13F Insight
DOSSIER · 13F-HR · Q1 2026

SeaBridge Investment Advisors LLC

SeaBridge Investment's asset manager based in Boston, MA — $591M in tracked AUM across 188 positions as of Q1 2026.

SI
SeaBridge Investment·Boston, MA·Asset Manager
CIK 0001304229 · last filed Mar 31, 2026
Total AUM
$591M
▼ 6.2%
vs prior
Holdings
188
—
positions
Whale Score
54
54
tracked
Activity
—
no data
changes this Q
Top sector
Tech
6% weight
concentration
AI Analysis · Q1 2026 · Q1 2026

SeaBridge Investment Advisors LLC filed its latest 13F-HR for Q1 2026. See the latest holdings and position changes below.

Quarter at a glance — Q1 2026

Position-change comparison pending.

No quarter-over-quarter changes available.

Top 10 holdings

By portfolio weight as of Q1 2026.

#HoldingValueSharesWeight
01
AAPL
APPLE INC
$22M87K3.7%
02
TSM
TAIWAN SEMICONDUCTOR MANUFAC
$21M64K3.6%
03
VMBS
VANGUARD SCOTTSDALE FDS
$21M452K3.6%
04
IEF
ISHARES TR
$20M208K3.4%
05
JMBS
JANUS DETROIT STR TR
$19M418K3.2%
06
GOOGL
ALPHABET INC
$18M64K3.1%
07
PFF
ISHARES TR
$18M596K3.1%
08
MSFT
MICROSOFT CORP
$16M42K2.6%
09
SPTS
SPDR SERIES TRUST
$14M495K2.4%
10
BRK/B
BERKSHIRE HATHAWAY INC DEL
$13M28K2.3%

Filing history

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