Who owns MCB (MCB)
Which tracked institutional funds hold MCB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MCB company fundamentals →
Ownership as of the 2026-Q1 13F filings. 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.
How the tape is positioned
The tracked-fund tape on MCB is one-sided between 2025-Q4 and 2026-Q1: 71 added or opened and 15 trimmed or exited — on balance accumulating.
A prompt to read the filings, not a verdict. 13F is a quarter-end snapshot disclosed up to 45 days late; a fund adds or exits for mandate, benchmark, and timing reasons that have nothing to do with a view on the stock. This is a starting question, not a signal to trade.
Conviction spread
MCB’s largest tracked holder by dollar value, WELLINGTON MANAGEMENT GROUP LLP, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp conviction gap — its largest holder concentrates the name more heavily than the typical one.
Book-share is each fund’s reported value in MCB divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.
Institutional & insider positioning
Between 2025-Q4 and 2026-Q1, across 191 tracked filers holding MCB, 120 increased or opened the position and 62 reduced or closed it; over the same quarter, open-market insider Form 4s were net purchases.
This fuses two public signals for the same quarter — how tracked institutions changed their positions and whether insiders bought or sold in the open market. It describes what was filed; it is a starting question, not a verdict or a signal to trade.
New buyers & exits
Funds opening or closing a position in MCB between the 2025-Q4 and 2026-Q1 13F filings, and the largest changes among funds holding it in both. New buyers and exits are counted on fund presence (split-invariant); adds and trims are measured on reported value.
New buyers 25
- VANGUARD CAPITAL MANAGEMENT LLC$42M
- KENNEDY CAPITAL MANAGEMENT LLC$18M
- Fourthstone LLC$10M
- VANGUARD PORTFOLIO MANAGEMENT LLC$8M
- Qube Research & Technologies Ltd$8M
- SOROS FUND MANAGEMENT LLC$6M
Full exits 5
- VANGUARD GROUP INC$40M
- Verition Fund Management LLC$9M
- SUSQUEHANNA FUNDAMENTAL INVESTMENTS, LLC$760K
- TWO SIGMA ADVISERS, LP$725K
- Y-Intercept (Hong Kong) Ltd$530K
Largest adds
- WELLINGTON MANAGEMENT GROUP LLP$55M
- CITADEL ADVISORS LLC$25M
- UBS Group AG$23M
- MILLENNIUM MANAGEMENT LLC$22M
- ALLIANCEBERNSTEIN L.P.$13M
- BlackRock, Inc.$11M
Largest trims
- FMR LLC$30M
- JPMORGAN CHASE & CO$2M
- ROYCE & ASSOCIATES LP$2M
- STATE OF WISCONSIN INVESTMENT BOARD$1M
- PRICE T ROWE ASSOCIATES INC /MD/$808K
- BARCLAYS PLC$684K
Institutional holders
One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding. Rows marked stale are from an earlier filing than the security’s latest quarter — that fund is absent from the newest snapshot (position exited, or reported under a different name).
| Fund | Shares | Reported value | % of value | Quarter |
|---|---|---|---|---|
| WELLINGTON MANAGEMENT GROUP LLP added | 1,203,091 | $100M | 9.5% | 2026-Q1 |
| BlackRock, Inc. added | 1,021,038 | $85M | 8.1% | 2026-Q1 |
| Patriot Financial Partners GP II, L.P. | 764,884 | $64M | 6.1% | 2026-Q1 |
| ADAGE CAPITAL PARTNERS GP, L.L.C. added | 584,633 | $49M | 4.6% | 2026-Q1 |
| VANGUARD CAPITAL MANAGEMENT LLC new | 501,559 | $42M | 4.0% | 2026-Q1 |
| DIMENSIONAL FUND ADVISORS LP added | 459,791 | $38M | 3.6% | 2026-Q1 |
| STATE STREET CORP added | 383,556 | $32M | 3.0% | 2026-Q1 |
| CITADEL ADVISORS LLC added | 377,255 | $31M | 3.0% | 2026-Q1 |
