Bank of Marin — 13F Holdings & Portfolio
CIK 1801145 · latest 13F-HR filed 2026-08-13
Bank of Marin manages $143.4M in 13F-reported U.S. long-equity assets across 150 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are XLK (5.46%), MSFT (4.21%), GOOGL (3.22%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 9 new positions and exited 11; 66 existing positions rose in reported value and 41 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Long-equity book
Distinct positions
Filed 2026-08-13
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
4 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 31.2%Cumulative share of the portfolio held in the largest N positions.
| Name | Title / Status | Ownership | Type |
|---|
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- SELECT SECTOR SPDR TR$2.2M +38.7%
- ADVANCED MICRO DEVICES INC$1.9M +166.1%
- ALPHABET INC$740.6K +19.1%
- NVIDIA CORPORATION$658.8K +17.6%
- PALO ALTO NETWORKS INC$638.7K +112.5%
Top Trims
- APPLE INC-$2.3M -33.0%
- WORLD GOLD TR-$541.8K -60.5%
- ISHARES TR-$401.2K -27.7%
- COSTCO WHOLESALE CORPORATI-$342.1K -12.0%
- WISDOMTREE TR-$334.6K -36.6%
New Positions
- HONEYWELL INTL INC$406.8K
- HONEYWELL AEROSPACE INC$401.7K
- CROCS INC$369.6K
- MICRON TECHNOLOGY INC$341.7K
- CF INDUSTRIES HOLD$338.5K
Exited Positions
- HONEYWELL INTL INC$778.2K
- AIR PRODUCTS AND CHEMICALS I$456.6K
- INTUIT$421.1K
- MARKEL GROUP INC$296.7K
- WALMART INC$284.0K
Bank of Marin Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | SELECT SECTOR SPDR TR | XLK | 81369Y803 | $7.8M | 5.46% | 41,140 | SH |
| 2 | MICROSOFT CORP | MSFT | 594918104 | $6.0M | 4.21% | 16,181 | SH |
| 3 | ALPHABET INC | GOOGL | 02079K305 | $4.6M | 3.22% | 12,940 | SH |
| 4 | APPLE INC | AAPL | 037833100 | $4.6M | 3.21% | 15,913 | SH |
| 5 | NVIDIA CORPORATION | NVDA | 67066G104 | $4.4M | 3.07% | 22,006 | SH |
| 6 | VANGUARD INDEX FDS | VOO | 922908363 | $3.9M | 2.69% | 5,624 | SH |
| 7 | VANGUARD INDEX FDS | VO | 922908629 | $3.7M | 2.61% | 46,380 | SH |
| 8 | AMAZON COM INC | AMZN | 023135106 | $3.3M | 2.29% | 13,753 | SH |
| 9 | SELECT SECTOR SPDR TR | XLV | 81369Y209 | $3.2M | 2.20% | 19,872 | SH |
| 10 | SELECT SECTOR SPDR TR | XLY | 81369Y407 | $3.2M | 2.20% | 26,872 | SH |
| 11 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $3.1M | 2.13% | 5,266 | SH |
| 12 | BANK OF MARIN BANCORP | BMRC | 063425102 | $2.7M | 1.87% | 97,046 | SH |
| 13 | VANGUARD WORLD FD | VOX | 92204A884 | $2.6M | 1.79% | 13,934 | SH |
| 14 | COSTCO WHOLESALE CORPORATI | COST | 22160K105 | $2.5M | 1.74% | 2,670 | SH |
| 15 | SELECT SECTOR SPDR TR | XLI | 81369Y704 | $2.2M | 1.56% | 12,095 | SH |
| 16 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $2.2M | 1.51% | 4,342 | SH |
| 17 | INVESCO QQQ TR | QQQ | 46090E103 | $2.1M | 1.45% | 2,832 | SH |
