Filed: 8/13/2025ACC: 0001214659-25-011966
📋 What this filing means
HARBOR ADVISORS LLC filed this quarterly 13F‑HR report disclosing 190 equity positions with a total reported market value of $611.05M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
190
Positions
$611.05M
Total AUM (reported)
4.21M
Total Shares
Allocation by class
COM$457.88M74.9%
CL A$46.11M7.5%
CAP STK CL A$27.42M4.5%
COM CL A$21.12M3.5%
SHS$9.16M1.5%
COMMON STOCK NEW$8.98M1.5%
COM NEW$7.87M1.3%
Portfolio Concentration
Top 3$265.47M43.4%
4–10$118.90M19.5%
11–25$85.65M14.0%
Rest$141.02M23.1%
Top 3 weight
43.4%
Top 10 weight
62.9%
Voting Authority Distribution
Total shares with voting rights: 4.21M
Sole
Full voting authority
4.21M
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$201.09M
32.91%
Sole
252.79K
Shared
0.00
None
0.00
AMAZON COM INC
SOLEShares154.70K
TypeSH
Market value$33.94M
5.55%
Sole
154.70K
Shared
0.00
None
0.00
APPLE INC
SOLEShares148.40K
TypeSH
Market value$30.45M
4.98%
Sole
148.40K
Shared
0.00
None
0.00
NVIDIA CORPORATION
SOLEShares180K
TypeSH
Market value$28.44M
4.65%
Sole
180K
Shared
0.00
None
0.00
ALPHABET INC
SOLEShares155.60K
TypeSH
Market value$27.42M
4.49%
Sole
155.60K
Shared
0.00
None
0.00
CANADIAN NAT RES LTD
SOLEShares499.80K
TypeSH
Market value$15.69M
2.57%
Sole
499.80K
Shared
0.00
None
0.00
MASTERCARD INCORPORATED
SOLEShares26K
TypeSH
Market value$14.61M
2.39%
Sole
26K
Shared
0.00
None
0.00
MICROSOFT CORP
SOLEShares26K
TypeSH
Market value$12.93M
2.12%
Sole
26K
Shared
0.00
None
0.00
INTERACTIVE BROKERS GROUP IN
SOLEShares186.83K
TypeSH
Market value$10.35M
1.69%
Sole
186.83K
Shared
0.00
None
0.00
META PLATFORMS INC
SOLEShares12.80K
TypeSH
Market value$9.45M
1.55%
Sole
12.80K
Shared
0.00
None
0.00
FERGUSON ENTERPRISES INC
SOLEShares41.26K
TypeSH
Market value$8.98M
1.47%
Sole
41.26K
Shared
0.00
None
0.00
S&P GLOBAL INC
SOLEShares13.67K
TypeSH
Market value$7.21M
1.18%
Sole
13.67K
Shared
0.00
None
0.00
JPMORGAN CHASE & CO.
SOLEShares24.15K
TypeSH
Market value$7.00M
1.15%
Sole
24.15K
Shared
0.00
None
0.00
BANK OF NT BUTTERFIELD&SON L
SOLEShares155.41K
TypeSH
Market value$6.88M
1.13%
Sole
155.41K
Shared
0.00
None
0.00
PJT PARTNERS INC
SOLEShares41.52K
TypeSH
Market value$6.85M
1.12%
Sole
41.52K
Shared
0.00
None
0.00
FTAI AVIATION LTD
SOLEShares57K
TypeSH
Market value$6.56M
1.07%
Sole
57K
Shared
0.00
None
0.00
CHARTER COMMUNICATIONS INC N
SOLEShares15.94K
TypeSH
Market value$6.52M
1.07%
Sole
15.94K
Shared
0.00
None
0.00
MICRON TECHNOLOGY INC
SOLEShares48.50K
TypeSH
Market value$5.98M
0.98%
Sole
48.50K
Shared
0.00
None
0.00
T-MOBILE US INC
SOLEShares20.65K
TypeSH
Market value$4.92M
0.81%
Sole
20.65K
Shared
0.00
None
0.00
HOULIHAN LOKEY INC
SOLEShares25K
TypeSH
