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Harbor Advisors LLC

SEC CIK
0001687156
Latest filing
Jul 28, 2026

Holdings in Q4 2025

Holdings as of Dec 31, 2025, filed Jan 30, 2026. Long positions only; changes compare share counts with Q3 2025.

Institution overview
Positions
193
+3 vs. Q3 2025
Portfolio value
$665.8M
+$17.4M (+2.7%) vs. Q3 2025
Filed
Jan 30, 2026
SEC
Holdings of Harbor Advisors LLC in Q4 2025
SecurityClassSharesValue% of portfolioShare changeActionHistory
EQIXEquinix IncCOM252,790$193.7M29.1%00.0%UnchangedHistory
GOOGLAlphabet Inc.Stock155,600$48.7M7.3%00.0%UnchangedHistory
AAPLApple Inc.Stock148,400$40.3M6.1%00.0%UnchangedHistory
AMZNAmazon Com IncStock153,200$35.4M5.3%−1,500−1.0%ReducedHistory
NVDANVIDIA CorpStock180,000$33.6M5.0%00.0%UnchangedHistory
CNQCanadian Natural Resources LtdCOM499,800$16.9M2.5%00.0%UnchangedHistory
MAMastercard IncStock26,000$14.8M2.2%00.0%UnchangedHistory
MUMicron Technology IncStock48,500$13.8M2.1%00.0%UnchangedHistory
MSFTMicrosoft CorpStock26,000$12.6M1.9%00.0%UnchangedHistory
IBKRInteractive Brokers Group, Inc.Stock186,832$12.0M1.8%00.0%UnchangedHistory
FTAIFTAI Aviation Ltd.SHS57,000$11.2M1.7%00.0%UnchangedHistory
FERGFerguson Enterprises Inc.COMMON STOCK NEW41,255$9.18M1.4%00.0%UnchangedHistory
METAMeta Platforms, Inc.Stock13,800$9.11M1.4%+1,000+7.8%AddedHistory
JPMJPMorgan Chase & CoStock24,148$7.78M1.2%00.0%UnchangedHistory
NTBBank of N.T. Butterfield & Son LtdSHS NEW155,408$7.74M1.2%00.0%UnchangedHistory
SPGIS&P Global Inc.Stock13,667$7.14M1.1%00.0%UnchangedHistory
PJTPJT Partners Inc.COM CL A41,519$6.94M1.0%00.0%UnchangedHistory
GOOGAlphabet Inc.Stock20,000$6.28M0.9%00.0%UnchangedHistory
EVREvercore Inc.CLASS A15,000$5.10M0.8%00.0%UnchangedHistory
NUENucor CorpCOM27,992$4.57M0.7%00.0%UnchangedHistory
HLIHoulihan Lokey, Inc.CL A25,000$4.35M0.7%00.0%UnchangedHistory
BLKBlackRock, Inc.Stock3,924$4.20M0.6%00.0%UnchangedHistory
TMUST-Mobile US, Inc.Stock20,650$4.19M0.6%00.0%UnchangedHistory
MCOMoodys CorpStock8,000$4.09M0.6%00.0%UnchangedHistory
DLRDigital Realty Trust, Inc.COM25,552$3.95M0.6%00.0%UnchangedHistory
WMTWalmart Inc.Stock33,000$3.68M0.6%00.0%UnchangedHistory
CHTRCharter Communications, Inc.CL A15,942$3.33M0.5%00.0%UnchangedHistory
CRWDCrowdStrike Holdings, Inc.Stock6,250$2.93M0.4%00.0%UnchangedHistory
DHRDanaher CorpStock12,505$2.86M0.4%00.0%UnchangedHistory
MLMMartin Marietta Materials IncCOM4,500$2.80M0.4%00.0%UnchangedHistory
EOGEOG Resources IncStock25,900$2.72M0.4%00.0%UnchangedHistory
FOXFox CorpCL B COM41,265$2.68M0.4%00.0%UnchangedHistory
EFXEquifax IncCOM12,000$2.60M0.4%00.0%UnchangedHistory
