MAINSTREET BANCSHARES INC (MNSB) Institutional Shareholders
MAINSTREET BANCSHARES INC (MNSB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026. The institutional investors covered on this page collectively reported approximately $98.12M in MNSB holdings during the latest filing period.
Banc Funds Co Llc is currently the largest disclosed institutional shareholder of MNSB tracked by InsiderSet, reporting ownership valued at approximately $13.47M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $13.46M, representing an estimated loss of -0.08% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 69% of the total disclosed MNSB value among the investors covered in this analysis. Major shareholders include Banc Funds Co Llc, Blackrock, Inc., Alliancebernstein L.P., and several other long-term asset managers with concentrated positions in MAINSTREET BANCSHARES INC (MNSB).
This page ranks the largest institutional MNSB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
90
Total Reported Value
$98.12M
Largest Holder
Banc Funds Co Llc
Largest Position
$13.47M
Insider Transactions (90d)
4
Latest Filing Quarter
Q2 2026
New Institutional Positions
102
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Banc Funds Co Llc | 2.23% | 545,679 | $13,472,815 | $13,461,901 | -$10,914 | -0.08% | |
| Blackrock, Inc. | 0.00% | 404,037 | $9,975,675 | $9,967,593 | -$8,082 | -0.08% | |
| Alliancebernstein L.P. | 0.00% | 418,393 | $9,288,325 | $10,321,755 | +$1,033,430 | +11.13% | |
| Wellington Management Group Llp | 0.00% | 336,961 | $8,319,567 | $8,312,828 | -$6,739 | -0.08% | |
| Vanguard Capital Management Llc | 0.00% | 262,466 | $6,480,286 | $6,475,036 | -$5,250 | -0.08% | |
| Dimensional Fund Advisors Lp | 0.00% | 205,014 | $5,061,763 | $5,057,695 | -$4,068 | -0.08% | |
| Acadian Asset Management Llc | 0.01% | 183,245 | $4,518,000 | $4,520,654 | +$2,654 | +0.06% | |
| First Manhattan Co. Llc. | 0.01% | 161,731 | $3,993,138 | $3,989,904 | -$3,234 | -0.08% | |
| Geode Capital Management, Llc | 0.00% | 152,196 | $3,758,183 | $3,754,675 | -$3,508 | -0.09% | |
| Marshall Wace, Llp | 0.00% | 120,194 | $2,967,589 | $2,965,186 | -$2,403 | -0.08% | |
| State Street Corp | 0.00% | 109,465 | $2,702,691 | $2,700,502 | -$2,189 | -0.08% | |
| American Century Companies Inc | 0.00% | 101,604 | $2,508,603 | $2,506,571 | -$2,032 | -0.08% | |
| Bridgeway Capital Management, Llc | 0.03% | 66,551 | $1,643,144 | $1,641,813 | -$1,331 | -0.08% | |
| Cresset Asset Management, Llc | 0.01% | 59,040 | $1,457,697 | $1,456,517 | -$1,180 | -0.08% | |
| Citadel Advisors Llc | 0.00% | 58,344 | $1,440,513 | $1,439,346 | -$1,167 | -0.08% | |
| Northern Trust Corp | 0.00% | 48,150 | $1,188,824 | $1,187,861 | -$964 | -0.08% | |
| Fourthstone Llc | 0.84% | 47,432 | $1,185,994 | $1,170,147 | -$15,847 | -1.34% | |
| Vanguard Portfolio Management Llc | 0.00% | 42,813 | $1,057,053 | $1,056,197 | -$856 | -0.08% | |
| Trexquant Investment Lp | 0.01% | 39,525 | $975,872 | $975,082 | -$790 | -0.08% | |
