MNSB · MainStreet Bancshares, Inc. · Holdings
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Institutional Ownership Trend
Holder Concentration
Across 96 13F filersWho Holds MNSB
Last 8 quarters through Sep 30, 2026 (filing window open)Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.
Jun 30, 2026, the newest closed quarter: 96 filers, like-for-like change -4.1%; actively managed books -6.8%; index-like books +3.8%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 41.9% | 48 | -17.7% |
| Exempt adviser | 3.0% | 1 | +13.2% |
| Adviser | 4.0% | 2 | -14.0% |
| Bank | 6.1% | 11 | -20.7% |
| Benefit plan | 0.6% | 2 | +2872.4% |
| Non-US | 0.3% | 3 | +61.0% |
| Holding company | 19.3% | 6 | +5.2% |
| Unknown | 24.8% | 23 | +24.8% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 27.0% | 17 | +3.8% |
| Systematic-like | 8.6% | 11 | +67.6% |
| Concentrated | 5.4% | 10 | -62.5% |
| Diversified active | 59.0% | 58 | +0.3% |
| Not measured | 0.0% | 0 | — |
| Unknown | 0.0% | 0 | — |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 58.0% | 54 | -0.2% |
| Medium turnover | 23.6% | 22 | -24.4% |
| High turnover | 9.4% | 13 | +83.8% |
| Unknown | 9.0% | 7 | -8.9% |
| Not measured | 0.0% | 0 | — |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 10.9% | 12 | +7.5% |
| Medium horizon | 13.1% | 13 | +14.2% |
| Long horizon | 70.6% | 66 | 0.0% |
| Unknown | 5.4% | 5 | -55.4% |
| Not measured | 0.0% | 0 | — |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 16.8% | 16 | -33.2% |
| $1B to $10B | 3.3% | 15 | +38.8% |
| $10B to $100B | 19.6% | 27 | +16.7% |
| $100B or more | 60.3% | 38 | +0.5% |
| Not measured | 0.0% | 0 | — |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Individuals and high net worth | 3.2% | 20 | -15.8% |
| Pooled investment vehicles | 5.6% | 10 | -53.5% |
| Registered funds and BDCs | 19.9% | 8 | -1.1% |
| Insurance companies | 0.0% | 1 | 0.0% |
| Governments and sovereign funds | 1.1% | 2 | +103.3% |
| Other investment advisers | 0.0% | 1 | +327.6% |
| Diversified | 12.1% | 6 | -16.2% |
| Unknown | 58.1% | 48 | +8.8% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 11.9% | 16 | -32.1% |
| Private equity funds | 0.6% | 1 | +2.3% |
| Venture capital funds | 0.0% | 1 | +380.0% |
| Real estate funds | 1.5% | 3 | -17.8% |
| Securitized asset funds | 0.0% | 1 | 0.0% |
| Other private funds | 7.4% | 6 | +20.3% |
| Mixed private funds | 10.3% | 1 | -24.6% |
| No private funds | 13.3% | 20 | -4.7% |
| Unknown | 55.1% | 47 | +8.6% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 93.2% | 81 | -4.2% |
| Outside the US | 6.8% | 15 | -3.7% |
The Sep 30, 2026 filing window is still open, so its bar carries the Jun 30, 2026 positions of filers that have not filed yet.
How the mix is measured
Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.
Excluded 1 holder with no observed 2026-06-30 13F.
Conviction and Crowding
96 13F filers, quarter ended Jun 30, 2026Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.
Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).
Estimated Holder Cost Basis
Quarter ended Jun 30, 2026, on that quarter's share basisEstimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.
Estimated cost covers 26.9% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.
