Harbor Advisors LLC — 13F Holdings & Portfolio
CIK 1687156 · latest 13F-HR filed 2026-07-28
Harbor Advisors LLC manages $795.1M in 13F-reported U.S. long-equity assets across 194 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are EQIX (31.36%), MU (7.26%), GOOGL (6.54%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 10 new positions and exited 13; 99 existing positions rose in reported value and 49 fell.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
Loading holdings…
AUM
$795.1M
Long-equity book
Holdings
194
Distinct positions
Period
2026-06-30
Filed 2026-07-28
Q/Q Activity
+10 / −13 / ↑99 / ↓49
vs 2026-03-31
Portfolio charts
Latest quarter's book, what changed, and how the portfolio has evolved across filings.
Portfolio map
Q2 26EQIX31.4% · 0%MU7.3% · -2%GOOGL6.5% · 0%AAPL5.4% · 0%AMZN4.6% · 0%NVDA4.5% · 0%CNQ2.5% · 0%IBKR2.0% · 0%FTAI1.9% · 0%MA1.7% · 0%MSFT1.2% · 0%FERG1.2% · 0%NTB1.1% · 0%JPM1.0% · 0%META1.0% · 0%NBIS1.0% · 0%GOOG0.9% · 0%PJT0.8% · 0%NUE0.8% · 0%SPGI0.7% · 0%DLR0.7% · +20%EVR0.6% · 0%CRWD0.6% · 0%BLK0.5% · 0%WMT0.5% · 0%MCO0.5% · 0%TMUS0.4% · 0%PANW0.4% · 0%EOG0.4% · 0%HLI0.4% · 0%MCB0.4% · 0%GE0.3% · 0%MLM0.3% · 0%PNC0.3% · 0%DHR0.3% · 0%AKAM0.3% · 0%HLT0.3% · 0%AMD0.3% · 0%FBK0.3% · 0%DVN0.3% · +407%BPOP0.3% · 0%CVX0.3% · 0%HD0.2% · 0%FOX0.2% · 0%AJG0.2% · 0%EFX0.2% · 0%APO0.2% · 0%CUBI0.2% · 0%GDS0.2% · +26%EG0.2% · 0%TT0.2% · 0%URI0.2% · 0%VRT0.2% · 0%WFC0.2% · 0%CP0.2% · 0%ARES0.2% · 0%BX0.2% · 0%FNF0.2% · 0%LLY0.2% · 0%BRO0.2% · 0%
Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.
Sector mix
% of 13F valueSectors from each company's SIC code; funds and ETFs grouped separately.
Biggest buys and sells
Q1 26 → Q2 26Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.
13F assets and positions
3 quartersTotal reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.
Top positions over time
reported valueThe eight largest current positions, valued at each quarter end.
Concentration
top 10 = 67.8%Cumulative share of the portfolio held in the largest N positions.
Firm Profile & Key People
As of the firm’s regulatory filing dated Aug 5, 2026.
Assets Under Management
$67.64B
Discretionary
$67.64B
Employees
240
Accounts
15
Address
111 SOUTH WACKER DRIVE
34TH FLOOR
CHICAGO, IL 60606-4302
34TH FLOOR
CHICAGO, IL 60606-4302
Phone
(312) 443-4400
| Name | Title / Status | Ownership | Type |
|---|---|---|---|
| BREUNINGER, WALTER, OTTO Control | SENIOR VICE PRESIDENT & CHIEF COMPLIANCE OFFICER since Nov 2024 | Less than 5% | Individual |
| COOK, STEPHEN, WILLIAM Control | CHIEF OPERATIONS OFFICER, SENIOR VICE PRESIDENT since Apr 2025 | Less than 5% | Individual |
| ERCEG, JAMES, Pierson Control | EXECUTIVE VICE PRESIDENT since Dec 2019 | Less than 5% | Individual |
| GLEICH, KRISTOF, MARIUS Control | PRESIDENT since Nov 2018 | Less than 5% | Individual |
| HALABY, JOHN, STEVE Control | EXECUTIVE VICE PRESIDENT since Aug 2019 | Less than 5% | Individual |
| Habiro, Kiyoshi Control | DIRECTOR since Jan 2022 | Less than 5% | Individual |
| MCCAIN, CHARLES, FREDERICK Control | CHIEF EXECUTIVE OFFICER since Sep 2017 | Less than 5% | Individual |
| MCCAIN, CHARLES, FREDERICK Control | DIRECTOR since Sep 2007 | Less than 5% | Individual |
| OCE US HOLDING INC. Control | SOLE SHAREHOLDER since Jan 2006 | 75% or more | Domestic Entity |
| ROMAN-PODGORNY, DIANA Control | EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY since Jul 2023 | Less than 5% | Individual |
