SI
SeaBridge Investment Advisors LLC — 13F Portfolio Breakdown & Top Holdings (Q2 2026)
SeaBridge Investment Advisors LLCCIK: 0001304229
Diversified strategyMomentum followerQuality / disciplined sizing
Total reported value
$691.6M
Reporting period: 2026-06-30 · Number of holdings: 188
SeaBridge Investment Advisors LLC disclosed 188 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $691.6M and a quarterly turnover rate of 25.7%.
Browse other institutions with $100M to $1B AUMBrowse other institutions starting with "S"
Personality snowflake
- Concentration
- 6.82
- Portfolio Stability
- 25.69
- Momentum
- 100
- Sector conviction
- 65.44
- Diversification
- 100
- Sizing Uniformity
- 85.11
SeaBridge Investment Advisors LLC's disclosed holdings carry a Herfindahl concentration index of 0.017 — mathematically equivalent to about 59 equally-sized positions, well below its 188 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 1.49), with a handful of outsized bets alongside many smaller positions.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 66% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govAdd MU
+0.1% $16.1M
Add AMD
+0.7% $10.4M
Add LLY
+2698.2% $7.4M
Add SNDK
-2.2% $7.0M
Trim ITB
-96.2% -$5.6M
Add STX
-22.1% $7.8M
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | TSM | Taiwan Semiconductor-sp Adr | Stock-Tech | 4.39% | +0.76% | -0.02% | |
| 2 | AAPL | Apple Inc | Stock-Tech | 3.73% | +0.01% | +2.73% | |
| 3 | VMBS | Vanguard Mortgage-backed Sec | ETF-Other | 3.38% | -0.21% | +10.60% | |
| 4 | MU | Micron Technology Inc | Stock-Tech | 3.29% | +2.17% | +0.15% | |
| 5 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 3.28% | +0.15% | -1.21% | |
| 6 | IEF | Ishares 7-10 Year Treasury B | ETF-Gov Bonds | 3.20% | -0.16% | +12.36% | |
| 7 | JMBS | Janus Henderson Mortg Backed | ETF-Other | 2.91% | -0.29% | +6.85% | |
| 8 | PFF | Ishares Preferred & Income S | ETF-Other | 2.88% | -0.18% | +9.80% | |
| 9 | STX | Seagate Technology Holdings plc | Stock-Tech | 2.36% | +0.92% | -22.13% | |
| 10 | MSFT | Microsoft CORP | Stock-Tech | 2.33% | -0.31% | +2.46% | |
| 11 | AMD | Advanced Micro Devices | Stock-Tech | 2.31% | +1.37% | +0.72% | |
| 12 | SPTS | Ss Spdr P St Term Tsy ETF | ETF-Other | 2.21% | -0.23% | +6.50% | |
| 13 | JAAA | Janus Henderson Aaa Clo ETF | ETF-Other | 2.11% | +0.02% | +17.79% | |
| 14 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 2.09% | -0.19% | +2.91% | |
| 15 | GOOG | Alphabet Inc-cl C | Stock-Comm Services | 1.68% | +0.03% | -3.05% | |
| 16 | ASML | ASML Holding N.V. | Stock-Tech | 1.62% | +0.39% | +2.49% | |
| 17 | JPM | Jpmorgan Chase & Co | Stock-Financials | 1.52% | -0.08% | +0.29% | |
| 18 | SNDK | Sandisk CORP | Stock-Tech | 1.41% | +0.94% | -2.19% | |