Shared Holders
Companies MNSB's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | FCBM First Carolina Financial Services, Inc. | 4 |
| 2 | AMTB Amerant Bancorp Inc. | 3 |
| 3 | ISTR Investar Holding Corp | 3 |
| 4 | AVBH Avidbank Holdings, Inc. | 3 |
| 5 | CBAN Colony Bankcorp Inc | 3 |
| 6 | MRBK Meridian Corp | 3 |
| 7 | COSO CoastalSouth Bancshares, Inc. | 3 |
| 8 | USCB Uscb Financial Holdings, Inc. | 3 |
| 9 | BWB Bridgewater Bancshares Inc | 3 |
| 10 | FSUN Firstsun Capital Bancorp | 3 |
Shareholder Targets
13F filers that own its peers but not MNSB, quarter ended Jun 30, 2026Found through its holder-overlap peers: FCBM, AMTB, ISTR, AVBH, CBAN, MRBK, COSO, USCB, BWB, FSUN, BFST. 300 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | Patriot Financial Partners GP II, L.P. Unknown, Concentrated | $141,457,497 4 held | AMTB, USCB, AVBH |
| 2 | Fortress Investment Group LLC Adviser, Concentrated | $85,178,292 1 held | FSUN |
| 3 | CANYON CAPITAL ADVISORS LLC Registered adviser, Concentrated | $74,886,196 1 held | FSUN |
| 4 | Curi Capital, LLC Registered adviser, Diversified active | $64,069,667 8 held | FSUN, USCB, BFST |
| 5 | STRATEGIC VALUE BANK PARTNERS LLC Registered adviser, Concentrated | $57,687,482 2 held | FSUN, MRBK |
| 6 | North Reef Capital Management LP Registered adviser, Concentrated | $57,313,404 2 held | AMTB, COSO |
| 7 | ENDEAVOUR CAPITAL ADVISORS INC Registered adviser, Concentrated | $49,642,959 3 held | AVBH, USCB, FCBM |
| 8 | Thrivent Financial for Lutherans Registered adviser, Diversified active | $46,668,765 2 held | BWB, ISTR |
| 9 | T. Rowe Price Investment Management, Inc. Adviser, Diversified active | $43,295,730 2 held | USCB, BFST |
| 10 | MALTESE CAPITAL MANAGEMENT LLC Registered adviser, Diversified active | $40,143,603 6 held | FSUN, AMTB, ISTR |
Fund Ownership of MNSB by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 10.72% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 2.79% | 198,723 |
| Index ETFs | 7.93% | 564,868 |
| Active ETFs | 1.35% | 95,881 |
| Active funds | 2.40% | 171,183 |
| Unclassified | 1.14% | 80,953 |
| All registered funds | 15.61% | 1,111,608 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Small BANC FUNDS CO LLC | $13,472,814 | 13.40% | 545,679 | Shares | 2026-08-13 | |
| Mega ALLIANCEBERNSTEIN L.P. Registered adviser | $10,330,123 | 10.28% | 418,393 | Shares | 2026-08-14 | |
| Mega BlackRock, Inc. Holding company | $9,975,670 | 9.92% | 404,037 | Shares | 2026-08-07 | |
| Mega WELLINGTON MANAGEMENT GROUP LLP Holding company | $8,319,567 | 8.28% | 336,961 | Shares | 2026-08-14 | |
| Mega VANGUARD CAPITAL MANAGEMENT LLC Registered adviser | $6,480,285 | 6.45% | 262,466 | Shares | 2026-08-13 | |
| Mega DIMENSIONAL FUND ADVISORS LP Registered adviser | $5,061,793 | 5.04% | 205,014 | Shares | 2026-08-11 | |
| Large ACADIAN ASSET MANAGEMENT LLC | $4,524,319 | 4.50% | 183,245 | Shares | 2026-08-13 | |