| Vanguard Fiduciary Trust Co | 0.00% | 39,018 | $963,354 | $962,574 | -$780 | -0.08% | |
| Squarepoint Ops Llc | 0.00% | 37,233 | $919,283 | $918,538 | -$745 | -0.08% | |
| Empowered Funds, Llc | 0.00% | 37,171 | $917,752 | $917,009 | -$743 | -0.08% | |
| Ubs Group Ag | 0.00% | 33,102 | $817,288 | $816,626 | -$662 | -0.08% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 30,385 | $750,206 | $749,598 | -$608 | -0.08% | |
| Aqr Capital Management Llc | 0.00% | 29,408 | $726,083 | $725,495 | -$588 | -0.08% | |
| Strs Ohio | 0.00% | 26,100 | $644,409 | $643,887 | -$522 | -0.08% | |
| Morgan Stanley | 0.00% | 24,316 | $600,377 | $599,876 | -$501 | -0.08% | |
| Hrt Financial Lp | 0.00% | 24,284 | $599,000 | $599,086 | +$86 | +0.01% | |
| Mendon Capital Advisors Corp | 0.20% | 23,370 | $577,005 | $576,538 | -$467 | -0.08% | |
| Gsa Capital Partners Llp | 0.04% | 23,242 | $574,000 | $573,380 | -$620 | -0.11% | |
| R Squared Ltd | 0.27% | 20,799 | $513,528 | $513,111 | -$417 | -0.08% | |
| Charles Schwab Investment Management Inc | 0.00% | 19,444 | $480,072 | $479,683 | -$389 | -0.08% | |
| Nuveen, Llc | 0.00% | 17,867 | $441,136 | $440,779 | -$357 | -0.08% | |
| Daytona Street Capital Llc | 0.32% | 18,000 | $432,990 | $444,060 | +$11,070 | +2.56% | |
| Bank Of New York Mellon Corp | 0.00% | 17,416 | $430,008 | $429,653 | -$355 | -0.08% | |
| Two Sigma Investments, Lp | 0.00% | 16,699 | $412,298 | $411,964 | -$334 | -0.08% | |
| Barclays Plc | 0.00% | 15,862 | $391,634 | $391,316 | -$318 | -0.08% | |
| Los Angeles Capital Management Llc | 0.00% | 14,401 | $355,561 | $355,273 | -$288 | -0.08% | |
| Xtx Topco Ltd | 0.00% | 13,868 | $342,401 | $342,124 | -$277 | -0.08% | |
| Atlantic Union Bankshares Corp | 0.01% | 12,600 | $311,094 | $310,842 | -$252 | -0.08% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 11,000 | $271,590 | $271,370 | -$220 | -0.08% |
| Goldman Sachs Group Inc | 0.00% | 10,628 | $262,405 | $262,193 | -$212 | -0.08% | |
| Point72 Asset Management, L.P. | 0.00% | 10,488 | $258,949 | $258,739 | -$210 | -0.08% | |
| Sei Investments Co | 0.00% | 9,915 | $244,803 | $244,603 | -$200 | -0.08% | |
| Russell Investments Group, Ltd. | 0.00% | 9,843 | $242,784 | $242,827 | +$43 | +0.02% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 9,732 | $240,283 | $240,088 | -$195 | -0.08% | |
| Quadrature Capital Ltd | 0.00% | 9,707 | $239,666 | $239,472 | -$194 | -0.08% | |
| Occudo Quantitative Strategies Lp | 0.01% | 8,970 | $221,469 | $221,290 | -$179 | -0.08% | |
| Caldwell Sutter Capital, Inc. | 0.08% | 8,818 | $217,716 | $217,540 | -$176 | -0.08% | |
| Bnp Paribas Financial Markets | 0.00% | 7,432 | $183,496 | $183,347 | -$149 | -0.08% |
Frequently asked questions about MNSB
Who owns the most MNSB stock?
The largest holders of MNSB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for MAINSTREET BANCSHARES INC (MNSB).
Is MNSB widely held by superinvestors?
Many widely followed stocks like MNSB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly MNSB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.