HARBOR ADVISORY CORP /MA/
Long book
$332.8M
Q1 2026
Positions
79
Top-10 weight
41%
concentration
Last quarter
+13.4%
SPY +14.8%
Turnover
9%
of book per quarter
Strategy in plain words
auto-generated from filingsHARBOR ADVISORY CORP /MA/ is a wealth-management firm allocating client money, running a $332.8M US long book across 79 positions.
The portfolio is moderately concentrated (top 10 ≈ 41% of the book). The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: VANGUARD S&P 500 ETF, ALPHABET INC-CL A, FIRST TRUST SENIOR LOAN ETF, VANGUARD FTSE EUROPE ETF, ISHARES CORE S&P MIDCAP ETF.
Over the last 9 quarters its long book ran on average 0.4pp per quarter behind the S&P 500, beating the index in 4 of 9 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+1.2%
Q2 2024
+6.3%
Q3 2024
-0.5%
Q4 2024
-1.8%
Q1 2025
+6.5%
Q2 2025
+8.1%
Q3 2025
+4.2%
Q4 2025
-0.9%
Q1 2026
+13.4%
Sector allocation
Technology 38%
Healthcare 18%
Financials 16%
Consumer discretionary 15%
Consumer staples 4%
Energy 4%
Services media 2%
Other 1%
Long book by quarter
What does HARBOR ADVISORY own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| GOOGL ALPHABET INC-CL A | Technology | 52.3K | $15.0M | 4.5% | -17.2% |
| AMZN AMAZON.COM INC | Consumer discretionary | 61.9K | $12.9M | 3.9% | -3.3% |
| BRK/B BERKSHIRE HATHAWAY INC-CL B | Financials | 22.1K | $10.6M | 3.2% | -7.1% |
| AAPL APPLE INC | Technology | 40.5K | $10.3M | 3.1% | -7.9% |
| MSFT MICROSOFT CORP | Technology | 22.0K | $8.2M | 2.4% | +34.7% |
| CSCO CISCO SYSTEMS INC | Technology | 99.5K | $7.7M | 2.3% | +129.5% |
| JNJ JOHNSON & JOHNSON | Healthcare | 29.7K | $7.3M | 2.2% | -8.7% |
| JPM JPMORGAN CHASE & CO | Financials | 23.1K | $6.8M | 2.0% | -10.7% |
| PFE PFIZER INC | Healthcare | 178.7K | $5.0M | 1.5% | -2.0% |
| PEP PEPSICO INC | Consumer staples | 26.2K | $4.1M | 1.2% | -5.9% |
| ABBV ABBVIE INC | Healthcare | 16.7K | $3.6M | 1.1% | -14.2% |
| MRK MERCK & CO. INC. | Healthcare | 23.9K | $2.9M | 0.9% | -2.2% |
| ABT ABBOTT LABORATORIES | Healthcare | 24.3K | $2.5M | 0.8% | -9.5% |
| XOM EXXON MOBIL CORP | Energy | 14.0K | $2.4M | 0.7% | +9.3% |
| V VISA INC-CLASS A SHARES | Services media | 7.4K | $2.2M | 0.7% | -6.8% |
| CVX CHEVRON CORP | Energy | 10.6K | $2.2M | 0.7% | -0.3% |
| LOW LOWE'S COS INC | Consumer discretionary | 7.0K | $1.7M | 0.5% | -0.3% |
| HD HOME DEPOT INC | Consumer discretionary | 4.8K | $1.6M | 0.5% | -0.7% |
| MCD MCDONALD'S CORP | Consumer discretionary | 4.5K | $1.4M | 0.4% | Held |
| GOOG ALPHABET INC-CL C | Technology | 4.6K | $1.3M | 0.4% | -15.2% |
| PG PROCTER & GAMBLE CO/THE | Other | 8.7K | $1.3M | 0.4% | -0.8% |
| BAC BANK OF AMERICA CORP | Financials | 20.4K | $995K | 0.3% | -0.8% |
| IBM INTL BUSINESS MACHINES CORP | Technology | 3.2K | $784K | 0.2% | +6.6% |
| BIPC BROOKFIELD INFRASTRUCTURE-A | Utilities | 19.1K | $753K | 0.2% | -4.4% |
| KO COCA-COLA CO/THE | Consumer staples | 7.1K | $539K | 0.2% | Held |
| GE GENERAL ELECTRIC | Industrials | 1.7K | $490K | 0.1% | Held |
| AMAT APPLIED MATERIALS INC | Technology | 1.1K | $393K | 0.1% | Held |
| GEV GE VERNOVA INC | Industrials | 428 | $374K | 0.1% | Held |
| PM PHILIP MORRIS INTERNATIONAL | Consumer staples | 2.2K | $372K | 0.1% | -15.0% |
| AVGO BROADCOM INC | Technology | 1.2K | $362K | 0.1% | -14.7% |
| ASML ASML HOLDING NV-NY REG SHS | Industrials | 257 | $339K | 0.1% | Held |
| GWW WW GRAINGER INC | Consumer discretionary | 255 | $278K | 0.1% | Held |
| STXN SEAGATE TECHNOLOGY HOLDINGS | — | 527 | $206K | 0.1% | New |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 7, 2026 | 79 | $332.8M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Feb 6, 2026 | 78 | $330.6M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 12, 2025 | 80 | $338.2M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 12, 2025 | 81 | $313.8M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 13, 2025 | 83 | $297.9M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Jan 29, 2025 | 86 | $304.4M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Oct 21, 2024 | 90 | $306.4M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 25, 2024 | 84 | $289.5M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | Apr 29, 2024 | 86 | $293.8M | canonical | SEC ↗ |