Stembrook Asset Management, LLC — 13F Holdings & Portfolio
CIK 2109734 · latest 13F-HR filed 2026-05-13
Stembrook Asset Management, LLC manages $102.1M in 13F-reported U.S. long-equity assets across 48 reported positions as of its 2026-03-31 13F-HR filing. Its largest disclosed positions are AAPL (34.72%), SPY (16.71%), VEA (9.25%). Quarter over quarter (versus its 2025-12-31 filing) the fund opened 2 new positions, exited 2, added to 11, and trimmed 16.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$102.1M
Long-equity book
48
Distinct positions
2026-03-31
Filed 2026-05-13
+2 / −2 / ↑11 / ↓16
vs 2025-12-31
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- MARATHON PETE CORP$208.4K +50.1%
- EXXON MOBIL CORP$152.8K +41.0%
- JOHNSON & JOHNSON$88.4K +18.1%
- LOCKHEED MARTIN CORP$80.4K +25.0%
- CHEVRON CORPORATION$72.6K +35.8%
Top Trims
- APPLE INC-$2.5M -6.6%
- MICROSOFT CORP-$284.8K -23.5%
- CAPITAL ONE FINL CORP-$209.8K -24.7%
- ALPHABET INC-$147.8K -8.1%
- INVESCO QQQ TR-$119.4K -5.0%
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | APPLE INC | AAPL | 037833100 | $35.5M | 34.72% | 139,703 | SH |
| 2 | STATE STR SPDR S&P 500 ETF T | SPY | 78462F103 | $17.1M | 16.71% | 26,246 | SH |
| 3 | VANGUARD TAX-MANAGED FDS | VEA | 921943858 | $9.4M | 9.25% | 147,413 | SH |
| 4 | VANGUARD BD INDEX FDS | BND | 921937835 | $8.5M | 8.29% | 115,028 | SH |
| 5 | VANGUARD MUN BD FDS | VTEB | 922907746 | $7.0M | 6.88% | 140,786 | SH |
| 6 | VANGUARD INDEX FDS | VXF | 922908652 | $3.0M | 2.94% | 14,572 | SH |
| 7 | INVESCO QQQ TR | QQQ | 46090E103 | $2.3M | 2.22% | 3,928 | SH |
| 8 | ALPHABET INC | GOOGL | 02079K305 | $1.7M | 1.64% | 5,810 | SH |
| 9 | VANGUARD INDEX FDS | VBR | 922908611 | $1.4M | 1.35% | 6,351 | SH |
| 10 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $1.4M | 1.35% | 2,878 | SH |
| 11 | VANGUARD INTL EQUITY INDEX F | VWO | 922042858 | $1.3M | 1.26% | 23,875 | SH |
| 12 | MICROSOFT CORP | MSFT | 594918104 | $929.1K | 0.91% | 2,510 | SH |
| 13 | CAPITAL ONE FINL CORP | COF | 14040H105 | $638.5K | 0.63% | 3,500 | SH |
| 14 | MARATHON PETE CORP | MPC | 56585A102 | $624.1K | 0.61% | 2,556 | SH |
| 15 | JOHNSON & JOHNSON | JNJ | 478160104 | $576.6K | 0.56% | 2,359 | SH |
| 16 | SCHWAB STRATEGIC TR | SCHX | 808524201 | $557.9K | 0.55% | 21,760 | SH |
| 17 | WALMART INC | WMT | 931142103 | $529.1K | 0.52% | 4,257 | SH |
| 18 | AMAZON COM INC | AMZN | 023135106 | $528.4K | 0.52% | 2,537 | SH |
| 19 | EXXON MOBIL CORP | XOM | 30231G102 | $525.8K | 0.51% | 3,099 | SH |
| 20 | UMB FINL CORP | UMBF | 902788108 | $481.5K | 0.47% | 4,269 | SH |
| 21 | JPMORGAN CHASE & CO | JPM | 46625H100 | $441.2K | 0.43% | 1,500 | SH |
| 22 | GENERAL DYNAMICS CORP | GD | 369550108 | $423.2K | 0.41% | 1,233 | SH |
| 23 | CISCO SYS INC | CSCO | 17275R102 | $410.7K | 0.40% | 5,293 | SH |
| 24 | LOCKHEED MARTIN CORP | LMT | 539830109 | $402.5K | 0.39% | 666 | SH |
| 25 | UNION PAC CORP | UNP | 907818108 | $376.8K | 0.37% | 1,553 | SH |
| 26 | SCHWAB STRATEGIC TR | SCHF | 808524805 | $376.2K | 0.37% | 15,202 | SH |
| 27 | ELI LILLY & CO | LLY | 532457108 | $368.8K | 0.36% | 401 | SH |
| 28 | ORACLE CORP | ORCL | 68389X105 | $353.7K | 0.35% | 2,404 | SH |
| 29 | LOWES COS INC | LOW | 548661107 | $341.2K | 0.33% | 1,444 | SH |
| 30 | S&P GLOBAL INC | SPGI | 78409V104 | $325.8K | 0.32% | 766 | SH |
| 31 | NVIDIA CORPORATION | NVDA | 67066G104 | $313.4K | 0.31% | 1,797 | SH |
| 32 | AMERICAN EXPRESS CO | AXP | 025816109 | $310.9K | 0.30% | 1,028 | SH |
| 33 | ABBVIE INC | ABBV | 00287Y109 | $308.2K | 0.30% | 1,417 | SH |
| 34 | PARKER-HANNIFIN CORP | PH | 701094104 | $295.4K | 0.29% | 330 | SH |
| 35 | PFIZER INC | PFE | 717081103 | $286.2K | 0.28% | 10,191 | SH |
| 36 | CHEVRON CORPORATION | CVX | 166764100 | $275.6K | 0.27% | 1,332 | SH |
| 37 | ADVANCED MICRO DEVICES INC | AMD | 007903107 | $273.4K | 0.27% | 1,344 | SH |
| 38 | RTX CORPORATION | RTX | 75513E101 | $273.0K | 0.27% | 1,415 | SH |
| 39 | STARBUCKS CORP | SBUX | 855244109 | $268.8K | 0.26% | 3,000 | SH |
| 40 | MERCK & CO INC | MRK | 58933Y105 | $245.4K | 0.24% | 2,040 | SH |
| 41 | PHILIP MORRIS INTL INC | PM | 718172109 | $235.8K | 0.23% | 1,426 | SH |
| 42 | COCA COLA CO | KO | 191216100 | $232.8K | 0.23% | 3,061 | SH |
| 43 | SCHWAB STRATEGIC TR | SCHA | 808524607 | $231.7K | 0.23% | 7,968 | SH |
| 44 | INTEL CORP | INTC | 458140100 | $231.2K | 0.23% | 5,239 | SH |
| 45 | PROGRESSIVE CORP | PGR | 743315103 | $224.0K | 0.22% | 1,130 | SH |
| 46 | PROCTER & GAMBLE CO | PG | 742718109 | $223.6K | 0.22% | 1,548 | SH |
| 47 | AUTOMATIC DATA PROCESSING IN | ADP | 053015103 | $205.8K | 0.20% | 1,013 | SH |
| 48 | GERON CORP | GERN | 374163103 | $29.8K | 0.03% | 20,000 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2026-03-31 | 2026-05-13 | $102.1M | 48 | 0002109734-26-000004 |
| 2025-12-31 | 2026-02-13 | $105.9M | 48 | 0002109734-26-000002 |