Filed: 5/13/2026ACC: 0002109734-26-000004
📋 What this filing means
STEMBROOK ASSET MANAGEMENT, LLC filed this quarterly 13F‑HR report disclosing 48 equity positions with a total reported market value of $102.13M. This filing provides a transparent view of the manager's long equity holdings as of the quarter end.
48
Positions
$102.13M
Total AUM (reported)
769.18K
Total Shares
Allocation by class
COM$47.97M47.0%
TR UNIT$17.07M16.7%
VAN FTSE DEV MKT$9.45M9.2%
TOTAL BND MRKT$8.47M8.3%
TAX EXEMPT BD$7.02M6.9%
EXTEND MKT ETF$3.00M2.9%
UNIT SER 1$2.27M2.2%
Portfolio Concentration
Top 3$61.97M60.7%
4–10$25.19M24.7%
11–25$8.74M8.6%
Rest$6.23M6.1%
Top 3 weight
60.7%
Top 10 weight
85.3%
Voting Authority Distribution
Total shares with voting rights: 769.18K
Sole
Full voting authority
0.00
shares
% of voting shares0.0%
Shared
Joint voting authority
0.00
shares
% of voting shares0.0%
None
No voting authority
769.18K
shares
% of voting shares100.0%
Investment Discretion (by position count)
Sole48
Shared0
Other0
Dominant voting typeNone · 100.0% of voting shares
Institutional Holdings48
Rows:
APPLE INC
SOLEShares139.70K
TypeSH
Market value$35.46M
34.72%
Sole
0.00
Shared
0.00
None
139.70K
STATE STR SPDR S&P 500 ETF T
SOLEShares26.25K
TypeSH
Market value$17.07M
16.71%
Sole
0.00
Shared
0.00
None
26.25K
VANGUARD TAX-MANAGED FDS
SOLEShares147.41K
TypeSH
Market value$9.45M
9.25%
Sole
0.00
Shared
0.00
None
147.41K
VANGUARD BD INDEX FDS
SOLEShares115.03K
TypeSH
Market value$8.47M
8.29%
Sole
0.00
Shared
0.00
None
115.03K
VANGUARD MUN BD FDS
SOLEShares140.79K
TypeSH
Market value$7.02M
6.88%
Sole
0.00
Shared
0.00
None
140.79K
VANGUARD INDEX FDS
SOLEShares14.57K
TypeSH
Market value$3.00M
2.94%
Sole
0.00
Shared
0.00
None
14.57K
INVESCO QQQ TR
SOLEShares3.93K
TypeSH
Market value$2.27M
2.22%
Sole
0.00
Shared
0.00
None
3.93K
ALPHABET INC
SOLEShares5.81K
TypeSH
Market value$1.67M
1.64%
Sole
0.00
Shared
0.00
None
5.81K
VANGUARD INDEX FDS
SOLEShares6.35K
TypeSH
Market value$1.38M
1.35%
Sole
0.00
Shared
0.00
None
6.35K
BERKSHIRE HATHAWAY INC DEL
SOLEShares2.88K
TypeSH
Market value$1.38M
1.35%
Sole
0.00
Shared
0.00
None
2.88K
VANGUARD INTL EQUITY INDEX F
SOLEShares23.88K
TypeSH
Market value$1.29M
1.26%
Sole
0.00
Shared
0.00
None
23.88K
MICROSOFT CORP
SOLEShares2.51K
TypeSH
Market value$929.1K
0.91%
Sole
0.00
Shared
0.00
None
2.51K
CAPITAL ONE FINL CORP
SOLEShares3.50K
TypeSH
Market value$638.5K
0.63%
Sole
0.00
Shared
0.00
None
3.50K
MARATHON PETE CORP
SOLEShares2.56K
TypeSH
Market value$624.1K
0.61%
Sole
0.00
Shared
0.00
None
2.56K
JOHNSON & JOHNSON
SOLEShares2.36K
TypeSH
Market value$576.6K
0.56%
Sole
0.00
Shared
0.00
None
2.36K
SCHWAB STRATEGIC TR
SOLEShares21.76K
TypeSH
Market value$557.9K
0.55%
Sole
0.00
Shared
0.00
None
21.76K
WALMART INC
SOLEShares4.26K
TypeSH
Market value$529.1K
0.52%
Sole
0.00
Shared
0.00
None
4.26K
AMAZON COM INC
SOLEShares2.54K
TypeSH
Market value$528.4K
0.52%
Sole
0.00
Shared
0.00
None
2.54K
EXXON MOBIL CORP
SOLEShares3.10K
TypeSH
Market value$525.8K