| Large FIRST MANHATTAN CO. LLC. Adviser | $3,993,138 | 3.97% | 161,731 | Shares | 2026-08-14 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC Registered adviser | $3,757,719 | 3.74% | 152,196 | Shares | 2026-08-12 | |
| Large MARSHALL WACE, LLP Exempt adviser | $2,967,589 | 2.95% | 120,194 | Shares | 2026-08-13 | |
| Mega STATE STREET CORP Bank | $2,702,690 | 2.69% | 109,465 | Shares | 2026-09-22 | |
| Mega AMERICAN CENTURY COMPANIES INC | $2,508,602 | 2.50% | 101,604 | Shares | 2026-08-12 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC Registered adviser | $1,643,144 | 1.63% | 66,551 | Shares | 2026-08-14 | |
| Large Cresset Asset Management, LLC Registered adviser | $1,457,697 | 1.45% | 59,040 | Shares | 2026-08-14 | |
| Mega CITADEL ADVISORS LLC Registered adviser | $1,440,513 | 1.43% | 58,344 | Shares | 2026-09-02 | |
| Mega NORTHERN TRUST CORP Bank | $1,188,822 | 1.18% | 48,150 | Shares | 2026-08-13 | |
| Small Fourthstone LLC Registered adviser | $1,171,096 | 1.17% | 47,432 | Shares | 2026-08-14 | |
| Mega VANGUARD PORTFOLIO MANAGEMENT LLC Registered adviser | $1,057,052 | 1.05% | 42,813 | Shares | 2026-08-13 | |
| Large Trexquant Investment LP Registered adviser | $975,872 | 0.97% | 39,525 | Shares | 2026-08-14 | |
| Mega VANGUARD FIDUCIARY TRUST CO | $963,354 | 0.96% | 39,018 | Shares | 2026-08-13 | |
| Large Squarepoint Ops LLC Registered adviser | $919,282 | 0.91% | 37,233 | Shares | 2026-08-14 | |
| Large Empowered Funds, LLC Registered adviser | $917,751 | 0.91% | 37,171 | Shares | 2026-08-17 | |
| Mega UBS Group AG Bank | $817,286 | 0.81% | 33,102 | Shares | 2026-08-13 | |
| Large Connor, Clark & Lunn Investment Management Ltd. Registered adviser | $750,205 | 0.75% | 30,385 | Shares | 2026-08-13 | |
| Mega AQR CAPITAL MANAGEMENT LLC Registered adviser | $726,081 | 0.72% | 29,408 | Shares | 2026-08-14 | |
| Large STRS OHIO Benefit plan | $644,409 | 0.64% | 26,100 | Shares | 2026-07-30 | |
| Mega MORGAN STANLEY Holding company | $600,358 | 0.60% | 24,316 | Shares | 2026-08-13 | |
| Large HRT FINANCIAL LP | $599,571 | 0.60% | 24,284 | Shares | 2026-08-14 | |
| Small MENDON CAPITAL ADVISORS CORP Registered adviser | $577,004 | 0.57% | 23,370 | Shares | 2026-08-11 | |
| Mid GSA CAPITAL PARTNERS LLP Registered adviser | $573,844 | 0.57% | 23,242 | Shares | 2026-08-06 | |
| Mega Creative Planning Registered adviser | $562,759 | 0.56% | 22,793 | Shares | 2026-08-13 | |
| Small R Squared Ltd | $513,527 | 0.51% | 20,799 | Shares | 2026-08-05 | |
| Mega CHARLES SCHWAB INVESTMENT MANAGEMENT INC Registered adviser | $480,072 | 0.48% | 19,444 | Shares | 2026-08-14 | |
| Small Daytona Street Capital LLC | $445,320 | 0.44% | 18,000 | Shares | 2026-10-15 | |
| Mega Nuveen, LLC | $441,136 | 0.44% | 17,867 | Shares | 2026-08-11 | |
| Mega Bank of New York Mellon Corp Bank | $429,999 | 0.43% | 17,416 | Shares | 2026-08-06 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $412,298 | 0.41% | 16,699 | Shares | 2026-08-14 | |
