Who owns Mechanics Bank (MCHB)
Which tracked institutional funds hold MCHB, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MCHB company fundamentals →
Ownership as of the 2026-Q2 13F filings (latest filed 2026-09-22). 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
30 tracked funds added or opened MCHB while 25 trimmed or exited it between 2026-Q1 and 2026-Q2 — the tape is split. When large holders disagree on a name, the funds moving first are sometimes ahead of the story.
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
MCHB’s largest tracked holder by dollar value, BlackRock, Inc., 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 gap the other way — the median holder sizes MCHB more heavily than its largest holder by dollar value does.
Book-share is each fund’s reported value in MCHB 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 2026-Q1 and 2026-Q2, across 138 tracked filers holding MCHB, 72 increased or opened the position and 71 reduced or closed it; over the same quarter, open-market insider Form 4s were net sales.
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 MCHB between the 2026-Q1 and 2026-Q2 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 9
- Jump Financial, LLC$2M
- BOOTHBAY FUND MANAGEMENT, LLC$1M
- SIERRA SUMMIT ADVISORS LLC$1M
- PDT Partners, LLC$911K
- Atom Investors LP$815K
- Weiss Asset Management LP$741K
Full exits 10
- GW&K Investment Management, LLC$17M
- Philosophy Capital Management LLC$9M
- Philadelphia Financial Management of San Francisco, LLC$8M
- Stieven Capital Advisors, L.P.$6M
- MENDON CAPITAL ADVISORS CORP$5M
- Capital Planning Advisors, LLC$5M
Largest adds
- TWO SIGMA INVESTMENTS, LP$6M
- FIRST TRUST ADVISORS LP$4M
- CITADEL ADVISORS LLC$4M
- RENAISSANCE TECHNOLOGIES LLC$4M
- Nuveen, LLC$3M
- Simcoe Capital LLC$3M
Largest trims
- MALTESE CAPITAL MANAGEMENT LLC$5M
- VANGUARD CAPITAL MANAGEMENT LLC$4M
- ALLIANCEBERNSTEIN L.P.$4M
- CenterBook Partners LP$3M
- J. Goldman & Co LP$3M
- GOLDMAN SACHS GROUP INC$3M
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 |
|---|---|---|---|---|
| BlackRock, Inc. trimmed | 3,082,045 | $49M | 9.9% | 2026-Q2 |
| Mechanics Bank Trust Department trimmed | 2,242,540 | $36M | 7.2% | 2026-Q2 |
| STATE STREET CORP added | 1,722,446 | $27M | 5.5% | 2026-Q2 |
| VANGUARD CAPITAL MANAGEMENT LLC trimmed | 1,649,674 | $26M | 5.3% | 2026-Q2 |
| GEODE CAPITAL MANAGEMENT, LLC trimmed | 1,377,662 | $22M | 4.4% | 2026-Q2 |
| Composition Wealth, LLC | 1,115,781 | $18M | 3.6% | 2026-Q2 |
| Bank of New York Mellon Corp trimmed | 1,088,061 | $17M | 3.5% | 2026-Q2 |
| DIMENSIONAL FUND ADVISORS LP trimmed | 761,455 | $12M | 2.4% | 2026-Q2 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC trimmed | 532,287 | $8M | 1.7% | 2026-Q2 |
| Sculptor Capital LP | 512,727 | $8M | 1.6% | 2026-Q2 |
| Simcoe Capital LLC added | 507,384 | $8M | 1.6% | 2026-Q2 |
| TWO SIGMA INVESTMENTS, LP added | 507,019 | $8M | 1.6% | 2026-Q2 |
| GOLDMAN SACHS GROUP INC trimmed | 452,348 | $7M | 1.4% | 2026-Q2 |
| J. Goldman & Co LP trimmed | 449,959 | $7M | 1.4% | 2026-Q2 |
| RENAISSANCE TECHNOLOGIES LLC added | 418,892 | $7M | 1.3% | 2026-Q2 |
| CITADEL ADVISORS LLC added | 392,567 | $6M | 1.3% | 2026-Q2 |
| ALLIANCEBERNSTEIN L.P. trimmed | 392,493 | $6M | 1.2% | 2026-Q2 |
