSTON, MA | $3.3M | 147,168 |
| UBS Group AG | Zurich, V8 | $2.5M | 113,178 |
| MARSHALL WACE, LLP | LONDON, X0 | $2.4M | 106,225 |
| STATE STREET CORP | BOSTON, MA | $2.2M | 100,211 |
| Cresset Asset Management, LLC | Chicago, IL | $1.6M | 72,000 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | HOUSTON, TX | $1.4M | 63,776 |
| AMERICAN CENTURY COMPANIES INC | KANSAS CITY, MO | $1.2M | 52,544 |
| Fund | Registrant | Value | % of fund |
|---|---|---|---|
| VANGUARD EXTENDED MARKET INDEX FUND | VANGUARD INDEX FUNDS | $1.4M | 0.17% |
| VANGUARD RUSSELL 2000 INDEX FUND | VANGUARD SCOTTSDALE FUNDS | $800K | 0.46% |
| Master Small Cap Index Series | Quantitative Master Series LLC | $271K | 0.56% |
| U.S. MICRO CAP PORTFOLIO | DFA INVESTMENT DIMENSIONS GROUP INC | $205K | 0.27% |
| VANGUARD INSTITUTIONAL TOTAL STOCK MARKET INDEX FUND | VANGUARD INSTITUTIONAL INDEX FUNDS | $102K | 0.03% |
| VANGUARD BALANCED INDEX FUND | VANGUARD VALLEY FORGE FUNDS | $82K | 0.01% |
| DWS Small Cap Index VIP | DEUTSCHE DWS INVESTMENTS VIT FUNDS | $21K | 0.49% |
| Longview Advantage ETF | RBB Fund Trust | $10K | 0.16% |