BMRC Institutional Ownership & Shareholders
BANK OF MARIN BANCORP/CA (BMRC) is currently held by 143 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $303.87M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
Blackrock, Inc. is currently the largest disclosed institutional shareholder of BMRC tracked by InsiderSet, reporting ownership valued at approximately $44.33M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $45.40M, representing an estimated gain of +2.42% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 55% of the total disclosed BMRC value among the investors covered in this analysis. Major shareholders include Blackrock, Inc., Dimensional Fund Advisors Lp, Vanguard Capital Management Llc, and several other long-term asset managers with concentrated positions in BANK OF MARIN BANCORP/CA (BMRC).
This page ranks the largest institutional BMRC shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
143
Total Reported Value
$303.87M
Largest Holder
Blackrock, Inc.
Largest Position
$44.33M
Insider Transactions (90d)
3
Latest Filing Quarter
Q2 2026
New Institutional Positions
111
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Blackrock, Inc. | 0.00% | 1,600,224 | $44,326,197 | $45,398,355 | +$1,072,158 | +2.42% | |
| Dimensional Fund Advisors Lp | 0.00% | 680,239 | $18,842,554 | $19,298,380 | +$455,826 | +2.42% | |
| Vanguard Capital Management Llc | 0.00% | 657,941 | $18,224,966 | $18,665,786 | +$440,820 | +2.42% | |
| Alliancebernstein L.P. | 0.01% | 613,724 | $15,729,746 | $17,411,350 | +$1,681,604 | +10.69% | |
| Holdco Asset Management, Lp | 0.90% | 504,411 | $13,972,185 | $14,310,140 | +$337,955 | +2.42% | |
| Manufacturers Life Insurance Company, The | 0.01% | 456,401 | $12,642,308 | $12,948,096 | +$305,788 | +2.42% | |
| Ameriprise Financial Inc | 0.00% | 420,473 | $11,647,102 | $11,928,819 | +$281,717 | +2.42% | |
| Geode Capital Management, Llc | 0.00% | 413,173 | $11,447,602 | $11,721,718 | +$274,116 | +2.39% | |
| Two Sigma Investments, Lp | 0.01% | 361,575 | $10,015,627 | $10,257,883 | +$242,256 | +2.42% | |
| State Street Corp | 0.00% | 344,314 | $9,537,498 | $9,768,188 | +$230,690 | +2.42% | |
| Heartland Advisors Inc | 0.40% | 325,508 | $9,016,572 | $9,234,662 | +$218,090 | +2.42% | |
| Algebris (Uk) Ltd | 0.53% | 293,040 | $8,091,645 | $8,313,545 | +$221,900 | +2.74% | |
| Morgan Stanley | 0.00% | 271,960 | $7,533,295 | $7,715,505 | +$182,210 | +2.42% | |
| Hotchkis & Wiley Capital Management Llc | 0.02% | 264,196 | $7,318,229 | $7,495,241 | +$177,012 | +2.42% | |
| Citadel Advisors Llc | 0.00% | 255,290 | $7,071,533 | $7,242,577 | +$171,044 | +2.42% | |
| Qube Research & Technologies Ltd | 0.01% | 183,331 | $5,078,269 | $5,201,100 | +$122,831 | +2.42% | |
| Aqr Capital Management Llc | 0.00% | 168,484 | $4,667,016 | $4,779,891 | +$112,875 | +2.42% | |
| Deprince Race & Zollo Inc | 0.07% | 154,689 | $4,188,978 | $4,388,527 | +$199,549 | +4.76% | |
| Charles Schwab Investment Management Inc | 0.00% | 137,428 | $3,806,756 | $3,898,832 | +$92,076 | +2.42% | |
| Northern Trust Corp | 0.00% | 134,145 | $3,715,817 | $3,805,694 | +$89,877 | +2.42% | |
| Renaissance Technologies LLC | Jim Simons | 0.01% | 132,381 | $3,666,954 | $3,755,649 | +$88,695 | +2.42% |
| Vanguard Portfolio Management Llc | 0.00% | 124,798 | $3,456,905 | $3,540,519 | +$83,614 | +2.42% | |
| Kennedy Capital Management Llc | 0.06% | 120,894 | $3,348,764 | $3,429,763 | +$80,999 | +2.42% | |
| Creative Planning | 0.00% | 119,788 | $3,243,868 | $3,398,386 | +$154,518 | +4.76% | |
| Westmount Partners, Llc | 0.70% | 115,484 | $3,198,907 | $3,276,281 | +$77,374 | +2.42% | |
| Vanguard Fiduciary Trust Co | 0.00% | 105,638 | $2,926,173 | $2,996,950 | +$70,777 | +2.42% | |
