Harbor Advisors Llc
Institutional manager — quarterly 13F holdings, Q ending 2026-03-31
Reported value
$692.2M
Q ending 2026-03-31
Prior quarter
$665.8M
Q ending 2025-12-31
Change
+4.0% QoQ · +20.2% YoY
Positions
197
reported holdings
Largest positions
Top 100 of 197 reported positions by value, Q ending 2026-03-31. A manager can hold shares, calls and puts on the same security at once — such positions are listed as separate rows. Type: Shares = common stock, Put/Call = option positions (valued at the underlying), Principal = debt. Tickers link to stock pages where covered.
| Holding | Ticker | Type | Value ▼ | Shares |
|---|---|---|---|---|
| Equinix Inc | EQIX | Shares | $234.5M | 239K |
| Alphabet Inc | GOOGL | Shares | $41.9M | 146K |
| Apple Inc | AAPL | Shares | $37.7M | 148K |
| Amazon Com Inc | AMZN | Shares | $31.9M | 153K |
| Nvidia Corporation | NVDA | Shares | $31.4M | 180K |
| Canadian Nat Res Ltd Med Ter | CNQ | Shares | $24.4M | 500K |
| Micron Technology Inc | MU | Shares | $17.2M | 51K |
| Ftai Aviation Ltd | Shares | $14.0M | 57K | |
| Mastercard Incorporated | MA | Shares | $13.0M | 26K |
| Interactive Brokers Group In | IBKR | Shares | $12.5M | 187K |
| Microsoft Corp | MSFT | Shares | $9.8M | 27K |
| Ferguson Enterprises Inc | FERG | Shares | $9.6M | 41K |
| Meta Platforms Inc | META | Shares | $7.9M | 14K |
| Bank Of N T Butterfield & So | Shares | $7.6M | 145K | |
| Jpmorgan Chase & Co | JPM | Shares | $7.1M | 24K |
| S&P Global Inc | SPGI | Shares | $5.8M | 14K |
| Pjt Partners Inc | PJT | Shares | $5.8M | 42K |
| Alphabet Inc | GOOG | Shares | $5.7M | 20K |
| Nucor Corp | NUE | Shares | $4.7M | 28K |
| Digital Rlty Tr Inc | DLR | Shares | $4.6M | 26K |
| Evercore Inc | EVR | Shares | $4.5M | 15K |
| T-Mobile Us Inc | TMUS | Shares | $4.3M | 21K |
| Walmart Inc | WMT | Shares | $4.1M | 33K |
| Blackrock Inc | BLK | Shares | $3.8M | 4K |
| Eog Res Inc | EOG | Shares | $3.7M | 26K |
| Houlihan Lokey Inc | HLI | Shares | $3.6M | 25K |
| Moodys Corp | MCO | Shares | $3.5M | 8K |
| Nebius Group N.V. | Shares | $2.9M | 28K | |
| Martin Marietta Matls Inc | MLM | Shares | $2.6M | 5K |
| Metropolitan Bk Hldg Corp | MCB | Shares | $2.6M | 32K |
| Chevron Corporation | CVX | Shares | $2.6M | 13K |
| Crowdstrike Hldgs Inc | CRWD | Shares | $2.4M | 6K |
| Danaher Corp Del | DHR | Shares | $2.4M | 13K |
| Akamai Technologies Inc | AKAM | Shares | $2.3M | 20K |
| Fox Corp | FOX | Shares | $2.2M | 41K |
| Pnc Finl Svcs Group Inc | PNC | Shares | $2.2M | 10K |
| Hilton Worldwide Hldgs Inc | HLT | Shares | $2.2M | 7K |
| Equifax Inc | EFX | Shares | $2.2M | 12K |
| Fb Finl Corp | FBK | Shares | $2.1M | 41K |
| Coterra Energy Inc | CTRA | Shares | $2.1M | 60K |
| Ge Aerospace | GE | Shares | $2.0M | 7K |
| Gds Hldgs Ltd | GDS | Shares | $1.9M | 48K |
| Charter Communications Inc | CHTR | Shares | $1.9M | 9K |
| Gallagher Arthur J & Co | AJG | Shares | $1.8M | 8K |
| Home Depot Inc | HD | Shares | $1.8M | 6K |
