AI Portfolio Summary
In 2026 Q1, Harbor Advisors LLC maintained a portfolio of 202 distinct positions. They heavily accumulated shares in MICRON TECHNOLOGY IN, increasing their position by 5.2%. The fund also reduced its exposure to CHARTER COMMUNICATIO by 45.2%.
Total Positions
202
Quarter
2026 Q1
Top Holding
EQIX (33.9%)
Top 10 Concentration
66.2%
Turnover Rate
23.4%
Sector HHI
0.18
Items per page:
Showing 1-50 of 202
| Stock | History | Sector / Type | Port % | Prev % | Rank / Prev | Conviction | Change | % Change | Influence | Shares | Mkt Value | Avg Cost | Price Held | 1st Owned | Source | Source Date | Date Reported |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
EQIX
EQUINIX INC
|
Real Estate | 33.88% | 29.09% |
#1
Prev: #1
|
6.5 | -13,550 | -5.4% |
P
S
|
239,240 | $234,512,618 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
GOOGL
ALPHABET INC
|
Communication Services | 6.05% | 7.31% |
#2
Prev: #2
|
4.4 | -10,000 | -6.4% |
P
S
|
145,600 | $41,868,736 | 2017 Q2 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
AAPL
APPLE INC
|
Technology | 5.44% | 6.06% |
#3
Prev: #3
|
4.2 | no change | no change |
P
S
|
148,400 | $37,662,436 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
AMZN
AMAZON COM INC
|
Consumer Cyclical | 4.61% | 5.31% |
#4
Prev: #4
|
3.3 | no change | no change |
P
S
|
153,200 | $31,906,964 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
NVDA
NVIDIA CORPORAT...
|
Technology | 4.54% | 5.04% |
#5
Prev: #5
|
3.3 | no change | no change |
P
S
|
180,000 | $31,392,000 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
CNQ
CANADIAN NAT RE...
|
Energy | 3.52% | 2.54% |
#6
Prev: #6
|
2.4 | no change | no change |
P
S
|
499,800 | $24,355,254 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
MU
MICRON TECHNOLO...
|
Technology | 2.49% | 2.08% |
#7
1
Prev: #8
|
3.0 | 2,500 | 5.2% |
P
S
|
51,000 | $17,229,840 | 2017 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
FTAI
FTAI AVIATION L...
|
Industrials | 2.02% | 1.69% |
#8
3
Prev: #11
|
1.8 | no change | no change |
P
S
|
57,000 | $13,965,000 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
MA
MASTERCARD INCO...
|
Financial Services | 1.88% | 2.23% |
#9
2
Prev: #7
|
1.8 | no change | no change |
P
S
|
26,000 | $12,991,160 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
IBKR
INTERACTIVE BRO...
|
Financial Services | 1.81% | 1.80% |
#10
Prev: #10
|
1.7 | no change | no change |
P
S
|
186,832 | $12,530,822 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
MSFT
MICROSOFT CORP
|
Technology | 1.42% | 1.89% |
#11
2
Prev: #9
|
1.1 | 500 | 1.9% |
P
S
|
26,500 | $9,809,505 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
FERG
FERGUSON ENTERP...
|
Industrials | 1.39% | 1.38% |
#12
Prev: #12
|
1.6 | no change | no change |
P
S
|
41,255 | $9,623,141 | 2024 Q3 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
META
META PLATFORMS ...
|
Communication Services | 1.14% | 1.37% |
#13
Prev: #13
|
1.5 | no change | no change |
P
S
|
13,800 | $7,895,394 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
NTB
BANK OF N T BUT...
|
Financial Services | 1.10% | 1.16% |
#14
1
Prev: #15
|
0.9 | -10,500 | -6.8% |
P
S
|
144,908 | $7,604,772 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
JPM
JPMORGAN CHASE ...
