Harbor Advisors LLC
Long book
$692.2M
Q1 2026
Positions
197
Top-10 weight
66%
concentration
Last quarter
+13.6%
SPY +14.8%
Turnover
7%
of book per quarter
Strategy in plain words
auto-generated from filingsHarbor Advisors LLC is a diversified fundamental manager, running a $692.2M US long book across 197 positions.
The portfolio is concentrated: the top 10 names carry 66% of the portfolio. The book barely moves quarter to quarter — a patient, low-turnover holder. Current anchor positions: EQUINIX INC, ALPHABET INC-CL A, APPLE INC, AMAZON.COM INC, NVIDIA CORP.
Over the last 9 quarters its long book ran on average 0.3pp per quarter ahead of the S&P 500, beating the index in 4 of 9 quarters. We rate its filings as signal-bearing: position changes reflect genuine views.
Implied long-book return vs S&P 500
methodology: positions priced quarterly, no shorts/options Fund long book S&P 500
Q1 2024
+0.7%
Q2 2024
+9.6%
Q3 2024
+5.5%
Q4 2024
-9.2%
Q1 2025
+6.9%
Q2 2025
+6.4%
Q3 2025
+2.8%
Q4 2025
+6.5%
Q1 2026
+13.6%
Sector allocation
Technology 38%
Financials 20%
Services media 12%
Consumer discretionary 11%
Energy 8%
Industrials 4%
Communications 3%
Materials 1%
Long book by quarter
What does Harbor Advisors own?
Q1 2026 13F| Company | Sector | Shares | Value | % of book | Change |
|---|---|---|---|---|---|
| GOOGL ALPHABET INC-CL A | Technology | 145.6K | $41.9M | 6.0% | -6.4% |
| AAPL APPLE INC | Technology | 148.4K | $37.7M | 5.4% | Held |
| AMZN AMAZON.COM INC | Consumer discretionary | 153.2K | $31.9M | 4.6% | Held |
| NVDA NVIDIA CORP | Technology | 180.0K | $31.4M | 4.5% | Held |
| CNQ CANADIAN NATURAL RESOURCES | Energy | 499.8K | $24.4M | 3.5% | Held |
| MU MICRON TECHNOLOGY INC | Technology | 51.0K | $17.2M | 2.5% | +5.2% |
| FTAI FTAI AVIATION LTD | Services media | 57.0K | $14.0M | 2.0% | Held |
| MA MASTERCARD INC - A | Services media | 26.0K | $13.0M | 1.9% | Held |
| IBKR INTERACTIVE BROKERS GRO-CL A | Financials | 186.8K | $12.5M | 1.8% | Held |
| MSFT MICROSOFT CORP | Technology | 26.5K | $9.8M | 1.4% | +1.9% |
| FERG FERGUSON ENTERPRISES INC | Consumer discretionary | 41.3K | $9.6M | 1.4% | Held |
| META META PLATFORMS INC-CLASS A | Technology | 13.8K | $7.9M | 1.1% | Held |
| NTB BANK OF N.T. BUTTERFIELD&SON | Financials | 144.9K | $7.6M | 1.1% | -6.8% |
| JPM JPMORGAN CHASE & CO | Financials | 24.1K | $7.1M | 1.0% | Held |
| SPGI S&P GLOBAL INC | Services media | 13.7K | $5.8M | 0.8% | Held |
| PJT PJT PARTNERS INC - A | Financials | 41.5K | $5.8M | 0.8% | Held |
| GOOG ALPHABET INC-CL C | Technology | 20.0K | $5.7M | 0.8% | Held |
| NUE NUCOR CORP | Industrials | 28.0K | $4.7M | 0.7% | Held |
| EVR EVERCORE INC - A | Financials | 15.0K | $4.5M | 0.6% | Held |
| TMUS T-MOBILE US INC | Communications | 20.6K | $4.3M | 0.6% | Held |
| WMT WALMART INC | Consumer discretionary | 33.0K | $4.1M | 0.6% | Held |
| BLK BLACKROCK INC | Financials | 3.9K | $3.8M | 0.5% | Held |
| EOG EOG RESOURCES INC | Energy | 25.9K | $3.7M | 0.5% | Held |
| HLI HOULIHAN LOKEY INC | Financials | 25.0K | $3.6M | 0.5% | Held |
