Stembrook Asset Management, LLC
Clone Performance
Feb 2026–Aug 2026 · vs SPYHypothetical growth of buying every stock this filer reported holding, rebalancing on each filing and indexed to the same start. Option positions cannot be bought this way and are left out.
Estimate. 13F holdings are quarter-lagged, so the clone rebalances about 45 days after each period end — when the filing becomes public — and it excludes option and short positions. Returns use comparable raw closes and exclude dividends; a captured split can shorten the simulated window. It tracks 100% of reported value on average across 3 quarters. Past performance does not predict future results.
Portfolio Concentration
43 tracked positions · as of Jun 30, 2026 · Δ vs Mar 31, 2026Portfolio Trend
Sector Breakdown
As of Jun 30, 2026| Sector | % Portfolio | Value |
|---|---|---|
| Technology | 47.1% | $44,404,511 |
| Unclassified | 37.7% | $35,583,649 |
| Financial Services | 4.4% | $4,137,750 |
| Industrials | 2.4% | $2,249,894 |
| Communication Services | 2.2% | $2,076,319 |
| Healthcare | 2.1% | $1,944,198 |
| Energy | 1.6% | $1,513,980 |
| Consumer Cyclical | 1.3% | $1,229,625 |
| Consumer Defensive | 1.3% | $1,215,889 |
Last Quarter's Activity
Export CSVAdded To
Positions the filer increased| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| XOM | ExxonMobil Holdings Corp | +75 | 3,174 | $433,949 | |
| No positions match the current search. | |||||
Trimmed
Positions the filer reduced| Ticker | Company | Δ Shares | Shares | Value | Open |
|---|---|---|---|---|---|
| VEA | Vanguard FTSE Developed Markets ETF | −5,717 | 141,696 | $10,095,840 | |
| SPY | Spdr S&P 500 ETF Trust | −373 | 25,873 | $19,321,180 | |
| VXF | Vanguard Extended Market ETF | −350 | 14,222 | $3,501,598 | |
| QQQ | Invesco Qqq Trust, Series 1 | −309 | 3,619 | $2,665,031 | |
| AAPL | Apple Inc. | −100 | 139,603 | $40,395,524 | |
| BRK-B | Berkshire Hathaway Inc | −23 | 2,855 | $1,428,613 | |
| No positions match the current search. | |||||
Sold Out
Positions the filer fully exited| Ticker | Company | Shares | Value | Open |
|---|---|---|---|---|
| GERN | Geron Corp | 20,000 | $29,800 | |
| No positions match the current search. | ||||
| Ticker | Company | Type | Shares | Value (USD) | % of Portfolio | History |
|---|---|---|---|---|---|---|
| AAPL |
Apple Inc.
Technology
|
Reduced | 139,603 | $40,395,524 | 42.81% | |
| SPY |
Spdr S&P 500 ETF Trust
|
Reduced | 25,873 | $19,321,180 | 20.48% | |
| VEA |
Vanguard FTSE Developed Markets ETF
|
Reduced | 141,696 | $10,095,840 | 10.70% | |
| VXF |
Vanguard Extended Market ETF
|
Reduced | 14,222 | $3,501,598 | 3.71% | |
| QQQ |
Invesco Qqq Trust, Series 1
|
Reduced | 3,619 | $2,665,031 | 2.82% | |
| GOOGL |
Alphabet Inc.
Communication Services
|
Held | 5,810 | $2,076,319 | 2.20% | |
| BRK-B |
Berkshire Hathaway Inc
Financial Services
|
Reduced | 2,855 | $1,428,613 | 1.51% | |
| MSFT |
Microsoft Corp
Technology
|
Held | 2,510 | $936,280 | 0.99% | |
| AMD |
Advanced Micro Devices Inc
Technology
|
Held | 1,344 | $780,743 | 0.83% | |
| INTC |
Intel Corp
Technology
|
Held | 5,239 | $731,521 | 0.78% | |
| COF |
Capital One Financial Corp
Financial Services
|
Held | 3,500 | $702,170 | 0.74% | |
| MPC |
Marathon Petroleum Corp
Energy
|
Held | 2,556 | $653,492 | 0.69% | |
| CSCO |
Cisco Systems, Inc.
