SeaBridge Investment Advisors LLC
Registered adviserFiling Date
Global Rank
#3,254
/ 8,807
▼ 38
Top Industry
Semiconductors
18.9%
Period ended 4 months ago
Filed Jul 17, 2026 · 3mo
26 quarters · since Mar 2020
Regulatory profile
From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.
Holder type
Registered adviser
Form ADV roster, Oct 1, 2026
Regulatory AUM
$771,222,213
Main clients
Individuals and high net worth
(66% of AUM)
Private funds on Schedule D 7.B.(1)
As filed Sep 11, 2024; SEC's bulk Form ADV archive ends with 2024 filings.
No private funds listed.
Form ADV history
Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.
| Rosters | Regulatory AUM | Main clients |
|---|---|---|
| Apr 2026 to Oct 2026 | $771,222,213 | Individuals and high net worth (66%) |
| Apr 2025 to Mar 2026 | $610,404,483 | Individuals and high net worth (69%) |
| Apr 2024 to Mar 2025 | $434,437,239 | Individuals and high net worth (60%) |
| May 2023 to Mar 2024 | $374,626,969 | Individuals and high net worth (57%) |
| Apr 2023 | $374,626,969 | Individuals and high net worth (57%) |
| Apr 2022 to Mar 2023 | $421,505,588 | Individuals and high net worth (55%) |
3 earlier changes not shown.
Portfolio style
Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.
Style
Diversified active
Top 10 weight 38.1%, 45.3 effective positions, active share 61.4% against every 13F filer's combined book; it meets none of the index-like, systematic-like or concentrated tests
Turnover
Low turnover
27.7% over the last four quarters (under 30%)
Horizon
Long horizon
Value-weighted holding period 15.4 quarters (12+), a floor since 36.1% of the book was already held when coverage starts
Closest benchmark: every 13F filer's combined book, active share 61.4%; sector active share 14.5% against the combined 13F book's sector weights.
Over time 26 measured quarters
How the bands are measured
Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.
Clone Performance
Build a hypothetical price-return history from this filer's public 13F holdings.
View clone backtestPortfolio Concentration
188 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026Top Position
5.6%
−0.5 pts
Top 5
24.1%
−0.2 pts
Top 10
38.1%
−0.1 pts
HHI
221
Diversified+1
Portfolio Trend
26 quarters · across all stocks
Sector Breakdown
As of Jun 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 30.0% | $186,643,315 |
| Unclassified | 21.6% | $134,484,362 |
| Financial Services | 9.9% | $61,580,865 |
| Communication Services | 9.4% | $58,202,106 |
| Industrials | 9.2% | $57,308,061 |
| Healthcare | 6.5% | $40,601,664 |
| Consumer Cyclical | 5.2% | $32,052,632 |
| Energy | 3.4% | $21,435,052 |
| Basic Materials | 2.7% | $16,818,238 |
| Consumer Defensive | 1.5% | $9,425,436 |
| Real Estate | 0.3% | $2,125,943 |
| Utilities | 0.1% | $894,852 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased
25 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| SARO | StandardAero, Inc. | +73,994 | 225,832 | $6,754,635 | |
| PFF | iShares Preferred and Income Securities ETF | +58,390 | 654,287 | $0 | |
| VMBS | VANGUARD MORTGAGE-BACKED SECURITIES INDEX FUND | +47,865 | 499,622 | $23,387,305 | |
| JAAA | Janus Henderson AAA CLO ETF | +43,619 | 288,801 | $14,581,562 | |
| — | +32,197 | 527,316 | $15,297,437 | ||
| SPIP | State Street(R) SPDR(R) Portfolio TIPS ETF | +30,721 | 316,529 | $8,128,464 | |
| EBND | State Street(R) SPDR(R) Bloomberg Emerging Markets Local Bond ETF | +29,505 | 393,524 | $8,232,522 | |