Market value$4.50M
0.74%
Sole
25K
Shared
0.00
None
0.00
DIGITAL RLTY TR INC
SOLEShares25.55K
TypeSH
Market value$4.45M
0.73%
Sole
25.55K
Shared
0.00
None
0.00
BLACKROCK INC
SOLEShares3.92K
TypeSH
Market value$4.12M
0.67%
Sole
3.92K
Shared
0.00
None
0.00
EVERCORE INC
SOLEShares15K
TypeSH
Market value$4.05M
0.66%
Sole
15K
Shared
0.00
None
0.00
MOODYS CORP
SOLEShares8K
TypeSH
Market value$4.01M
0.66%
Sole
8K
Shared
0.00
None
0.00
NUCOR CORP
SOLEShares27.99K
TypeSH
Market value$3.63M
0.59%
Sole
27.99K
Shared
0.00
None
0.00
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
EQUINIX INCSOLE | COM | 252.79K | SH | $201.09M 32.91% | 252.79K | 0.00 | 0.00 |
AMAZON COM INCSOLE | COM | 154.70K | SH | $33.94M 5.55% | 154.70K | 0.00 | 0.00 |
APPLE INCSOLE | COM | 148.40K | SH | $30.45M 4.98% | 148.40K | 0.00 | 0.00 |
NVIDIA CORPORATIONSOLE | COM | 180K | SH | $28.44M 4.65% | 180K | 0.00 | 0.00 |
ALPHABET INCSOLE | CAP STK CL A | 155.60K | SH | $27.42M 4.49% | 155.60K | 0.00 | 0.00 |
CANADIAN NAT RES LTDSOLE | COM | 499.80K | SH | $15.69M 2.57% | 499.80K | 0.00 | 0.00 |
MASTERCARD INCORPORATEDSOLE | CL A | 26K | SH | $14.61M 2.39% | 26K | 0.00 | 0.00 |
MICROSOFT CORPSOLE | COM | 26K | SH | $12.93M 2.12% | 26K | 0.00 | 0.00 |
INTERACTIVE BROKERS GROUP INSOLE | COM CL A | 186.83K | SH | $10.35M 1.69% | 186.83K | 0.00 | 0.00 |
META PLATFORMS INCSOLE | CL A | 12.80K | SH | $9.45M 1.55% | 12.80K | 0.00 | 0.00 |
FERGUSON ENTERPRISES INCSOLE | COMMON STOCK NEW | 41.26K | SH | $8.98M 1.47% | 41.26K | 0.00 | 0.00 |
S&P GLOBAL INCSOLE | COM | 13.67K | SH | $7.21M 1.18% | 13.67K | 0.00 | 0.00 |
JPMORGAN CHASE & CO.SOLE | COM | 24.15K | SH | $7.00M 1.15% | 24.15K | 0.00 | 0.00 |
BANK OF NT BUTTERFIELD&SON LSOLE | SHS NEW | 155.41K | SH | $6.88M 1.13% | 155.41K | 0.00 | 0.00 |
PJT PARTNERS INCSOLE | COM CL A | 41.52K | SH | $6.85M 1.12% | 41.52K | 0.00 | 0.00 |
FTAI AVIATION LTDSOLE | SHS | 57K | SH | $6.56M 1.07% | 57K | 0.00 | 0.00 |
CHARTER COMMUNICATIONS INC NSOLE | CL A | 15.94K | SH | $6.52M 1.07% | 15.94K | 0.00 | 0.00 |
MICRON TECHNOLOGY INCSOLE | COM | 48.50K | SH | $5.98M 0.98% | 48.50K | 0.00 | 0.00 |
T-MOBILE US INCSOLE | COM | 20.65K | SH | $4.92M 0.81% | 20.65K | 0.00 | 0.00 |
HOULIHAN LOKEY INCSOLE | CL A | 25K | SH | $4.50M 0.74% | 25K | 0.00 | 0.00 |
DIGITAL RLTY TR INCSOLE | COM | 25.55K | SH | $4.45M 0.73% | 25.55K | 0.00 | 0.00 |
BLACKROCK INCSOLE | COM | 3.92K | SH | $4.12M 0.67% | 3.92K | 0.00 | 0.00 |
EVERCORE INCSOLE | CLASS A | 15K | SH | $4.05M 0.66% | 15K | 0.00 | 0.00 |
MOODYS CORPSOLE | COM | 8K | SH | $4.01M 0.66% | 8K | 0.00 | 0.00 |
NUCOR CORPSOLE | COM | 27.99K | SH | $3.63M 0.59% | 27.99K | 0.00 | 0.00 |
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