|
Financial Services | 1.03% | 1.17% |
#15
1
Prev: #14
|
1.4 | no change | no change |
P
S
|
24,148 | $7,103,376 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
SPGI
S&P GLOBAL INC
|
Financial Services | 0.84% | 1.07% |
#16
Prev: #16
|
1.3 | no change | no change |
P
S
|
13,667 | $5,813,122 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
PJT
PJT PARTNERS IN...
|
Financial Services | 0.84% | 1.04% |
#17
Prev: #17
|
1.3 | no change | no change |
P
S
|
41,519 | $5,801,035 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
GOOG
ALPHABET INC
|
Communication Services | 0.83% | 0.94% |
#18
Prev: #18
|
1.3 | no change | no change |
P
S
|
20,000 | $5,737,200 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
NUE
NUCOR CORP
|
Basic Materials | 0.68% | 0.69% |
#19
1
Prev: #20
|
1.3 | no change | no change |
P
S
|
27,992 | $4,733,447 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
DLR
DIGITAL RLTY TR...
|
Real Estate | 0.67% | 0.59% |
#20
5
Prev: #25
|
1.3 | no change | no change |
P
S
|
25,552 | $4,604,726 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
EVR
EVERCORE INC
|
Financial Services | 0.65% | 0.77% |
#21
2
Prev: #19
|
1.3 | no change | no change |
P
S
|
15,000 | $4,477,650 | 2017 Q3 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
TMUS
T-MOBILE US INC
|
Communication Services | 0.63% | 0.63% |
#22
1
Prev: #23
|
1.3 | no change | no change |
P
S
|
20,650 | $4,337,120 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
WMT
WALMART INC
|
Consumer Defensive | 0.59% | 0.55% |
#23
3
Prev: #26
|
1.2 | no change | no change |
P
S
|
33,000 | $4,101,240 | 2017 Q3 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
BLK
BLACKROCK INC
|
Financial Services | 0.55% | 0.63% |
#24
2
Prev: #22
|
1.2 | no change | no change |
P
S
|
3,924 | $3,773,750 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
EOG
EOG RES INC
|
Energy | 0.54% | 0.41% |
#25
6
Prev: #31
|
1.2 | no change | no change |
P
S
|
25,900 | $3,744,363 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
HLI
HOULIHAN LOKEY ...
|
Financial Services | 0.52% | 0.65% |
#26
5
Prev: #21
|
1.2 | no change | no change |
P
S
|
25,000 | $3,590,500 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
MCO
MOODYS CORP
|
Financial Services | 0.50% | 0.61% |
#27
3
Prev: #24
|
1.2 | no change | no change |
P
S
|
8,000 | $3,490,000 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
NBIS
NEBIUS GROUP N....
|
Communication Services | 0.41% | 0.35% |
#28
8
Prev: #36
|
1.2 | no change | no change |
P
S
|
27,600 | $2,863,776 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
MLM
MARTIN MARIETTA...
|
Basic Materials | 0.38% | 0.42% |
#29
1
Prev: #30
|
1.2 | no change | no change |
P
S
|
4,500 | $2,649,060 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
MCB
METROPOLITAN BK...
|
Financial Services | 0.38% | 0.36% |
#30
4
Prev: #34
|
1.2 | no change | no change |
P
S
|
31,500 | $2,623,635 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
CVX
CHEVRON CORPORA...
|
Energy | 0.38% | 0.29% |
#31
16
Prev: #47
|
1.2 | no change | no change |
P
S
|
12,572 | $2,601,147 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
CRWD
CROWDSTRIKE HLD...
|
Technology | 0.35% | 0.44% |
#32
4
Prev: #28
|
1.1 | no change | no change |
P
S
|
6,250 | $2,440,063 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
DHR
DANAHER CORP DE...
|
Healthcare | 0.34% | 0.43% |
#33
4
Prev: #29
|
1.1 | no change | no change |
P
S
|
12,505 | $2,370,948 | 2017 Q1 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
AKAM
AKAMAI TECHNOLO...