| FLBR | Franklin FTSE Brazil ETF | +28,746 | 135,397 | $2,898,849 | |
| JMBS | Janus Henderson Mortgage-Backed Securities ETF | +28,614 | 446,615 | $20,093,208 | |
| IEF | iShares 7-10 Year Treasury Bond ETF | +25,720 | 233,761 | $0 | |
| BKNG | Booking Holdings Inc. | +19,287 | 20,073 | $3,577,811 | |
| IGSB | iShares 1-5 Year Investment Grade Corporate Bond ETF | +18,209 | 159,641 | $0 | |
| LLY | ELI LILLY & Co | +6,125 | 6,352 | $7,618,779 | |
| VGT | VANGUARD INFORMATION TECHNOLOGY INDEX FUND | +5,952 | 6,693 | $799,947 | |
| MS | Morgan Stanley | +4,299 | 19,296 | $4,033,635 | |
| KLAC | Kla Corp | +4,171 | 4,630 | $1,396,917 | |
| NEE | Nextera Energy Inc | +3,773 | 7,646 | $671,089 | |
| CNX | CNX Resources Corp | +2,978 | 104,081 | $3,531,468 | |
| RING | iShares MSCI Global Gold Miners ETF | +2,711 | 132,121 | $8,535,016 | |
| VGSH | VANGUARD SHORT-TERM TREASURY INDEX FUND | +2,710 | 19,558 | $1,138,275 | |
| INTC | Intel Corp | +2,689 | 22,537 | $3,146,841 | |
| AR | ANTERO RESOURCES Corp | +2,604 | 102,484 | $3,601,287 | |
| AAPL | Apple Inc. | +2,371 | 89,073 | $25,774,163 | |
| EQT | EQT Corp | +2,291 | 82,138 | $4,367,277 | |
| KO | Coca Cola Co | +2,040 | 8,706 | $707,536 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced
25 positions
| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| ITB | iShares U.S. Home Construction ETF | −61,706 | 2,414 | $0 | |
| UEC | Uranium Energy Corp | −60,363 | 70,974 | $756,582 | |
| RF | Regions Financial Corp | −7,694 | 54,647 | $1,650,339 | |
| SHY | iShares 1-3 Year Treasury Bond ETF | −6,495 | 10,699 | $0 | |
| STX | Seagate Technology Holdings plc | −4,800 | 16,891 | $16,299,815 | |
| META | Meta Platforms, Inc. | −4,079 | 16,609 | $9,355,683 | |
| DFUS | Dimensional U.S. Equity Market ETF | −2,921 | 107,387 | $8,799,290 | |
| PWR | Quanta Services, Inc. | −2,741 | 9,568 | $6,889,342 | |
| RSP | Victory Portfolios II | −2,570 | 3,395 | $722,354 | |
| AM | Antero Midstream Corp | −2,556 | 118,372 | $2,692,963 | |
| VWO | VANGUARD EMERGING MARKETS STOCK INDEX FUND | −2,511 | 7,608 | $454,121 | |
| XLK | State Street(R) Technology Select Sector SPDR(R) ETF | −2,483 | 8,720 | $1,661,334 | |
| VTI | VANGUARD TOTAL STOCK MARKET INDEX FUND | −2,420 | 5,582 | $2,065,563 | |
| TMO | Thermo Fisher Scientific Inc. | −2,353 | 3,493 | $1,751,250 | |
| BAC | Bank Of America Corp /De/ | −2,294 | 75,119 | $4,280,280 | |
| NP | Neptune Insurance Holdings Inc. | −2,281 | 22,475 | $707,962 | |
| RPM | Rpm International Inc/De/ | −1,920 | 18,184 | $2,021,151 | |
| ITA | iShares U.S. Aerospace & Defense ETF | −1,607 | 2,749 | $0 | |
| AIG | American International Group, Inc. | −1,547 | 15,825 | $1,179,437 | |
| BE | Bloom Energy Corp | −1,519 | 6,333 | $1,916,999 | |
| XLV | State Street(R) Health Care Select Sector SPDR(R) ETF | −1,475 | 4,256 | $675,256 | |
| LEN | Lennar Corp /New/ | −1,267 | 7,437 | $672,974 | |
| XLE | State Street(R) Energy Select Sector SPDR(R) ETF | −1,225 | 11,113 | $590,211 | |
| TPR | Tapestry, Inc. | −1,101 | 1,670 | $244,454 | |
| GOOG | Alphabet Inc. | −1,035 | 32,890 | $11,621,023 | |
| No positions match the current search. | |||||
New Positions
Positions the filer opened this quarter
15 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| PSTL | Postal Realty Trust, Inc. | 72,383 | $1,783,517 | |
| SPCX | Space Exploration Technologies Corp | 5,503 | $940,242 | |
| SPHR | Sphere Entertainment Co. | 2,431 | $420,635 | |
