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Bank of Marin Bancorp

140 hedge funds and large institutions have $270M invested in Bank of Marin Bancorp in 2026 Q1 according to their latest regulatory filings, with 20 funds opening new positions, 43 increasing their positions, 47 reducing their positions, and 11 closing their positions.

New
Increased
Maintained
Reduced
Closed

333% more call options, than puts

Call options by funds: $13K | Put options by funds: $3K

82% more first-time investments, than exits

New positions opened: 20 | Existing positions closed: 11

5% more funds holding

Funds holding: 133140 (+7)

2.44% more ownership

Funds ownership: 62.9%65.34% (+2.4%)

3% more capital invested

Capital invested by funds: $263M → $270M (+$7.01M)

9% less repeat investments, than reductions

Existing positions increased: 43 | Existing positions reduced: 47

Holders
140
Holders Change
+7
Holders Change %
+5.26%
% of All Funds
1.72%
Holding in Top 10
Holding in Top 10 Change
Holding in Top 10 Change %
% of All Funds
New
20
Increased
43
Reduced
47
Closed
11
Calls
$13K
Puts
$3K
Net Calls
+$10K
Net Calls Change
+$10K
Name Holding Trade Value Shares
Change
Change in
Stake
BlackRock
1
BlackRock
New York
$35.9M -$500K -19,274 -1%
Dimensional Fund Advisors
2
Dimensional Fund Advisors
Texas
$20.6M +$831K +32,048 +4%
VCM
3
Vanguard Capital Management
Pennsylvania
$16.5M +$16.7M +642,672 New
AllianceBernstein
4
AllianceBernstein
Tennessee
$16.2M -$958K -36,916 -6%
Wellington Management Group
5
Wellington Management Group
Massachusetts
$16.2M -$7.54M -290,642 -32%
HAM
6
HoldCo Asset Management
Florida
$12.9M
Manulife (Manufacturers Life Insurance)
7
Manulife (Manufacturers Life Insurance)
Ontario, Canada
$11.8M +$227K +8,758 +2%
Geode Capital Management
8
Geode Capital Management
Massachusetts
$10M +$116K +4,474 +1%
Ameriprise
9
Ameriprise
Minnesota
$9.61M -$173K -6,672 -2%
State Street
10
State Street
Massachusetts
$8.71M +$83.2K +3,207 +1%
Two Sigma Investments
11
Two Sigma Investments
New York
$6.83M +$3.29M +126,910 +91%
Hotchkis & Wiley Capital Management
12
Hotchkis & Wiley Capital Management
California
$6.68M -$248K -9,570 -4%
HA
13
Heartland Advisors
Wisconsin
$6.41M +$1.31M +50,430 +25%
Morgan Stanley
14
Morgan Stanley
New York
$6.16M -$565K -21,765 -8%
UBS Group
15
UBS Group
Switzerland
$5.12M +$4.15M +159,853 +401%
Citadel Advisors
16
Citadel Advisors
Florida
$4.58M +$3.01M +115,915 +184%
Charles Schwab
17
Charles Schwab
California
$3.21M -$94.1K -3,628 -3%
Northern Trust
18
Northern Trust
Illinois
$3.21M +$204K +7,849 +7%
KCM
19
Kennedy Capital Management
Missouri
$3.16M +$57.9K +2,232 +2%
Renaissance Technologies
20
Renaissance Technologies
New York
$3.06M +$625K +24,100 +25%
AQR Capital Management
21
AQR Capital Management
Connecticut
$3.02M -$12.7K -488 -0.4%
WP
22
Westmount Partners
California
$2.96M +$24K +925 +0.8%
Acadian Asset Management
23
Acadian Asset Management
Massachusetts
$2.84M -$184K -7,108 -6%
VPM
24
Vanguard Portfolio Management
Pennsylvania
$2.83M +$2.87M +110,474 New
VFT
25
Vanguard Fiduciary Trust
Pennsylvania
$2.74M +$2.77M +106,797 New