| TALBOT, M.A.A.C. (MARK) Control | DIRECTOR since Apr 2024 | Less than 5% | Individual |
| VAN HASSEL, GILBERT Control | DIRECTOR since Jul 2025 | Less than 5% | Individual |
| VAN HOOSER, DAVID, GORDON Control | CHAIRMAN OF THE BOARD OF DIRECTORS, DIRECTOR since Apr 2001 | Less than 5% | Individual |
| OCE US HOLDING B.V. (FKA ROBECO US HOLDING B.V.) Control Indirect owner via OCE US HOLDING INC. | SOLE SHAREHOLDER since Nov 2014 | 75% or more | Foreign Entity |
| ORIX CORPORATION Control Indirect owner via ORIX CORPORATION EUROPE N.V. | SOLE SHAREHOLDER since Oct 2016 | 75% or more | Foreign Entity |
| ORIX CORPORATION EUROPE N.V. Control Indirect owner via OCE US HOLDING B.V. (FKA ROBECO US HOLDING B.V.) | SOLE SHAREHOLDER since Nov 2014 | 75% or more | Foreign Entity |
Ownership & leadership changes · 40 filings with changes since Mar 30, 2012
From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.
Aug 5, 2026 filing
- No longer listedKMIECIAK, LORA, ANN · EXECUTIVE VICE PRESIDENT, CHIEF FINANCIAL OFFICER AND TREASURER · Less than 5% · control person · listed since Oct 2022
Dec 11, 2025 filing
- No longer listedLABOE, MATTHEW, JEROME · EXECUTIVE VICE PRESIDENT AND CHIEF INFORMATION OFFICER · Less than 5% · listed since Oct 2008
- AddedCOOK, STEPHEN, WILLIAM · CHIEF OPERATIONS OFFICER, SENIOR VICE PRESIDENT · Less than 5% · control person
Jul 15, 2025 filing
- Listed againVAN HASSEL, GILBERT · DIRECTOR · Less than 5% · control person
Mar 25, 2025 filing
- No longer listedBOLAND, GREGG, MARTIN · EXECUTIVE VICE PRESIDENT · Less than 5% · listed since May 2020
Nov 1, 2024 filing
- AddedBREUNINGER, WALTER, OTTO · SENIOR VICE PRESIDENT & CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ChangedROMAN-PODGORNY, DIANA · title EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL, CHIEF COMPLIANCE OFFICER & SECRETARY → EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY
Jun 20, 2024 filing
- No longer listedSARHADDI, RICHARD, CYRUS · SENIOR VICE PRESIDENT AND CHIEF COMPLIANCE OFFICER · Less than 5% · control person · listed since Feb 2023
- ChangedROMAN-PODGORNY, DIANA · title EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY → EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL, CHIEF COMPLIANCE OFFICER & SECRETARY
Apr 26, 2024 filing
- No longer listedVAN HASSEL, GILBERT · DIRECTOR · Less than 5% · control person · listed since Sep 2018
- AddedTALBOT, M.A.A.C. (MARK) · DIRECTOR · Less than 5% · control person
Jul 17, 2023 filing
- No longer listedOJALA, ERIK, DONALD · EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY · Less than 5% · control person · listed since Jun 2017
- AddedROMAN-PODGORNY, DIANA · EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY · Less than 5% · control person
Feb 17, 2023 filing
- AddedSARHADDI, RICHARD, CYRUS · SENIOR VICE PRESIDENT AND CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ChangedKMIECIAK, LORA, ANN · now a control person
- ChangedOJALA, ERIK, DONALD · title EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL, CHIEF COMPLIANCE OFFICER & SECRETARY → EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY
Oct 14, 2022 filing
- No longer listedKOLINSKI, ANMARIE, SUE · EXECUTIVE VICE PRESIDENT, CHIEF FINANCIAL OFFICER & TREASURER · Less than 5% · control person · listed since Oct 2007
- AddedKMIECIAK, LORA, ANN · EXECUTIVE VICE PRESIDENT, CHIEF FINANCIAL OFFICER AND TREASURER · Less than 5%
