MAINSTREET BANCSHARES INC (MNSB) Top 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 March 31, 2026. The institutional investors covered on this page collectively reported approximately $89.55M 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 $11.79M in its March 31, 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 $12.52M, representing an estimated gain of +6.26% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 75% of the total disclosed MNSB value among the investors covered in this analysis. Major shareholders include Banc Funds Co Llc, Alliancebernstein L.P., Fourthstone Llc, 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
80
Total Reported Value
$89.55M
Largest Holder
Banc Funds Co Llc
Largest Position
$11.79M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
86
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 | 2.19% | 530,941 | $11,786,890 | $12,524,898 | +$738,008 | +6.26% | |
| Alliancebernstein L.P. | 0.00% | 554,723 | $11,294,160 | $13,085,916 | +$1,791,756 | +15.86% | |
| Fourthstone Llc | 1.45% | 384,802 | $8,542,604 | $9,077,479 | +$534,875 | +6.26% | |
| Wellington Management Group Llp | 0.00% | 352,706 | $7,830,073 | $8,320,335 | +$490,262 | +6.26% | |
| Blackrock, Inc. | 0.00% | 347,608 | $7,716,897 | $8,200,073 | +$483,176 | +6.26% | |
| Vanguard Capital Management Llc | 0.00% | 301,487 | $6,693,011 | $7,112,078 | +$419,067 | +6.26% | |
| First Manhattan Co. Llc. | 0.01% | 188,108 | $4,175,998 | $4,437,468 | +$261,470 | +6.26% | |
| Dimensional Fund Advisors Lp | 0.00% | 166,633 | $3,699,046 | $3,930,872 | +$231,826 | +6.27% | |
| Geode Capital Management, Llc | 0.00% | 147,168 | $3,267,520 | $3,471,693 | +$204,173 | +6.25% | |
| Ubs Group Ag | 0.00% | 113,178 | $2,512,551 | $2,669,869 | +$157,318 | +6.26% | |
| Marshall Wace, Llp | 0.00% | 106,225 | $2,358,194 | $2,505,848 | +$147,654 | +6.26% | |
| State Street Corp | 0.00% | 100,211 | $2,224,684 | $2,363,977 | +$139,293 | +6.26% | |
| Cresset Asset Management, Llc | 0.01% | 72,000 | $1,598,406 | $1,698,480 | +$100,074 | +6.26% | |
| Bridgeway Capital Management, Llc | 0.03% | 63,776 | $1,415,827 | $1,504,476 | +$88,649 | +6.26% | |
| American Century Companies Inc | 0.00% | 52,544 | $1,166,477 | $1,239,513 | +$73,036 | +6.26% | |
| Squarepoint Ops Llc | 0.00% | 50,874 | $1,129,403 | $1,200,118 | +$70,715 | +6.26% | |
| Mendon Capital Advisors Corp | 0.41% | 47,312 | $1,050,326 | $1,116,090 | +$65,764 | +6.26% | |
| Northern Trust Corp | 0.00% | 46,935 | $1,041,957 | $1,107,197 | +$65,240 | +6.26% | |
| Vanguard Portfolio Management Llc | 0.00% | 39,661 | $880,474 | $935,603 | +$55,129 | +6.26% | |
| Vanguard Fiduciary Trust Co | 0.00% | 38,951 | $864,712 | $918,854 | +$54,142 | +6.26% | |
| Empowered Funds, Llc | 0.00% | 34,396 | $763,591 | $811,402 | +$47,811 | +6.26% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 33,056 | $733,843 | $779,791 | +$45,948 | +6.26% | |
| Morgan Stanley | 0.00% | 24,380 | $541,236 | $575,124 | +$33,888 | +6.26% | |
| Citadel Advisors Llc | 0.00% | 23,518 | $522,100 | $554,790 | +$32,690 | +6.26% | |
| Creative Planning | 0.00% | 22,270 | $494,394 | $525,349 | +$30,955 | +6.26% | |
| Daytona Street Capital Llc | 0.31% | 18,000 | $405,018 | $424,620 | +$19,602 | +4.84% | |
| Charles Schwab Investment Management Inc | 0.00% | 17,801 | $395,182 | $419,926 | +$24,744 | +6.26% | |
| Trexquant Investment Lp | 0.00% | 17,039 | $378,266 | $401,950 | +$23,684 | +6.26% | |
| Bank Of New York Mellon Corp | 0.00% | 16,826 | $373,539 | $396,925 | +$23,386 | +6.26% | |
| Barclays Plc | 0.00% | 16,513 | $366,588 | $389,542 | +$22,954 | +6.26% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 14,400 | $319,680 | $339,696 | +$20,016 | +6.26% |
| Hightower Advisors, Llc | 0.00% | 13,428 | $298,102 | $316,767 | +$18,665 | +6.26% | |
| Goldman Sachs Group Inc | 0.00% | 12,827 | $284,759 | $302,589 | +$17,830 | +6.26% | |
| Atlantic Union Bankshares Corp | 0.01% | 12,600 | $279,720 | $297,234 | +$17,514 | +6.26% | |
| Xtx Topco Ltd | 0.00% | 10,110 | $224,442 | $238,495 | +$14,053 | +6.26% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 9,732 | $216,050 | $229,578 | +$13,528 | +6.26% | |
| Nuveen, Llc | 0.00% | 9,161 | $203,374 | $216,108 | +$12,734 | +6.26% | |
| Caldwell Sutter Capital, Inc. | 0.08% | 8,818 | $195,760 | $208,017 | +$12,257 | +6.26% | |
| Osaic Holdings, Inc. | 0.00% | 6,709 | $148,940 | $158,265 | +$9,325 | +6.26% | |
| Spire Wealth Management | 0.00% | 6,562 | $145,676 | $154,798 | +$9,122 | +6.26% | |
| Hughes Financial Services, Llc | 0.02% | 5,440 | $120,768 | $128,330 | +$7,562 | +6.26% | |
| Rhumbline Advisers | 0.00% | 5,116 | $113,571 | $120,686 | +$7,115 | +6.27% | |
| Deutsche Bank Ag\ | 0.00% | 5,026 | $111,577 | $118,563 | +$6,986 | +6.26% | |
| New York State Common Retirement Fund | 0.00% | 3,484 | $77,345 | $82,188 | +$4,843 | +6.26% | |
| Mirae Asset Global Etfs Holdings Ltd. | 0.00% | 3,357 | $74,525 | $79,192 | +$4,667 | +6.26% | |
| Bnp Paribas Financial Markets | 0.00% | 2,787 | $61,871 | $65,745 | +$3,874 | +6.26% | |
| Cassaday & Co Wealth Management Llc | 0.00% | 2,730 | $60,606 | $64,401 | +$3,795 | +6.26% | |
| Wells Fargo & Company/Mn | 0.00% | 2,582 | $57,321 | $60,909 | +$3,588 | +6.26% | |
| Vanguard Global Advisers, Llc | 0.00% | 2,563 | $56,899 | $60,461 | +$3,562 | +6.26% | |
| Police & Firemen'S Retirement System Of New Jersey | 0.00% | 1,763 | $39,139 | $41,589 | +$2,450 | +6.26% |
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.