Filed: 11/12/2025ACC: 0001214659-25-016246
📋 What this filing means
HARBOR ADVISORS LLC filed this quarterly 13F‑HR report disclosing 190 equity positions with a total reported market value of $648.37M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
190
Positions
$648.37M
Total AUM (reported)
4.22M
Total Shares
Allocation by class
COM$474.02M73.1%
CL A$45.06M7.0%
CAP STK CL A$37.83M5.8%
COM CL A$24.28M3.7%
SHS$11.42M1.8%
COMMON STOCK NEW$9.27M1.4%
COM NEW$9.00M1.4%
Portfolio Concentration
Top 3$273.61M42.2%
4–10$134.15M20.7%
11–25$92.30M14.2%
Rest$148.32M22.9%
Top 3 weight
42.2%
Top 10 weight
62.9%
Voting Authority Distribution
Total shares with voting rights: 4.22M
Sole
Full voting authority
4.22M
shares
% of voting shares100.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
0.00
shares
% of voting shares0.0%
Investment Discretion (by position count)
Sole190
Shared0
Other0
Dominant voting typeSole · 100.0% of voting shares
Institutional Holdings190
Rows:
EQUINIX INC
SOLEShares252.79K
TypeSH
Market value$198.00M
30.54%
Sole
252.79K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares155.60K
TypeSH
Market value$37.83M
5.83%
Sole
155.60K
Shared
0.00
None
0.00
APPLE INC
SOLEShares148.40K
TypeSH
Market value$37.79M
5.83%
Sole
148.40K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares154.70K
TypeSH
Market value$33.97M
5.24%
Sole
154.70K
Shared
0.00
None
0.00
NVIDIA CORPORATION
SOLEShares180K
TypeSH
Market value$33.58M
5.18%
Sole
180K
Shared
0.00
None
0.00
CANADIAN NAT RES LTD
SOLEShares499.80K
TypeSH
Market value$15.97M
2.46%
Sole
499.80K
Shared
0.00
None
0.00
MASTERCARD INCORPORATED
SOLEShares26K
TypeSH
Market value$14.79M
2.28%
Sole
26K
Shared
0.00
None
0.00
MICROSOFT CORP
SOLEShares26K
TypeSH
Market value$13.47M
2.08%
Sole
26K
Shared
0.00
None
0.00
INTERACTIVE BROKERS GROUP IN
SOLEShares186.83K
TypeSH
Market value$12.86M
1.98%
Sole
186.83K
Shared
0.00
None
0.00
FTAI AVIATION LTD
SOLEShares57K
TypeSH
Market value$9.51M
1.47%
Sole
57K
Shared
0.00
None
0.00
META PLATFORMS INC
SOLEShares12.80K
TypeSH
Market value$9.40M
1.45%
Sole
12.80K
Shared
0.00
None
0.00
FERGUSON ENTERPRISES INC
SOLEShares41.26K
TypeSH
Market value$9.27M
1.43%
Sole
41.26K
Shared
0.00
None
0.00
MICRON TECHNOLOGY INC
SOLEShares48.50K
TypeSH
Market value$8.12M
1.25%
Sole
48.50K
Shared
0.00
None
0.00
JPMORGAN CHASE & CO.
