Carderock Capital Management Inc.
In its 13F for Q1 2026 (holdings as of March 31, 2026, filed April 10, 2026), Carderock Capital Management Inc. reported 73 stock positions worth $404.8 million. Its top holding was Lam Research (LRCX) at 5.1% of the portfolio, followed by Alphabet Class A (GOOGL, 4.1%) and Amphenol Class A (APH, 3.5%). Compared with Q4 2025, it opened 8 new positions, sold out of 4, added to 35 and reduced 19. The biggest buy was Motorola Solutions (MSI, shares +57%) and the biggest sale Fair Isaac (FICO, shares −48%).
- Most Recent 13F
- Q2 2026
- Location
- CHEVY CHASE, MD
- CIK
- 0001168889
- Portfolio Value
- $404.8M (Q1 2026)
- SEC Filing
- 0001941040-26-000214 ↗ filed Apr 10, 2026
Holdings Value
Holdings 73 stocks · $404.8M
| LRCX Lam Research Corp. | 5.06% | 95,798 | $20.5M | Reduce -9.6% |
| GOOGL Alphabet Inc. Class A | 4.10% | 57,782 | $16.6M | Reduce -1.5% |
| APH Amphenol Corp. Class A | 3.54% | 113,454 | $14.3M | Reduce -8.3% |
| AAPL Apple Inc. | 3.30% | 52,711 | $13.4M | Add +2.7% |
| MPWR Monolithic Power Systems Inc. | 3.15% | 11,665 | $12.8M | Add +1.7% |
| PWR Quanta Services Inc. | 3.10% | 22,869 | $12.6M | Reduce -4.4% |
| LLY Eli Lilly & Co. | 2.86% | 12,582 | $11.6M | Add +3.3% |
| MA Mastercard Inc. Class A | 2.83% | 22,964 | $11.5M | Add +2.3% |
| TMO Thermo Fisher Scientific Inc. | 2.58% | 21,269 | $10.5M | Add +1.2% |
| HEI Heico Corp. | 2.54% | 37,525 | $10.3M | Add +0.6% |
| PH Parker Hannifin Corp. | 2.50% | 11,319 | $10.1M | Add +0.6% |
| MSFT Microsoft Corp. | 2.46% | 26,928 | $10.0M | Add +2.5% |
| AME Ametek Inc. | 2.41% | 45,496 | $9.8M | Add +3.9% |
| COST Costco Wholesale Corp. | 2.39% | 9,716 | $9.7M | Add +2.4% |
| SPGI S&P Global Inc. | 2.37% | 22,567 | $9.6M | Reduce -2.9% |
| ORLY O'reilly Automotive Inc. | 2.33% | 102,303 | $9.4M | Reduce -0.6% |
| NVDA Nvidia Corp. | 2.31% | 53,610 | $9.3M | Add +13.4% |
| IDXX Idexx Laboratories Inc. | 2.29% | 16,466 | $9.3M | Reduce -1.8% |
| STE Steris PLC | 2.12% | 38,751 | $8.6M | Add +4.5% |
| ISRG Intuitive Surgical Inc. | 2.11% | 18,539 | $8.5M | Add +1.6% |
| MNST Monster Beverage Corp. | 2.09% | 116,496 | $8.4M | Add +2.2% |
| MSI Motorola Solutions Inc. | 1.91% | 17,857 | $7.7M | Add +56.5% |
| CTAS Cintas Corp. | 1.90% | 45,525 | $7.7M | Reduce -0.9% |
| SHW The Sherwin-Williams Co. | 1.90% | 23,948 | $7.7M | Reduce -0.2% |
| CDNS Cadence Design SYS Inc. | 1.87% | 27,308 | $7.6M | Add +0.5% |
| FTNT Fortinet Inc. | 1.84% | 91,109 | $7.4M | Reduce -3.2% |
| MCO Moody's Corp. | 1.84% | 17,063 | $7.4M | Reduce -2.9% |
| LIN Linde PLC | 1.82% | 14,845 | $7.4M | Add +48.9% |
| APD Air Products & Chemicals Inc. | 1.78% | 24,758 | $7.2M | Add +17.9% |
| ADP Automatic Data Processing | 1.73% | 34,373 | $7.0M | Add +2.6% |
| AON Aon PLC Class A | 1.72% | 21,586 | $7.0M | Reduce -3.8% |
| ACGL Arch Capital Group Ltd. | 1.69% | 71,435 | $6.9M | Add +2.2% |
| INTU Intuit Inc. | 1.66% | 15,572 | $6.7M | Add +31.2% |
| SYK Stryker Corp. | 1.65% | 20,338 | $6.7M | Add +4.5% |
| GWW WW Grainger Inc. | 1.65% | 6,114 | $6.7M | Add +1.9% |
| HD Home Depot Inc. | 1.64% | 20,190 | $6.6M | Reduce -0.1% |
| ITW Illinois Tool Works | 1.56% | 24,193 | $6.3M | Add +2.4% |
| LDOS Leidos Holdings Inc. | 1.38% | 35,952 | $5.6M | Add +1.3% |
| WCN Waste Connections Inc. | 1.35% | 33,628 | $5.5M | Add +1.3% |
