CIK: 0002109734
Total reported value
$102.1M
Reporting period: 2026-03-31 · Number of holdings: 48
Stembrook Asset Management, LLC disclosed 48 holdings in its latest 13F filing for the period ending 2026-03-31, with total reported value of $102.1M and a quarterly turnover rate of 6.3%.
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Stembrook Asset Management, LLC's disclosed holdings carry a Herfindahl concentration index of 0.171 — mathematically equivalent to about 6 equally-sized positions, well below its 48 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes vary widely across the portfolio (a coefficient of variation of 2.72), with a handful of outsized bets alongside many smaller positions.
Recent activity leans toward adding more aggressively to already-large existing positions than to newly initiated ones (a 5.3 percentage-point tilt) — a pattern consistent with a momentum-following approach.
Sector classification currently covers about 50% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Trim AAPL
0.0% -$2.5M
Add VEA
-1.1% $132.3K
Add BND
+2.4% $147.9K
Trim MSFT
0.0% -$284.8K
Add MPC
0.0% $208.4K
Add VTEB
+0.1% -$51.0K
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | AAPL | Apple INC | Stock-Tech | 34.72% | -1.16% | — | |
| 2 | SPY | Ss Spdr S&p 500 ETF Trust-us | ETF-Large Cap & Growth | 16.71% | +0.03% | +1.36% | |
| 3 | VEA | Vanguard Ftse Developed ETF | ETF-Other | 9.25% | +0.45% | -1.13% | |
| 4 | BND | Vanguard Total Bond Market | ETF-Other | 8.29% | +0.43% | +2.37% | |
| 5 | VTEB | Vanguard Tax-exempt Bond ETF | ETF-Other | 6.88% | +0.20% | +0.07% | |
| 6 | VXF | Vanguard Extended Market ETF | ETF-Other | 2.94% | +0.09% | +0.85% | |
| 7 | QQQ | Invesco Qqq Trust Series 1 | ETF-Tech | 2.22% | -0.03% | +1.11% | |
| 8 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 1.64% | -0.08% | — | |
| 9 | VBR | Vanguard Small-cap Value ETF | ETF-Other | 1.35% | +0.07% | -0.44% | |
| 10 | BRK-B | Berkshire Hathaway Inc-cl B | Stock-Other | 1.35% | -0.05% | -2.04% | |
| 11 | VWO | Vanguard Ftse Emerging Marke | ETF-Emerging Markets | 1.26% | +0.05% | +0.42% | |
| 12 | MSFT | Microsoft CORP | Stock-Tech | 0.91% | -0.24% | — | |
| 13 | COF | Capital One Financial CORP | Stock-Financials | 0.63% | -0.17% | — | |
| 14 | MPC | Marathon Petroleum CORP | Stock-Energy | 0.61% | +0.22% | — | |
| 15 | JNJ | Johnson & Johnson | Stock-Healthcare | 0.56% | +0.10% | — | |
| 16 | SCHX | Schwab US Large-cap ETF | ETF-Other | 0.55% | — | +0.41% | |
| 17 | WMT | Walmart INC | Stock-Consumer Staples | 0.52% | +0.07% | — | |
| 18 | AMZN | Amazon.com INC | Stock-Consumer Disc | 0.52% | -0.03% | — | |
| 19 | XOM | Exxon Mobil CORP | Stock-Energy | 0.51% | +0.16% | — | |
| 20 | UMBF | Umb Financial CORP | Stock-Financials | 0.47% | +0.01% | — | |
| 21 | JPM | Jpmorgan Chase & Co | Stock-Financials | 0.43% | -0.03% | — | |
| 22 | GD | General Dynamics CORP | Stock-Industrials | 0.41% | +0.02% | — | |
| 23 | CSCO | Cisco Systems INC | Stock-Tech | 0.40% | +0.01% | — | |
| 24 | LMT | Lockheed Martin CORP | Stock-Industrials | 0.39% | +0.09% | — | |
| 25 | UNP | Union Pacific CORP | Stock-Industrials | 0.37% | +0.03% | — | |
| 26 | SCHF | Schwab Intl Equity ETF | ETF-Other | 0.37% | — | -6.66% | |
| 27 | LLY | Eli Lilly & Co | Stock-Healthcare | 0.36% | -0.05% | — | |
| 28 | ORCL | Oracle CORP | Stock-Tech | 0.35% | -0.09% | — | |
| 29 | LOW | Lowe's Cos INC | Stock-Consumer Disc | 0.33% | — | — | |
| 30 | SPGI | S&p Global INC | Stock-Financials | 0.32% | -0.06% | — | |
| 31 | NVDA | Nvidia CORP | Stock-Tech | 0.31% | -0.01% | — | |
| 32 | AXP | American Express Co | Stock-Financials | 0.30% | -0.06% | — | |
| 33 | ABBV | Abbvie INC | Stock-Healthcare | 0.30% | -0.01% | — | |
| 34 | PH | Parker Hannifin CORP | Stock-Industrials | 0.29% | +0.02% | — | |
| 35 | PFE | Pfizer INC | Stock-Healthcare | 0.28% | +0.04% | — | |
| 36 | CVX | Chevron CORP | Stock-Energy | 0.27% | +0.08% | — | |
| 37 | AMD | Advanced Micro Devices | Stock-Tech | 0.27% | — | — | |
| 38 | RTX | Rtx CORP | Stock-Industrials | 0.27% | +0.02% | — | |
| 39 | SBUX | Starbucks CORP | Stock-Consumer Disc | 0.26% | +0.02% | — | |
