Stembrook Asset Management, LLC

Registered adviser

CIK

2109734

Location

RED BANK, NJ

Portfolio Value

Small $115,816,106

Diversification

Moderately concentrated

Filing Date

Global Rank

#8,122 / 8,827 ▼ 18

Top Industry

Consumer Electronics 68.7%

Period ended 4 months ago

Filed Aug 12, 2026 · 3mo

3 quarters · since Dec 2025

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 144116

Roster of Nov 1, 2026

Regulatory AUM

$147,516,006

Main clients

Individuals and high net worth (100% 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	$147,516,006	Individuals and high net worth (100%)
Apr 2025 to Mar 2026	$127,625,470	Individuals and high net worth (100%)
Feb 2025 to Mar 2025	$129,338,818	Individuals and high net worth (100%)

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 83.6% of the book (60%+)

Turnover

Turnover unknown

It needs four straight quarters of measured turnover

Horizon

Short horizon

Value-weighted holding period 3.0 quarters (under 4)

Closest benchmark: the S&P 500 as of 2026-06-30, active share 80.0%; sector active share 46.0% against the combined 13F book's sector weights.

Over time 3 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

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

Top Position

34.9%

+0.2 pts

Top 5

73.7%

−2.2 pts

Top 10

83.6%

−1.8 pts

HHI

1,693

Moderately concentrated−21

Portfolio Trend

3 quarters · across all stocks

Sector Breakdown

As of Jun 30, 2026

Sector	% Portfolio	Value	Positions
Unclassified	49.3%	$57,043,940	12
Technology	38.3%	$44,404,511	8
Financial Services	3.6%	$4,137,750	7
Industrials	1.9%	$2,249,894	7
Communication Services	1.8%	$2,076,319	1
Healthcare	1.7%	$1,944,198	5
Energy	1.3%	$1,513,980	4
Consumer Cyclical	1.1%	$1,229,625	3
Consumer Defensive	1.0%	$1,215,889	4

Last Quarter's Activity

Export CSV

Jun 30, 2026 vs Mar 31, 2026

Added To

Positions the filer increased

3 positions

Ticker	Company	Δ Shares	Shares	Value
BND	VANGUARD TOTAL BOND MARKET INDEX FUND	+1,811	116,839	$8,577,150
XOM	ExxonMobil Holdings Corp	+75	3,174	$433,949
SCHX	Schwab U.S. Large-Cap ETF	+42	21,802	$641,632
No positions match the current search.

Trimmed

Positions the filer reduced

11 positions

Ticker	Company	Δ Shares	Shares	Value
VEA	Vanguard FTSE Developed Markets ETF	−5,717	141,696	$10,095,840
VTEB	VANGUARD TAX-EXEMPT BOND INDEX FUND	−3,886	136,900	$6,924,402
VWO	VANGUARD EMERGING MARKETS STOCK INDEX FUND	−502	23,373	$1,395,134
SPY	Spdr S&P 500 ETF Trust	−373	25,873	$19,321,180
—		−350	14,222	$3,501,598
QQQ	Invesco Qqq Trust, Series 1	−309	3,619	$2,665,031
VBR	VANGUARD SMALL-CAP VALUE INDEX FUND	−304	6,047	$1,469,360
SCHA	Schwab U.S. Small-Cap ETF	−294	7,674	$277,261
AAPL	Apple Inc.	−100	139,603	$40,395,524
SCHF	Schwab International Equity ETF	−75	15,127	$419,017
BRK-B	Berkshire Hathaway Inc	−23	2,855	$1,428,613
No positions match the current search.

New Positions

Positions the filer opened this quarter

4 positions

Ticker	Company	Shares	Value
BGGG	Baillie Gifford Long Term Global Growth ETF	49,811	$1,756,335
CMI	Cummins Inc	340	$242,491
GWW	W.W. Grainger, Inc.	160	$217,664
VLO	Valero Energy Corp	790	$205,747
No positions match the current search.

Sold Out

Positions the filer fully exited

1 positions

Ticker	Company	Shares	Value	Open
GERN	Geron Corp	20,000	$29,800
No positions match the current search.

Portfolio Positions

Compact Export CSV View 13F filing

51 tracked positions · $115,816,106 total · filing declares 51 positions · $115,816,203 · as of Jun 30, 2026