| 18 | SCHWAB STRATEGIC TR | SCHO | 808524862 | $2.0M | 1.42% | 84,501 | SH |
| 19 | ISHARES TR | IVV | 464287200 | $1.9M | 1.32% | 2,537 | SH |
| 20 | SELECT SECTOR SPDR TR | XLF | 81369Y605 | $1.8M | 1.23% | 32,812 | SH |
| 21 | VANGUARD WORLD FD | VFH | 92204A405 | $1.7M | 1.22% | 13,249 | SH |
| 22 | ARISTA NETWORKS INC | ANET | 040413205 | $1.7M | 1.20% | 10,121 | SH |
| 23 | SELECT SECTOR SPDR TR | XLC | 81369Y852 | $1.7M | 1.19% | 15,867 | SH |
| 24 | DANAHER CORP DEL | DHR | 235851102 | $1.7M | 1.18% | 8,866 | SH |
| 25 | VISA INC | V | 92826C839 | $1.6M | 1.11% | 4,634 | SH |
| 26 | ELI LILLY & CO | LLY | 532457108 | $1.5M | 1.08% | 1,292 | SH |
| 27 | SELECT SECTOR SPDR TR | XLP | 81369Y308 | $1.5M | 1.05% | 18,116 | SH |
| 28 | ARM HOLDINGS PLC | ARM | 042068205 | $1.5M | 1.04% | 4,205 | SH |
| 29 | BANK OF AMER CORP | BAC | 060505104 | $1.3M | 0.92% | 23,063 | SH |
| 30 | VANGUARD INDEX FDS | VB | 922908751 | $1.3M | 0.91% | 4,300 | SH |
| 31 | JPMORGAN CHASE & CO | JPM | 46625H100 | $1.3M | 0.90% | 3,936 | SH |
| 32 | VANGUARD CHARLOTTE FDS | BNDX | 92203J407 | $1.2M | 0.86% | 25,335 | SH |
| 33 | PALO ALTO NETWORKS INC | PANW | 697435105 | $1.2M | 0.84% | 3,538 | SH |
| 34 | THERMO FISHER SCIENTIFIC I | TMO | 883556102 | $1.2M | 0.82% | 2,350 | SH |
| 35 | ISHARES TR | EFA | 464287465 | $1.1M | 0.77% | 10,678 | SH |
| 36 | ISHARES TR | TIP | 464287176 | $1.1M | 0.76% | 10,003 | SH |
| 37 | STATE STR SPDR S&P 500 ETF | SPY | 78462F103 | $1.1M | 0.76% | 1,460 | SH |
| 38 | VANGUARD INDEX FDS | VXF | 922908652 | $1.1M | 0.74% | 4,288 | SH |
| 39 | ISHARES TR | GOVT | 46429B267 | $1.0M | 0.73% | 45,891 | SH |
| 40 | VANGUARD TAX-MANAGED FDS | VEA | 921943858 | $1.0M | 0.71% | 14,254 | SH |
| 41 | SPDR SERIES TRUST | SPDG | 78468R465 | $1.0M | 0.70% | 21,608 | SH |
| 42 | STATE STR SPDR S&P 500 ETF | SPY | 78462F103 | $985.0K | 0.69% | 1,319 | SH |
| 43 | ISHARES TR | PFF | 464288687 | $951.7K | 0.66% | 31,214 | SH |
| 44 | GOLDMAN SACHS GROUP INC | GS | 38141G104 | $915.3K | 0.64% | 905 | SH |
| 45 | VANGUARD INDEX FDS | VTI | 922908769 | $884.0K | 0.62% | 2,389 | SH |
| 46 | VANGUARD BD INDEX FDS | BLV | 921937793 | $865.1K | 0.60% | 12,550 | SH |
| 47 | META PLATFORMS INC | META | 30303M102 | $839.9K | 0.59% | 1,491 | SH |
| 48 | HOME DEPOT INC | HD | 437076102 | $831.3K | 0.58% | 2,357 | SH |
| 49 | INVESCO QQQ TR | QQQ | 46090E103 | $829.2K | 0.58% | 1,126 | SH |
| 50 | STRYKER CORPORATION | SYK | 863667101 | $770.1K | 0.54% | 2,446 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-08-13 | $143.4M | 150 | 0001628280-26-056805 |
| 2026-03-31 | 2026-05-14 | $137.0M | 152 | 0001628280-26-034926 |
| 2025-12-31 | 2026-02-17 | $144.8M | 147 | 0001628280-26-008268 |
| 2025-09-30 | 2025-11-05 | $141.8M | 147 | 0001628280-25-049072 |
NOVATO, CA 94947