| Mega BARCLAYS PLC Bank | $391,632 | 0.39% | 15,862 | Shares | 2026-08-14 | |
| Large LOS ANGELES CAPITAL MANAGEMENT LLC Registered adviser | $355,560 | 0.35% | 14,401 | Shares | 2026-08-13 | |
| Mid XTX Topco Ltd | $342,400 | 0.34% | 13,868 | Shares | 2026-08-14 | |
| Large HighTower Advisors, LLC Registered adviser | $333,191 | 0.33% | 13,495 | Shares | 2026-08-05 | |
| Mid Atlantic Union Bankshares Corp Bank | $311,094 | 0.31% | 12,600 | Shares | 2026-08-11 | |
| Large RENAISSANCE TECHNOLOGIES LLC Registered adviser | $271,590 | 0.27% | 11,000 | Shares | 2026-08-13 | |
| Mega GOLDMAN SACHS GROUP INC Holding company | $262,405 | 0.26% | 10,628 | Shares | 2026-08-14 | |
| Large Point72 Asset Management, L.P. Registered adviser | $258,948 | 0.26% | 10,488 | Shares | 2026-08-14 | |
| Small ELCO Management Co., LLC Registered adviser | $252,867 | 0.25% | 10,221 | Shares | 2026-10-14 | |
| Mega SEI INVESTMENTS CO | $244,801 | 0.24% | 9,915 | Shares | 2026-08-14 | |
| Mega Russell Investments Group, Ltd. | $243,022 | 0.24% | 9,843 | Shares | 2026-08-06 | |
| Mega ARROWSTREET CAPITAL, LIMITED PARTNERSHIP Registered adviser | $240,283 | 0.24% | 9,732 | Shares | 2026-08-13 | |
| Large Quadrature Capital Ltd | $239,665 | 0.24% | 9,707 | Shares | 2026-08-07 | |
| Mid OCCUDO QUANTITATIVE STRATEGIES LP Registered adviser | $221,469 | 0.22% | 8,970 | Shares | 2026-08-13 | |
| Small CALDWELL SUTTER CAPITAL, INC. Registered adviser | $217,716 | 0.22% | 8,818 | Shares | 2026-08-05 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $183,496 | 0.18% | 7,432 | Shares | 2026-08-13 | |
| Small TOTH FINANCIAL ADVISORY CORP Registered adviser | $175,876 | 0.17% | 7,109 | Shares | 2026-10-08 | |
| Large OSAIC HOLDINGS, INC. Holding company | $165,644 | 0.16% | 6,709 | Shares | 2026-08-14 | |
| Mid Spire Wealth Management Registered adviser | $154,485 | 0.15% | 6,257 | Shares | 2026-07-15 | |
| Mega RHUMBLINE ADVISERS Registered adviser | $136,239 | 0.14% | 5,518 | Shares | 2026-08-12 | |
| Small Hughes Financial Services, LLC Registered adviser | $134,313 | 0.13% | 5,440 | Shares | 2026-07-20 | |
| Mega WELLS FARGO & COMPANY/MN Bank | $130,905 | 0.13% | 5,302 | Shares | 2026-08-14 | |
| Mega DEUTSCHE BANK AG\ Non-US | $128,412 | 0.13% | 5,201 | Shares | 2026-08-07 | |
| Large NEW YORK STATE COMMON RETIREMENT FUND | $86,019 | 0.09% | 3,484 | Shares | 2026-07-29 | |
| Mega CITIGROUP INC Bank | $72,118 | 0.07% | 2,921 | Shares | 2026-08-03 | |
| Large MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | $71,996 | 0.07% | 2,916 | Shares | 2026-08-14 | |
| Mega JPMORGAN CHASE & CO Bank | $71,896 | 0.07% | 2,912 | Shares | 2026-08-12 | |
| Mid Cassaday & Co Wealth Management LLC Registered adviser | $67,403 | 0.07% | 2,730 | Shares | 2026-08-10 | |
| Mega Vanguard Global Advisers, LLC Registered adviser | $63,280 | 0.06% | 2,563 | Shares | 2026-08-13 | |
| Large Police & Firemen's Retirement System of New Jersey | $43,528 | 0.04% | 1,763 | Shares | 2026-07-23 | |
