HARBOR INVESTMENT ADVISORY, LLC

RIA/Wealth

HARBOR INVESTMENT ADVISORY, LLC is a RIA/Wealth based in Ann Arbor, MI led by Robert Wilmer Iii Black, reporting $6.0B in AUM as of Q3 2025 with MAR as the largest holding (12% allocation).

PresidentRobert Wilmer Iii Black

Portfolio Value: $1.2B
Positions: 1,159
Top Holding: MAR at 12.34%
Last Reported: Q3 2025

Address3400 Travis Pointe Rd., Suite E, Ann Arbor, MI, 48108, United States

Top Holdings

Largest long holdings in HARBOR INVESTMENT ADVISORY, LLC's portfolio (39.3% of total portfolio)

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Holding	Sector	Position	Weight	Traded	Ownership	Owned Since
1 Marriott International MAR	Travel Lodging Consumer Cyclical	$149.1M	12.34%	+$3.9M Bought	0.21% 572.4K shares	Q4 2019 Held for 5y 11m
2 Apple AAPL	Consumer Electronics Technology	$85.2M	7.05%	-$82.3K Sold	0.00% 351.8K shares	Q4 2019 Held for 5y 11m
3 Amazon AMZN	Specialty Retail Consumer Cyclical	$51.8M	4.29%	-$252.1K Sold	0.00% 302.4K shares	Q4 2019 Held for 5y 11m
4 Microsoft MSFT	Software - Infrastructure Technology	$48.4M	4.01%	+$368.2K Bought	0.00% 147.2K shares	Q4 2019 Held for 5y 11m
5 Alphabet Inc. GOOGL	Internet Content & Information Communication Services	$42.6M	3.52%	+$742.9K Bought	0.00% 175.1K shares	Q4 2019 Held for 5y 11m
6 Berkshire Hathaway BRK.B	Insurance - Diversified Financial Services	$33.4M	2.77%	+$558.4K Bought	0.01% 236.7K shares	Q4 2019 Held for 5y 11m
7 JPMorgan Chase JPM	Banks - Diversified Financial Services	$17.3M	1.43%	-$82.2K Sold	0.00% 68.6K shares	Q4 2019 Held for 5y 11m
8 Alphabet Inc. GOOG	Internet Content & Information Communication Services	$16.4M	1.35%	-$74.7K Sold	0.00% 75.8K shares	Q4 2019 Held for 5y 11m
9 Mastercard MA	Financial - Credit Services Financial Services	$15.4M	1.27%	-$44.9K Sold	0.00% 27.0K shares	Q4 2019 Held for 5y 11m
10 Nvidia NVDA	Semiconductors Technology	$15.1M	1.25%	+$1.2M Bought	0.00% 80.8K shares	Q4 2019 Held for 5y 11m

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Changes

Portfolio activity, position movements, and quarter-over-quarter changes in HARBOR INVESTMENT ADVISORY, LLC's latest filing

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Market Value

$1.2B

Prior: $1.1B

Q/Q Change

+7.67%

+$86.0M

Net Flows % of MV

+1.28%

Turnover Ratio

2.97%

New Purchases

19 stocks

$1.9M

Added To

294 stocks

+$43.2M

Sold Out Of

46 stocks

$1.4M

Reduced Holdings

275 stocks

-$28.4M

Increased Positions

Position	Shares Δ	Change
1 US Treasury 6 Month Bill ETF XBIL	New	0 → 15.0K +$754.0K
2 CAI CAI International CAI	New	0 → 15.7K +$473.4K
3 GPIX Goldman Sachs S&P 500 Core Premium Income GPIX	New	0 → 5.8K +$303.7K
4 JAJL Innovator Equity Defined Protection ETF JAJL	New	0 → 4.7K +$135.0K
5 Badger Meter BMI	New	0 → 416.0 +$74.3K

Decreased Positions

Position	Shares Δ	Change
1 Ansys ANSS	Sold	2.0K → 0 −$687.7K
2 Innovator Premium Income 10 Barrier ETF JULD	Sold	3.0K → 0 −$74.8K
3 GFL Environmental Inc. GFL	Sold	1.1K → 0 −$55.4K
4 WNS Holdings Limited WNS	Sold	866.0 → 0 −$54.8K
5 Atlassian TEAM	Sold	215.0 → 0 −$43.7K

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Analytics

Portfolio insights and performance metrics for HARBOR INVESTMENT ADVISORY, LLC

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Sector Allocation

ETF

27.90%

Consumer Cyclical

19.70%

Technology

17.40%

Financial Services

11.10%

Communication Services

6.60%

Healthcare

4.70%

Industrials

3.00%

Consumer Defensive

1.80%

Energy

1.40%

Real Estate

1.30%

Basic Materials

0.80%

Utilities

0.70%

Market Cap Distribution

Mega Cap (> $200B)

38.92%

Large Cap ($10B - $200B)

28.13%

Mid Cap ($2B - $10B)

1.11%

Small Cap ($300M - $2B)

0.14%

Micro Cap ($50M - $300M)

0.00%

Nano Cap (< $50M)

0.11%

N/A (ETF or Unknown)

31.60%

Portfolio Concentration

Top 10 Holdings %

39.29%

Top 20 Holdings %

49.56%

Top 50 Holdings %

65.85%

Top 100 Holdings %

78.93%