| 19 | META | Meta Platforms Inc-class A | Stock-Comm Services | 1.35% | -0.65% | -19.72% | |
| 20 | AMZN | Amazon.com Inc | Stock-Consumer Disc | 1.33% | +0.01% | +3.30% | |
| 21 | AVGO | Broadcom Inc | Stock-Tech | 1.33% | +0.08% | +1.98% | |
| 22 | DFUS | Dimensional US Eq Mkt ETF | ETF-Other | 1.27% | -0.05% | -2.65% | |
| 23 | AMGN | Amgen Inc | Stock-Healthcare | 1.25% | -0.16% | +0.63% | |
| 24 | RING | Ishares Msci Global Gold Min | ETF-Commodities | 1.23% | -0.50% | +2.09% | |
| 25 | IGSB | Ishares 1-5y Inv Grade CORP | ETF-Other | 1.21% | -0.05% | +12.87% | |
| 26 | WPM | Wheaton Precious Metals CORP | Stock-Materials | 1.20% | -0.40% | +2.18% | |
| 27 | EBND | State Street Spdr Bloomberg | ETF-Other | 1.19% | -0.08% | +8.11% | |
| 28 | SPIP | Ss Spdr P Tips ETF | ETF-Other | 1.18% | -0.08% | +10.75% | |
| 29 | WCC | Wesco International Inc | Stock-Industrials | 1.12% | +0.10% | +1.92% | |
| 30 | LLY | Eli Lilly & Co | Stock-Healthcare | 1.10% | +1.06% | +2698.24% | |
| 31 | SPOT | Spotify Technology S.A. | Stock-Comm Services | 1.10% | -0.27% | -0.48% | |
| 32 | NTRA | Natera Inc | Stock-Healthcare | 1.04% | +0.15% | +0.34% | |
| 33 | PWR | Quanta Services Inc | Stock-Industrials | 1.00% | -0.14% | -22.27% | |
| 34 | SARO | Standardaero Inc | Stock-Other | 0.98% | +0.32% | +48.73% | |
| 35 | FERG | Ferguson Enterprises Inc | Stock-Industrials | 0.94% | -0.13% | +1.46% | |
| 36 | RTX | Rtx CORP | Stock-Industrials | 0.87% | -0.15% | +1.41% | |
| 37 | NVDA | Nvidia CORP | Stock-Tech | 0.78% | — | +1.67% | |
| 38 | TEL | TE Connectivity plc | Stock-Tech | 0.76% | -0.16% | +0.33% | |
| 39 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 0.75% | — | +2.25% | |
| 40 | IVV | Ishares Core S&p 500 ETF | ETF-Large Cap & Growth | 0.75% | -0.03% | -2.06% | |
| 41 | NFLX | Netflix Inc | Stock-Comm Services | 0.74% | -0.40% | +1.59% | |
| 42 | WMT | Walmart Inc | Stock-Consumer Staples | 0.73% | -0.20% | +0.32% | |
| 43 | GS | Goldman Sachs Group Inc | Stock-Financials | 0.72% | +0.03% | +2.24% | |
| 44 | HD | Home Depot Inc | Stock-Consumer Disc | 0.71% | +0.04% | +15.73% | |
| 45 | ICLR | ICON Public Limited Company | Stock-Healthcare | 0.68% | +0.20% | +4.18% | |
| 46 | PGR | Progressive CORP | Stock-Financials | 0.63% | -0.05% | -1.55% | |
| 47 | EQT | Eqt CORP | Stock-Energy | 0.63% | -0.23% | +2.87% | |
| 48 | BAC | Bank Of America CORP | Stock-Financials | 0.62% | -0.02% | -2.96% | |
| 49 | LOW | Lowe's Cos Inc | Stock-Consumer Disc | 0.61% | -0.15% | +0.65% | |
| 50 | SYK | Stryker CORP | Stock-Healthcare | 0.61% | -0.12% | +1.28% |
1–50 of 188
Portfolio Performance
Performance for Q3 2026
+1.4%
Performance Last 4 Quarters
+23.1%
- Stdev
- +12.3%
- Beta
