Harbor Advisors LLC

Q3 2025 13F-HR Holdings

Location
West Palm Beach, FL
Holdings as of
9/30/2025
Date filed
11/12/2025
Form type
13F-HR
Num holdings
190
Total value ($000)
$648,374
Net value change ($000)
+37,327 (6.1%)
New positions
10
Sold out positions
10
Turnover %
1.0%
Sector allocation + QoQ delta (equities-only)
Prev filing: 8/13/2025 Next filing: 1/30/2026 SEC filing

Snapshot: Change Analysis

Compared to Q2 2025
Methodology: sector metrics are equities-only; instrument mix chart is ex-options; options exposure is shown separately. Why this matters.
Top Adds (Value $000, Stocks/ETFs)
GOOGL 10,405 37.9%
AAPL 7,340 24.1%
NVDA 5,146 18.1%
FTAI 2,954 45.1%
IBKR 2,504 24.2%
MU 2,137 35.7%
NBIS 1,577 103.6%
CVX 1,326 211.8%
GOOGL 1,323 37.3%
EVR 1,010 24.9%
Top Reduces (Value $000, Stocks/ETFs)
EQIX -3,092 -1.5%
CHTR -2,131 -32.7%
AHC -1,108 -100.0%
Enstar Group LTD -841 -100.0%
LBRDA -650 -35.4%
SPGI -554 -7.7%
IONS -415 -100.0%
BRO -410 -15.4%
SNNRF -389 -100.0%
IT -354 -35.0%
Instrument mix + QoQ Δ (ex-options)
How this table is calculated: SEC VALUE ($000) is used as reported. For derivatives (PUT/CALL/WARRANT/RIGHT), SEC value represents reported underlying exposure, not premium cash paid/received. Column % is bucket-based: non-options share is calculated inside non-option total, options share is calculated inside options total. Details.
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Instrument:
Issuer Name Ticker Sector Industry Class History Value ($000) % Shares Shares Δ Shares Δ% Value Δ ($000) Value Δ% Principal Option Type