MNSB · MainStreet Bancshares, Inc.

$24.90 +0.11 (+0.44%) At close · Aug 26

Market Cap

$176.10M

7.12M

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.

Quarter:

Holders: 95

Total Value: $100,092,429

Total Shares: 4,053,969

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 95 13F filers · Δ vs Mar 31, 2026

Top Holder

13.5%

+0.4 pts

Top 5

48.5%

−2.7 pts

Top 10

68.8%

−4.5 pts

HHI

617

Broadly held−73

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +11

Institutional value: +6.4%

Shares held: -4.4%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+56,429	404,037
Large ACADIAN ASSET MANAGEMENT LLC	+49,269	183,245
Mega AMERICAN CENTURY COMPANIES INC	+49,060	101,604
Mega DIMENSIONAL FUND ADVISORS LP	+38,381	205,014
Mega CITADEL ADVISORS LLC	+34,826	58,344

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Small Fourthstone LLC	−337,370	47,432
Mega ALLIANCEBERNSTEIN L.P.	−136,330	418,393
Mega UBS Group AG	−80,076	33,102
Mega VANGUARD CAPITAL MANAGEMENT LLC	−39,021	262,466
Large FIRST MANHATTAN CO. LLC.	−26,377	161,731

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega AQR CAPITAL MANAGEMENT LLC	29,408	$726,081
Large HRT FINANCIAL LP	24,284	$599,571
Mid GSA CAPITAL PARTNERS LLP	23,242	$573,844
Small R Squared Ltd	20,799	$513,527
Mega TWO SIGMA INVESTMENTS, LP	16,699	$412,298

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Micro ELCO Management Co., LLC	22,312	$495,326
Large US BANCORP \DE\	1,000	$22,200
Large CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	381	$8,458
Large CWM, LLC	173	$3,840
Large MAI Capital Management	10	$222

Filter: New 17 Increased 42 Reduced 19 Sold out 6 Unchanged 17

Showing 95 of 95

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BANC FUNDS CO LLC

$13,472,814

13.46%

545,679

ALLIANCEBERNSTEIN L.P.

$10,330,123

10.32%

418,393

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Equitable Holdings, Inc.	418,393	$10,330,123	100.0%	Defined

BlackRock, Inc.

$9,975,670

9.97%

404,037

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	3,304	$81,575	0.8%	Sole
BlackRock Investment Management, LLC	19,512	$481,751	4.8%	Sole
BLACKROCK ADVISORS LLC	13,550	$334,549	3.4%	Sole
BlackRock Fund Advisors	263,414	$6,503,691	65.2%	Sole
BlackRock Institutional Trust Company, N.A.	104,156	$2,571,611	25.8%	Sole
BlackRock Investment Management (UK) Ltd.	101	$2,493	0.0%	Sole

WELLINGTON MANAGEMENT GROUP LLP

$8,319,567

8.31%

336,961

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Wellington Management Company LLP	336,961	$8,319,567	100.0%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$6,480,285

6.47%

262,466

DIMENSIONAL FUND ADVISORS LP

$5,061,793

5.06%

205,014

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Dimensional Fund Advisors Ltd.	826	$20,393	0.4%	Defined
DFA Australia Ltd.	1,710	$42,219	0.8%	Defined
Dimensional Ireland Ltd	10,108	$249,566	4.9%	Defined
Held directly	192,370	$4,749,615	93.8%	Sole

ACADIAN ASSET MANAGEMENT LLC

$4,524,319

4.52%

183,245

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Acadian Inc	183,245	$4,524,319	100.0%	Defined

FIRST MANHATTAN CO. LLC.

$3,993,138

3.99%

161,731

GEODE CAPITAL MANAGEMENT, LLC

$3,757,719

3.75%

152,196

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	22,209	$548,340	14.6%	Defined
Held directly	129,987	$3,209,379	85.4%	Defined

MARSHALL WACE, LLP

$2,967,589

2.96%

120,194

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	120,194	$2,967,589	100.0%	Other

STATE STREET CORP

$2,702,690

2.70%

109,465

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	109,465	$2,702,690	100.0%	Defined

AMERICAN CENTURY COMPANIES INC

$2,508,602

2.51%

101,604

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
AMERICAN CENTURY INVESTMENT MANAGEMENT INC	101,604	$2,508,602	100.0%	Defined

BRIDGEWAY CAPITAL MANAGEMENT, LLC

$1,643,144

1.64%

66,551

Cresset Asset Management, LLC

$1,457,697

1.46%

59,040

CITADEL ADVISORS LLC

$1,440,513

1.44%

58,344

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citadel Securities GP LLC	41,893	$1,034,338	71.8%	Defined
Held directly	16,451	$406,175	28.2%	Defined