| Large Mirae Asset Global Investments Co., Ltd. | $29,381 | 0.03% | 1,190 | Shares | 2026-07-22 | |
| Large Steward Partners Investment Advisory, LLC Registered adviser | $25,924 | 0.03% | 1,050 | Shares | 2026-08-13 | |
| Mega FMR LLC Holding company | $23,529 | 0.02% | 953 | Shares | 2026-08-13 | |
| Small FIRST UNITED BANK & TRUST | $19,505 | 0.02% | 790 | Shares | 2026-07-20 | |
| Mega ROYAL BANK OF CANADA Bank | $19,232 | 0.02% | 779 | Shares | 2026-08-14 | |
| Mid Ameritas Investment Partners, Inc. Registered adviser | $17,727 | 0.02% | 718 | Shares | 2026-08-13 | |
| Mega Legal & General Group Plc | $15,702 | 0.02% | 636 | Shares | 2026-08-14 | |
| Mid Tower Research Capital LLC (TRC) | $15,283 | 0.02% | 619 | Shares | 2026-08-11 | |
| Mid State of Alaska, Department of Revenue | $14,745 | 0.01% | 596 | Shares | 2026-10-15 | |
| Large Rockefeller Capital Management L.P. Registered adviser | $13,777 | 0.01% | 558 | Shares | 2026-08-13 | |
| Mid GAMMA Investing LLC Registered adviser | $12,394 | 0.01% | 501 | Shares | 2026-10-08 | |
| Large FEDERATED HERMES, INC. Adviser | $11,900 | 0.01% | 482 | Shares | 2026-08-12 | |
| Mega PNC FINANCIAL SERVICES GROUP, INC. Bank | $4,197 | 0.00% | 170 | Shares | 2026-08-07 | |
| Large Arax Advisory Partners Registered adviser | $3,407 | 0.00% | 138 | Shares | 2026-08-10 | |
| Mid Sterling Capital Management LLC Registered adviser | $2,987 | 0.00% | 121 | Shares | 2026-07-28 | |
| Large Allworth Financial LP | $2,987 | 0.00% | 121 | Shares | 2026-08-11 | |
| Mid IFP Advisors, Inc Registered adviser | $2,375 | 0.00% | 96 | Shares | 2026-10-16 | |
| Mega UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC Registered adviser | $2,172 | 0.00% | 88 | Shares | 2026-08-13 | |
| Mega CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM Benefit plan | $2,148 | 0.00% | 87 | Shares | 2026-08-24 | |
| Mid SBI Securities Co., Ltd. Non-US | $2,049 | 0.00% | 83 | Shares | 2026-07-23 | |
| Large Farther Finance Advisors, LLC Registered adviser | $1,261 | 0.00% | 51 | Shares | 2026-10-08 | |
| Small Essential Partners LLC Registered adviser | $593 | 0.00% | 24 | Shares | 2026-10-14 | |
| Mid Root Financial Partners, LLC Registered adviser | $593 | 0.00% | 24 | Shares | 2026-10-21 | |
| Mid ROTHSCHILD INVESTMENT LLC Registered adviser | $592 | 0.00% | 24 | Shares | 2026-08-06 | |
| Small True Wealth Design, LLC Registered adviser | $494 | 0.00% | 20 | Shares | 2026-10-13 | |
| Small Basecamp Wealth Advisors LLC Registered adviser | $444 | 0.00% | 18 | Shares | 2026-08-14 | |
| Mid EverSource Wealth Advisors, LLC Registered adviser | $418 | 0.00% | 17 | Shares | 2026-07-24 | |
| Small Covestor Ltd | $345 | 0.00% | 14 | Shares | 2026-08-07 | |
| Small GK Wealth Management LLC | $148 | 0.00% | 6 | Shares | 2026-10-09 | |
| Small SJS Investment Consulting Inc. Registered adviser | $24 | 0.00% | 1 | Shares | 2026-07-22 |