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Thomas Kosinski

Stembrook Asset Management, Llc

Assets Managed
$102.127M
Holdings
48
Last Quarter
2026 - Q1
Filed Date
1mo 17d ago
Growth Rate
-3.52%(2Q avg: -1.76%)
Sustained Growth
0 quarters

Portfolio positions

This chart displays the top 10 holdings in Stembrook Asset Management, Llc's 2026 - Q1 portfolio, based on their 13F SEC filing, out of a total of 48 positions.

Assets under management

The assets under management (AUM) of Stembrook Asset Management, Llc over the past 10 years (40 quarters) show continuous growth in total asset value over the last 0 quarters. As of the latest 13F SEC filing for 2026 - Q1, they manage 102.127M in assets, with a quarterly growth rate of -3.52% and a 2-quarter average growth rate of -1.76%. The portfolio is managed by Thomas Kosinski, and others.

Portfolio holdings

InvestmentPortfolio %Reported Value
AAPL
Apple Inc
Recent Activity
34.72%
$35.455M
139,703 shares@ $253.8 avg price
SPY
Spdr S&p 500 Etf Trust
Recent Activity
Increased 1.37%
16.72%
$17.069M
26,246 shares@ $650.35 avg price
VEA
Vanguard Ftse Developed Etf
Recent Activity
Decreased -1.12%
9.25%
$9.446M
147,413 shares@ $64.09 avg price
BND
Vanguard Total Bond Market
Recent Activity
Increased 2.38%
8.3%
$8.471M
115,028 shares@ $73.65 avg price
VTEB
Vanguard Tax-exempt Bond Etf
Recent Activity
Increased 0.08%
6.88%
$7.024M
140,786 shares@ $49.9 avg price
VXF
Vanguard Extended Market Etf
Recent Activity
Increased 0.86%
2.94%
$2.999M
14,572 shares@ $205.81 avg price
QQQ
Invesco Qqq Trust Series 1
Recent Activity
Increased 1.11%
2.22%
$2.267M
3,928 shares@ $577.19 avg price
GOOGL
Alphabet Inc-cl A
Recent Activity
1.64%
$1.671M
5,810 shares@ $287.57 avg price
VBR
Vanguard Small-cap Value Etf
Recent Activity
Decreased -0.43%
1.36%
$1.38M
6,351 shares@ $217.26 avg price
BRK.B
Berkshire Hathaway Inc-cl B
Recent Activity
Decreased -2.04%
1.36%
$1.379M
2,878 shares@ $479.21 avg price

1-10 of 48