Older changes (31 more filings)
Sep 7, 2022 filing
- No longer listedCROTTEAU, JODIE, LYNN · CHIEF COMPLIANCE OFFICER, SENIOR VICE PRESIDENT & ASSISTANT SECRETARY · Less than 5% · control person · listed since Aug 2014
- ChangedOJALA, ERIK, DONALD · title EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY → EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL, CHIEF COMPLIANCE OFFICER & SECRETARY
Jan 24, 2022 filing
- No longer listedMATSUOKA, YOSHIAKI · DIRECTOR · Less than 5% · control person · listed since Jun 2018
- No longer listedORIX CORPORATION EUROPE N.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING B.V. · control person · listed since Nov 2014
- No longer listedROBECO US HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via OCE US HOLDING INC. · control person · listed since Nov 2014
- AddedHabiro, Kiyoshi · DIRECTOR · Less than 5% · control person
- AddedOCE US HOLDING B.V. (FKA ROBECO US HOLDING B.V.) · SOLE SHAREHOLDER · 75% or more · indirect via OCE US HOLDING INC. · control person
- AddedORIX CORPORATION EUROPE N.V. · SOLE SHAREHOLDER · 75% or more · indirect via OCE US HOLDING B.V. (FKA ROBECO US HOLDING B.V.) · control person
May 20, 2021 filing
- No longer listedPallai, Matthew, Gian · EXECUTIVE VICE PRESIDENT · Less than 5% · listed since May 2020
Mar 31, 2021 filing
- No longer listedOCE US HOLDING INC. (FKA ROBECO US HOLDING INC.) · SOLE SHAREHOLDER · 75% or more · control person · listed since Jan 2006
- No longer listedORIX CORPORATION · SOLE SHAREHOLDER · 75% or more · indirect via ORIX CORPORATION EUROPE N.V. (FKA ROBECO GROEP N.V.) · control person · listed since Oct 2016
- No longer listedORIX CORPORATION EUROPE N.V. (FKA ROBECO GROEP N.V.) · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING B.V. · control person · listed since Nov 2014
- No longer listedROBECO US HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via OCE US HOLDING INC. (FKA ROBECO US HOLDING INC.) · control person · listed since Nov 2014
- AddedOCE US HOLDING INC. · SOLE SHAREHOLDER · 75% or more · control person
- AddedORIX CORPORATION · SOLE SHAREHOLDER · 75% or more · indirect via ORIX CORPORATION EUROPE N.V. · control person
- AddedORIX CORPORATION EUROPE N.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING B.V. · control person
- AddedROBECO US HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via OCE US HOLDING INC. · control person
Dec 11, 2020 filing
- No longer listedCOLLINS, BRIAN, LYNCH · CHIEF INVESTMENT OFFICER AND EXECUTIVE VICE PRESIDENT · Less than 5% · control person · listed since May 2004
Jul 8, 2020 filing
- AddedBOLAND, GREGG, MARTIN · EXECUTIVE VICE PRESIDENT · Less than 5%
- AddedPallai, Matthew, Gian · EXECUTIVE VICE PRESIDENT · Less than 5%
Dec 23, 2019 filing
- AddedERCEG, JAMES, Pierson · EXECUTIVE VICE PRESIDENT · Less than 5% · control person
Sep 3, 2019 filing
- No longer listedRAGUSA, CHARLES, PHILIP · EXECUTIVE VICE PRESIDENT · Less than 5% · listed since May 2007
- AddedHALABY, JOHN, STEVE · EXECUTIVE VICE PRESIDENT · Less than 5% · control person
Jun 13, 2019 filing
- No longer listedKELLY, HUGH, MORRIS · EXECUTIVE VICE PRESIDENT, SALES AND MARKETING · Less than 5% · listed since Nov 2002
Nov 20, 2018 filing
- AddedGLEICH, KRISTOF, MARIUS · PRESIDENT · Less than 5% · control person
Oct 16, 2018 filing
- No longer listedROBECO US HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING INC. · control person · listed since Nov 2014