- +0.9
- Alpha
- +0.7%
- Max Drawdown
- -6.8%
- Annualized Perf
- +19.6%
- Batting Avg vs S&P
- +47.2%
- Sortino
- +3.06
- Stutzer
- +0.44
- Treynor
- +0.21
- Sterling
- +1.26
- Calmar
- +2.86
- Information Ratio
- -0.32
- Tracking Error
- +3.9%
- Stdev Down
- +6.1%
- Winning Months %
- +69.4%
- Losing Months %
- +30.6%
- Best 12 Months
- +33%
- Worst 12 Months
- +5.1%
- Efficiency Ratio
- +0.61
- Sharpe
- +1.53
- Stdev Sectors
- +10.8%
- Skewness
- -0.12
- Kurtosis
- -0.22
- Upside Potential
- +4.69
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 188 | $691.6M | 26 | ||
| 2026 Q1 | 188 | $591.1M | 27 | ||
| 2025 Q4 | 196 | $605.7M | 18 | ||
| 2025 Q3 | 203 | $616.2M | 53 | ||
| 2025 Q2 | 196 | $537.9M | 0 | ||
| 2025 Q1 | 197 | $463.0M | 100 | ||
| 2024 Q4 | 202 | $478.1M | 0 | ||
| 2024 Q3 | 150 | $408.7M | 0 | ||
| 2024 Q2 | 149 | $385.6M | 0 | ||
| 2024 Q1 | 144 | $379.3M | 0 | ||
| 2023 Q4 | 150 | $343.7M | 0 | ||
| 2023 Q3 | 133 | $303.5M | 0 | ||
| 2023 Q2 | 123 | $304.2M | 0 | ||
| 2023 Q1 | 123 | $286.1M | 0 | ||
| 2022 Q4 | 124 | $280.5M | 0 | ||
| 2022 Q3 | 130 | $286.7M | 0 | ||
| 2022 Q2 | 141 | $311.2M | 0 | ||
| 2022 Q1 | 140 | $335.0M | 0 | ||
| 2021 Q4 | 136 | $312.4M | 0 | ||
| 2021 Q3 | 130 | $304.5M | 0 | ||
| 2021 Q2 | 130 | $310.3M | 99 | ||
| 2021 Q1 | 129 | $302.6M | 22 | ||
| 2020 Q4 | 131 | $277.2M | 22 | ||
| 2020 Q3 | 252 | $268.9M | 14 | ||
| 2020 Q2 | 253 | $257.1M | 25 | ||
| 2020 Q1 | 254 | $218.1M | 36 | ||
| 2019 Q4 | 251 | $288.2M | 15 | ||
| 2019 Q3 | 264 | $292.9M | 17 | ||
| 2019 Q2 | 259 | $301.0M | 11 | ||
| 2019 Q1 | 254 | $299.1M | 18 | ||
| 2018 Q4 | 246 | $275.4M | 42 | ||
| 2018 Q3 | 243 | $390.6M | 13 | ||
| 2018 Q2 | 252 | $405.6M | 26 | ||
| 2018 Q1 | 251 | $445.3M | 17 | ||
| 2017 Q4 | 254 | $460.0M | 20 | ||
| 2017 Q3 | 257 | $428.3M | 13 | ||
| 2017 Q2 | 265 | $415.9M | 13 | ||
| 2017 Q1 | 260 | $416.5M | 20 | ||
| 2016 Q4 | 249 | $416.1M | 32 | ||
| 2016 Q3 | 258 | $404.0M | 26 | ||
| 2016 Q2 | 264 | $395.5M | 24 | ||
| 2016 Q1 | 236 | $411.0M | 38 | ||
| 2015 Q4 | 229 | $449.7M | 26 | ||
| 2015 Q3 | 230 | $430.1M | 43 | ||
| 2015 Q2 | 223 | $489.0M | 22 | ||
| 2015 Q1 | 228 | $496.7M | 26 | ||
| 2014 Q4 | 233 | $488.4M | 37 | ||
| 2014 Q3 | 212 | $430.1M | 23 | ||
| 2014 Q2 | 235 | $491.9M | 29 | ||
| 2014 Q1 | 210 | $447.7M | 26 | ||
| 2013 Q4 | 216 | $451.6M | 23 | ||
| 2013 Q3 | 217 | $411.9M | 22 | ||
| 2013 Q2 | 227 | $378.7M | 0 |
Holding changes this quarter
SeaBridge Investment Advisors LLC's most significant position changes for 2026-06-30: Sold out: Vaneck Junior Gold Miners (GDXJ); New buy: Postal Realty Trust Inc- A (PSTL); New buy: ; Sold out: Ishares Msci Eafe ETF (EFA); New buy: Sphere Entertainment Co (SPHR).