| Apollo Global Mgmt Inc | APO | Shares | $1.8M | 16K |
| Popular Inc | BPOP | Shares | $1.7M | 13K |
| Everest Group Ltd | Shares | $1.6M | 5K | |
| Palantir Technologies Inc | PLTR | Shares | $1.6M | 11K |
| Palo Alto Networks Inc | PANW | Shares | $1.6M | 10K |
| Customers Bancorp Inc | CUBI | Shares | $1.6M | 23K |
| Wells Fargo & Co | WFC | Shares | $1.6M | 20K |
| Ares Management Corporation | ARES | Shares | $1.6M | 15K |
| Blackstone Inc | BX | Shares | $1.6M | 14K |
| Brown & Brown Inc | BRO | Shares | $1.6M | 24K |
| Fidelity Natl Finl Inc | FNF | Shares | $1.5M | 33K |
| Thermo Fisher Scientific Inc | TMO | Shares | $1.5M | 3K |
| Canadian Pacific Kansas City | CP | Shares | $1.5M | 19K |
| Trane Technologies Plc | Shares | $1.5M | 4K | |
| Adobe Inc | ADBE | Shares | $1.5M | 6K |
| Exxon Mobil Corp | XOM | Shares | $1.4M | 8K |
| Rtx Corporation | RTX | Shares | $1.3M | 7K |
| Vertiv Holdings Co | VRT | Shares | $1.3M | 5K |
| Csx Corp | CSX | Shares | $1.2M | 30K |
| Conocophillips | COP | Shares | $1.2M | 9K |
| Visa Inc | V | Shares | $1.2M | 4K |
| Eli Lilly & Co | LLY | Shares | $1.2M | 1K |
| Echostar Corp | ECHO | Shares | $1.2M | 10K |
| Alibaba Group Hldg Ltd | BABA | Shares | $1.1M | 9K |
| Arch Cap Group Ltd | Shares | $1.1M | 12K | |
| United Rentals Inc | URI | Shares | $1.1M | 2K |
| Ge Vernova Inc | GEV | Shares | $1.1M | 1K |
| Morgan Stanley | MS | Shares | $1.1M | 7K |
| Broadcom Inc | AVGO | Shares | $1.1M | 4K |
| Costar Group Inc | CSGP | Shares | $1.1M | 27K |
| Western Alliance Bancorp | WAL | Shares | $1.1M | 15K |
| Pinnacle Finl Partners Inc | PNFP | Shares | $1.0M | 12K |
| Lennox Intl Inc | LII | Shares | $1.0M | 2K |
| Bank Ozk Little Rock Ark | OZK | Shares | $985K | 21K |
| First Ctzns Bancshares Inc D | FCNCA | Shares | $965K | 512 |
| Liberty Broadband Corp | LBRDK | Shares | $939K | 19K |
| Yum China Hldgs Inc | YUMC | Shares | $927K | 19K |
| Asml Hldg Nv | Shares | $925K | 700 | |
| Octave Specialty Group Inc | OSG | Shares | $913K | 196K |
| Pfizer Inc | PFE | Shares | $897K | 32K |
| Lowes Cos Inc | LOW | Shares | $874K | 4K |
| Diamondback Energy Inc | FANG | Shares | $870K | 4K |
| Mckesson Corp | MCK | Shares | $865K | 1K |
| Norfolk Southn Corp | NSC | Shares | $861K | 3K |
| Moelis & Co | MC | Shares | $844K | 15K |
| Snowflake Inc | SNOW | Shares | $830K | 6K |
| Advanced Micro Devices Inc | AMD | Shares | $814K | 4K |
| Cbre Group Inc | CBRE | Shares | $813K | 6K |
| Aon Plc | Shares | $807K | 3K | |
| Fti Consulting Inc | FCN | Shares | $795K | 5K |
| Keurig Dr Pepper Inc | KDP | Shares | $790K | 30K |
| Ishares Tr | IWV | Shares | $741K | 2K |
| Carrier Global Corporation | CARR | Shares | $732K | 13K |
| Williams Cos Inc | WMB | Shares | $728K | 10K |
| Berkshire Hathaway Inc Del | BRK/A | Shares | $718K | 1 |
Values as reported in public regulatory filings (USD); holdings are reported quarterly, up to 45 days after quarter end, and may contain reporting errors. Nothing here is investment advice.