- No longer listedROBECO US HOLDING INC. · SOLE SHAREHOLDER · 75% or more · control person · listed since Jan 2006
- AddedOCE US HOLDING INC. (FKA ROBECO US HOLDING INC.) · SOLE SHAREHOLDER · 75% or more · control person
- AddedROBECO US HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via OCE US HOLDING INC. (FKA ROBECO US HOLDING INC.) · control person
Sep 21, 2018 filing
- AddedVAN HASSEL, GILBERT · DIRECTOR · Less than 5% · control person
Jun 20, 2018 filing
- No longer listedKAWANO, MASAAKI, (NMN) · DIRECTOR · Less than 5% · control person · listed since Jan 2017
- AddedMATSUOKA, YOSHIAKI · DIRECTOR · Less than 5% · control person
Mar 28, 2018 filing
- No longer listedORIX CORPORATION · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO GROEP N.V. · control person · listed since Oct 2016
- AddedORIX CORPORATION · SOLE SHAREHOLDER · 75% or more · indirect via ORIX CORPORATION EUROPE N.V. (FKA ROBECO GROEP N.V.) · control person
Jan 2, 2018 filing
- No longer listedROBECO GROEP N.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING B.V. · control person · listed since Nov 2014
- AddedKAWANO, MASAAKI, (NMN) · DIRECTOR · Less than 5% · control person
- AddedORIX CORPORATION EUROPE N.V. (FKA ROBECO GROEP N.V.) · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING B.V. · control person
Oct 16, 2017 filing
- ChangedCROTTEAU, JODIE, LYNN · title CHIEF COMPLIANCE OFFICER AND SENIOR VICE PRESIDENT → CHIEF COMPLIANCE OFFICER, SENIOR VICE PRESIDENT & ASSISTANT SECRETARY
- ChangedKOLINSKI, ANMARIE, SUE · title EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER → EXECUTIVE VICE PRESIDENT, CHIEF FINANCIAL OFFICER & TREASURER
- ChangedMCCAIN, CHARLES, FREDERICK · title DIRECTOR / PRESIDENT AND CHIEF OPERATING OFFICER → CHIEF EXECUTIVE OFFICER / DIRECTOR
- ChangedOJALA, ERIK, DONALD · title EXECUTIVE VICE PRESIDENT AND GENERAL COUNSEL → EXECUTIVE VICE PRESIDENT, GENERAL COUNSEL & SECRETARY
- ChangedVAN HOOSER, DAVID, GORDON · title CHAIRMAN OF THE BOARD OF DIRECTORS, DIRECTOR AND CHIEF EXECUTIVE OFFICER → CHAIRMAN OF THE BOARD OF DIRECTORS, DIRECTOR
Jun 7, 2017 filing
- AddedOJALA, ERIK, DONALD · EXECUTIVE VICE PRESIDENT AND GENERAL COUNSEL · Less than 5% · control person
- ChangedMCCAIN, CHARLES, FREDERICK · title DIRECTOR, GENERAL COUNSEL AND EXECUTIVE VICE PRESIDENT → DIRECTOR / PRESIDENT AND CHIEF OPERATING OFFICER
- ChangedVAN HOOSER, DAVID, GORDON · title CHAIRMAN OF THE BOARD OF DIRECTORS, DIRECTOR, CHIEF EXECUTIVE OFFICER AND PRESIDENT → CHAIRMAN OF THE BOARD OF DIRECTORS, DIRECTOR AND CHIEF EXECUTIVE OFFICER
Feb 23, 2017 filing
- No longer listedHOFMANN, WAYNE, CHRISTOPHER · EXECUTIVE VICE PRESIDENT AND CHIEF INVESTMENT STRATEGEST · Less than 5% · control person · listed since Aug 2013
Nov 22, 2016 filing
- No longer listedBOEREN, LENA, MARIA TEUNTJE · DIRECTOR · Less than 5% · control person · listed since Jan 2016
Oct 31, 2016 filing
- ChangedORIX CORPORATION · indirect via ROBECO GROEP N.V.: title PRIMARY SHAREHOLDER → SOLE SHAREHOLDER
May 25, 2016 filing
- No longer listedSTEYN, DAVID, ANDREW · DIRECTOR · Less than 5% · control person · listed since Jan 2016
Jan 13, 2016 filing
- No longer listedMUNSTERS, RODERICK, MARIE STELLA MARIS · DIRECTOR · Less than 5% · control person · listed since Sep 2011
- AddedBOEREN, LENA, MARIA TEUNTJE · DIRECTOR · Less than 5% · control person