SOLEShares24.15K
TypeSH
Market value$7.62M
1.17%
Sole
24.15K
Shared
0.00
None
0.00
PJT PARTNERS INC
SOLEShares41.52K
TypeSH
Market value$7.38M
1.14%
Sole
41.52K
Shared
0.00
None
0.00
BANK OF NT BUTTERFIELD&SON L
SOLEShares155.41K
TypeSH
Market value$6.67M
1.03%
Sole
155.41K
Shared
0.00
None
0.00
S&P GLOBAL INC
SOLEShares13.67K
TypeSH
Market value$6.65M
1.03%
Sole
13.67K
Shared
0.00
None
0.00
HOULIHAN LOKEY INC
SOLEShares25K
TypeSH
Market value$5.13M
0.79%
Sole
25K
Shared
0.00
None
0.00
EVERCORE INC
SOLEShares15K
TypeSH
Market value$5.06M
0.78%
Sole
15K
Shared
0.00
None
0.00
T-MOBILE US INC
SOLEShares20.65K
TypeSH
Market value$4.94M
0.76%
Sole
20.65K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares20K
TypeSH
Market value$4.87M
0.75%
Sole
20K
Shared
0.00
None
0.00
BLACKROCK INC
SOLEShares3.92K
TypeSH
Market value$4.57M
0.71%
Sole
3.92K
Shared
0.00
None
0.00
DIGITAL RLTY TR INC
SOLEShares25.55K
TypeSH
Market value$4.42M
0.68%
Sole
25.55K
Shared
0.00
None
0.00
CHARTER COMMUNICATIONS INC N
SOLEShares15.94K
TypeSH
Market value$4.39M
0.68%
Sole
15.94K
Shared
0.00
None
0.00
MOODYS CORP
SOLEShares8K
TypeSH
Market value$3.81M
0.59%
Sole
8K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
EQUINIX INCSOLE | COM | 252.79K | SH | $198.00M 30.54% | 252.79K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL A | 155.60K | SH | $37.83M 5.83% | 155.60K | 0.00 | 0.00 |
APPLE INCSOLE | COM | 148.40K | SH | $37.79M 5.83% | 148.40K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 154.70K | SH | $33.97M 5.24% | 154.70K | 0.00 | 0.00 |
NVIDIA CORPORATIONSOLE | COM | 180K | SH | $33.58M 5.18% | 180K | 0.00 | 0.00 |
CANADIAN NAT RES LTDSOLE | COM | 499.80K | SH | $15.97M 2.46% | 499.80K | 0.00 | 0.00 |
MASTERCARD INCORPORATEDSOLE | CL A | 26K | SH | $14.79M 2.28% | 26K | 0.00 | 0.00 |
MICROSOFT CORPSOLE | COM | 26K | SH | $13.47M 2.08% | 26K | 0.00 | 0.00 |
INTERACTIVE BROKERS GROUP INSOLE | COM CL A | 186.83K | SH | $12.86M 1.98% | 186.83K | 0.00 | 0.00 |
FTAI AVIATION LTDSOLE | SHS | 57K | SH | $9.51M 1.47% | 57K | 0.00 | 0.00 |
META PLATFORMS INCSOLE | CL A | 12.80K | SH | $9.40M 1.45% | 12.80K | 0.00 | 0.00 |
FERGUSON ENTERPRISES INCSOLE | COMMON STOCK NEW | 41.26K | SH | $9.27M 1.43% | 41.26K | 0.00 | 0.00 |
MICRON TECHNOLOGY INCSOLE | COM | 48.50K | SH | $8.12M 1.25% | 48.50K | 0.00 | 0.00 |
JPMORGAN CHASE & CO.SOLE | COM | 24.15K | SH | $7.62M 1.17% | 24.15K | 0.00 | 0.00 |
PJT PARTNERS INCSOLE | COM CL A | 41.52K | SH | $7.38M 1.14% | 41.52K | 0.00 | 0.00 |
BANK OF NT BUTTERFIELD&SON LSOLE | SHS NEW | 155.41K | SH | $6.67M 1.03% | 155.41K | 0.00 | 0.00 |
S&P GLOBAL INCSOLE | COM | 13.67K | SH | $6.65M 1.03% | 13.67K | 0.00 | 0.00 |
HOULIHAN LOKEY INCSOLE | CL A | 25K | SH | $5.13M 0.79% | 25K | 0.00 | 0.00 |
EVERCORE INCSOLE | CLASS A | 15K | SH | $5.06M 0.78% | 15K | 0.00 | 0.00 |
T-MOBILE US INCSOLE | COM | 20.65K | SH | $4.94M 0.76% | 20.65K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL C | 20K | SH | $4.87M 0.75% | 20K | 0.00 | 0.00 |
BLACKROCK INCSOLE | COM | 3.92K | SH | $4.57M 0.71% | 3.92K | 0.00 | 0.00 |
DIGITAL RLTY TR INCSOLE | COM | 25.55K | SH | $4.42M 0.68% | 25.55K | 0.00 | 0.00 |
CHARTER COMMUNICATIONS INC NSOLE | CL A | 15.94K | SH | $4.39M 0.68% | 15.94K | 0.00 | 0.00 |
MOODYS CORPSOLE | COM | 8K | SH | $3.81M 0.59% | 8K | 0.00 | 0.00 |
Page 1 of 8
…