Four Tree Island Advisory LLC

Registered adviser

CIK

2048142

Location

PORTSMOUTH, NH

Portfolio Value

Small $303,246,616

Diversification

Moderately concentrated

Filing Date

Global Rank

#5,221 / 8,827 ▲ 901

Top Industry

Semiconductor Equipment & Materials 45.5%

Period ended 4 months ago

Filed Aug 7, 2026 · 3mo

7 quarters · since Dec 2024

Regulatory profile

From Form ADV, the SEC filer profile, 13D/13G type codes and N-CEN, never from the name.

Holder type

Registered adviser

Form ADV roster, Nov 1, 2026

Form ADV adviser

CRD 158851

Roster of Nov 1, 2026

Regulatory AUM

$182,195,722

Main clients

Individuals and high net worth (95% of AUM)

Form ADV history

Monthly rosters from Dec 2019; each row is a run with the same figures, newest first.

Rosters	Regulatory AUM	Main clients
Apr 2026 to Nov 2026	$182,195,722	Individuals and high net worth (95%)
Apr 2025 to Mar 2026	$163,075,608	Individuals and high net worth (94%)
May 2024 to Mar 2025	$122,525,709	Individuals and high net worth (95%)

Portfolio style

Measured from the filed 13F common-share book for Jun 30, 2026, never from the firm's own description.

Style

Concentrated

The top 10 positions are 93.2% of the book (60%+)

Turnover

Low turnover

3.1% over the last four quarters (under 30%)

Horizon

Medium horizon

Value-weighted holding period 6.9 quarters (4 to under 12)

Closest benchmark: the Nasdaq-100 as of 2026-06-30, active share 94.0%; sector active share 40.7% against the combined 13F book's sector weights.

Over time 7 measured quarters

How the bands are measured

Style bands measure the filed 13F common-share book each closed quarter, tested in this order. Unknown: under $10,000,000 of valued equity or 5 stocks. Index-like (100+ stocks): active share of 20% or less against the closest benchmark, which is the S&P 500, S&P MidCap 400, S&P SmallCap 600, Russell 1000, Russell 2000, Nasdaq-100 or Dow Jones Industrial Average (weighted by an index-tracking fund's reported holdings or the index's constituents nearest the quarter end, over the names resolved to companies, and only when those are 90%+ of its weight) or every 13F filer's combined book, or index series holding 80%+ of the registered fund assets it advises (N-CEN) and equal to 50%+ of its book. Systematic-like: 500+ stocks, 100%+ annual turnover and a top 10 weight of 25% or less. Concentrated: a top 10 weight of 60%+ or 12 or fewer effective positions. Diversified active: none of these. Turnover is the smaller of buys and sells over average equity value, summed over four quarters: low under 30%, high 100%+. Horizon is the value-weighted number of quarters each position has been held: short under 4, long 12+.

Clone Performance

Build a hypothetical price-return history from this filer's public 13F holdings.

View clone backtest

Portfolio Concentration

24 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026

Top Position

32.6%

+7.9 pts

Top 5

71.1%

+2.4 pts

Top 10

93.2%

−0.4 pts

HHI

1,574

Moderately concentrated+322

Portfolio Trend

7 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Technology	47.9%	$145,166,180	5
Industrials	24.0%	$72,911,955	5
Financial Services	18.5%	$56,013,354	6
Consumer Cyclical	6.9%	$21,042,208	2
Healthcare	1.4%	$4,212,926	2
Communication Services	0.7%	$2,274,245	1
Basic Materials	0.4%	$1,213,995	2
Energy	0.1%	$411,753	1

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

8 positions

Ticker	Company	Δ Shares	Shares	Value
BHF	Brighthouse Financial, Inc.	+34,823	59,804	$3,785,593
AER	AerCap Holdings N.V.	+25,838	129,877	$18,933,469
GTX	Garrett Motion Inc.	+13,352	557,101	$20,183,769
EQH	Equitable Holdings, Inc.	+8,565	379,043	$16,632,406
JXN	Jackson Financial Inc.	+5,623	237,465	$24,314,041
MLI	Mueller Industries Inc	+4,900	233,271	$28,676,004
WLFC	Willis Lease Finance Corp	+2,739	108,160	$24,747,008
VOYA	Voya Financial, Inc.	+1,257	34,916	$3,160,945
No positions match the current search.