- AddedSTEYN, DAVID, ANDREW · DIRECTOR · Less than 5% · control person
May 4, 2015 filing
- No longer listedSTEGMANN, JURRIANUS, BERNARDUS JOHANNES · DIRECTOR · Less than 5% · control person · listed since Sep 2011
Mar 31, 2015 filing
- ChangedLABOE, MATTHEW, JEROME · title EXECUTIVE VICE PRESIDENT - INFORMATION TECHNOLOGY → EXECUTIVE VICE PRESIDENT AND CHIEF INFORMATION OFFICER
Feb 3, 2015 filing
- ChangedCROTTEAU, JODIE, LYNN · title CHIEF COMPLIANCE OFFICER AND VICE PRESIDENT → CHIEF COMPLIANCE OFFICER AND SENIOR VICE PRESIDENT
Dec 2, 2014 filing
- No longer listedROBECO GROEP N.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO INTERNATIONAL HOLDING B.V. · control person · listed since Dec 2003
- AddedROBECO GROEP N.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING B.V. · control person
Dec 1, 2014 filing
- No longer listedROBECO INTERNATIONAL HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING INC. · control person · listed since Jan 2006
- AddedROBECO US HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING INC. · control person
Aug 1, 2014 filing
- AddedCROTTEAU, JODIE, LYNN · CHIEF COMPLIANCE OFFICER AND VICE PRESIDENT · Less than 5% · control person
- ChangedMCCAIN, CHARLES, FREDERICK · title DIRECTOR, GENERAL COUNSEL, EXECUTIVE VICE PRESIDENT AND CHIEF COMPLIANCE OFFICER → DIRECTOR, GENERAL COUNSEL AND EXECUTIVE VICE PRESIDENT
Sep 6, 2013 filing
- AddedHOFMANN, WAYNE, CHRISTOPHER · EXECUTIVE VICE PRESIDENT AND CHIEF INVESTMENT STRATEGEST · Less than 5% · control person
Jul 15, 2013 filing
- No longer listedCOOPERATIVE CENTRALE RAIFFEISSEN BOERENLEENBANK B.A. (RABOBANK NEDERLAND) · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO GROEP N.V. · control person · listed since Dec 2002
- AddedORIX CORPORATION · PRIMARY SHAREHOLDER · 75% or more · indirect via ROBECO GROEP N.V. · control person
Mar 30, 2012 filing (earliest on record)
- ListedCOLLINS, BRIAN, LYNCH · CHIEF INVESTMENT OFFICER AND EXECUTIVE VICE PRESIDENT · Less than 5% · control person
- ListedCOOPERATIVE CENTRALE RAIFFEISSEN BOERENLEENBANK B.A. (RABOBANK NEDERLAND) · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO GROEP N.V. · control person
- ListedKELLY, HUGH, MORRIS · EXECUTIVE VICE PRESIDENT, SALES AND MARKETING · Less than 5%
- ListedKOLINSKI, ANMARIE, SUE · EXECUTIVE VICE PRESIDENT AND CHIEF FINANCIAL OFFICER · Less than 5% · control person
- ListedLABOE, MATTHEW, JEROME · EXECUTIVE VICE PRESIDENT - INFORMATION TECHNOLOGY · Less than 5%
- ListedMCCAIN, CHARLES, FREDERICK · DIRECTOR, GENERAL COUNSEL, EXECUTIVE VICE PRESIDENT AND CHIEF COMPLIANCE OFFICER · Less than 5% · control person
- ListedMUNSTERS, RODERICK, MARIE STELLA MARIS · DIRECTOR · Less than 5% · control person
- ListedRAGUSA, CHARLES, PHILIP · EXECUTIVE VICE PRESIDENT · Less than 5%
- ListedROBECO GROEP N.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO INTERNATIONAL HOLDING B.V. · control person
- ListedROBECO INTERNATIONAL HOLDING B.V. · SOLE SHAREHOLDER · 75% or more · indirect via ROBECO US HOLDING INC. · control person
- ListedROBECO US HOLDING INC. · SOLE SHAREHOLDER · 75% or more · control person
- ListedSTEGMANN, JURRIANUS, BERNARDUS JOHANNES · DIRECTOR · Less than 5% · control person
- ListedVAN HOOSER, DAVID, GORDON · CHAIRMAN OF THE BOARD OF DIRECTORS, DIRECTOR, CHIEF EXECUTIVE OFFICER AND PRESIDENT · Less than 5% · control person
Quarter-over-quarter changes
Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.
