SeaBridge Investment Advisors LLC
Long book
$591.1M
Q1 2026
Positions
188
Top-10 weight
31%
concentration
Last quarter
+12.8%
SPY +14.8%
Turnover
18%
of book per quarter
Strategy in plain words
auto-generated from filingsSeaBridge Investment Advisors LLC is an institutional manager, running a $591.1M US long book across 188 positions.
The portfolio is moderately concentrated (top 10 ≈ 31% of the book). Turnover is modest: positions are typically held for years. Current anchor positions: APPLE INC, TAIWAN SEMICONDUCTOR-SP ADR, VANGUARD MORTGAGE-BACKED SEC, ISHARES 7-10 YEAR TREASURY B, JANUS HENDERSON MORTG BACKED.
Over the last 9 quarters its long book ran on average 0.5pp per quarter behind the S&P 500, beating the index in 3 of 9 quarters. Signal value of individual moves is limited — treat changes as weak evidence.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+1.2%
Q2 2024
+6.2%
Q3 2024
+0.9%
Q4 2024
-2.6%
Q1 2025
+9.3%
Q2 2025
+7.4%
Q3 2025
+1.9%
Q4 2025
-1.3%
Q1 2026
+12.8%
Sector allocation
Technology 32%
Financials 14%
Industrials 13%
Consumer discretionary 12%
Healthcare 7%
Materials 5%
Other 5%
Energy 4%
Long book by quarter
What does SeaBridge Investment own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| AAPL APPLE INC | Technology | 86.7K | $22.0M | 3.7% | +7.2% |
| GOOGL ALPHABET INC-CL A | Technology | 64.3K | $18.5M | 3.1% | +9.6% |
| MSFT MICROSOFT CORP | Technology | 42.1K | $15.6M | 2.6% | +11.1% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 28.1K | $13.5M | 2.3% | +13.4% |
| META META PLATFORMS INC-CLASS A | Technology | 20.7K | $11.8M | 2.0% | +17.7% |
| GOOG ALPHABET INC-CL C | Technology | 33.9K | $9.7M | 1.6% | -5.1% |
| WPM WHEATON PRECIOUS METALS CORP | Materials | 72.1K | $9.4M | 1.6% | -4.2% |
| JPM JPMORGAN CHASE & CO | Financials | 32.1K | $9.4M | 1.6% | +12.5% |
| STXN SEAGATE TECHNOLOGY HOLDINGS | — | 21.7K | $8.5M | 1.4% | -11.9% |
| AMGN AMGEN INC | Healthcare | 23.7K | $8.3M | 1.4% | +19.9% |
| SPOT SPOTIFY TECHNOLOGY SA | Communications | 16.7K | $8.1M | 1.4% | +7.3% |
| AMZN AMAZON.COM INC | Consumer discretionary | 37.4K | $7.8M | 1.3% | -3.8% |
| AVGO BROADCOM INC | Technology | 23.8K | $7.4M | 1.2% | -13.3% |
| ASML ASML HOLDING NV-NY REG SHS | Industrials | 5.5K | $7.3M | 1.2% | -0.2% |
| NFLX NETFLIX INC | Services media | 70.4K | $6.8M | 1.1% | +36.5% |
| PWR QUANTA SERVICES INC | Industrials | 12.3K | $6.8M | 1.1% | +23.9% |
| MU MICRON TECHNOLOGY INC | Technology | 19.7K | $6.6M | 1.1% | +22.6% |
| FERG FERGUSON ENTERPRISES INC | Consumer discretionary | 27.1K | $6.3M | 1.1% | +16.9% |
| WCC WESCO INTERNATIONAL INC | Consumer discretionary | 22.0K | $6.0M | 1.0% | +20.3% |
| RTX RTX CORP | Industrials | 31.1K | $6.0M | 1.0% | +22.5% |
| AMD ADVANCED MICRO DEVICES | Technology | 27.3K | $5.5M | 0.9% | +22.9% |