NORTHERN TRUST CORP

$1,188,822

1.19%

48,150

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	47,222	$1,165,910	98.1%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	928	$22,912	1.9%	Other

Fourthstone LLC

$1,171,096

1.17%

47,432

VANGUARD PORTFOLIO MANAGEMENT LLC

$1,057,052

1.06%

42,813

Trexquant Investment LP

$975,872

0.97%

39,525

VANGUARD FIDUCIARY TRUST CO

$963,354

0.96%

39,018

Squarepoint Ops LLC

$919,282

0.92%

37,233

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Squarepoint Capital LLP	37,233	$919,282	100.0%	Defined

Empowered Funds, LLC

$917,751

0.92%

37,171

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Bridgeway Capital Management, LLC	37,171	$917,751	100.0%	Other

UBS Group AG

$817,286

0.82%

33,102

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	76	$1,876	0.2%	Defined
UBS AG	9,484	$234,159	28.7%	Defined
UBS Europe SE	23,542	$581,251	71.1%	Defined

Connor, Clark & Lunn Investment Management Ltd.

$750,205

0.75%

30,385

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Manager 1	30,385	$750,205	100.0%	Sole

AQR CAPITAL MANAGEMENT LLC

$726,081

0.73%

29,408

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Prism Planning Partners LLC	12	$296	0.0%	Other
Arax Advisory Partners	194	$4,789	0.7%	Other
HALBERT HARGROVE GLOBAL ADVISORS, LLC	137	$3,382	0.5%	Other
Stokes Family Office, LLC	21	$518	0.1%	Other
Held directly	29,044	$717,096	98.8%	Defined

STRS OHIO

$644,409

0.64%

26,100

MORGAN STANLEY

$600,358

0.60%

24,316

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	50	$1,234	0.2%	Defined
MORGAN STANLEY & CO. LLC	1,841	$45,454	7.6%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	15,788	$389,805	64.9%	Defined
MORGAN STANLEY SMITH BARNEY LLC	3,042	$75,106	12.5%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	3,595	$88,759	14.8%	Defined

HRT FINANCIAL LP

$599,571

0.60%

24,284

MENDON CAPITAL ADVISORS CORP

$577,004

0.58%

23,370

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ELCO Management Co., LLC	10,221	$252,356	43.7%	Sole
Hurricane Capital Partners Ltd	13,149	$324,648	56.3%	Sole

GSA CAPITAL PARTNERS LLP

$573,844

0.57%

23,242

Creative Planning

$562,759

0.56%

22,793

R Squared Ltd

$513,527

0.51%

20,799

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$480,072

0.48%

19,444

Daytona Street Capital LLC

$444,420

0.44%

18,000

Nuveen, LLC

$441,136

0.44%

17,867

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Nuveen Asset Management, LLC joint	8,706	$214,951	48.7%	Defined
TEACHERS ADVISORS, LLC joint	9,161	$226,185	51.3%	Defined

Bank of New York Mellon Corp

$429,999

0.43%

17,416

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	7,089	$175,027	40.7%	Defined
The Bank of New York Mellon	10,326	$254,948	59.3%	Defined
Held directly	1	$24	0.0%	Defined

TWO SIGMA INVESTMENTS, LP

$412,298

0.41%

16,699

BARCLAYS PLC

$391,632

0.39%

15,862

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	15,801	$390,126	99.6%	Defined
BARCLAYS CAPITAL INC.	61	$1,506	0.4%	Defined

LOS ANGELES CAPITAL MANAGEMENT LLC

$355,560

0.36%

14,401

XTX Topco Ltd

$342,400

0.34%

13,868

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
XTX EXECUTION SERVICES LLC joint	13,868	$342,400	100.0%	Defined

HighTower Advisors, LLC

$333,191

0.33%

13,495

Atlantic Union Bankshares Corp

$311,094

0.31%

12,600

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
West Financial Services, Inc.	12,600	$311,094	100.0%	Sole

RENAISSANCE TECHNOLOGIES LLC

$271,590

0.27%

11,000

GOLDMAN SACHS GROUP INC

$262,405

0.26%

10,628

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	10,628	$262,405	100.0%	Defined

Point72 Asset Management, L.P.

$258,948

0.26%

10,488

SEI INVESTMENTS CO

$244,801

0.24%

9,915

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI INVESTMENTS MANAGEMENT CORP	6	$148	0.1%	Sole
SEI TRUST CO	9,909	$244,653	99.9%	Sole

Russell Investments Group, Ltd.