|
Technology | 0.33% | 0.26% |
#34
19
Prev: #53
|
1.1 | no change | no change |
P
S
|
20,000 | $2,297,000 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
FOX
FOX CORP
|
Communication Services | 0.32% | 0.40% |
#35
3
Prev: #32
|
1.1 | no change | no change |
P
S
|
41,265 | $2,191,224 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
PNC
PNC FINL SVCS G...
|
Financial Services | 0.31% | 0.33% |
#36
4
Prev: #40
|
1.1 | no change | no change |
P
S
|
10,444 | $2,173,292 | 2018 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
HLT
HILTON WORLDWID...
|
Consumer Cyclical | 0.31% | 0.31% |
#37
8
Prev: #45
|
1.1 | no change | no change |
P
S
|
7,133 | $2,169,003 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
EFX
EQUIFAX INC
|
Industrials | 0.31% | 0.39% |
#38
5
Prev: #33
|
1.1 | no change | no change |
P
S
|
12,000 | $2,160,840 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
FBK
FB FINL CORP
|
Financial Services | 0.31% | 0.34% |
#39
Prev: #39
|
1.1 | no change | no change |
P
S
|
40,799 | $2,119,100 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
CTRA
COTERRA ENERGY ...
|
Energy | 0.30% | 0.24% |
#40
18
Prev: #58
|
1.1 | no change | no change |
P
S
|
60,043 | $2,109,911 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
GE
GE AEROSPACE
|
Industrials | 0.29% | 0.32% |
#41
1
Prev: #42
|
1.1 | no change | no change |
P
S
|
7,000 | $1,986,390 | 2017 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
GDS
GDS HLDGS LTD
|
Technology | 0.28% | 0.10% |
#42
60
Prev: #102
|
3.1 | 27,500 | 137.5% |
P
S
|
47,500 | $1,913,775 | 2025 Q3 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
CHTR
CHARTER COMMUNI...
|
Communication Services | 0.27% | 0.50% |
#43
16
Prev: #27
|
0.1 | -7,198 | -45.2% |
P
S
|
8,744 | $1,887,655 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
AJG
GALLAGHER ARTHU...
|
Financial Services | 0.26% | 0.33% |
#44
3
Prev: #41
|
1.1 | no change | no change |
P
S
|
8,375 | $1,813,858 | 2023 Q3 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
HD
HOME DEPOT INC
|
Consumer Cyclical | 0.26% | 0.28% |
#45
4
Prev: #49
|
1.1 | no change | no change |
P
S
|
5,500 | $1,808,895 | 2017 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
APO
APOLLO GLOBAL M...
|
Financial Services | 0.26% | 0.35% |
#46
9
Prev: #37
|
1.1 | no change | no change |
P
S
|
15,947 | $1,776,926 | 2022 Q1 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
BPOP
POPULAR INC
|
Financial Services | 0.25% | 0.24% |
#47
10
Prev: #57
|
1.1 | no change | no change |
P
S
|
13,000 | $1,744,210 | 2016 Q4 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
EG
EVEREST GROUP L...
|
Financial Services | 0.24% | 0.25% |
#48
7
Prev: #55
|
1.1 | no change | no change |
P
S
|
5,000 | $1,634,250 | 2017 Q3 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
PLTR
PALANTIR TECHNO...
|
Technology | 0.23% | 0.29% |
#49
3
Prev: #46
|
1.1 | no change | no change |
P
S
|
11,000 | $1,609,080 | 2023 Q2 | 13F Filing | 2026-03-31 | 2026-05-07 | |||
|
PANW
PALO ALTO NETWO...
|
Technology | 0.23% | 0.35% |
#50
12
Prev: #38
|
0.1 | -2,500 | -20.0% |
P
S
|
10,000 | $1,603,200 | 2023 Q3 | 13F Filing | 2026-03-31 | 2026-05-07 |
Showing 1-50 of 202 holdings