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

Showing 1–50 of 51 positions by value · page 1 of 2

Ticker	Company	Type	Shares	Δ Shares	Value (USD)	% Δ Value	Held (qtrs)	Est. cost/share	% of Portfolio
AAPL	Apple Inc. Technology	Reduced	139,603	-100	$40,395,524	+13.9%	3	before history	34.88%
SPY	Spdr S&P 500 ETF Trust	Reduced	25,873	-373	$19,321,180	+13.2%	3	before history	16.68%
VEA	Vanguard FTSE Developed Markets ETF	Reduced	141,696	-5,717	$10,095,840	+6.9%	3	before history	8.72%
BND	VANGUARD TOTAL BOND MARKET INDEX FUND	Added	116,839	+1,811	$8,577,150	+1.3%	3	before history	7.41%
VTEB	VANGUARD TAX-EXEMPT BOND INDEX FUND	Reduced	136,900	-3,886	$6,924,402	−1.4%	3	before history	5.98%
		Reduced	14,222	-350	$3,501,598	+16.8%	3	before history	3.02%
QQQ	Invesco Qqq Trust, Series 1	Reduced	3,619	-309	$2,665,031	+17.5%	3	before history	2.30%
GOOGL	Alphabet Inc. Communication Services	Held	5,810	0	$2,076,319	+24.3%	3	before history	1.79%
BGGG	Baillie Gifford Long Term Global Growth ETF	NEW	49,811	NEW	$1,756,335	NEW	1	$34.67	1.52%
VBR	VANGUARD SMALL-CAP VALUE INDEX FUND	Reduced	6,047	-304	$1,469,360	+6.5%	3	before history	1.27%
BRK-B	Berkshire Hathaway Inc Financial Services	Reduced	2,855	-23	$1,428,613	+3.6%	3	before history	1.23%
VWO	VANGUARD EMERGING MARKETS STOCK INDEX FUND	Reduced	23,373	-502	$1,395,134	+8.1%	3	before history	1.20%
MSFT	Microsoft Corp Technology	Held	2,510	0	$936,280	+0.8%	3	before history	0.81%
AMD	Advanced Micro Devices Inc Technology	Held	1,344	0	$780,743	+185.6%	3	before history	0.67%
INTC	Intel Corp Technology	Held	5,239	0	$731,521	+216.4%	2	$45.84	0.63%
COF	Capital One Financial Corp Financial Services	Held	3,500	0	$702,170	+10.0%	3	before history	0.61%
MPC	Marathon Petroleum Corp Energy	Held	2,556	0	$653,492	+4.7%	3	before history	0.56%
SCHX	Schwab U.S. Large-Cap ETF	Added	21,802	+42	$641,632	+15.0%	3	before history	0.55%
CSCO	Cisco Systems, Inc. Technology	Held	5,293	0	$621,715	+51.4%	3	before history	0.54%
UMBF	Umb Financial Corp Financial Services	Held	4,269	0	$609,442	+26.6%	3	before history	0.53%
AMZN	Amazon Com Inc Consumer Cyclical	Held	2,537	0	$604,668	+14.4%	3	before history	0.52%
JNJ	Johnson & Johnson Healthcare	Held	2,359	0	$599,115	+3.9%	3	before history	0.52%
JPM	Jpmorgan Chase & Co Financial Services	Held	1,500	0	$490,995	+11.3%	3	before history	0.42%
WMT	Walmart Inc. Consumer Defensive	Held	4,257	0	$482,147	−8.9%	3	before history	0.42%
LLY	ELI LILLY & Co Healthcare	Held	401	0	$480,971	+30.4%	3	before history	0.42%
GD	General Dynamics Corp Industrials	Held	1,233	0	$436,777	+3.2%	3	before history	0.38%
XOM	ExxonMobil Holdings Corp Energy	Added	3,174	+75	$433,949	−17.5%	3	before history	0.37%
UNP	Union Pacific Corp Industrials	Held	1,553	0	$422,416	+12.1%	3	before history	0.36%
SCHF	Schwab International Equity ETF	Reduced	15,127	-75	$419,017	+11.4%	3	before history	0.36%
NVDA	Nvidia Corp Technology	Held	1,797	0	$359,561	+14.7%	3	before history	0.31%
ABBV	AbbVie Inc. Healthcare	Held	1,417	0	$356,573	+15.7%	3	before history	0.31%
ORCL	Oracle Corp Technology	Held	2,404	0	$352,306	−0.4%	3	before history	0.30%
AXP	American Express Co Financial Services	Held	1,028	0	$347,721	+11.8%	3	before history	0.30%
LMT	Lockheed Martin Corp Industrials	Held	666	0	$339,300	−15.7%	3	before history	0.29%
PH	Parker-Hannifin Corp Industrials	Held	330	0	$322,779	+9.3%	3	before history	0.28%
LOW	Lowes Companies Inc Consumer Cyclical	Held	1,444	0	$318,387	−6.7%	3	before history	0.27%
SPGI	S&P Global Inc. Financial Services	Held	766	0	$311,961	−4.3%	3	before history	0.27%
SBUX	Starbucks Corp Consumer Cyclical	Held	3,000	0	$306,570	+14.1%	3	before history	0.26%
SCHA	Schwab U.S. Small-Cap ETF	Reduced	7,674	-294	$277,261	+19.7%	3	before history	0.24%
RTX	RTX Corp Industrials	Held	1,415	0	$268,467	−1.6%	3	before history	0.23%
MRK	Merck & Co., Inc. Healthcare	Held	2,040	0	$262,140	+6.8%	3	before history	0.23%
PM	Philip Morris International Inc. Consumer Defensive	Held	1,426	0	$257,977	+9.4%	3	before history	0.22%
KO	Coca Cola Co Consumer Defensive	Held	3,061	0	$248,767	+6.9%	3	before history	0.21%
PGR	Progressive Corp Financial Services	Held	1,130	0	$246,848	+10.2%	3	before history	0.21%
PFE	Pfizer Inc Healthcare	Held	10,191	0	$245,399	−14.2%	3	before history	0.21%
CMI	Cummins Inc Industrials	NEW	340	NEW	$242,491	NEW	1	$658.88	0.21%
PG	PROCTER & GAMBLE Co Consumer Defensive	Held	1,548	0	$226,998	+1.5%	3	before history	0.20%
ADP	Automatic Data Processing Inc Technology	Held	1,013	0	$226,861	+10.2%	3	before history	0.20%
CVX	Chevron Corp Energy	Held	1,332	0	$220,792	−19.9%	3	before history	0.19%
GWW	W.W. Grainger, Inc. Industrials	NEW	160	NEW	$217,664	NEW	1	$1,232.29	0.19%

Showing the top 50 of 51 positions. Create a free account to see every position, past quarters, search, filters and CSV export.

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.