Institutional Manager · CIK 0001730580
Harbor Island Capital LLC
Topsfield, MA · File #028-18325
Latest AUM
$260.8M
Positions
15
Top-10 Concentration
84.6%
Filings
9
Portfolio Value Over Time
2024-03
2024-06
2024-09
2024-12
2025-03
2025-06
2025-09
2025-12
Biggest QoQ Changes
Ranked by conviction flow (share change × current price) so mark-to-market moves don't dominate. Price effect column shows how much of the $ change was just the stock moving.
| Action | Issuer | Ticker / CUSIP | Δ Shares | Flow ($) | Price Effect |
|---|---|---|---|---|---|
| REDUCE | LAM RESEARCH CORP | LRCX | -29,837 | -$5.1M | +$8.6M |
| ADD | COMCAST CORP NEW | CCZ | +170,000 | +$5.1M | -$474,913 |
| REDUCE | APPLIED MATLS INC | 038222105 | -14,103 | -$3.6M | +$7.5M |
| ADD | NIKE INC | NKE | +47,840 | +$3.0M | -$897,160 |
| REDUCE | APPLE INC | AAPL | 0 | $0 | +$1.4M |
| REDUCE | BANK AMERICA CORP | 060505104 | 0 | $0 | +$497,795 |
| REDUCE | CISCO SYS INC | CSCO | 0 | $0 | +$1.8M |
| REDUCE | EAGLE MATLS INC | 26969P108 | 0 | $0 | -$1.1M |
| REDUCE | GATX CORP | GATX | 0 | $0 | -$433,659 |
| REDUCE | HP INC | HPQ | 0 | $0 | -$1.5M |
Sector Allocation
Filing History
- 13F HOLDINGS REPORTQ/E Dec 202515 pos · $260.8M
- 13F HOLDINGS REPORTQ/E Sep 202515 pos · $233.7M
- 13F HOLDINGS REPORTQ/E Jun 202515 pos · $213.1M
- 13F HOLDINGS REPORTQ/E Mar 202515 pos · $209.0M
- 13F HOLDINGS REPORTQ/E Dec 202415 pos · $209.0M
- 13F HOLDINGS REPORTQ/E Sep 202415 pos · $211.4M
- 13F HOLDINGS REPORTQ/E Jun 202415 pos · $232.2M
- 13F HOLDINGS REPORTQ/E Mar 202415 pos · $218.3M
- 13F HOLDINGS REPORTQ/E Dec 202315 pos · $173.1M
Top 15 Holdings — Dec 2025
| # | Issuer | Ticker | Shares | Value | % of Portfolio |
|---|---|---|---|---|---|
| 1 | LAM RESEARCH CORP | LRCX | 200,963 | $34.4M | 13.19% |
| 2 | APPLIED MATLS INC | 038222105 | 129,527 | $33.3M | 12.76% |
| 3 | WARNER BROS DISCOVERY INC | WBD | 981,390 | $28.3M | 10.84% |
| 4 | WELLS FARGO CO NEW | 949746101 | 254,192 | $23.7M | 9.08% |
| 5 | APPLE INC | AAPL | 78,561 | $21.4M | 8.19% |
| 6 | MICROSOFT CORP | MSFT | 38,524 | $18.6M | 7.14% |
| 7 | KLA CORP | KLAC | 13,596 | $16.5M | 6.33% |
| 8 | CISCO SYS INC | CSCO | 205,951 | $15.9M | 6.08% |
| 9 | COMCAST CORP NEW | CCZ | 480,401 | $14.4M | 5.51% |
| 10 | GATX CORP | GATX | 83,396 | $14.1M | 5.42% |
| 11 | NIKE INC | NKE | 196,870 | $12.5M | 4.81% |
| 12 | EAGLE MATLS INC | 26969P108 | 42,920 | $8.9M | 3.40% |
| 13 | BANK AMERICA CORP | 060505104 | 145,981 | $8.0M | 3.08% |
| 14 | HP INC | HPQ | 295,406 | $6.6M | 2.52% |
| 15 | INTEL CORP | INTC | 115,051 | $4.2M | 1.63% |