Top Adds (vs prior quarter)
- MICRON TECHNOLOGY INC$40.5M +235.0%
- EQUINIX INC$14.9M +6.3%
- ALPHABET INC$10.2M +24.3%
- APPLE INC$5.3M +14.0%
- NEBIUS GROUP N.V.$4.8M +166.2%
Top Trims
- CANADIAN NAT RES LTD MED TER-$4.6M -18.9%
- T-MOBILE US INC-$873.5K -20.1%
- CHARTER COMMUNICATIONS INC-$644.2K -34.1%
- CHEVRON CORPORATION-$517.2K -19.9%
- EOG RES INC-$384.4K -10.3%
New Positions
- MCDONALDS CORP$540.6K
- TRULIEVE CANNABIS CORP$484.2K
- THIRD COAST BANCSHARES INC$404.0K
- SERVICENOW INC$297.8K
- NAVITAS SEMICONDUCTOR CORP$268.8K
Exited Positions
- COTERRA ENERGY INC$2.1M
- EXXON MOBIL CORP$1.4M
- LIBERTY GLOBAL LTD$285.3K
- VERSANT MEDIA GROUP INC$277.6K
- HCA HEALTHCARE INC$236.6K
Harbor Advisors LLC Holdings (2026-06-30)
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | EQUINIX INC | EQIX | 29444U700 | $249.4M | 31.36% | 239,240 | SH |
| 2 | MICRON TECHNOLOGY INC | MU | 595112103 | $57.7M | 7.26% | 50,000 | SH |
| 3 | ALPHABET INC | GOOGL | 02079K305 | $52.0M | 6.54% | 145,600 | SH |
| 4 | APPLE INC | AAPL | 037833100 | $42.9M | 5.40% | 148,400 | SH |
| 5 | AMAZON COM INC | AMZN | 023135106 | $36.5M | 4.59% | 153,200 | SH |
| 6 | NVIDIA CORPORATION | NVDA | 67066G104 | $36.0M | 4.53% | 180,000 | SH |
| 7 | CANADIAN NAT RES LTD MED TER | CNQ | 136385101 | $19.7M | 2.48% | 499,800 | SH |
| 8 | INTERACTIVE BROKERS GROUP IN | IBKR | 45841N107 | $16.3M | 2.05% | 186,832 | SH |
| 9 | FTAI AVIATION LTD | FTAI | G3730V105 | $15.4M | 1.94% | 57,000 | SH |
| 10 | MASTERCARD INCORPORATED | MA | 57636Q104 | $13.4M | 1.68% | 26,000 | SH |
| 11 | MICROSOFT CORP | MSFT | 594918104 | $9.9M | 1.24% | 26,500 | SH |
| 12 | FERGUSON ENTERPRISES INC | FERG | 31488V107 | $9.8M | 1.23% | 41,255 | SH |
| 13 | BANK OF N T BUTTERFIELD & SO | NTB | G0772R208 | $8.6M | 1.08% | 144,908 | SH |
| 14 | JPMORGAN CHASE & CO | JPM | 46625H100 | $7.9M | 0.99% | 24,148 | SH |
| 15 | META PLATFORMS INC | META | 30303M102 | $7.8M | 0.98% | 13,800 | SH |
| 16 | NEBIUS GROUP N.V. | NBIS | N97284108 | $7.6M | 0.96% | 27,600 | SH |
| 17 | ALPHABET INC | GOOG | 02079K107 | $7.1M | 0.89% | 20,000 | SH |
| 18 | PJT PARTNERS INC | PJT | 69343T107 | $6.3M | 0.79% | 41,519 | SH |
| 19 | NUCOR CORP | NUE | 670346105 | $6.2M | 0.78% | 27,992 | SH |
| 20 | S&P GLOBAL INC | SPGI | 78409V104 | $5.6M | 0.70% | 13,667 | SH |
| 21 | DIGITAL RLTY TR INC | DLR | 253868103 | $5.5M | 0.69% | 30,552 | SH |
| 22 | EVERCORE INC | EVR | 29977A105 | $5.1M | 0.64% | 15,000 | SH |
| 23 | CROWDSTRIKE HLDGS INC | CRWD | 22788C105 | $4.8M | 0.60% | 6,250 | SH |
