Carderock Capital Management Inc holds a diversified book of 67 reported positions worth $455.8M as of Q2 2026 (disclosed Jul 7, 2026, a ~7-day 13F lag). This quarter they opened Eaton Corp PLC and trimmed Lam Research Corp. Their largest long position is Lam Research Corp at 7% of the reported non-option book. Cloning the disclosed picks since 2024 would be +7% (+3.8%/yr). That is a simulation of the disclosed long book, not audited returns.
Growth of $10,000 cloning Carderock Capital Management Inc's disclosed long 13F book, rebalanced on each filing date (so it reflects each quarter's actual reporting lag, ~7 days for the latest filing, with no look-ahead), total-return basis (dividends reinvested), derived from end-of-day prices. “Their reported book” values the same picks from quarter-end, before they were public. S&P 500 is SPY total return over the same window. Excludes shorts, cash, options and non-13F holdings. Not investment advice.
Top-heavy: diversified book
Share of the disclosed book in its largest positions. A higher top-5 share means a more concentrated, higher-conviction portfolio.
100% mapped to company sectors
+4 sectors below the cut, 2% together
Direct operating-company sectors from our SIC-based security master. ETF/fund and unclassified holdings stay visible separately; this is not ETF look-through exposure.
Estimated $ traded · quarter-end prices (an exit at the prior quarter-end), no cost basis
Other tracked managers holding the same core names as Carderock Capital Management Inc
| Manager / fund | Shared names | Their $ in those |
|---|---|---|
| Mirae Asset Global Investments Co., Ltd. | 62 / 67 | $276.2B |
| New World Advisors LLC | 24 / 67 | $456.9M |
| Emerald Advisors, LLC | 18 / 67 | $615.4M |
| Hikari Tsushin, Inc. | 13 / 67 | $1.1B |
| Armstrong Henry H Associates Inc | 18 / 67 | $760.5M |
| Independent Investors Inc | 15 / 67 | $375.4M |
| Prospect Hill Management, LLC | 6 / 67 | $179.1M |
| Daniel Investment Group, Inc. | 8 / 67 | $110.6M |
Ranked by the share of each fund's own book sitting in the names it shares with Carderock Capital Management Inc: only funds sharing at least a tenth of the book qualify. Index giants, bank custody books and market makers are excluded. They hold everything, so their overlap says nothing.
Bars show each position's share of the portfolio. Click a row for its position history.
| # | Security | Value | Shares | % Port | Last move | History |
|---|---|---|---|---|---|---|
| 1 | Lam Research Corp COM NEW | $32.0M | 73.8K | 7.0% | ▼−23% Reduced · −22K sh | |
| 2 | Alphabet Inc CAP STK CL A | $20.2M | 56.5K | 4.4% | ▼−2.2% Reduced · −1K sh | |
| 3 | Amphenol Corp CL A | $18.8M | 106.6K | 4.1% | ▼−6.1% Reduced · −7K sh | |
| 4 | Eli Lilly & Co COM | $15.4M | 12.8K | 3.4% | ▲+1.9% Added · +236 sh | |
| 5 | Apple Inc COM | $15.0M | 51.9K | 3.3% | ▼−1.5% Reduced · −802 sh | |
| 6 | Heico Corp New COM | $14.3M | 40.1K | 3.1% | ▲+6.8% Added · +3K sh | |
| 7 | Monolithic PWR Sys Inc COM | $14.2M | 10.3K | 3.1% | ▼−12% Reduced · −1K sh | |
| 8 | Quanta Svcs Inc COM | $14.1M | 19.6K | 3.1% | ▼−14% Reduced · −3K sh | |
| 9 | Fortinet Inc COM | $14.0M | 91.4K | 3.1% | ▲+0.3% Added · +291 sh | |
| 10 | Mastercard Incorporated CL A | $12.5M | 24.4K | 2.7% | ▲+6.1% Added · +1K sh | |
| 11 | Monster Beverage Corp New COM | $12.0M | 124.3K | 2.6% | ▲+6.7% Added · +8K sh | |
| 12 | Nvidia Corporation COM | $11.3M | 56.5K | 2.5% | ▲+5.5% Added · +3K sh | |
| 13 | Ametek Inc COM | $11.1M | 45.8K | 2.4% | ▲+0.8% Added · +345 sh | |
| 14 | Parker-Hannifin Corp COM | $10.9M | 11.1K | 2.4% | ▼−1.8% Reduced · −207 sh | |
| 15 | Thermo Fisher Scientific Inc COM | $10.5M | 20.9K | 2.3% | ▼−1.9% Reduced · −409 sh | |
| 16 | Microsoft Corp COM | $10.2M | 27.4K | 2.2% | ▲+1.9% Added · +507 sh | |
| 17 | Costco Wholesale Corporation COM | $10.1M | 10.8K | 2.2% | ▲+11% Added · +1K sh | |
| 18 | Federal Signal Corp COM | $9.6M | 74.8K | 2.1% | ▲+119% Added · +41K sh | |