Trimmed

Positions the filer reduced

6 positions

Ticker	Company	Δ Shares	Shares	Value
AMAT	Applied Materials Inc	−3,458	54,300	$39,258,900
STLA	Stellantis N.V.	−682	149,554	$858,439
LRCX	Lam Research Corp	−500	227,800	$98,712,574
LYB	LyondellBasell Industries N.V.	−293	9,992	$526,078
NTR	Nutrien Ltd.	−235	10,928	$687,917
LMT	Lockheed Martin Corp	−63	428	$218,048
No positions match the current search.

New Positions

Positions the filer opened this quarter

3 positions

Ticker	Company	Shares	Value
NVDA	Nvidia Corp	16,186	$3,238,656
DDI	DoubleDown Interactive Co., Ltd.	198,105	$2,274,245
MCHP	Microchip Technology Inc	2,194	$200,092
No positions match the current search.

Sold Out

Positions the filer fully exited

2 positions

Ticker	Company	Shares	Value
NBBK	NB Bancorp, Inc.	25,011	$526,981
GT	Goodyear Tire & Rubber Co	17,500	$116,025
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

24 tracked positions · $303,246,616 total · filing declares 24 positions · $303,246,629 · as of Jun 30, 2026

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

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	Held (qtrs)	Est. cost/share	% of Portfolio
LRCX	Lam Research Corp Technology	Reduced	227,800	-500	$98,712,574	+102.4%	7	before history	32.55%
AMAT	Applied Materials Inc Technology	Reduced	54,300	-3,458	$39,258,900	+98.9%	7	before history	12.95%
MLI	Mueller Industries Inc Industrials	Added	233,271	+4,900	$28,676,004	+13.3%	7	before history	9.46%
WLFC	Willis Lease Finance Corp Industrials	Added	108,160	+2,739	$24,747,008	+37.9%	7	before history	8.16%
JXN	Jackson Financial Inc. Financial Services	Added	237,465	+5,623	$24,314,041	−0.8%	7	before history	8.02%
GTX	Garrett Motion Inc. Consumer Cyclical	Added	557,101	+13,352	$20,183,769	+104.3%	7	before history	6.66%
AER	AerCap Holdings N.V. Industrials	Added	129,877	+25,838	$18,933,469	+32.7%	7	before history	6.24%
EQH	Equitable Holdings, Inc. Financial Services	Added	379,043	+8,565	$16,632,406	+21.0%	7	before history	5.48%
AB	Alliancebernstein Holding L.P. Financial Services	Held	207,571	0	$7,310,650	−5.9%	7	before history	2.41%
BHF	Brighthouse Financial, Inc. Financial Services	Added	59,804	+34,823	$3,785,593	+153.1%	6	$58.64	1.25%
ITRN	Ituran Location & Control Ltd. Technology	Held	61,563	0	$3,755,958	+24.5%	7	before history	1.24%
BMY	Bristol Myers Squibb Co Healthcare	Held	58,337	0	$3,361,377	−5.0%	7	before history	1.11%
NVDA	Nvidia Corp Technology	NEW	16,186	NEW	$3,238,656	NEW	1	$205.61	1.07%
VOYA	Voya Financial, Inc. Financial Services	Added	34,916	+1,257	$3,160,945	+37.5%	7	before history	1.04%
DDI	DoubleDown Interactive Co., Ltd. Communication Services	NEW	198,105	NEW	$2,274,245	NEW	1	$10.76	0.75%
STLA	Stellantis N.V. Consumer Cyclical	Reduced	149,554	-682	$858,439	−19.4%	7	before history	0.28%
ABBV	AbbVie Inc. Healthcare	Held	3,384	0	$851,549	+15.7%	7	before history	0.28%
HOPE	Hope Bancorp Inc Financial Services	Held	59,190	0	$809,719	+22.5%	4	$10.80	0.27%
NTR	Nutrien Ltd. Basic Materials	Reduced	10,928	-235	$687,917	−18.3%	7	before history	0.23%
LYB	LyondellBasell Industries N.V. Basic Materials	Reduced	9,992	-293	$526,078	−36.5%	7	before history	0.17%
DVN	Devon Energy Corp Energy	Held	9,965	0	$411,753	−17.9%	7	before history	0.14%
TT	Trane Technologies plc Industrials	Held	687	0	$337,426	+17.9%	7	before history	0.11%
LMT	Lockheed Martin Corp Industrials	Reduced	428	-63	$218,048	−26.5%	4	$453.72	0.07%
MCHP	Microchip Technology Inc Technology	NEW	2,194	NEW	$200,092	NEW	1	$89.18	0.07%

Covers the securities this platform tracks: U.S.-listed common stock and the put/call positions reported on it. A 13F can also report security types outside that coverage — preferred shares, bonds, warrants, untracked share classes — so the filing's own declared total can exceed the figures above. The source filing is linked at the top of this table.