MCBMetropolitan Bank Holding Corp.COM31,500$2.41M0.4%00.0%UnchangedHistory
ARESAres Management CorpCL A COM STK14,500$2.34M0.4%00.0%UnchangedHistory
NBISNebius Group N.V.Stock27,600$2.31M0.3%00.0%UnchangedHistory
APOApollo Global Management, Inc.COM15,947$2.31M0.3%00.0%UnchangedHistory
PANWPalo Alto Networks IncStock12,500$2.30M0.3%00.0%UnchangedHistory
FBKFB Financial CorpCOM40,799$2.28M0.3%00.0%UnchangedHistory
PNCPNC Financial Services Group, Inc.Stock10,444$2.18M0.3%00.0%UnchangedHistory
AJGArthur J. Gallagher & Co.COM8,375$2.17M0.3%00.0%UnchangedHistory
GEGeneral Electric CoStock7,000$2.16M0.3%00.0%UnchangedHistory
BXBlackstone Inc.COM13,700$2.11M0.3%00.0%UnchangedHistory
ADBEAdobe Inc.Stock6,000$2.10M0.3%00.0%UnchangedHistory
HLTHilton Worldwide Holdings Inc.COM7,133$2.05M0.3%00.0%UnchangedHistory
PLTRPalantir Technologies Inc.Stock11,000$1.96M0.3%00.0%UnchangedHistory
CVXChevron CorpStock12,572$1.92M0.3%00.0%UnchangedHistory
BROBrown & Brown, Inc.Stock24,000$1.91M0.3%00.0%UnchangedHistory
HDHome Depot, Inc.Stock5,500$1.89M0.3%00.0%UnchangedHistory
WFCWells Fargo & CompanyStock20,000$1.86M0.3%00.0%UnchangedHistory
FNFFidelity National Financial, Inc.COM SHS33,409$1.82M0.3%00.0%UnchangedHistory
CSGPCostar Group, Inc.COM26,560$1.79M0.3%+4,000+17.7%AddedHistory
AKAMAkamai Technologies IncCOM20,000$1.75M0.3%00.0%UnchangedHistory
TMOThermo Fisher Scientific Inc.Stock3,000$1.74M0.3%00.0%UnchangedHistory
EGEverest Group, Ltd.COM5,000$1.70M0.3%00.0%UnchangedHistory
CUBICustomers Bancorp, Inc.COM23,000$1.68M0.3%−6,000−20.7%ReducedHistory
BPOPPopular, Inc.COM NEW13,000$1.62M0.2%00.0%UnchangedHistory
CTRACoterra Energy Inc.Stock60,043$1.58M0.2%00.0%UnchangedHistory
OSGOctave Specialty Group IncCOM NEW196,382$1.53M0.2%00.0%UnchangedHistory
VVisa Inc.Stock4,000$1.40M0.2%00.0%UnchangedHistory
CPCanadian Pacific Kansas City LtdCOM18,746$1.38M0.2%00.0%UnchangedHistory
TTTrane Technologies plcSHS3,500$1.36M0.2%00.0%UnchangedHistory
RTXRTX CorpStock6,766$1.24M0.2%00.0%UnchangedHistory
URIUnited Rentals, Inc.COM1,500$1.21M0.2%00.0%UnchangedHistory
AVGOBroadcom Inc.Stock3,500$1.21M0.2%00.0%UnchangedHistory
WALWestern Alliance BancorporationCOM14,000$1.18M0.2%+5,000+55.6%AddedHistory
MSMorgan StanleyStock6,608$1.17M0.2%00.0%UnchangedHistory
ACGLArch Capital Group Ltd.Stock11,500$1.10M0.2%00.0%UnchangedHistory
FCNCAFirst Citizens Bancshares IncCL A512$1.10M0.2%00.0%UnchangedHistory
SNOWSnowflake Inc.Stock5,000$1.10M0.2%00.0%UnchangedHistory
CSXCSX CorpStock30,000$1.09M0.2%00.0%UnchangedHistory
ECHOEchoStar CORPCL A10,000$1.09M0.2%00.0%UnchangedHistory