| Los Angeles Capital Management Llc | 0.01% | 99,891 | $2,766,981 | $2,833,908 | +$66,927 | +2.42% | |
| Bank Of Marin | 1.87% | 97,046 | $2,688,174 | $2,753,195 | +$65,021 | +2.42% | |
| Algert Global Llc | 0.03% | 92,918 | $2,573,829 | $2,636,084 | +$62,255 | +2.42% | |
| Quantinno Capital Management Lp | 0.00% | 90,470 | $2,506,041 | $2,566,634 | +$60,593 | +2.42% | |
| Goldman Sachs Group Inc | 0.00% | 90,029 | $2,493,815 | $2,554,123 | +$60,308 | +2.42% | |
| Bank Of New York Mellon Corp | 0.00% | 79,941 | $2,214,374 | $2,267,926 | +$53,552 | +2.42% | |
| Boothbay Fund Management, Llc | 0.04% | 79,090 | $2,190,793 | $2,243,783 | +$52,990 | +2.42% | |
| D. E. Shaw & Co., Inc. | 0.00% | 72,691 | $2,013,541 | $2,062,244 | +$48,703 | +2.42% | |
| Marshall Wace, Llp | 0.00% | 72,258 | $2,001,546 | $2,049,959 | +$48,413 | +2.42% | |
| Pmc Fig Opportunities Llc | 3.16% | 70,959 | $1,965,564 | $2,013,107 | +$47,543 | +2.42% | |
| Fisher Asset Management, Llc | 0.00% | 68,966 | $1,910,357 | $1,956,565 | +$46,208 | +2.42% | |
| Trexquant Investment Lp | 0.01% | 53,272 | $1,475,634 | $1,511,327 | +$35,693 | +2.42% | |
| Point72 Asset Management, L.P. | 0.00% | 40,302 | $1,116,365 | $1,143,368 | +$27,003 | +2.42% | |
| Connor, Clark & Lunn Investment Management Ltd. | 0.00% | 40,253 | $1,115,008 | $1,141,978 | +$26,970 | +2.42% | |
| American Century Companies Inc | 0.00% | 38,357 | $1,062,501 | $1,088,188 | +$25,687 | +2.42% | |
| Private Wealth Partners, Llc | 0.07% | 36,983 | $1,001,500 | $1,049,208 | +$47,708 | +4.76% | |
| United Capital Financial Advisors, Llc | 0.01% | 34,641 | $959,556 | $982,765 | +$23,209 | +2.42% | |
| Millennium Management Llc | 0.00% | 32,876 | $910,665 | $932,692 | +$22,027 | +2.42% | |
| Squarepoint Ops Llc | 0.00% | 32,763 | $907,535 | $929,486 | +$21,951 | +2.42% | |
| Nuveen, Llc | 0.00% | 30,324 | $839,975 | $860,292 | +$20,317 | +2.42% | |
| Rbf Capital, Llc | 0.03% | 30,000 | $831,000 | $851,100 | +$20,100 | +2.42% | |
| Barclays Plc | 0.00% | 26,963 | $746,875 | $764,940 | +$18,065 | +2.42% | |
| Acadian Asset Management Llc | 0.00% | 26,006 | $719,000 | $737,790 | +$18,790 | +2.61% | |
| Y-Intercept (Hong Kong) Ltd | 0.02% | 26,306 | $712,366 | $746,301 | +$33,935 | +4.76% |
Frequently asked questions about BMRC
Who are the largest institutional holders of BMRC?
The largest institutional holders of BMRC reported in the latest SEC Form 13F filings include Blackrock, Inc., Dimensional Fund Advisors Lp, Vanguard Capital Management Llc, Alliancebernstein L.P., and Holdco Asset Management, Lp. InsiderSet ranks institutional holders by their latest reported BMRC position.
What is BMRC institutional ownership?
This page tracks BMRC positions reported by institutional investment managers through SEC Form 13F. BANK OF MARIN BANCORP/CA (BMRC) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own BMRC?
InsiderSet currently tracks 143 institutional managers reporting BMRC holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of BMRC shareholders.
How much BMRC stock do institutions own?
Institutional investment managers disclosed approximately $303.87M in BMRC holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was BMRC institutional ownership last updated?
The latest BMRC institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional BMRC holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its BMRC position after the reporting date.
Are institutions buying or selling BMRC?
Institutional buying and selling can be analyzed by comparing BMRC positions across consecutive 13F reporting periods. InsiderSet's BMRC Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View BMRC ownership changes.
How has BMRC institutional ownership changed over time?
InsiderSet tracks BMRC institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.