SeaBridge Investment Advisors LLC — 13F Holdings & Portfolio
CIK 1304229 · latest 13F-HR filed 2026-07-17
SeaBridge Investment Advisors LLC manages $691.6M in 13F-reported U.S. long-equity assets across 188 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are TSM (4.39%), AAPL (3.73%), VMBS (3.38%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 15 new positions, exited 15, added to 101, and trimmed 48.
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.
SUMMIT, NJ 07901-2610
$691.6M
Long-equity book
188
Distinct positions
2026-06-30
Filed 2026-07-17
+15 / −15 / ↑101 / ↓48
vs 2026-03-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- MICRON TECHNOLOGY INC$16.1M +242.2%
- ADVANCED MICRO DEVICES INC$10.4M +187.6%
- TAIWAN SEMICONDUCTOR MANUFAC$8.9M +41.3%
- SEAGATE TECHNOLOGY HLDNGS PL$7.8M +91.8%
- ELI LILLY & CO$7.4M +3549.1%
Top Trims
- ISHARES TR-$5.6M -95.7%
- META PLATFORMS INC-$2.5M -21.0%
- ISHARES INC-$1.7M -16.5%
- NETFLIX INC.-$1.7M -24.6%
- WHEATON PRECIOUS METALS CORP-$1.2M -12.4%
New Positions
- POSTAL REALTY TRUST INC$1.8M
- SPACE EXPLORATION TECHN CORP$940.2K
- SPHERE ENTERTAINMENT CO$420.6K
- HEWLETT PACKARD ENTERPRISE C$360.9K
- NEBIUS GROUP N.V.$359.3K
Exited Positions
- VANECK ETF TRUST$3.0M
- ISHARES TR$786.8K
- SPDR SERIES TRUST$263.0K
- FIRST BANCORP INC ME$252.3K
- PROSHARES TR$241.4K
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 | TAIWAN SEMICONDUCTOR MANUFAC | TSM | 874039100 | $30.3M | 4.39% | 63,532 | SH |
| 2 | APPLE INC | AAPL | 037833100 | $25.8M | 3.73% | 89,073 | SH |
| 3 | VANGUARD SCOTTSDALE FDS | VMBS | 92206C771 | $23.4M | 3.38% | 499,622 | SH |
| 4 | MICRON TECHNOLOGY INC | MU | 595112103 | $22.7M | 3.29% | 19,686 | SH |
| 5 | ALPHABET INC | GOOGL | 02079K305 | $22.7M | 3.28% | 63,546 | SH |
| 6 | ISHARES TR | IEF | 464287440 | $22.1M | 3.20% | 233,761 | SH |
| 7 | JANUS DETROIT STR TR | JMBS | 47103U852 | $20.1M | 2.91% | 446,615 | SH |
| 8 | ISHARES TR | PFF | 464288687 | $19.9M | 2.88% | 654,287 | SH |
| 9 | SEAGATE TECHNOLOGY HLDNGS PL | STX | G7997R103 | $16.3M | 2.36% | 16,891 | SH |
| 10 | MICROSOFT CORP | MSFT | 594918104 | $16.1M | 2.33% | 43,132 | SH |
| 11 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $15.9M | 2.31% | 27,450 | SH |
| 12 | SPDR SERIES TRUST | SPTS | 78468R101 | $15.3M | 2.21% | 527,316 | SH |
| 13 | JANUS DETROIT STR TR | JAAA | 47103U845 | $14.6M | 2.11% | 288,801 | SH |
| 14 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $14.5M | 2.09% | 28,886 | SH |
| 15 | ALPHABET INC | GOOG | 02079K107 | $11.6M | 1.68% | 32,890 | SH |
| 16 | ASML HLDG NV | ASML | N07059210 | $11.2M | 1.62% | 5,639 | SH |
| 17 | JPMORGAN CHASE & CO | JPM | 46625H100 | $10.5M | 1.52% | 32,167 | SH |
