Ken Griffin
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Ken Griffin’s Bank of Marin Bancorp BMRC Stock Holding History

Ken Griffin’s Portfolio BMRC Stock Details BMRC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q2 		– Sell
-1,600
Closed -$35.3K – 12629
2025
Q1 		$35.3K Buy
1,600
+1,300
+433% +$30.9K ﹤0.01% 12653
2024
Q4 		$7.13K Buy
300
+100
+50% +$2.36K ﹤0.01% 13753
2024
Q3 		$4.02K Sell
200
-4,500
-96% -$88.4K ﹤0.01% 13602
2024
Q2 		$76.1K Buy
4,700
+4,000
+571% +$61.5K ﹤0.01% 11268
2024
Q1 		$11.7K Sell
700
-2,900
-81% -$53K ﹤0.01% 13394
2023
Q4 		$79.3K Buy
3,600
+3,300
+1,100% +$63.3K ﹤0.01% 11235
2023
Q3 		$5.48K Buy
300
+100
+50% +$1.93K ﹤0.01% 13390
2023
Q2 		$3.53K Buy
+200
New +$3.63K ﹤0.01% 13684

Other funds holding BMRC

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AllianceBernstein
AllianceBernstein Nashville, Tennessee $302B AUM 26.44% 1-Year Est. Return
HAM
HoldCo Asset Management Fort Lauderdale, Florida $1.56B AUM 45.42% 1-Year Est. Return
Manulife (Manufacturers Life Insurance)
Manulife (Manufacturers Life Insurance) Canada, Ontario, Canada $128B AUM 35.83% 1-Year Est. Return
Ameriprise
Ameriprise Minneapolis, Minnesota $495B AUM 43.24% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
Two Sigma Investments
Two Sigma Investments New York $138B AUM 41.87% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

Ken Griffin's BMRC Position: Q2 2026 in Review

Ken Griffin increased its Bank of Marin Bancorp (BMRC) stake by 43% in Q2 2026, buying an estimated $2M and bringing the position to 255,290 shares worth $7.07M. The position accounts for ﹤0.01% of the portfolio, ranked #4140.

Ken Griffin first reported a position in BMRC in Q4 2019 and has held it in 26 quarters since. 132 funds tracked by Wall St. Rank hold BMRC as of Q2 2026.

  • Ken Griffin held 255,290 shares of Bank of Marin Bancorp worth $7.07M as of Q2 2026.
  • Ken Griffin bought 76,537 Bank of Marin Bancorp shares in Q2 2026, an estimated $2M.
  • Bank of Marin Bancorp made up ﹤0.01% of Ken Griffin's portfolio in Q2 2026, its #4140 holding.
  • Ken Griffin first reported a position in Bank of Marin Bancorp in Q4 2019 and has held it in 26 quarters since.
  • 132 funds tracked by Wall St. Rank held Bank of Marin Bancorp as of Q2 2026.

Based on Citadel Advisors's 13F filing for Q2 2026, filed 14 Aug 2026.