Q2 2026 13F · SEC CIK 1730580
Harbor Island Capital LLC
Wealth managerFiled 2026-07-30 for Q2 2026. Open the filing ↗ · All SEC filings ↗
- Reported 13F value
- $375.6M
- Reported positions
- 16
- Top holdings a year, 3 yrs
- +31.1%
- Assets under management
- $277.6M
Harbor Island Capital LLC is a wealth manager that reported 16 positions worth $375.6M in its Q2 2026 13F, filed 2026-07-30. Its largest holdings were Applied Matls Inc (AMAT, 17.8%), Lam Research Corp (LRCX, 17.2%), Kla Corp (KLAC, 10.9%). A portfolio copying its top holdings returned 31.1% a year over the last 3 years, against 20.4% for the S&P 500.
Harbor Island Capital LLC holdings all 16 positions.
Weights are shares of the filer's total reported 13F value, compared with Q1 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.
| Stock | % of 13F value | Share change | Reported value |
|---|---|---|---|
| AMATApplied Matls Inc | 17.8% | -21.7% | $66.9M |
| LRCXLam Research Corp | 17.2% | -6.8% | $64.5M |
| KLACKla Corp | 10.9% | +900.0% | $41.0M |
| WBDWarner Bros Discovery Inc | 6.6% | -4.5% | $24.7M |
| CSCOCisco Sys Inc | 6.4% | +0.0% | $24.2M |
| AAPLApple Inc | 6.1% | +0.0% | $22.7M |
| WFCWells Fargo Co New | 5.6% | +0.0% | $21.0M |
| INTCIntel Corp | 4.3% | +0.0% | $16.1M |
| MSFTMicrosoft Corp | 4.1% | +6.0% | $15.2M |
| NKENike Inc Cl B | 4.0% | +48.8% | $14.8M |
| GATXGatx Corp | 3.9% | +0.0% | $14.8M |
| CMCSAComcast Corp New | 3.6% | +14.4% | $13.5M |
| EXPEagle Materials Inc | 3.5% | +0.0% | $13.3M |
| BACBank of Amer Corp | 2.2% | +0.0% | $8.3M |
| VSNTVVersant Media Group Inc | 2.1% | +7.2% | $8.0M |
| HPQHp Inc | 1.7% | +0.0% | $6.5M |
What Harbor Island Capital LLC bought and sold in Q2 2026, against Q1 2026.
New positions
No new positions among the largest holdings.
Added to
- KLAC Kla Corp+900.0% shares
- NKE Nike Inc Cl B+48.8% shares
- CMCSA Comcast Corp New+14.4% shares
- VSNTV Versant Media Group Inc+7.2% shares
- MSFT Microsoft Corp+6.0% shares
Reduced
- AMAT Applied Matls Inc-21.7% shares
- LRCX Lam Research Corp-6.8% shares
Sold out
Nothing sold out.
Share counts compared with the Q1 2026 13F; a split also changes share counts.
How the holdings did against the S&P 500.
- 1 year
- +75.3% /yr
- S&P 500 +20.1%
- 3 years
- +31.1% /yr
- S&P 500 +20.4%
- 5 years
- +18.6% /yr
- S&P 500 +11.6%
A portfolio of the filer's 20 largest 13F positions, weighted by value and rebuilt each quarter on the day the filing became public. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.
Reported 13F value by quarter.
| Quarter | 13F value | Positions |
|---|---|---|
| Q2 2026 | $375.6M | 16 |
| Q1 2026 | $269.2M | 16 |
| Q4 2025 | $260.8M | 15 |
| Q3 2025 | $233.7M | 15 |
| Q2 2025 | $213.1M | 15 |
| Q1 2025 | $201.9M | 16 |
| Q4 2024 | $209.0M | 15 |
| Q3 2024 | $211.4M | 15 |
| Q2 2024 | $232.2M | 15 |
| Q1 2024 | $218.3M | 15 |
| Q4 2023 | $201.6M | 15 |
| Q3 2023 | $173.1M | 15 |
Questions about Harbor Island Capital LLC's portfolio
What stocks does Harbor Island Capital LLC own?
Harbor Island Capital LLC's latest 13F, for Q2 2026 and filed Jul 30, 2026, lists 16 positions worth $375.6M. The largest are Applied Matls Inc (AMAT) at 17.8%, Lam Research Corp (LRCX) at 17.2%, Kla Corp (KLAC) at 10.9%, Warner Bros Discovery Inc (WBD) at 6.6% and Cisco Sys Inc (CSCO) at 6.4%.
What did Harbor Island Capital LLC buy last quarter?
In Q2 2026, Harbor Island Capital LLC added Kla Corp (KLAC) (+900.0% shares), Nike Inc Cl B (NKE) (+48.8% shares) and Comcast Corp New (CMCSA) (+14.4% shares), compared with its Q1 2026 filing.
What did Harbor Island Capital LLC sell last quarter?
In Q2 2026, Harbor Island Capital LLC Applied Matls Inc (AMAT) (-21.7% shares) and Lam Research Corp (LRCX) (-6.8% shares), compared with its Q1 2026 filing.
How has Harbor Island Capital LLC's portfolio performed?
A portfolio copying Harbor Island Capital LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +31.1% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +75.3% against +20.1%. Over 5 years: +18.6% a year against +11.6%.
When is Harbor Island Capital LLC's next 13F filing due?
13F filings are due 45 days after each quarter ends. Harbor Island Capital LLC's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.
How much money does Harbor Island Capital LLC manage?
Harbor Island Capital LLC reported $277.6M of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $375.6M.