| MCO MOODY'S CORP | Services media | 8.0K | $3.5M | 0.5% | Held |
| NBIS NEBIUS GROUP NV | Technology | 27.6K | $2.9M | 0.4% | Held |
| MLM MARTIN MARIETTA MATERIALS | Materials | 4.5K | $2.6M | 0.4% | Held |
| MCB METROPOLITAN BANK HOLDING CO | Financials | 31.5K | $2.6M | 0.4% | Held |
| CVX CHEVRON CORP | Energy | 12.6K | $2.6M | 0.4% | Held |
| CRWD CROWDSTRIKE HOLDINGS INC - A | Technology | 6.3K | $2.4M | 0.4% | Held |
| DHR DANAHER CORP | Technology | 12.5K | $2.4M | 0.3% | Held |
| AKAM AKAMAI TECHNOLOGIES INC | Services media | 20.0K | $2.3M | 0.3% | Held |
| FOX FOX CORP - CLASS B | Communications | 41.3K | $2.2M | 0.3% | Held |
| PNC PNC FINANCIAL SERVICES GROUP | Financials | 10.4K | $2.2M | 0.3% | Held |
| HLT HILTON WORLDWIDE HOLDINGS IN | Services media | 7.1K | $2.2M | 0.3% | Held |
| EFX EQUIFAX INC | Services media | 12.0K | $2.2M | 0.3% | Held |
| FBK FB FINANCIAL CORP | Financials | 40.8K | $2.1M | 0.3% | Held |
| CTRA COTERRA ENERGY INC | — | 60.0K | $2.1M | 0.3% | Held |
| GE GENERAL ELECTRIC | Industrials | 7.0K | $2.0M | 0.3% | Held |
| CHTR CHARTER COMMUNICATIONS INC-A | Communications | 8.7K | $1.9M | 0.3% | -45.2% |
| AJG ARTHUR J GALLAGHER & CO | Financials | 8.4K | $1.8M | 0.3% | Held |
| HD HOME DEPOT INC | Consumer discretionary | 5.5K | $1.8M | 0.3% | Held |
| APO APOLLO GLOBAL MANAGEMENT INC | Financials | 15.9K | $1.8M | 0.3% | Held |
| BPOP POPULAR INC | Financials | 13.0K | $1.7M | 0.3% | Held |
| EG EVEREST GROUP LTD | Financials | 5.0K | $1.6M | 0.2% | Held |
| PLTR PALANTIR TECHNOLOGIES INC-A | Technology | 11.0K | $1.6M | 0.2% | Held |
| PANW PALO ALTO NETWORKS INC | Technology | 10.0K | $1.6M | 0.2% | -20.0% |
| CUBI CUSTOMERS BANCORP INC | Financials | 23.0K | $1.6M | 0.2% | Held |
| WFC WELLS FARGO & CO | Financials | 20.0K | $1.6M | 0.2% | Held |
| ARES ARES MANAGEMENT CORP - A | Financials | 14.5K | $1.6M | 0.2% | Held |
13F filing history
| Period | Form | Filed | Entries | Reported value | Flags | Source |
|---|---|---|---|---|---|---|
| Q1 2026 | 13F-HR | May 7, 2026 | 197 | $692.2M | canonical | SEC ↗ |
| Q4 2025 | 13F-HR | Jan 30, 2026 | 193 | $665.8M | canonical | SEC ↗ |
| Q3 2025 | 13F-HR | Nov 12, 2025 | 190 | $648.4M | canonical | SEC ↗ |
| Q2 2025 | 13F-HR | Aug 13, 2025 | 190 | $611.0M | canonical | SEC ↗ |
| Q1 2025 | 13F-HR | May 15, 2025 | 193 | $576.0M | canonical | SEC ↗ |
| Q4 2024 | 13F-HR | Feb 11, 2025 | 192 | $636.5M | canonical | SEC ↗ |
| Q3 2024 | 13F-HR | Nov 14, 2024 | 188 | $597.5M | canonical | SEC ↗ |
| Q2 2024 | 13F-HR | Jul 30, 2024 | 178 | $545.4M | canonical | SEC ↗ |
| Q1 2024 | 13F-HR | May 1, 2024 | 176 | $544.4M | canonical | SEC ↗ |
Similar funds
DIAMANT ASSET MANAGEMENT, INC. LILLY ENDOWMENT INCBROOKFIELD Corp /ON/GQG Partners LLCMITSUBISHI UFJ FINANCIAL GROUP INCNewport Trust Company, LLCVIKING GLOBAL INVESTORS LPPARNASSUS INVESTMENTS, LLC MASTERCARD FOUNDATION ASSET MANAGEMENT CORPPZENA INVESTMENT MANAGEMENT LLCCOATUE MANAGEMENT LLCWinslow Capital Management, LLC