| UBS Group AG added | 339,010 | $28M | 2.7% | 2026-Q1 |
| AMERICAN CENTURY COMPANIES INC added | 331,439 | $28M | 2.6% | 2026-Q1 |
| MILLENNIUM MANAGEMENT LLC added | 323,889 | $27M | 2.6% | 2026-Q1 |
| GEODE CAPITAL MANAGEMENT, LLC added | 262,488 | $22M | 2.1% | 2026-Q1 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 217,892 | $18M | 1.7% | 2026-Q1 |
| BASSWOOD CAPITAL MANAGEMENT, L.L.C. trimmed | 210,367 | $18M | 1.7% | 2026-Q1 |
| Bank of New York Mellon Corp trimmed | 193,630 | $16M | 1.5% | 2026-Q1 |
| ALLIANCEBERNSTEIN L.P. added | 177,218 | $14M | 1.3% | 2026-Q1 |
| MORGAN STANLEY added | 150,655 | $13M | 1.2% | 2026-Q1 |
| Nuveen, LLC added | 150,184 | $13M | 1.2% | 2026-Q1 |
| BANC FUNDS CO LLC added | 142,221 | $12M | 1.1% | 2026-Q1 |
| BANK OF AMERICA CORP /DE/ added | 141,613 | $12M | 1.1% | 2026-Q1 |
| Pacific Ridge Capital Partners, LLC added | 136,780 | $11M | 1.1% | 2026-Q1 |
| Fourthstone LLC trimmed | 125,601 | $10M | 1.0% | 2026-Q1 |
| Russell Investments Group, Ltd. added | 124,134 | $10M | 1.0% | 2026-Q1 |
| JPMORGAN CHASE & CO trimmed | 124,525 | $10M | 1.0% | 2026-Q1 |
| D. E. Shaw & Co., Inc. added | 117,443 | $10M | 0.9% | 2026-Q1 |
| Ranger Investment Management, L.P. trimmed | 104,835 | $9M | 0.8% | 2026-Q1 |
| PRUDENTIAL FINANCIAL INC added | 102,265 | $9M | 0.8% | 2026-Q1 |
| VANGUARD PORTFOLIO MANAGEMENT LLC new | 101,544 | $8M | 0.8% | 2026-Q1 |
| TWO SIGMA INVESTMENTS, LP added | 96,619 | $8M | 0.8% | 2026-Q1 |
| NORTHERN TRUST CORP added | 96,050 | $8M | 0.8% | 2026-Q1 |
| Qube Research & Technologies Ltd added | 92,396 | $8M | 0.7% | 2026-Q1 |
| TUDOR INVESTMENT CORP ET AL added | 92,197 | $8M | 0.7% | 2026-Q1 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC added | 86,196 | $7M | 0.7% | 2026-Q1 |
| GOLDMAN SACHS GROUP INC added | 82,759 | $7M | 0.7% | 2026-Q1 |
| Stieven Capital Advisors, L.P. added | 75,000 | $6M | 0.6% | 2026-Q1 |
| SOROS FUND MANAGEMENT LLC new | 75,000 | $6M | 0.6% | 2026-Q1 |
| VANGUARD FIDUCIARY TRUST CO new | 71,738 | $6M | 0.6% | 2026-Q1 |
| FRANKLIN RESOURCES INC trimmed | 68,037 | $6M | 0.5% | 2026-Q1 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC trimmed | 66,451 | $6M | 0.5% | 2026-Q1 |
| Trexquant Investment LP added | 63,417 | $5M | 0.5% | 2026-Q1 |
| STATE OF WISCONSIN INVESTMENT BOARD trimmed | 61,231 | $5M | 0.5% | 2026-Q1 |
| AQR CAPITAL MANAGEMENT LLC added | 60,619 | $5M | 0.5% | 2026-Q1 |
| ACADIAN ASSET MANAGEMENT LLC trimmed | 57,682 | $5M | 0.5% | 2026-Q1 |
| AMERIPRISE FINANCIAL INC trimmed | 54,157 | $5M | 0.4% | 2026-Q1 |
| Invesco Ltd. added | 49,549 | $4M | 0.4% | 2026-Q1 |
| PANAGORA ASSET MANAGEMENT INC added | 49,256 | $4M | 0.4% | 2026-Q1 |
| EJF Capital LP added | 45,250 | $4M | 0.4% | 2026-Q1 |
| Empowered Funds, LLC | 43,151 | $4M | 0.3% | 2026-Q1 |
| SEVEN GRAND MANAGERS, LLC new | 40,000 | $3M | 0.3% | 2026-Q1 |
| Lido Advisors, LLC added | 34,484 | $3M | 0.3% | 2026-Q1 |
| Engineers Gate Manager LP added | 32,873 | $3M | 0.3% | 2026-Q1 |
| ALGERT GLOBAL LLC trimmed | 32,270 | $3M | 0.3% | 2026-Q1 |
| Harbor Advisors LLC | 31,500 | $3M | 0.2% | 2026-Q1 |
| Point72 Asset Management, L.P. added | 30,120 | $3M | 0.2% | 2026-Q1 |
| Sterling Capital Management LLC trimmed | 29,896 | $2M | 0.2% | 2026-Q1 |
| Knights of Columbus Asset Advisors LLC trimmed | 28,297 | $2M | 0.2% | 2026-Q1 |
| Sippican Capital Advisors trimmed | 27,826 | $2M | 0.2% | 2026-Q1 |
| JANE STREET GROUP, LLC added | 26,262 | $2M | 0.2% | 2026-Q1 |