| 24 | BLACKROCK INC | BLK | 09290D101 | $3.8M | 0.47% | 3,924 | SH |
| 25 | WALMART INC | WMT | 931142103 | $3.7M | 0.47% | 33,000 | SH |
| 26 | MOODYS CORP | MCO | 615369105 | $3.6M | 0.46% | 8,000 | SH |
| 27 | T-MOBILE US INC | TMUS | 872590104 | $3.5M | 0.44% | 20,650 | SH |
| 28 | PALO ALTO NETWORKS INC | PANW | 697435105 | $3.4M | 0.43% | 10,000 | SH |
| 29 | EOG RES INC | EOG | 26875P101 | $3.4M | 0.42% | 25,900 | SH |
| 30 | HOULIHAN LOKEY INC | HLI | 441593100 | $3.4M | 0.42% | 25,000 | SH |
| 31 | METROPOLITAN BK HLDG CORP | MCB | 591774104 | $3.1M | 0.39% | 31,500 | SH |
| 32 | GE AEROSPACE | GE | 369604301 | $2.6M | 0.33% | 7,000 | SH |
| 33 | MARTIN MARIETTA MATLS INC | MLM | 573284106 | $2.6M | 0.33% | 4,500 | SH |
| 34 | PNC FINL SVCS GROUP INC | PNC | 693475105 | $2.6M | 0.32% | 10,444 | SH |
| 35 | DANAHER CORP DEL | DHR | 235851102 | $2.4M | 0.30% | 12,505 | SH |
| 36 | AKAMAI TECHNOLOGIES INC | AKAM | 00971T101 | $2.4M | 0.30% | 20,000 | SH |
| 37 | HILTON WORLDWIDE HLDGS INC | HLT | 43300A203 | $2.4M | 0.30% | 7,133 | SH |
| 38 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $2.3M | 0.29% | 4,000 | SH |
| 39 | FB FINL CORP | FBK | 30257X104 | $2.3M | 0.28% | 40,799 | SH |
| 40 | DEVON ENERGY CORP NEW | DVN | 25179M103 | $2.2M | 0.27% | 52,360 | SH |
| 41 | POPULAR INC | BPOP | 733174700 | $2.1M | 0.27% | 13,000 | SH |
| 42 | CHEVRON CORPORATION | CVX | 166764100 | $2.1M | 0.26% | 12,572 | SH |
| 43 | HOME DEPOT INC | HD | 437076102 | $1.9M | 0.24% | 5,500 | SH |
| 44 | FOX CORP | FOX | 35137L204 | $1.9M | 0.24% | 41,265 | SH |
| 45 | GALLAGHER ARTHUR J & CO | AJG | 363576109 | $1.9M | 0.24% | 8,375 | SH |
| 46 | EQUIFAX INC | EFX | 294429105 | $1.9M | 0.24% | 12,000 | SH |
| 47 | APOLLO GLOBAL MGMT INC | APO | 03769M106 | $1.9M | 0.24% | 15,947 | SH |
| 48 | CUSTOMERS BANCORP INC | CUBI | 23204G100 | $1.8M | 0.23% | 23,000 | SH |
| 49 | GDS HLDGS LTD | GDS | 36165L108 | $1.8M | 0.23% | 60,000 | SH |
| 50 | EVEREST GROUP LTD | EG | G3223R108 | $1.8M | 0.22% | 5,000 | SH |
Filing History
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-06-30 | 2026-07-28 | $795.1M | 194 | 0001214659-26-009081 |
| 2026-03-31 | 2026-05-07 | $692.2M | 197 | 0001214659-26-005743 |
| 2025-12-31 | 2026-01-30 | $665.8M | 193 | 0001214659-26-000986 |
Filer Information
Address
1400 CENTREPARK BLVD, SUITE 950WEST PALM BEACH, FL 33401
Phone
(561) 459-2946
Filing Manager
Harbor Advisors LLC
West Palm Beach, FL
Signatory
JACK (SHIAUJIE) FU
MANAGER