| HPE | Hewlett Packard Enterprise Co | 8,000 | $360,880 | |
| NBIS | Nebius Group N.V. | 1,301 | $359,297 | |
| MRVL | Marvell Technology, Inc. | 1,178 | $350,914 | |
| PG | PROCTER & GAMBLE Co | 2,151 | $315,422 | |
| LMT | Lockheed Martin Corp | 606 | $308,732 | |
| EWJ | iShares MSCI Japan ETF | 3,285 | $306,391 | |
| ADI | Analog Devices Inc | 605 | $240,287 | |
| SYY | Sysco Corp | 2,737 | $228,758 | |
| BNY | Bank of New York Mellon Corp | 1,510 | $218,361 | |
| A | Agilent Technologies, Inc. | 1,625 | $215,848 | |
| DIA | Spdr Dow Jones Industrial Average ETF Trust | 389 | $203,209 | |
| IEMG | iShares Trust | 2,610 | $0 | |
| No positions match the current search. | ||||
Sold Out
Positions the filer fully exited
15 positions
| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| GDXJ | VanEck Junior Gold Miners ETF | 25,317 | $3,039,052 | |
| KBE | State Street(R) SPDR(R) S&P(R) Bank ETF | 4,416 | $262,972 | |
| FNLC | First Bancorp, Inc /ME/ | 9,001 | $252,298 | |
| VCIT | VANGUARD INTERMEDIATE-TERM CORPORATE BOND INDEX FUND | 2,893 | $239,395 | |
| XLF | State Street Corp | 4,489 | $221,621 | |
| GDX | VanEck Gold Miners ETF | 2,311 | $212,080 | |
| TMUS | T-Mobile US, Inc. | 1,006 | $211,290 | |
| GLD | Spdr Gold Trust | 489 | $210,411 | |
| GFI | Gold Fields Ltd | 4,532 | $205,752 | |
| XHB | State Street(R) SPDR(R) S&P(R) Homebuilders ETF | 2,070 | $204,350 | |
| UBER | Uber Technologies, Inc | 2,800 | $201,404 | |
| HHH | Howard Hughes Holdings Inc. | 3,180 | $201,166 | |
| EFA | iShares MSCI EAFE ETF | 8,100 | $0 | |
| PSQ | ProShares Short QQQ | 7,500 | $0 | |
| ET | Energy Transfer LP | 11,061 | $0 | |
| No positions match the current search. | ||||
188 tracked positions ·
$621,572,526 total
· filing declares
188 positions · $691,587,903
· as of Jun 30, 2026
All sectors
Basic Materials
Communication Services
Consumer Cyclical
Consumer Defensive
Energy
Financial Services
Healthcare
Industrials
Real Estate
Technology
Utilities
Showing 1–50
of 188 positions by value
· page 1 of 4
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| TSM |
Taiwan Semiconductor Manufacturing Co Ltd
Technology
|
Reduced | 63,532 | $30,340,977 | 4.88% | |
| AAPL |
Apple Inc.
Technology
|
Added | 89,073 | $25,774,163 | 4.15% | |
| VMBS |
VANGUARD MORTGAGE-BACKED SECURITIES INDEX FUND
|
Added | 499,622 | $23,387,305 | 3.76% | |
| MU |
Micron Technology Inc
Technology
|
Added | 19,686 | $22,723,352 | 3.66% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
Reduced | 63,546 | $22,709,434 | 3.65% | |
| JMBS |
Janus Henderson Mortgage-Backed Securities ETF
|
Added | 446,615 | $20,093,208 | 3.23% | |
| STX |
Seagate Technology Holdings plc
Technology
|
Reduced | 16,891 | $16,299,815 | 2.62% | |
| MSFT |
Microsoft Corp
Technology
|
Added | 43,132 | $16,089,098 | 2.59% | |
| AMD |
Advanced Micro Devices Inc
Technology
|
Added | 27,450 | $15,945,979 | 2.57% | |
|
|
Added | 527,316 | $15,297,437 | 2.46% | ||
| JAAA |
Janus Henderson AAA CLO ETF
|
Added | 288,801 | $14,581,562 | 2.35% | |
| BRK-B |
Berkshire Hathaway Inc
Financial Services
|
Added | 28,886 | $14,454,265 | 2.33% | |
| GOOG |
Alphabet Inc.
Communication Services
|
Reduced | 32,890 | $11,621,023 | 1.87% | |
| ASML |
Asml Holding NV
Technology
|
Added | 5,639 | $11,218,451 | 1.80% | |
| JPM |
Jpmorgan Chase & Co
Financial Services
|
Added | 32,167 | $10,529,224 | 1.69% | |
| SNDK |
Sandisk Corp
Technology
|
Reduced | 4,283 | $9,738,385 | 1.57% | |
| META |
Meta Platforms, Inc.