| WMT WALMART INC | Consumer discretionary | 44.4K | $5.5M | 0.9% | +18.0% |
| TEL TE CONNECTIVITY PLC | Consumer discretionary | 26.1K | $5.5M | 0.9% | +12.5% |
| NTRA NATERA INC | Healthcare | 26.4K | $5.3M | 0.9% | +21.1% |
| EQT EQT CORP | Energy | 79.8K | $5.1M | 0.9% | +27.4% |
| NVDA NVIDIA CORP | Technology | 26.6K | $4.6M | 0.8% | +3.0% |
| LOW LOWE'S COS INC | Consumer discretionary | 19.0K | $4.5M | 0.8% | +21.7% |
| SYK STRYKER CORP | Healthcare | 13.2K | $4.3M | 0.7% | +67.5% |
| AR ANTERO RESOURCES CORP | Energy | 99.9K | $4.2M | 0.7% | +37.3% |
| GS GOLDMAN SACHS GROUP INC | Financials | 4.8K | $4.1M | 0.7% | +566.8% |
| PGR PROGRESSIVE CORP | Financials | 20.4K | $4.0M | 0.7% | New |
| HD HOME DEPOT INC | Consumer discretionary | 12.0K | $4.0M | 0.7% | -2.1% |
| SARO STANDARDAERO INC | Industrials | 151.8K | $3.9M | 0.7% | +161.6% |
| CNX CNX RESOURCES CORP | Energy | 101.1K | $3.9M | 0.7% | +33.9% |
| NVR NVR INC | Industrials | 577 | $3.8M | 0.6% | +36.7% |
| ICE INTERCONTINENTAL EXCHANGE IN | Financials | 24.2K | $3.8M | 0.6% | -25.4% |
| BAC BANK OF AMERICA CORP | Financials | 77.4K | $3.8M | 0.6% | -0.8% |
| CCJ CAMECO CORP | Materials | 33.3K | $3.6M | 0.6% | New |
| MTD METTLER-TOLEDO INTERNATIONAL | Healthcare | 2.8K | $3.5M | 0.6% | +60.3% |
| MA MASTERCARD INC - A | Services media | 6.7K | $3.4M | 0.6% | -0.5% |
| BKNG BOOKING HOLDINGS INC | Industrials | 786 | $3.3M | 0.6% | +12.9% |
| TMO THERMO FISHER SCIENTIFIC INC | Other | 5.8K | $2.9M | 0.5% | -44.4% |
| ITT ITT INC | Industrials | 15.1K | $2.9M | 0.5% | -0.1% |
| ICLR ICON PLC | Healthcare | 25.9K | $2.9M | 0.5% | +16.4% |
| SNDK SANDISK CORP | Technology | 4.4K | $2.8M | 0.5% | -26.9% |
| AM ANTERO MIDSTREAM CORP | Utilities | 120.9K | $2.8M | 0.5% | -3.6% |
| MS MORGAN STANLEY | Financials | 15.0K | $2.5M | 0.4% | New |
| HUBB HUBBELL INC | Technology | 5.0K | $2.5M | 0.4% | Held |
| NVT NVENT ELECTRIC PLC | Industrials | 20.7K | $2.5M | 0.4% | -0.1% |
| COST COSTCO WHOLESALE CORP | Consumer discretionary | 2.4K | $2.4M | 0.4% | -0.4% |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | Apr 29, 2026 | 188 | $591.1M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 26, 2026 | 196 | $605.7M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Oct 22, 2025 | 203 | $616.2M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Jul 17, 2025 | 196 | $537.9M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 2, 2025 | 197 | $463.0M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 24, 2025 | 202 | $478.1M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 4, 2024 | 150 | $408.7M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Aug 1, 2024 | 149 | $385.6M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | Apr 30, 2024 | 144 | $379.3M | canonical | SEC ↗ |
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