Showing top 200 changes by size (of 203 total)
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | MU | Micron Technology Inc | +2.2% | +0.15% | Add |
| 2 | AMD | Advanced Micro Devices | +1.4% | +0.72% | Add |
| 3 | LLY | Eli Lilly & Co | +1.1% | +2698.24% | Add |
| 4 | SNDK | Sandisk CORP | +0.9% | -2.19% | Trim |
| 5 | STX | Seagate Technology Holdings plc | +0.9% | -22.13% | Trim |
| 6 | TSM | Taiwan Semiconductor-sp Adr | +0.8% | -0.02% | Trim |
| 7 | ASML | ASML Holding N.V. | +0.4% | +2.49% | Add |
| 8 | SARO | Standardaero Inc | +0.3% | +48.73% | Add |
| 9 | INTC | Intel CORP | +0.3% | +13.55% | Add |
| 10 | ALAB | Astera Labs Inc | +0.3% | -4.21% | Trim |
| 11 | PSTL | Postal Realty Trust Inc- A | +0.3% | NEW | New buy |
| 12 | ICLR | ICON Public Limited Company | +0.2% | +4.18% | Add |
| 13 | MS | Morgan Stanley | +0.2% | +28.67% | Add |
| 14 | GOOGL | Alphabet Inc-cl A | +0.2% | -1.21% | Trim |
| 15 | NTRA | Natera Inc | +0.2% | +0.34% | Add |
| 16 | ✓ | +0.1% | NEW | New buy | |
| 17 | WCC | Wesco International Inc | +0.1% | +1.92% | Add |
| 18 | TXN | Texas Instruments Inc | +0.1% | +9.20% | Add |
| 19 | BE | Bloom Energy Corp- A | +0.1% | -19.35% | Trim |
| 20 | NVT | nVent Electric plc | +0.1% | — | Unchanged |
| 21 | KLAC | Kla CORP | +0.1% | +908.71% | Add |
| 22 | AVGO | Broadcom Inc | +0.1% | +1.98% | Add |
| 23 | EWY | Ishares Msci South Korea ETF | +0.1% | +0.94% | Add |
| 24 | SMH | Vaneck Semiconductor ETF | +0.1% | -5.11% | Trim |
| 25 | IWM | Ishares Russell 2000 ETF | +0.1% | +57.75% | Add |
| 26 | SPHR | Sphere Entertainment Co | +0.1% | NEW | New buy |
| 27 | CAT | Caterpillar Inc | +0.1% | — | Unchanged |
| 28 | CRWD | Crowdstrike Holdings Inc - A | +0.1% | — | Unchanged |
| 29 | HPE | Hewlett Packard Enterprise | +0.1% | NEW | New buy |
| 30 | NBIS | Nebius Group N.V. | +0.1% | NEW | New buy |
| 31 | MRVL | Marvell Technology Inc | +0.1% | NEW | New buy |
| 32 | PG | Procter & Gamble Co/the | +0.1% | NEW | New buy |
| 33 | HD | Home Depot Inc | 0% | +15.73% | Add |
| 34 | ETN | Eaton Corporation plc | 0% | +31.20% | Add |
| 35 | LRCX | Lam Research CORP | 0% | +1.55% | Add |
| 36 | NEE | Nextera Energy Inc | 0% | +97.42% | Add |
| 37 | LMT | Lockheed Martin CORP | 0% | NEW | New buy |
| 38 | EWJ | Ishares Msci Japan ETF | 0% | NEW | New buy |
| 39 | GOOG | Alphabet Inc-cl C | 0% | -3.05% | Trim |
| 40 | GS | Goldman Sachs Group Inc | 0% | +2.24% | Add |
| 41 | IBM | Intl Business Machines CORP | 0% | +13.68% | Add |
| 42 | VGT | Vanguard Info Tech ETF | 0% | +803.24% | Add |
| 43 | ADI | Analog Devices Inc | 0% | NEW | New buy |
| 44 | SYY | Sysco CORP | 0% | NEW | New buy |
| 45 | BNY | Bank Of New York Mellon CORP | 0% | NEW | New buy |
| 46 | IEMG | Ishares Core Msci Emerging | 0% | NEW | New buy |
| 47 | A | Agilent Technologies Inc | 0% | NEW | New buy |