$243,022

0.24%

9,843

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	3,861	$95,327	39.2%	Defined
Russell Investments Limited joint	5,982	$147,695	60.8%	Other

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP

$240,283

0.24%

9,732

Quadrature Capital Ltd

$239,665

0.24%

9,707

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Quadrature US Inc.	9,707	$239,665	100.0%	Other

OCCUDO QUANTITATIVE STRATEGIES LP

$221,469

0.22%

8,970

CALDWELL SUTTER CAPITAL, INC.

$217,716

0.22%

8,818

BNP PARIBAS ARBITRAGE, SA

$183,496

0.18%

7,432

OSAIC HOLDINGS, INC.

$165,644

0.17%

6,709

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	630	$15,554	9.4%	Defined
Osaic Advisory Services, LLC	6,079	$150,090	90.6%	Defined

Spire Wealth Management

$154,485

0.15%

6,257

RHUMBLINE ADVISERS

$136,239

0.14%

5,518

Hughes Financial Services, LLC

$134,313

0.13%

5,440

WELLS FARGO & COMPANY/MN

$130,905

0.13%

5,302

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	5,049	$124,659	95.2%	Defined
Wells Fargo Securities, LLC	253	$6,246	4.8%	Defined

DEUTSCHE BANK AG\

$128,412

0.13%

5,201

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS Investments UK Ltd	5,201	$128,412	100.0%	Defined

NEW YORK STATE COMMON RETIREMENT FUND

$86,019

0.09%

3,484

CITIGROUP INC

$72,118

0.07%

2,921

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	2,921	$72,118	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$71,996

0.07%

2,916

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	2,916	$71,996	100.0%	Defined

JPMORGAN CHASE & CO

$71,896

0.07%

2,912

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	2,824	$69,724	97.0%	Defined
J.P. Morgan Securities plc	88	$2,172	3.0%	Defined

Cassaday & Co Wealth Management LLC

$67,403

0.07%

2,730

Vanguard Global Advisers, LLC

$63,280

0.06%

2,563

Police & Firemen's Retirement System of New Jersey

$43,528

0.04%

1,763

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	1,763	$43,528	100.0%	Defined

Mirae Asset Global Investments Co., Ltd.

$29,381

0.03%

1,190

Steward Partners Investment Advisory, LLC

$25,924

0.03%

1,050

FMR LLC

$23,529

0.02%

953

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	953	$23,529	100.0%	Defined

FIRST UNITED BANK & TRUST

$19,505

0.02%

790

ROYAL BANK OF CANADA

$19,232

0.02%

779

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	236	$5,826	30.3%	Defined
RBC Capital Markets, LLC	543	$13,406	69.7%	Defined

Ameritas Investment Partners, Inc.

$17,727

0.02%

718

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	718	$17,727	100.0%	Other

Legal & General Group Plc

$15,702

0.02%

636

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	636	$15,702	100.0%	Defined

Tower Research Capital LLC (TRC)

$15,283

0.02%

619

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	619	$15,283	100.0%	Defined

State of Alaska, Department of Revenue

$14,715

0.01%

596

Rockefeller Capital Management L.P.

$13,777

0.01%

558

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
ROCKEFELLER FINANCIAL LLC	558	$13,777	100.0%	Defined

TOTH FINANCIAL ADVISORY CORP

$13,456

0.01%

545

FEDERATED HERMES, INC.

$11,900

0.01%

482

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
FEDERATED MDTA LLC	482	$11,900	100.0%	Defined

PNC FINANCIAL SERVICES GROUP, INC.

$4,197

0.00%

170

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	170	$4,197	100.0%	Defined

Arax Advisory Partners

$3,407

0.00%

138

GAMMA Investing LLC

$3,061

0.00%

124

Sterling Capital Management LLC

$2,987

0.00%

121

Allworth Financial LP

$2,987

0.00%

121

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$2,172

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	88	$2,172	100.0%	Defined

SBI Securities Co., Ltd.

$2,049

0.00%

Integrated Wealth Concepts LLC

$2,049

0.00%

IFP Advisors, Inc

$1,407

0.00%

ROTHSCHILD INVESTMENT LLC

$592

0.00%

Basecamp Wealth Advisors LLC

$444

0.00%

EverSource Wealth Advisors, LLC

$418

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BMSS Wesson Wealth Solutions, LLC	2	$49	11.7%	Sole
Held directly	15	$369	88.3%	Sole

Farther Finance Advisors, LLC

$370

0.00%

Covestor Ltd

$345

0.00%

Essential Partners LLC

$172

0.00%

True Wealth Design, LLC

$172

0.00%

Wealth Enhancement Trust Services, Inc.

$74

0.00%

SJS Investment Consulting Inc.

$24

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	1,000	$22,200	100.0%	Other

Key facts CIK 1693577 CUSIP 56064Y100 13F (30d) 83 filings 80 filers Visit website Investor relations