0.51%
Sole
0.00
Shared
0.00
None
3.10K
UMB FINL CORP
SOLEShares4.27K
TypeSH
Market value$481.5K
0.47%
Sole
0.00
Shared
0.00
None
4.27K
JPMORGAN CHASE & CO
SOLEShares1.50K
TypeSH
Market value$441.2K
0.43%
Sole
0.00
Shared
0.00
None
1.50K
GENERAL DYNAMICS CORP
SOLEShares1.23K
TypeSH
Market value$423.2K
0.41%
Sole
0.00
Shared
0.00
None
1.23K
CISCO SYS INC
SOLEShares5.29K
TypeSH
Market value$410.7K
0.40%
Sole
0.00
Shared
0.00
None
5.29K
LOCKHEED MARTIN CORP
SOLEShares666.00
TypeSH
Market value$402.5K
0.39%
Sole
0.00
Shared
0.00
None
666.00
UNION PAC CORP
SOLEShares1.55K
TypeSH
Market value$376.8K
0.37%
Sole
0.00
Shared
0.00
None
1.55K
| Issuer | Class | Shares | Type | Value / Portfolio % | Voting — Sole | Shared | None |
|---|---|---|---|---|---|---|---|
APPLE INCSOLE | COM | 139.70K | SH | $35.46M 34.72% | 0.00 | 0.00 | 139.70K |
STATE STR SPDR S&P 500 ETF TSOLE | TR UNIT | 26.25K | SH | $17.07M 16.71% | 0.00 | 0.00 | 26.25K |
VANGUARD TAX-MANAGED FDSSOLE | VAN FTSE DEV MKT | 147.41K | SH | $9.45M 9.25% | 0.00 | 0.00 | 147.41K |
VANGUARD BD INDEX FDSSOLE | TOTAL BND MRKT | 115.03K | SH | $8.47M 8.29% | 0.00 | 0.00 | 115.03K |
VANGUARD MUN BD FDSSOLE | TAX EXEMPT BD | 140.79K | SH | $7.02M 6.88% | 0.00 | 0.00 | 140.79K |
VANGUARD INDEX FDSSOLE | EXTEND MKT ETF | 14.57K | SH | $3.00M 2.94% | 0.00 | 0.00 | 14.57K |
INVESCO QQQ TRSOLE | UNIT SER 1 | 3.93K | SH | $2.27M 2.22% | 0.00 | 0.00 | 3.93K |
ALPHABET INCSOLE | CAP STK CL A | 5.81K | SH | $1.67M 1.64% | 0.00 | 0.00 | 5.81K |
VANGUARD INDEX FDSSOLE | SM CP VAL ETF | 6.35K | SH | $1.38M 1.35% | 0.00 | 0.00 | 6.35K |
BERKSHIRE HATHAWAY INC DELSOLE | CL B NEW | 2.88K | SH | $1.38M 1.35% | 0.00 | 0.00 | 2.88K |
VANGUARD INTL EQUITY INDEX FSOLE | FTSE EMR MKT ETF | 23.88K | SH | $1.29M 1.26% | 0.00 | 0.00 | 23.88K |
MICROSOFT CORPSOLE | COM | 2.51K | SH | $929.1K 0.91% | 0.00 | 0.00 | 2.51K |
CAPITAL ONE FINL CORPSOLE | COM | 3.50K | SH | $638.5K 0.63% | 0.00 | 0.00 | 3.50K |
MARATHON PETE CORPSOLE | COM | 2.56K | SH | $624.1K 0.61% | 0.00 | 0.00 | 2.56K |
JOHNSON & JOHNSONSOLE | COM | 2.36K | SH | $576.6K 0.56% | 0.00 | 0.00 | 2.36K |
SCHWAB STRATEGIC TRSOLE | US LRG CAP ETF | 21.76K | SH | $557.9K 0.55% | 0.00 | 0.00 | 21.76K |
WALMART INCSOLE | COM | 4.26K | SH | $529.1K 0.52% | 0.00 | 0.00 | 4.26K |
AMAZON COM INCSOLE | COM | 2.54K | SH | $528.4K 0.52% | 0.00 | 0.00 | 2.54K |
EXXON MOBIL CORPSOLE | COM | 3.10K | SH | $525.8K 0.51% | 0.00 | 0.00 | 3.10K |
UMB FINL CORPSOLE | COM | 4.27K | SH | $481.5K 0.47% | 0.00 | 0.00 | 4.27K |
JPMORGAN CHASE & COSOLE | COM | 1.50K | SH | $441.2K 0.43% | 0.00 | 0.00 | 1.50K |
GENERAL DYNAMICS CORPSOLE | COM | 1.23K | SH | $423.2K 0.41% | 0.00 | 0.00 | 1.23K |
CISCO SYS INCSOLE | COM | 5.29K | SH | $410.7K 0.40% | 0.00 | 0.00 | 5.29K |
LOCKHEED MARTIN CORPSOLE | COM | 666.00 | SH | $402.5K 0.39% | 0.00 | 0.00 | 666.00 |
UNION PAC CORPSOLE | COM | 1.55K | SH | $376.8K 0.37% | 0.00 | 0.00 | 1.55K |
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