| 40 | MRK | Merck & Co. INC. | Stock-Healthcare | 0.24% | +0.04% | — | |
| 41 | PM | Philip Morris International | Stock-Consumer Staples | 0.23% | +0.01% | — | |
| 42 | KO | Coca-cola Co/the | Stock-Consumer Staples | 0.23% | +0.03% | — | |
| 43 | SCHA | Schwab US Small-cap ETF | ETF-Other | 0.23% | +0.01% | -1.09% | |
| 44 | INTC | Intel CORP | Stock-Tech | 0.23% | +0.23% | NEW | |
| 45 | PGR | Progressive CORP | Stock-Financials | 0.22% | -0.02% | — | |
| 46 | PG | Procter & Gamble Co/the | Stock-Consumer Staples | 0.22% | +0.01% | — | |
| 47 | ADP | Automatic Data Processing | Stock-Tech | 0.20% | -0.05% | — | |
| 48 | GERN | Geron CORP | Stock-Other | 0.03% | +0.03% | NEW |
Performance for Q3 2026
+10.8%
Performance Last 4 Quarters
+14.3%
Based on 5 months of available history
Based on 87% of reported portfolio value with available pricing
Stembrook Asset Management, LLC's most significant position changes for 2026-03-31: Sold out: Salesforce INC (CRM); New buy: Intel CORP (INTC); Sold out: Bitwise 10 Crypto Index ETF (BITW); New buy: Geron CORP (GERN); Trim: Vanguard Ftse Developed ETF (VEA) — shares -1.13%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | VEA | Vanguard Ftse Developed ETF | +0.5% | -1.13% | Trim |
| 2 | BND | Vanguard Total Bond Market | +0.4% | +2.37% | Add |
| 3 | MPC | Marathon Petroleum CORP | +0.2% | — | Unchanged |
| 4 | VTEB | Vanguard Tax-exempt Bond ETF | +0.2% | +0.07% | Add |
| 5 | XOM | Exxon Mobil CORP | +0.2% | — | Unchanged |
| 6 | JNJ | Johnson & Johnson | +0.1% | — | Unchanged |
| 7 | LMT | Lockheed Martin CORP | +0.1% | — | Unchanged |
| 8 | VXF | Vanguard Extended Market ETF | +0.1% | +0.85% | Add |
| 9 | CVX | Chevron CORP | +0.1% | — | Unchanged |
| 10 | WMT | Walmart INC | +0.1% | — | Unchanged |
| 11 | VBR | Vanguard Small-cap Value ETF | +0.1% | -0.44% | Trim |
| 12 | VWO | Vanguard Ftse Emerging Marke | +0.1% | +0.42% | Add |
| 13 | PFE | Pfizer INC | 0% | — | Unchanged |
| 14 | MRK | Merck & Co. INC. | 0% | — | Unchanged |
| 15 | SPY | Ss Spdr S&p 500 ETF Trust-us | 0% | +1.36% | Add |
| 16 | KO | Coca-cola Co/the | 0% | — | Unchanged |
| 17 | UNP | Union Pacific CORP | 0% | — | Unchanged |
| 18 | SBUX | Starbucks CORP | 0% | — | Unchanged |
| 19 | RTX | Rtx CORP | 0% | — | Unchanged |
| 20 | GD | General Dynamics CORP | 0% | — | Unchanged |
| 21 | PH | Parker Hannifin CORP | 0% | — | Unchanged |
| 22 | UMBF | Umb Financial CORP | 0% | — | Unchanged |
| 23 | PM | Philip Morris International | 0% | — | Unchanged |
| 24 | CSCO | Cisco Systems INC | 0% | — | Unchanged |
| 25 | SCHA | Schwab US Small-cap ETF | 0% | -1.09% | Trim |
| 26 | PG | Procter & Gamble Co/the | 0% | — | Unchanged |
| 27 | SCHX | Schwab US Large-cap ETF | — | +0.41% | Add |
| 28 | SCHF | Schwab Intl Equity ETF | — | -6.66% | Trim |
| 29 | AMD | Advanced Micro Devices | — | — | Unchanged |
| 30 | LOW | Lowe's Cos INC | — | — | Unchanged |
| 31 | NVDA | Nvidia CORP | 0% | — | Unchanged |
| 32 | ABBV | Abbvie INC | 0% | — | Unchanged |
| 33 | PGR | Progressive CORP | 0% | — | Unchanged |
| 34 | QQQ | Invesco Qqq Trust Series 1 | 0% | +1.11% | Add |
| 35 | AMZN | Amazon.com INC | 0% | — | Unchanged |
| 36 | JPM | Jpmorgan Chase & Co | 0% | — | Unchanged |
| 37 | BRK-B | Berkshire Hathaway Inc-cl B | -0.1% | -2.04% | Trim |
| 38 | LLY | Eli Lilly & Co | -0.1% | — | Unchanged |
| 39 | ADP | Automatic Data Processing | -0.1% | — | Unchanged |
| 40 | SPGI | S&p Global INC | -0.1% | — | Unchanged |
| 41 | AXP | American Express Co | -0.1% | — | Unchanged |
| 42 | GOOGL | Alphabet Inc-cl A | -0.1% | — | Unchanged |
| 43 | ORCL | Oracle CORP | -0.1% | — | Unchanged |
| 44 | COF | Capital One Financial CORP | -0.2% | — | Unchanged |
| 45 | MSFT | Microsoft CORP | -0.2% | — | Unchanged |
| 46 | AAPL | Apple INC | -1.2% | — | Unchanged |
| 47 | CRM | Salesforce INC | — | EXIT | Sold out |
| 48 | INTC | Intel CORP | — | NEW | New buy |
| 49 | BITW | Bitwise 10 Crypto Index ETF | — | EXIT | Sold out |
| 50 | GERN | Geron CORP | — | NEW | New buy |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-03-31 | 2026-05-13 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-02-13 | 13F-HR | View on EDGAR |
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