Communication Services
|
Reduced | 16,609 | $9,355,683 | 1.51% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
Added | 38,681 | $9,219,229 | 1.48% | |
| AVGO |
Broadcom Inc.
Technology
|
Added | 24,303 | $9,180,458 | 1.48% | |
| DFUS |
Dimensional U.S. Equity Market ETF
|
Reduced | 107,387 | $8,799,290 | 1.42% | |
| AMGN |
Amgen Inc
Healthcare
|
Added | 23,819 | $8,625,336 | 1.39% | |
| RING |
iShares MSCI Global Gold Miners ETF
|
Added | 132,121 | $8,535,016 | 1.37% | |
| WPM |
Wheaton Precious Metals Corp.
Basic Materials
|
Added | 73,629 | $8,270,009 | 1.33% | |
| EBND |
State Street(R) SPDR(R) Bloomberg Emerging Markets Local Bond ETF
|
Added | 393,524 | $8,232,522 | 1.32% | |
| SPIP |
State Street(R) SPDR(R) Portfolio TIPS ETF
|
Added | 316,529 | $8,128,464 | 1.31% | |
| WCC |
Wesco International Inc
Industrials
|
Added | 22,461 | $7,758,703 | 1.25% | |
| LLY |
ELI LILLY & Co
Healthcare
|
Added | 6,352 | $7,618,779 | 1.23% | |
| SPOT |
Spotify Technology S.A.
Communication Services
|
Reduced | 16,587 | $7,615,589 | 1.23% | |
| NTRA |
Natera, Inc.
Healthcare
|
Added | 26,475 | $7,186,638 | 1.16% | |
| PWR |
Quanta Services, Inc.
Industrials
|
Reduced | 9,568 | $6,889,342 | 1.11% | |
| SARO |
StandardAero, Inc.
Industrials
|
Added | 225,832 | $6,754,635 | 1.09% | |
| FERG |
Ferguson Enterprises Inc. /DE/
Industrials
|
Added | 27,505 | $6,527,761 | 1.05% | |
| RTX |
RTX Corp
Industrials
|
Added | 31,570 | $5,989,776 | 0.96% | |
| NVDA |
Nvidia Corp
Technology
|
Added | 26,997 | $5,401,829 | 0.87% | |
| TEL |
TE Connectivity plc
Technology
|
Added | 26,180 | $5,278,149 | 0.85% | |
| SPY |
Spdr S&P 500 ETF Trust
|
Added | 6,957 | $5,195,278 | 0.84% | |
| NFLX |
Netflix Inc
Communication Services
|
Added | 71,495 | $5,104,743 | 0.82% | |
| WMT |
Walmart Inc.
Consumer Defensive
|
Added | 44,586 | $5,049,810 | 0.81% | |
| GS |
Goldman Sachs Group Inc
Financial Services
|
Added | 4,929 | $4,985,042 | 0.80% | |
| HD |
Home Depot, Inc.
Consumer Cyclical
|
Added | 13,903 | $4,903,310 | 0.79% | |
| ICLR |
Icon PLC
Healthcare
|
Added | 26,986 | $4,687,738 | 0.75% | |
| PGR |
Progressive Corp/Oh/
Financial Services
|
Reduced | 20,046 | $4,379,048 | 0.70% | |
| EQT |
EQT Corp
Energy
|
Added | 82,138 | $4,367,277 | 0.70% | |
| BAC |
Bank Of America Corp /De/
Financial Services
|
Reduced | 75,119 | $4,280,280 | 0.69% | |
| LOW |
Lowes Companies Inc
Consumer Cyclical
|
Added | 19,155 | $4,223,485 | 0.68% | |
| SYK |
Stryker Corp
Healthcare
|
Added | 13,385 | $4,214,133 | 0.68% | |
| NVR |
Nvr Inc
Consumer Cyclical
|
Added | 600 | $4,088,039 | 0.66% | |
| MS |
Morgan Stanley
Financial Services
|
Added | 19,296 | $4,033,635 | 0.65% | |
| BABA |
Alibaba Group Holding Ltd
Consumer Cyclical
|
Reduced | 38,081 | $3,655,014 | 0.59% | |
| AR |
ANTERO RESOURCES Corp
Energy
|
Added | 102,484 | $3,601,287 | 0.58% |
Showing the top 50 of 188 positions. Create a free account to see every position, past quarters, search, filters and CSV export.
Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.