| 48 | DIA | Ss Spdr Dow Jones Indus Avg | 0% | NEW | New buy |
| 49 | JAAA | Janus Henderson Aaa Clo ETF | 0% | +17.79% | Add |
| 50 | MOG-A | Moog Inc-class A | 0% | — | Unchanged |
1–50 of 200
Filing History
FAQ
What is SeaBridge Investment Advisors LLC and what type of investor is it?
SeaBridge Investment Advisors LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $691.6M, spread across 188 disclosed positions.
What are SeaBridge Investment Advisors LLC's largest equity positions?
Based on the latest 13F filing, SeaBridge Investment Advisors LLC's top holdings by market value are:
1. Taiwan Semiconductor-sp Adr (TSM) — $30.3M (4.4%)
2. Apple Inc (AAPL) — $25.8M (3.7%)
3. Vanguard Mortgage-backed Sec (VMBS) — $23.4M (3.4%)
4. Micron Technology Inc (MU) — $22.7M (3.3%)
5. Alphabet Inc-cl A (GOOGL) — $22.7M (3.3%)
What changes did SeaBridge Investment Advisors LLC make in its most recent portfolio filing?
In the latest reported quarter, SeaBridge Investment Advisors LLC made 162 notable position adjustments: 15 new positions were initiated, 76 existing holdings were added to, 56 positions were partially reduced, and 15 were completely exited. The largest of these moves: Sold out: Vaneck Junior Gold Miners (GDXJ); New buy: Postal Realty Trust Inc- A (PSTL); New buy: ; Sold out: Ishares Msci Eafe ETF (EFA); New buy: Sphere Entertainment Co (SPHR)
What sectors does SeaBridge Investment Advisors LLC focus on?
SeaBridge Investment Advisors LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 40.6%
• Communication Services: 12.6%
• Industrials: 10.6%
• Financials: 9.9%
• Health Care: 8.8%
• Consumer Discretionary: 7.0%
💡
Data Source Notice: AlphaSMO is the web's most authoritative 13F / Inside Trader database. Institutional holdings and insider trades presented here are precisely computed to deliver accurate portfolio reporting.
Investment Profile
SeaBridge Investment Advisors LLC returned an annualized 19.6% over the trailing 36 months — outperforming the S&P 500 by 0.7 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 0.90 (roughly in line with the market) and a 47% quarterly batting average against the index.
Its portfolio is broadly diversified and moderately active, with 40.6% of the portfolio concentrated in Information Technology.
Its turnover score has risen from 0 to 26 over the past 4 quarters — a shift toward more active trading.
It has added to its MU position over the past two quarters (+$18.1M, now $22.7M), while trimming RSP over the same stretch (-$12.9M, still holding $722.4K).
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Developer Access
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REST API
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npx alphasmo institutions get seabridge-investment-advisors-llc