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Harbor Advisors LLC

CIK:0001687156
Investment Adviser
$3B AUM
190 holdings
Lutherville, MD, United States
Founded:2010
33 employees
Latest filing:Jun 30, 2025

Harbor Investment Advisory, LLC is a boutique, independent wealth management firm headquartered in Lutherville, Maryland. Founded in 2010, the firm is dually registered with the SEC as both a broker-dealer and investment adviser. It provides investment portfolio management, wealth planning, and family office support services to ultra-high net worth and high net worth individuals, families, family offices, related entities, retirement plans, charitable organizations, and other business entities. Harbor emphasizes long-term client relationships, personalized service, and objective advice delivered by a dedicated team of seasoned professionals. Harbor Investment Advisory, LLC has a staff of approximately 33 employees and serves clients nationwide.

Investment Strategy

Harbor Investment Advisory employs a client-centric investment strategy that combines quantitative and qualitative analysis to construct customized portfolios based on each client's investment objectives, time horizon, liquidity needs, and risk tolerance. The firm’s philosophy centers on diversified asset allocation aimed at achieving consistent, risk-adjusted returns. Harbor works closely with clients to determine appropriate strategies and regularly utilizes external research, manager due diligence, and market analysis. The firm does not charge performance-based fees, and its investment recommendations are tailored, open-architecture, and frequently open to third-party portfolio managers to ensure the best possible alignment with client goals.

Latest 13F Filing Activity

Harbor Advisors LLC filed their most recent 13F report on Jun 30, 2025 disclosing 187 equity positions with a total 13F market value of $611M. The fund increased holdings in Nvidia Corporation, Amazon Com Inc., Alphabet Inc. among other positions. Harbor Advisors LLC reduced exposure to Equinix Inc., Apple Inc., Harborone Bancorp Inc. New among others.

Top Buys
N
NVDANVIDIA CORPORATION
+$8.9M
A
AMZNAMAZON COM INC
+$4.5M
G
GOOGLALPHABET INC
+$3.4M
M
MSFTMICROSOFT CORP
+$3.2M
I
IBKRINTERACTIVE BROKERS GROUP IN
+$2.6M
Top Sells
E
EQIXEQUINIX INC
-$4.8M
A
AAPLAPPLE INC
-$2.5M
H
HONEHARBORONE BANCORP INC NEW
-$719.4K
T
TMUST-MOBILE US INC
-$587.5K
F
FBMSFIRST BANCSHARES INC MISS
-$529.8K

Top Holdings

E
EQIXEQUINIX INC
+32.9%$201.1M
A
AMZNAMAZON COM INC
+5.6%$33.9M
A
AAPLAPPLE INC
+5.0%$30.4M
N
NVDANVIDIA CORPORATION
+4.7%$28.4M
G
GOOGLALPHABET INC
+4.5%$27.4M

Equity Positions (187)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
EQUINIX INC32.91%$201.1M252,790$358.02$795.47-$4.8M
AMAZON COM INC5.55%$33.9M154,700$41.74$219.39+$4.5M
APPLE INC4.98%$30.4M148,400$28.96$205.17-$2.5M
NVIDIA CORPORATION4.65%$28.4M180,000$8.75$157.99+$8.9M
ALPHABET INC4.49%$27.4M155,600$62.76$176.23+$3.4M

Industry Allocation

REAL ESTATE INVESTMENT TRUSTS
+31.3%
SERVICES-COMPUTER PROGRAMMING, DATA PROCESSING, ETC.
+8.9%
SEMICONDUCTORS & RELATED DEVICES
+6.8%
ELECTRONIC COMPUTERS
+5.9%
RETAIL-CATALOG & MAIL-ORDER HOUSES
+5.2%