| BNP PARIBAS FINANCIAL MARKETS added | 25,100 | $2M | 0.2% | 2026-Q1 |
| Squarepoint Ops LLC trimmed | 25,054 | $2M | 0.2% | 2026-Q1 |
| EMERALD MUTUAL FUND ADVISERS TRUST trimmed | 23,069 | $2M | 0.2% | 2026-Q1 |
| JUPITER ASSET MANAGEMENT LTD | 22,278 | $2M | 0.2% | 2026-Q1 |
| Swiss National Bank added | 22,000 | $2M | 0.2% | 2026-Q1 |
| PRINCIPAL FINANCIAL GROUP INC added | 21,422 | $2M | 0.2% | 2026-Q1 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 21,083 | $2M | 0.2% | 2026-Q1 |
| LPL Financial LLC added | 19,362 | $2M | 0.2% | 2026-Q1 |
| Creative Planning added | 19,315 | $2M | 0.2% | 2026-Q1 |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC added | 18,576 | $2M | 0.1% | 2026-Q1 |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP added | 17,949 | $1M | 0.1% | 2026-Q1 |
| SALZHAUER MICHAEL trimmed | 17,893 | $1M | 0.1% | 2026-Q1 |
| SEGALL BRYANT & HAMILL, LLC trimmed | 17,683 | $1M | 0.1% | 2026-Q1 |
| Vanguard Global Advisers, LLC new | 15,892 | $1M | 0.1% | 2026-Q1 |
| Centiva Capital, LP added | 13,702 | $1M | 0.1% | 2026-Q1 |
| Unison Advisors LLC added | 13,552 | $1M | 0.1% | 2026-Q1 |
| ZACKS INVESTMENT MANAGEMENT new | 13,470 | $1M | 0.1% | 2026-Q1 |
| Quantbot Technologies LP added | 13,222 | $1M | 0.1% | 2026-Q1 |
| RHUMBLINE ADVISERS trimmed | 13,093 | $1M | 0.1% | 2026-Q1 |
| CITIGROUP INC trimmed | 12,890 | $1M | 0.1% | 2026-Q1 |
| Rafferty Asset Management, LLC trimmed | 12,608 | $1M | 0.1% | 2026-Q1 |
| ExodusPoint Capital Management, LP trimmed | 12,603 | $1M | 0.1% | 2026-Q1 |
| RENAISSANCE TECHNOLOGIES LLC added | 12,400 | $1M | 0.1% | 2026-Q1 |
| Integrated Quantitative Investments LLC new | 11,666 | $972K | 0.1% | 2026-Q1 |
| XTX Topco Ltd added | 11,631 | $969K | 0.1% | 2026-Q1 |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ trimmed | 10,729 | $894K | 0.1% | 2026-Q1 |
| WELLS FARGO & COMPANY/MN trimmed | 10,596 | $883K | 0.1% | 2026-Q1 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP added | 10,460 | $871K | 0.1% | 2026-Q1 |
| FMR LLC trimmed | 10,300 | $858K | 0.1% | 2026-Q1 |
| SEI INVESTMENTS CO added | 10,050 | $837K | 0.1% | 2026-Q1 |
| PATRIOT FINANCIAL PARTNERS GP, LP | 764,884 | $54M | 5.1% | 2025-Q2 stale |
| VANGUARD GROUP INC trimmed | 526,444 | $40M | 3.8% | 2025-Q4 stale |
| Philadelphia Financial Management of San Francisco, LLC added | 311,781 | $22M | 2.1% | 2025-Q2 stale |
| Verition Fund Management LLC trimmed | 112,172 | $9M | 0.8% | 2025-Q4 stale |
| Assenagon Asset Management S.A. trimmed | 18,690 | $1M | 0.1% | 2025-Q2 stale |
| SummerHaven Investment Management, LLC added | 18,247 | $1M | 0.1% | 2025-Q2 stale |
| Sheets Smith Investment Management new | 18,170 | $1M | 0.1% | 2025-Q2 stale |
| Black Maple Capital Management LP new | 21,481 | $1M | 0.1% | 2025-Q1 stale |
| VICTORY CAPITAL MANAGEMENT INC added | 17,615 | $986K | 0.1% | 2025-Q1 stale |
| PICTON MAHONEY ASSET MANAGEMENT added | 11,514 | $862K | 0.1% | 2025-Q3 stale |
| Ulysses Management LLC new | 15,000 | $840K | 0.1% | 2025-Q1 stale |
| Thrivent Financial for Lutherans added | 14,817 | $830K | 0.1% | 2025-Q1 stale |
Ownership over time
Tracked institutional holder count and total shares held by filing quarter (independent scales). The curated-era tail and any mid-ingest latest quarter are handled honestly — a partial quarter is not drawn as a collapse.
Reading this table
Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.
About 13F filings
A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.