Harbor Island Capital LLC

CIK

1730580

Location

Topsfield, MA

Portfolio Value

Small $155,441,071

Diversification

Diversified

Filing Date

Global Rank

#3,596 / 8,578 ▲ 186

Top Industry

Semiconductor Equipment & Materials 35.1%

3Y Alpha vs SPY

+8.7%

Period ended 3 months ago

Filed May 12, 2026 · 35d

25 quarters · since Mar 2020

Clone Performance

Jun 2023–Jun 2026 · vs SPY

Hypothetical growth of cloning every reported 13F position and rebalancing on each filing, indexed to the same start.

Cloned portfolio

+119.4%

SPY

+78.1%

Annualised alpha

+8.7%

Max drawdown

−26.1%

Estimate. 13F holdings are quarter-lagged and long-only, so the clone rebalances about 45 days after each period end — when the filing becomes public — and excludes options and short positions. Past performance does not predict future results.

Portfolio Concentration

16 positions · as of Mar 31, 2026 · Δ vs Dec 31, 2025

Top Position

15.0%

+1.8 pts

Top 5

52.5%

−1.7 pts

Top 10

81.6%

−2.9 pts

HHI

831

Diversified−16

Portfolio Trend

25 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Technology	57.7%	$155,441,071	8
Communication Services	17.9%	$48,105,054	3
Financial Services	10.2%	$27,352,798	2
Industrials	5.3%	$14,239,033	1
Consumer Cyclical	4.8%	$12,830,770	1
Basic Materials	4.2%	$11,207,293	1

Last Quarter's Activity

Export CSV

Mar 31, 2026 vs Dec 31, 2025

Added To

Positions the filer increased

2 positions

Ticker	Company	Δ Shares	Shares	Value
NKE	NIKE, Inc.	+46,045	242,915	$12,830,770
EXP	Eagle Materials Inc	+16,237	59,157	$11,207,293
No positions match the current search.

Trimmed

Positions the filer reduced

3 positions

Ticker	Company	Δ Shares	Shares	Value
LRCX	Lam Research Corp	−41,178	159,785	$34,139,663
AMAT	Applied Materials Inc /De	−11,465	118,062	$40,352,410
WBD	Warner Bros. Discovery, Inc.	−10,120	971,270	$26,671,074
No positions match the current search.

New Positions

Positions the filer opened this quarter

1 positions

Ticker	Company	Shares	Value	Open
VSNT	Versant Media Group, Inc.	206,420	$7,641,668
No positions match the current search.

Sold Out

Positions the filer fully exited

No qualifying positions this quarter.

Portfolio Positions

Compact Export CSV View 13F filing

8 positions · $155,441,071 total · Technology only · as of Mar 31, 2026

All sectors Basic Materials Communication Services Consumer Cyclical Financial Services Industrials Technology

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
AMAT	Applied Materials Inc /De Technology	Reduced	118,062	-11,465	$40,352,410	+21.2%	25.96%
LRCX	Lam Research Corp Technology	Reduced	159,785	-41,178	$34,139,663	−0.8%	21.96%
KLAC	Kla Corp Technology	Held	13,596	0	$20,018,886	+21.2%	12.88%
AAPL	Apple Inc. Technology	Held	78,561	0	$19,937,996	−6.6%	12.83%
CSCO	Cisco Systems, Inc. Technology	Held	205,951	0	$15,979,738	+0.7%	10.28%
MSFT	Microsoft Corp Technology	Held	38,524	0	$14,260,429	−23.5%	9.17%
HPQ	Hp Inc Technology	Held	295,406	0	$5,674,749	−13.8%	3.65%
INTC	Intel Corp Technology	Held	115,051	0	$5,077,200	+19.6%	3.27%