| NORTHERN TRUST CORP trimmed | 354,036 | $6M | 1.1% | 2026-Q2 |
| Siena Capital Partners GP, LLC | 353,216 | $6M | 1.1% | 2026-Q2 |
| MORGAN STANLEY trimmed | 318,288 | $5M | 1.0% | 2026-Q2 |
| FIRST TRUST ADVISORS LP added | 318,115 | $5M | 1.0% | 2026-Q2 |
| VANGUARD FIDUCIARY TRUST CO trimmed | 303,976 | $5M | 1.0% | 2026-Q2 |
| Nuveen, LLC added | 300,888 | $5M | 1.0% | 2026-Q2 |
| CenterBook Partners LP trimmed | 281,168 | $4M | 0.9% | 2026-Q2 |
| VANGUARD PORTFOLIO MANAGEMENT LLC trimmed | 269,588 | $4M | 0.9% | 2026-Q2 |
| Squarepoint Ops LLC trimmed | 257,233 | $4M | 0.8% | 2026-Q2 |
| Pinnacle Holdings, LLC added | 253,348 | $4M | 0.8% | 2026-Q2 |
| MALTESE CAPITAL MANAGEMENT LLC trimmed | 175,000 | $3M | 0.6% | 2026-Q2 |
| CCG WEALTH MANAGEMENT, LLC trimmed | 171,041 | $3M | 0.5% | 2026-Q2 |
| UBS Group AG trimmed | 116,457 | $2M | 0.4% | 2026-Q2 |
| CALDWELL SUTTER CAPITAL, INC. | 103,285 | $2M | 0.3% | 2026-Q2 |
| Numerai GP LLC added | 98,882 | $2M | 0.3% | 2026-Q2 |
| Jump Financial, LLC added | 97,997 | $2M | 0.3% | 2026-Q2 |
| Waverly Advisors, LLC added | 94,733 | $2M | 0.3% | 2026-Q2 |
| VOYA INVESTMENT MANAGEMENT LLC trimmed | 91,017 | $1M | 0.3% | 2026-Q2 |
| BANK OF AMERICA CORP /DE/ trimmed | 84,017 | $1M | 0.3% | 2026-Q2 |
| BOOTHBAY FUND MANAGEMENT, LLC new | 75,298 | $1M | 0.2% | 2026-Q2 |
| KENNEDY CAPITAL MANAGEMENT LLC added | 73,901 | $1M | 0.2% | 2026-Q2 |
| Quantinno Capital Management LP added | 64,910 | $1M | 0.2% | 2026-Q2 |
| SIERRA SUMMIT ADVISORS LLC new | 63,203 | $1M | 0.2% | 2026-Q2 |
| EMERALD MUTUAL FUND ADVISERS TRUST | 60,462 | $961K | 0.2% | 2026-Q2 |
| PDT Partners, LLC added | 57,315 | $911K | 0.2% | 2026-Q2 |
| Atom Investors LP new | 51,283 | $815K | 0.2% | 2026-Q2 |
| RHUMBLINE ADVISERS added | 50,061 | $796K | 0.2% | 2026-Q2 |
| BARCLAYS PLC trimmed | 49,965 | $794K | 0.2% | 2026-Q2 |
| CITIGROUP INC added | 49,720 | $791K | 0.2% | 2026-Q2 |
| Invesco Ltd. trimmed | 47,997 | $763K | 0.2% | 2026-Q2 |
| Weiss Asset Management LP new | 46,628 | $741K | 0.1% | 2026-Q2 |
| BNP PARIBAS FINANCIAL MARKETS added | 45,956 | $731K | 0.1% | 2026-Q2 |
| Jain Global LLC new | 45,500 | $723K | 0.1% | 2026-Q2 |
| Odyssean, LLC new | 45,188 | $718K | 0.1% | 2026-Q2 |
| Graham Capital Management, L.P. trimmed | 44,933 | $714K | 0.1% | 2026-Q2 |
| STATE OF WISCONSIN INVESTMENT BOARD added | 44,800 | $712K | 0.1% | 2026-Q2 |
| DRW Securities, LLC new | 41,070 | $653K | 0.1% | 2026-Q2 |
| PRICE T ROWE ASSOCIATES INC /MD/ trimmed | 40,501 | $644K | 0.1% | 2026-Q2 |
| DEUTSCHE BANK AG\ added | 39,737 | $632K | 0.1% | 2026-Q2 |
| Rafferty Asset Management, LLC trimmed | 39,017 | $620K | 0.1% | 2026-Q2 |
| WELLS FARGO & COMPANY/MN added | 34,581 | $550K | 0.1% | 2026-Q2 |
| Farther Finance Advisors, LLC added | 31,801 | $506K | 0.1% | 2026-Q2 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP trimmed | 30,555 | $486K | 0.1% | 2026-Q2 |
| MILLENNIUM MANAGEMENT LLC trimmed | 30,071 | $478K | 0.1% | 2026-Q2 |
| HSBC HOLDINGS PLC new | 29,912 | $475K | 0.1% | 2026-Q2 |
| Russell Investments Group, Ltd. added | 29,823 | $474K | 0.1% | 2026-Q2 |
| JPMORGAN CHASE & CO trimmed | 25,473 | $441K | 0.1% | 2026-Q2 |
| MANUFACTURERS LIFE INSURANCE COMPANY, THE trimmed | 23,585 | $375K | 0.1% | 2026-Q2 |
| MetLife Investment Management, LLC trimmed | 23,060 | $367K | 0.1% | 2026-Q2 |