LIILennox International IncCOM2,200$1.07M0.2%00.0%UnchangedHistory
BABAAlibaba Group Holding LtdADR7,000$1.03M0.2%+1,500+27.3%AddedHistory
MCMoelis & CoCL A14,800$1.02M0.2%00.0%UnchangedHistory
OZKBank OZKCOM21,455$987.4K0.1%00.0%UnchangedHistory
XOMExxonMobil Holdings CorpCOM8,057$969.6K0.1%00.0%UnchangedHistory
LLYEli Lilly & CoStock900$967.2K0.1%00.0%UnchangedHistory
CBRECbre Group, Inc.CL A6,000$964.7K0.1%00.0%UnchangedHistory
JEFJefferies Financial Group Inc.COM15,000$929.5K0.1%00.0%UnchangedHistory
LBRDKLiberty Broadband CorpCOM SER C18,674$907.6K0.1%00.0%UnchangedHistory
YUMCYum China Holdings, Inc.COM19,000$907.1K0.1%00.0%UnchangedHistory
LOWLowes Companies IncStock3,700$892.3K0.1%00.0%UnchangedHistory
AONAon plcCL A2,500$882.2K0.1%00.0%UnchangedHistory
COPConocoPhillipsStock9,272$868.0K0.1%00.0%UnchangedHistory
NSCNorfolk Southern CorpStock3,000$866.2K0.1%00.0%UnchangedHistory
AMDAdvanced Micro Devices IncStock4,000$856.6K0.1%00.0%UnchangedHistory
KDPKeurig Dr Pepper Inc.COM30,000$840.3K0.1%00.0%UnchangedHistory
MCKMcKesson CorpStock1,000$820.3K0.1%00.0%UnchangedHistory
GEVGE Vernova Inc.Stock1,250$817.0K0.1%00.0%UnchangedHistory
VRTVertiv Holdings CoCOM CL A5,000$810.0K0.1%00.0%UnchangedHistory
PFEPfizer IncStock31,962$795.9K0.1%00.0%UnchangedHistory
SLGSL Green Realty CorpCOM17,000$779.8K0.1%+17,000NewHistory
iShares Tr464287689RUSSELL 3000 ETF2,000$773.7K0.1%00.0%Unchanged–
FCNFti Consulting, IncCOM4,500$768.7K0.1%00.0%UnchangedHistory
BRK.ABerkshire Hathaway IncCL A1$754.8K0.1%00.0%UnchangedHistory
ZTSZoetis Inc.Stock5,976$751.9K0.1%00.0%UnchangedHistory
ASMLASML Holding NVADR700$748.9K0.1%00.0%UnchangedHistory
AXPAmerican Express CoStock2,000$739.9K0.1%00.0%UnchangedHistory
AMGAffiliated Managers Group, Inc.Stock2,500$720.7K0.1%00.0%UnchangedHistory

Sold out since Q3 2025 (10)

Positions held at the end of Q3 2025 that are gone from this filing.

Positions of Harbor Advisors LLC sold out since Q3 2025
SecurityClassShares in Q3 2025Value in Q3 2025% of portfolio in Q3 2025History
PNFPPinnacle Financial Partners, Inc.COM12,000$1.13M0.2%History
JNJJohnson & JohnsonStock2,304$427.2K0.1%History
PENNPENN Entertainment, Inc.COM12,000$231.1K<0.1%History
BMYBristol Myers Squibb CoStock5,000$225.5K<0.1%History
DELLDell Technologies Inc.Stock1,500$212.7K<0.1%History
WTWWillis Towers Watson PLCSHS605$209.0K<0.1%History
RBBRBB BancorpCOM10,000$187.6K<0.1%History
PLGOPelagos Insurance Capital LtdCOM10,000$181.5K<0.1%History
SLDESlide Insurance Holdings, Inc.COM10,000$157.8K<0.1%History
KURAKura Oncology, Inc.COM10,000$88.5K<0.1%History