| 18 | SANDISK CORP | SNDK | 80004C200 | $9.7M | 1.41% | 4,283 | SH |
| 19 | META PLATFORMS INC | META | 30303M102 | $9.4M | 1.35% | 16,609 | SH |
| 20 | AMAZON COM INC | AMZN | 023135106 | $9.2M | 1.33% | 38,681 | SH |
| 21 | BROADCOM INC | AVGO | 11135F101 | $9.2M | 1.33% | 24,303 | SH |
| 22 | DIMENSIONAL ETF TRUST | DFUS | 25434V401 | $8.8M | 1.27% | 107,387 | SH |
| 23 | AMGEN INC | AMGN | 031162100 | $8.6M | 1.25% | 23,819 | SH |
| 24 | ISHARES INC | RING | 46434G855 | $8.5M | 1.23% | 132,121 | SH |
| 25 | ISHARES TR | IGSB | 464288646 | $8.4M | 1.21% | 159,641 | SH |
| 26 | WHEATON PRECIOUS METALS CORP | WPM | 962879102 | $8.3M | 1.20% | 73,629 | SH |
| 27 | SPDR SERIES TRUST | EBND | 78464A391 | $8.2M | 1.19% | 393,524 | SH |
| 28 | SPDR SERIES TRUST | SPIP | 78464A656 | $8.1M | 1.18% | 316,529 | SH |
| 29 | WESCO INTL INC | WCC | 95082P105 | $7.8M | 1.12% | 22,461 | SH |
| 30 | ELI LILLY & CO | LLY | 532457108 | $7.6M | 1.10% | 6,352 | SH |
| 31 | SPOTIFY TECHNOLOGY S A | SPOT | L8681T102 | $7.6M | 1.10% | 16,587 | SH |
| 32 | NATERA INC | NTRA | 632307104 | $7.2M | 1.04% | 26,475 | SH |
| 33 | QUANTA SVCS INC | PWR | 74762E102 | $6.9M | 1.00% | 9,568 | SH |
| 34 | STANDARDAERO INC | SARO | 85423L103 | $6.8M | 0.98% | 225,832 | SH |
| 35 | FERGUSON ENTERPRISES INC | FERG | 31488V107 | $6.5M | 0.94% | 27,505 | SH |
| 36 | RTX CORPORATION | RTX | 75513E101 | $6.0M | 0.87% | 31,570 | SH |
| 37 | NVIDIA CORPORATION | NVDA | 67066G104 | $5.4M | 0.78% | 26,997 | SH |
| 38 | TE CONNECTIVITY PLC | TEL | G87052109 | $5.3M | 0.76% | 26,180 | SH |
| 39 | STATE STR SPDR S&P 500 ETF T | SPY | 78462F103 | $5.2M | 0.75% | 6,957 | SH |
| 40 | ISHARES TR | IVV | 464287200 | $5.2M | 0.75% | 6,931 | SH |
| 41 | NETFLIX INC. | NFLX | 64110L106 | $5.1M | 0.74% | 71,495 | SH |
| 42 | WALMART INC | WMT | 931142103 | $5.0M | 0.73% | 44,586 | SH |
| 43 | GOLDMAN SACHS GROUP INC | GS | 38141G104 | $5.0M | 0.72% | 4,929 | SH |
| 44 | HOME DEPOT INC | HD | 437076102 | $4.9M | 0.71% | 13,903 | SH |
| 45 | ICON PUB LTD CO | ICLR | G4705A100 | $4.7M | 0.68% | 26,986 | SH |
| 46 | PROGRESSIVE CORP | PGR | 743315103 | $4.4M | 0.63% | 20,046 | SH |
| 47 | EQT CORP | EQT | 26884L109 | $4.4M | 0.63% | 82,138 | SH |
| 48 | BANK OF AMER CORP | BAC | 060505104 | $4.3M | 0.62% | 75,119 | SH |
| 49 | LOWES COS INC | LOW | 548661107 | $4.2M | 0.61% | 19,155 | SH |
| 50 | STRYKER CORPORATION | SYK | 863667101 | $4.2M | 0.61% | 13,385 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-07-17 | $691.6M | 188 | 0001304229-26-000004 |
| 2026-03-31 | 2026-04-29 | $591.1M | 188 | 0001304229-26-000003 |
| 2025-12-31 | 2026-01-26 | $605.7M | 196 | 0001304229-26-000001 |