Stembrook Asset Management, LLC

CIK

2109734

Location

RED BANK, NJ

Portfolio Value

Micro $70,351,292

Diversification

Highly concentrated

Filing Date

Global Rank

#5,987 / 8,232 ▲ 193

Top Industry

Consumer Electronics 69.5%

3Y Alpha vs SPY

+9.4%

Period ended 2 months ago

Filed May 13, 2026 · 32d

2 quarters · since Dec 2025

Clone Performance

Feb 2026–Jun 2026 · vs SPY

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

Cloned portfolio

+11.6%

SPY

+9.1%

Annualised alpha

+9.4%

Max drawdown

−8.8%

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

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

Top Position

50.4%

−0.7 pts

Top 5

82.2%

−0.3 pts

Top 10

86.9%

−0.5 pts

HHI

3,160

Highly concentrated−50

Portfolio Trend

2 quarters · across all stocks

Sector Breakdown

As of Mar 31, 2026

Sector	% Portfolio	Value	Positions
Technology	54.3%	$38,172,508	8
Unclassified	27.5%	$19,335,986	2
Financial Services	5.4%	$3,801,152	7
Healthcare	2.6%	$1,814,997	6
Industrials	2.5%	$1,770,883	5
Communication Services	2.4%	$1,670,723	1
Energy	2.0%	$1,425,490	3
Consumer Defensive	1.7%	$1,221,215	4
Consumer Cyclical	1.6%	$1,138,338	3

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
SPY	Spdr S&P 500 ETF Trust	+353	26,246	$17,068,823
QQQ	Invesco Qqq Trust, Series 1	+43	3,928	$2,267,163
No positions match the current search.

Trimmed

Positions the filer reduced

1 positions

Ticker	Company	Δ Shares	Shares	Value	Open
BRK-B	Berkshire Hathaway Inc	−60	2,878	$1,379,137
No positions match the current search.

New Positions

Positions the filer opened this quarter

2 positions

Ticker	Company	Shares	Value
INTC	Intel Corp	5,239	$231,197
GERN	Geron Corp	20,000	$29,800
No positions match the current search.

Sold Out

Positions the filer fully exited

2 positions

Ticker	Company	Shares	Value
CRM	Salesforce, Inc.	1,000	$264,910
BITW	Bitwise 10 Crypto Index ETF	3,456	$203,074
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

39 positions · $70,351,292 total · as of Mar 31, 2026

All sectors Communication Services Consumer Cyclical Consumer Defensive Energy Financial Services Healthcare Industrials Technology

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	% of Portfolio
AAPL	Apple Inc. Technology	Held	139,703	0	$35,455,224	−6.6%	50.40%
SPY	Spdr S&P 500 ETF Trust	Added	26,246	+353	$17,068,823	−3.3%	24.26%
QQQ	Invesco Qqq Trust, Series 1	Added	3,928	+43	$2,267,163	−5.0%	3.22%
GOOGL	Alphabet Inc. Communication Services	Held	5,810	0	$1,670,723	−8.1%	2.37%
BRK-B	Berkshire Hathaway Inc Financial Services	Reduced	2,878	-60	$1,379,137	−6.6%	1.96%
MSFT	Microsoft Corp Technology	Held	2,510	0	$929,126	−23.5%	1.32%
COF	Capital One Financial Corp Financial Services	Held	3,500	0	$638,505	−24.7%	0.91%
MPC	Marathon Petroleum Corp Energy	Held	2,556	0	$624,124	+50.1%	0.89%
JNJ	Johnson & Johnson Healthcare	Held	2,359	0	$576,633	+18.1%	0.82%
WMT	Walmart Inc. Consumer Defensive	Held	4,257	0	$529,059	+11.6%	0.75%
AMZN	Amazon Com Inc Consumer Cyclical	Held	2,537	0	$528,380	−9.8%	0.75%
XOM	Exxon Mobil Corp Energy	Held	3,099	0	$525,776	+41.0%	0.75%
UMBF	Umb Financial Corp Financial Services	Held	4,269	0	$481,500	−2.0%	0.68%
JPM	Jpmorgan Chase & Co Financial Services	Held	1,500	0	$441,240	−8.7%	0.63%
GD	General Dynamics Corp Industrials	Held	1,233	0	$423,190	+1.9%	0.60%
CSCO	Cisco Systems, Inc. Technology	Held	5,293	0	$410,683	+0.7%	0.58%
LMT	Lockheed Martin Corp Industrials	Held	666	0	$402,523	+25.0%	0.57%
UNP	Union Pacific Corp Industrials	Held	1,553	0	$376,788	+4.9%	0.54%
LLY	ELI LILLY & Co Healthcare	Held	401	0	$368,827	−14.4%	0.52%
ORCL	Oracle Corp Technology	Held	2,404	0	$353,652	−24.5%	0.50%
LOW	Lowes Companies Inc Consumer Cyclical	Held	1,444	0	$341,188	−2.0%	0.48%
SPGI	S&P Global Inc. Financial Services	Held	766	0	$325,810	−18.6%	0.46%
NVDA	Nvidia Corp Technology	Held	1,797	0	$313,396	−6.5%	0.45%
AXP	American Express Co Financial Services	Held	1,028	0	$310,949	−18.2%	0.44%
ABBV	AbbVie Inc. Healthcare	Held	1,417	0	$308,183	−4.8%	0.44%
PH	Parker-Hannifin Corp Industrials	Held	330	0	$295,429	+1.9%	0.42%
PFE	Pfizer Inc Healthcare	Held	10,191	0	$286,163	+12.8%	0.41%
CVX	Chevron Corp Energy	Held	1,332	0	$275,590	+35.8%	0.39%
AMD	Advanced Micro Devices Inc Technology	Held	1,344	0	$273,409	−5.0%	0.39%
RTX	RTX Corp Industrials	Held	1,415	0	$272,953	+5.2%	0.39%
SBUX	Starbucks Corp Consumer Cyclical	Held	3,000	0	$268,770	+6.4%	0.38%
MRK	Merck & Co., Inc. Healthcare	Held	2,040	0	$245,391	+14.3%	0.35%
PM	Philip Morris International Inc. Consumer Defensive	Held	1,426	0	$235,774	+3.1%	0.34%
KO	Coca Cola Co Consumer Defensive	Held	3,061	0	$232,789	+8.8%	0.33%
INTC	Intel Corp Technology	NEW	5,239	NEW	$231,197	NEW	0.33%
PGR	Progressive Corp/Oh/ Financial Services	Held	1,130	0	$224,011	−12.9%	0.32%
PG	PROCTER & GAMBLE Co Consumer Defensive	Held	1,548	0	$223,593	+0.8%	0.32%
ADP	Automatic Data Processing Inc Technology	Held	1,013	0	$205,821	−21.0%	0.29%
GERN	Geron Corp Healthcare	NEW	20,000	NEW	$29,800	NEW	0.04%