| Magnetar Financial LLC new | 20,488 | $326K | 0.1% | 2026-Q2 |
| Arax Advisory Partners added | 19,987 | $318K | 0.1% | 2026-Q2 |
| NEUBERGER BERMAN GROUP LLC added | 19,951 | $317K | 0.1% | 2026-Q2 |
| Vanguard Global Advisers, LLC | 19,531 | $311K | 0.1% | 2026-Q2 |
| LPL Financial LLC trimmed | 19,108 | $304K | 0.1% | 2026-Q2 |
| RAYMOND JAMES FINANCIAL INC added | 18,942 | $301K | 0.1% | 2026-Q2 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. trimmed | 18,502 | $294K | 0.1% | 2026-Q2 |
| VANGUARD GROUP INC added | 2,668,010 | $39M | 7.8% | 2025-Q4 stale (2 quarters behind) |
| WELLINGTON MANAGEMENT GROUP LLP added | 1,363,896 | $18M | 3.6% | 2025-Q2 stale (4 quarters behind) |
| GW&K Investment Management, LLC trimmed | 1,133,087 | $17M | 3.4% | 2026-Q1 stale (1 quarter behind) |
| Philosophy Capital Management LLC trimmed | 582,001 | $9M | 1.7% | 2026-Q1 stale (1 quarter behind) |
| Philadelphia Financial Management of San Francisco, LLC trimmed | 545,321 | $8M | 1.6% | 2026-Q1 stale (1 quarter behind) |
| Stieven Capital Advisors, L.P. trimmed | 438,635 | $6M | 1.3% | 2026-Q1 stale (1 quarter behind) |
| MENDON CAPITAL ADVISORS CORP trimmed | 347,614 | $5M | 1.0% | 2026-Q1 stale (1 quarter behind) |
| Acuitas Investments, LLC | 383,299 | $5M | 1.0% | 2025-Q3 stale (3 quarters behind) |
| Capital Planning Advisors, LLC | 343,313 | $5M | 1.0% | 2026-Q1 stale (1 quarter behind) |
| Curi Capital, LLC trimmed | 318,769 | $5M | 0.9% | 2026-Q1 stale (1 quarter behind) |
| Gator Capital Management, LLC added | 254,501 | $4M | 0.8% | 2026-Q1 stale (1 quarter behind) |
| Lighthouse Investment Partners, LLC added | 259,861 | $3M | 0.7% | 2025-Q3 stale (3 quarters behind) |
| HOTCHKIS & WILEY CAPITAL MANAGEMENT LLC | 222,657 | $3M | 0.7% | 2025-Q4 stale (2 quarters behind) |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP trimmed | 113,538 | $2M | 0.3% | 2025-Q4 stale (2 quarters behind) |
| AMERICAN CENTURY COMPANIES INC trimmed | 85,033 | $1M | 0.2% | 2025-Q3 stale (3 quarters behind) |
| Neo Ivy Capital Management new | 66,949 | $979K | 0.2% | 2025-Q4 stale (2 quarters behind) |
| D. E. Shaw & Co., Inc. trimmed | 50,272 | $735K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| XTX Topco Ltd added | 48,329 | $707K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| JANE STREET GROUP, LLC added | 51,058 | $680K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| Precision Wealth Strategies, LLC new | 45,018 | $659K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Aquatic Capital Management LLC added | 41,477 | $612K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| OCCUDO QUANTITATIVE STRATEGIES LP added | 41,121 | $607K | 0.1% | 2026-Q1 stale (1 quarter behind) |
| AMERIPRISE FINANCIAL INC trimmed | 26,605 | $389K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| Cubist Systematic Strategies, LLC added | 25,690 | $342K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| VICTORY CAPITAL MANAGEMENT INC new | 24,195 | $322K | 0.1% | 2025-Q3 stale (3 quarters behind) |
| ARMISTICE CAPITAL, LLC new | 20,606 | $301K | 0.1% | 2025-Q4 stale (2 quarters behind) |
| DARK FOREST CAPITAL MANAGEMENT LP new | 19,054 | $281K | 0.1% | 2026-Q1 stale (1 quarter behind) |
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.