Technology
|
Held | 5,293 | $621,715 | 0.66% | |
| UMBF |
Umb Financial Corp
Financial Services
|
Held | 4,269 | $609,442 | 0.65% | |
| AMZN |
Amazon Com Inc
Consumer Cyclical
|
Held | 2,537 | $604,668 | 0.64% | |
| JNJ |
Johnson & Johnson
Healthcare
|
Held | 2,359 | $599,115 | 0.63% | |
| JPM |
Jpmorgan Chase & Co
Financial Services
|
Held | 1,500 | $490,995 | 0.52% | |
| WMT |
Walmart Inc.
Consumer Defensive
|
Held | 4,257 | $482,147 | 0.51% | |
| LLY |
ELI LILLY & Co
Healthcare
|
Held | 401 | $480,971 | 0.51% | |
| GD |
General Dynamics Corp
Industrials
|
Held | 1,233 | $436,777 | 0.46% | |
| XOM |
ExxonMobil Holdings Corp
Energy
|
Added | 3,174 | $433,949 | 0.46% | |
| UNP |
Union Pacific Corp
Industrials
|
Held | 1,553 | $422,416 | 0.45% | |
| NVDA |
Nvidia Corp
Technology
|
Held | 1,797 | $359,561 | 0.38% | |
| ABBV |
AbbVie Inc.
Healthcare
|
Held | 1,417 | $356,573 | 0.38% | |
| ORCL |
Oracle Corp
Technology
|
Held | 2,404 | $352,306 | 0.37% | |
| AXP |
American Express Co
Financial Services
|
Held | 1,028 | $347,721 | 0.37% | |
| LMT |
Lockheed Martin Corp
Industrials
|
Held | 666 | $339,300 | 0.36% | |
| PH |
Parker-Hannifin Corp
Industrials
|
Held | 330 | $322,779 | 0.34% | |
| LOW |
Lowes Companies Inc
Consumer Cyclical
|
Held | 1,444 | $318,387 | 0.34% | |
| SPGI |
S&P Global Inc.
Financial Services
|
Held | 766 | $311,961 | 0.33% | |
| SBUX |
Starbucks Corp
Consumer Cyclical
|
Held | 3,000 | $306,570 | 0.32% | |
| RTX |
RTX Corp
Industrials
|
Held | 1,415 | $268,467 | 0.28% | |
| MRK |
Merck & Co., Inc.
Healthcare
|
Held | 2,040 | $262,140 | 0.28% | |
| PM |
Philip Morris International Inc.
Consumer Defensive
|
Held | 1,426 | $257,977 | 0.27% | |
| KO |
Coca Cola Co
Consumer Defensive
|
Held | 3,061 | $248,767 | 0.26% | |
| PGR |
Progressive Corp/Oh/
Financial Services
|
Held | 1,130 | $246,848 | 0.26% | |
| PFE |
Pfizer Inc
Healthcare
|
Held | 10,191 | $245,399 | 0.26% | |
| CMI |
Cummins Inc
Industrials
|
NEW | 340 | $242,491 | 0.26% | |
| PG |
PROCTER & GAMBLE Co
Consumer Defensive
|
Held | 1,548 | $226,998 | 0.24% | |
| ADP |
Automatic Data Processing Inc
Technology
|
Held | 1,013 | $226,861 | 0.24% | |
| CVX |
Chevron Corp
Energy
|
Held | 1,332 | $220,792 | 0.23% | |
| GWW |
W.W. Grainger, Inc.
Industrials
|
NEW | 160 | $217,664 | 0.23% | |
| VLO |
Valero Energy Corp/Tx
Energy
|
NEW | 790 | $205,747 | 0.22% |
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.