| 19 | WW Grainger Inc COM | $9.4M | 6.9K | 2.1% | ▲+12% Added · +760 sh | |
| 20 | Cadence Design System Inc COM | $9.3M | 24.9K | 2.1% | ▼−8.8% Reduced · −2K sh | |
| 21 | Oreilly Automotive Inc COM | $9.3M | 101.1K | 2.0% | ▼−1.2% Reduced · −1K sh | |
| 22 | Idexx Labs Inc COM | $8.8M | 16.6K | 1.9% | ▲+1.0% Added · +161 sh | |
| 23 | Sherwin Williams Co COM | $8.7M | 25.4K | 1.9% | ▲+6.0% Added · +1K sh | |
| 24 | Steris PLC SHS USD | $8.4M | 40.1K | 1.9% | ▲+3.5% Added · +1K sh | |
| 25 | Linde PLC SHS | $8.1M | 15.6K | 1.8% | ▲+5.1% Added · +761 sh | |
| 26 | Motorola Solutions Inc COM NEW | $7.9M | 19.1K | 1.7% | ▲+6.8% Added · +1K sh | |
| 27 | Aon PLC SHS CL A | $7.8M | 23.6K | 1.7% | ▲+9.1% Added · +2K sh | |
| 28 | Cintas Corp COM | $7.5M | 44.0K | 1.6% | ▼−3.4% Reduced · −2K sh | |
| 29 | Intuitive Surgical Inc COM NEW | $7.2M | 18.2K | 1.6% | ▼−1.8% Reduced · −332 sh | |
| 30 | Home Depot Inc COM | $7.1M | 20.0K | 1.6% | ▼−0.8% Reduced · −158 sh | |
| 31 | Air Products And Chemicals I COM | $6.9M | 23.5K | 1.5% | ▼−5.1% Reduced · −1K sh | |
| 32 | Arch Cap Group Ltd ORD | $6.8M | 70.3K | 1.5% | ▼−1.5% Reduced · −1K sh | |
| 33 | Stryker Corporation COM | $6.8M | 21.6K | 1.5% | ▲+6.4% Added · +1K sh | |
| 34 | S&P Global Inc COM | $6.7M | 16.4K | 1.5% | ▼−28% Reduced · −6K sh | |
| 35 | Illinois Tool WKS Inc COM | $6.6M | 24.4K | 1.4% | ▲+0.9% Added · +227 sh | |
| 36 | Moodys Corp COM | $6.2M | 13.8K | 1.4% | ▼−19% Reduced · −3K sh | |
| 37 | Waste Connections Inc COM | $5.8M | 35.0K | 1.3% | ▲+4.2% Added · +1K sh | |
| 38 | Ingersoll Rand Inc COM | $5.3M | 65.2K | 1.2% | ▲+0.9% Added · +597 sh | |
| 39 | Automatic Data Processing In COM | $5.3M | 23.6K | 1.2% | ▼−31% Reduced · −11K sh | |
| 40 | TJX Cos Inc New COM | $5.2M | 34.5K | 1.1% | ▲+23% Added · +6K sh | |
| 41 | Walmart Inc COM | $5.1M | 44.8K | 1.1% | ▲+12% Added · +5K sh | |
| 42 | Watsco Inc COM | $4.8M | 11.5K | 1.1% | ▲+216% Added · +8K sh | |
| 43 | Intel Corp COM | $4.5M | 32.0K | 1.0% | —Held | |
| 44 | Eaton Corp PLC SHS | $3.9M | 9.2K | 0.9% | ▲New New position | |
| 45 | Gallagher Arthur J & Co COM | $3.7M | 16.3K | 0.8% | ▲New New position | |
| 46 | Waters Corp COM | $2.8M | 7.4K | 0.6% | ▲New New position | |
| 47 | Berkshire Hathaway Inc Del CL A | $2.2M | 3 | 0.5% | —Held | |
| 48 | Loews Corp COM | $1.4M | 12.0K | 0.3% | —Held | |
| 49 | Exxon Mobil Corp COM | $989K | 7.2K | 0.2% | ▼−29% Reduced · −3K sh | |
| 50 | Intuit COM | $889K | 3.4K | 0.2% | ▼−78% Reduced · −12K sh |
This fund page is the Follow view. The Build view lets your agent pull holdings, quarter changes, overlap, and source filings through API or MCP.
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Use Arkolith to show CARDEROCK CAPITAL MANAGEMENT INC's latest holdings, largest changes, and filing provenance.
As-of date vs the date the SEC received each filing
Reported 13F total per quarter. Raw filing totals can include option notional.
| Quarter | As of | Filed | Lag | Positions | Value | Form |
|---|---|---|---|---|---|---|
| Q2 2026 | Jun 30, 2026 | Jul 7, 2026 | 7d | 67 | $455.8M | 13F-HR |
| Q1 2026 | Mar 31, 2026 | Apr 10, 2026 | 10d | 73 | $404.8M | 13F-HR |
| Q4 2025 | Dec 31, 2025 | Jan 9, 2026 | 9d | 69 | $412.7M | 13F-HR |
| Q3 2025 | Sep 30, 2025 | Oct 17, 2025 | 17d | 72 | $411.3M | 13F-HR |
| Q2 2025 | Jun 30, 2025 | Jul 10, 2025 | 10d | 139 | $390.4M | 13F-HR |
| Q1 2025 | Mar 31, 2025 | May 27, 2025 | 57d | 70 | $377.3M | 13F-HR |
| Q4 2024 | Dec 31, 2024 | Jan 15, 2025 | 15d | 73 | $398.7M | 13F-HR |
| Q3 2024 | Sep 30, 2024 | Oct 16, 2024 | 16d | 73 | $423.6M | 13F-HR |
Holdings from SEC EDGAR 13F-HR filings, updated quarterly, filed up to 45 days after quarter-end. Public domain. Book totals and portfolio weights cover reported non-option positions, which can include notes and warrants. Disclosed put/call options are listed separately and excluded from those totals. The performance line is a simulation of the disclosed long book, not an audited return.