MainStreet Bancshares
MNSB
75 hedge funds and large institutions have $96.7M invested in MainStreet Bancshares in 2025 Q4 according to their latest regulatory filings, with 11 funds opening new positions, 25 increasing their positions, 25 reducing their positions, and 7 closing their positions.
57% more first-time investments, than exits
New positions opened: 11 | Existing positions closed: 7
6% more funds holding
Funds holding: 71 → 75 (+4)
2.08% more ownership
Funds ownership: 59.56% → 61.63% (+2.1%)
1% more capital invested
Capital invested by funds: $95.5M → $96.7M (+$1.16M)
0% more repeat investments, than reductions
Existing positions increased: 25 | Existing positions reduced: 25
100% less funds holding in top 10
Funds holding in top 10: 1 → 0 (-1)
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
FL
Fourthstone LLC
St Louis,
Missouri
|
+$5.04M |
| 2 |
Citadel Advisors
Miami,
Florida
|
+$768K |
| 3 |
Squarepoint
New York
|
+$673K |
| 4 |
Marshall Wace
London,
United Kingdom
|
+$622K |
| 5 |
Dimensional Fund Advisors
Austin,
Texas
|
+$376K |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
BFC
Banc Funds Company
Chicago,
Illinois
|
-$2.96M |
| 2 |
Wellington Management Group
Boston,
Massachusetts
|
-$1.01M |
| 3 |
Millennium Management
New York
|
-$668K |
| 4 |
First Manhattan
New York
|
-$418K |
| 5 |
UBS Group
Zurich,
Switzerland
|
-$413K |
| Name | Holding | Trade Value |
Shares Change |
Change in Stake |
|
|---|---|---|---|---|---|
|
76
Millennium Management
New York
| – | -$668K | -32,052 | Closed |
|
77
Two Sigma Advisers
New York
| – | -$365K | -17,500 | Closed |
|
|
GCP
78
GSA Capital Partners
London,
United Kingdom
| – | -$248K | -11,888 | Closed |
|
79
Two Sigma Investments
New York
| – | -$210K | -10,072 | Closed |
|
|
AAP
80
Arax Advisory Partners
Denver,
Colorado
| – | -$895 | -43 | Closed |
|
|
GI
81
GAMMA Investing
Foster City,
California
| – | -$583 | -28 | Closed |
|
|
EWA
82
EverSource Wealth Advisors
Birmingham,
Alabama
| – | -$62 | -3 | Closed |
|
MNSB Hedge Fund Activity: Q4 2025 in Review
75 of the 8,224 institutional investors tracked by Wall St. Rank reported a position in MainStreet Bancshares (MNSB) for Q4 2025, worth a combined $96.7M — up 1.2% from $95.5M a quarter earlier.
Buyers outnumbered sellers: 11 funds opened new MNSB positions and 7 closed out — a net gain of 4 holders — while 25 added to existing stakes and 25 trimmed.
The largest buyer was Fourthstone LLC, adding an estimated $5.04M. The largest seller was Banc Funds Company, cutting an estimated $2.96M.
- 75 institutional investors held MainStreet Bancshares (MNSB) as of Q4 2025, up from 71 in Q3 2025.
- Funds reported $96.7M of MainStreet Bancshares stock for Q4 2025, up 1.2% quarter-over-quarter.
- 11 funds opened new MainStreet Bancshares positions in Q4 2025 and 7 closed out, a net change of +4 holders.
- The largest MainStreet Bancshares buyer in Q4 2025 was Fourthstone LLC, an estimated $5.04M added.
- The largest MainStreet Bancshares seller in Q4 2025 was Banc Funds Company, an estimated $2.96M sold.
Based on aggregated 13F filings for Q4 2025.