Middlefield Banc Corp
MBCN • NASDAQ
Middlefield Banc Corp is a banks - regional company in the financial services sector on NASDAQ, led by Ronald L. Zimmerly, Jr., with a market cap of $290.2M. As of Q3 2025, 34% of shares are held by 72 institutional investors, with Castle Creek Capital Partners VI, LP as the largest holder at 6.94%.
Chief Executive OfficerRonald L. Zimmerly, Jr.
Market Cap$290.2M
Banks - Regional
Financial Services
Employees256.0
Websitemiddlefieldbank.bank
Country
United States of America
Overview
Overview of institutional ownership in MBCN as of Q3 2025 with a market cap of $242.5M
All Institutions
- Institutions
- 72
- Value Held
- $83.2M
- Shares Held
- 2.8M
- Avg Position
- $1.2M
- Median Position
- $247.7K
Hedge Funds
- Hedge Funds
- 4
- Value Held
- $5.1M
- Shares Held
- 170.0K
- Avg Position
- $1.3M
- Median Position
- $969.7K
Ownership Breakdown
Based on market cap of $242.5M as of Q3 2025. Institutional (non-HF) excludes hedge funds to avoid double counting.
Biggest Investors
Institutions with the largest positions in MBCN as of Q3 2025
| Institution | Position Value |
|---|---|
 Castle Creek Capital Partners VI, LP Private Equity | $16.8M 30.11% of portfolio |
B BlackRock, Inc. Institution | $14.2M 0.00% of portfolio |
 VANGUARD GROUP INC Institution | $12.4M 0.00% of portfolio |
 ALLIANCEBERNSTEIN L.P. Long Only Manager | $5.9M 0.00% of portfolio |
 GEODE CAPITAL MANAGEMENT LLC ETF Provider | $5.1M 0.00% of portfolio |
 STATE STREET CORP Institution | $3.1M 0.00% of portfolio |
 Elizabeth Park Capital Advisors, Ltd. Hedge Fund•Long/Short | $2.9M 2.30% of portfolio |
 DIMENSIONAL FUND ADVISORS LP Long Only Manager | $2.5M 0.00% of portfolio |
 NORTHERN TRUST CORP Institution | $1.7M 0.00% of portfolio |
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager | $1.5M 0.03% of portfolio |
Net Capital Flow
Institutional buying and selling activity for MBCN in Q3 2025
- Net Flow
- −$854.8K
- Buyers
- 22
- Sellers
- 27
- Total Bought
- +$1.7M
- Total Sold
- −$2.6M
- Avg Position
- $1.2M
Biggest Buyers
| Institution | Net Bought |
|---|---|
ALLIANCEBERNSTEIN L.P. Long Only Manager | +$534.3K +17.8K shares |
Elizabeth Park Capital Advisors, Ltd. Hedge Fund•Long/Short | +$305.8K +10.2K shares |
 CITADEL ADVISORS LLC Hedge Fund•Multi-Strategy | +$229.5K +7.6K shares |
 GOLDMAN SACHS GROUP INC Institution | +$214.2K +7.1K shares |
J JANE STREET GROUP, LLC Institution | +$153.0K +5.1K shares |
 Cetera Investment Advisers RIA/Wealth | +$60.0K +2.0K shares |
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager | +$54.6K +1.8K shares |
 Empowered Funds, LLC ETF Provider | +$54.6K +1.8K shares |
 JPMORGAN CHASE & CO Institution | +$39.4K +1.3K shares |
 WELLS FARGO & COMPANY/MN Institution | +$25.1K +836.0 shares |
Biggest Sellers
| Institution | Net Sold |
|---|---|
F Fisher Asset Management, LLC Institution | −$1.1M −35.1K shares |
 SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | −$317.0K −10.5K shares |
B BlackRock, Inc. Institution | −$185.0K −6.2K shares |
 MORGAN STANLEY RIA/Wealth | −$166.7K −5.6K shares |
R ROYAL BANK OF CANADA Institution | −$136.0K −4.5K shares |
 DEUTSCHE BANK AG\ Institution | −$104.8K −3.5K shares |
 Hartland & Co., LLC RIA/Wealth | −$95.5K −3.2K shares |
 UBS Group AG Institution | −$75.9K −2.5K shares |
T Tower Research Capital LLC Institution | −$71.6K −2.4K shares |
 CITIGROUP INC Institution | −$71.0K −2.4K shares |
Entry and Exit Activity
Institutions that initiated new positions or completely exited MBCN in Q3 2025
- New Positions
- 4
- New Value
- $674.4K
- Exited Positions
- 4
- Exited Value
- $1.5M
New Positions
| Institution | Position Value |
|---|---|
 Prospera Financial Services RIA/Wealth | $400.0K 13.3K shares |
 Quantinno Capital Management LP Hedge Fund•Market Neutral | $265.0K 8.8K shares |
J JONES FINANCIAL COMPANIES LLLP Institution | $9.4K 303.0 shares |
 Sunbelt Securities, Inc. RIA/Wealth | $30.0 1.0 shares |
Exited Positions
| Institution | Previous Position |
|---|---|
F Fisher Asset Management, LLC Institution | $1.1M 35.1K shares |
SUSQUEHANNA INTERNATIONAL GROUP, LLP Private Equity | $317.0K 10.5K shares |
DEUTSCHE BANK AG\ Institution | $104.8K 3.5K shares |
C Covestor Ltd Institution | - - shares |
Options Activity
Institutions with the largest Call and Put options positions in MBCN as of Q3 2025
- Call Positions
- 0
- Call Value
- -
- Put Positions
- 0
- Put Value
- -
Call Positions
| Institution | Position Value |
|---|---|
| No call positions found | |
Put Positions
| Institution | Position Value |
|---|---|
| No put positions found | |
Most Committed Institutions
Institutions with MBCN as the highest % of their portfolio as of Q3 2025
| Institution | Portfolio Weight |
|---|---|
Castle Creek Capital Partners VI, LP Private Equity | 30.11% $16.8M |
Elizabeth Park Capital Advisors, Ltd. Hedge Fund•Long/Short | 2.30% $2.9M |
 REDMONT WEALTH ADVISORS LLC RIA/Wealth | 1.10% $794.2K |
 Riggs Asset Managment Co. Inc. RIA/Wealth | 0.12% $551.9K |
0.10% $272.0K | |
 Fundamentun, LLC RIA/Wealth | 0.05% $1.2M |
B BRIDGEWAY CAPITAL MANAGEMENT INC Long Only Manager | 0.03% $1.5M |
Hartland & Co., LLC RIA/Wealth | 0.02% $1.2M |
 YHB Investment Advisors, Inc. RIA/Wealth | 0.01% $200.0K |
H HUNTINGTON NATIONAL BANK Long Only Manager | 0.01% $1.1M |
Hedge Fund Spotlight
Discover hedge funds investing in MBCN
RENAISSANCE TECHNOLOGIES LLC
Hedge Fund • Quant
Portfolio ManagerDavid Allen Lippe
- Portfolio Value
- $75.8B
- Positions
- 3,419
- Last Reported
- Q3 2025
Sector Allocation
Position in Middlefield Banc Corp
- Market Value
- $1.1M
- Shares Held
- 36.1K
- Portfolio Weight
- 0.00%
- Owned Since
- 2018-Q1
| Top Holding | Sector | Market Value | Weight |
|---|---|---|---|
Software - Infrastructure Technology | $1.6B | 2.06% | |
Semiconductors Technology | $1.1B | 1.39% | |
Electronic Gaming & Multimedia Technology | $953.5M | 1.26% |