| IR Ingersoll-Rand Inc. | 1.28% | 64,626 | $5.2M | Add +2.8% |
| WMT Walmart Inc. | 1.23% | 40,040 | $5.0M | Add +171.7% |
| DHR Danaher Corp. | 1.19% | 25,451 | $4.8M | Add +4.0% |
| TJX TJX Companies Inc. filed as TJX COS INC NEW | 1.11% | 28,118 | $4.5M | Add +137.2% |
| FSS Federal Signal Corp. | 0.91% | 34,202 | $3.7M | Add +119.4% |
| FICO Fair Isaac Corp. | 0.72% | 2,736 | $2.9M | Reduce -47.8% |
| BRK.A Berkshire Hathaway Inc. Class A | 0.53% | 3 | $2.2M | New |
| XOM Exxon Mobil Corp. | 0.43% | 10,208 | $1.7M | Reduce -3.8% |
| INTC Intel Corp. | 0.35% | 32,000 | $1.4M | New |
| WSO Watsco Inc. | 0.33% | 3,650 | $1.3M | Add +29.3% |
| L Loews Corp. | 0.32% | 12,000 | $1.3M | New |
| CHD Church & Dwight Co. Inc. | 0.22% | 9,598 | $896K | Reduce -44.9% |
| CVX Chevron Corp. | 0.21% | 4,182 | $865K | No change |
| BRK.B Berkshire Hathaway Inc. Class B | 0.18% | 1,500 | $719K | Add +91.1% |
| MAR Marriott International Class A | 0.17% | 2,043 | $668K | Reduce -4.7% |
| JPM JPMorgan Chase & Co. | 0.16% | 2,251 | $662K | Add +244.2% |
| DRI Darden Restaurants Inc. | 0.15% | 3,000 | $588K | New |
| IYW iShares Ustechnology ETF | 0.13% | 2,875 | $522K | No change |
| WDFC WD-40 Co. | 0.10% | 2,000 | $408K | New |
| JNJ Johnson & Johnson | 0.08% | 1,325 | $324K | No change |
| TROW T Rowe Price Group Inc. filed as PRICE T ROWE GROUP INC | 0.08% | 3,450 | $311K | No change |
| GIS General Mills Inc. | 0.07% | 8,000 | $298K | New |
| DLR Digital Realty Trust Inc. | 0.07% | 1,600 | $288K | No change |
| PAYX Paychex Inc. | 0.07% | 2,950 | $272K | No change |
| HON Honeywell International Inc. | 0.06% | 1,089 | $246K | Reduce -2.2% |
| DNP DNP Select Income Fund Inc. | 0.06% | 23,604 | $243K | No change |
| BMY Bristol-Myers Squibb Co. | 0.06% | 4,000 | $243K | New |
| DVY iShares Select Dividend ETF | 0.06% | 1,600 | $242K | No change |
| CSX CSX Corp. | 0.06% | 5,700 | $234K | No change |
| ACN Accenture PLC Class A | 0.06% | 1,155 | $229K | Reduce -74.9% |
| CMG Chipotle Mexican Grill Inc. | 0.06% | 7,091 | $227K | Add +14.5% |
| AZO AutoZone Inc. | 0.05% | 65 | $220K | No change |
| RTX RTX Corp. | 0.05% | 1,125 | $217K | No change |
| KO The Coca-Cola Co. | 0.05% | 2,850 | $217K | New |
Portfolio Sells Q4 2025 → Q1 2026
| FICO Fair Isaac Corp. | Reduce -47.8% | 0.72% | −1.43 |
| ROP Roper Technologies Inc. | Sold out | 0.00% | −0.72 |
| BMI Badger Meter Inc. | Sold out | 0.00% | −0.59 |
| SPGI S&P Global Inc. | Reduce -2.9% | 2.37% | −0.57 |
| APH Amphenol Corp. Class A | Reduce -8.3% | 3.54% | −0.51 |
| IDXX Idexx Laboratories Inc. | Reduce -1.8% | 2.29% | −0.46 |
| GOOGL Alphabet Inc. Class A | Reduce -1.5% | 4.10% | −0.34 |
| MCO Moody's Corp. | Reduce -2.9% | 1.84% | −0.34 |
| ACN Accenture PLC Class A | Reduce -74.9% | 0.06% | −0.24 |
| AON Aon PLC Class A | Reduce -3.8% | 1.72% | −0.20 |
| CTAS Cintas Corp. | Reduce -0.9% | 1.90% | −0.19 |
| CHD Church & Dwight Co. Inc. | Reduce -44.9% | 0.22% | −0.13 |
| FISV Fiserv Inc. | Sold out | 0.00% | −0.10 |
| ABT Abbott Laboratories | Sold out | 0.00% | −0.06 |
| HD Home Depot Inc. | Reduce -0.1% | 1.64% | −0.04 |
| MAR Marriott International Class A | Reduce -4.7% | 0.17% | +0.00 |
| HON Honeywell International Inc. | Reduce -2.2% | 0.06% | +0.01 |
| SHW The Sherwin-Williams Co. | Reduce -0.2% | 1.90% | +0.01 |
| FTNT Fortinet Inc. | Reduce -3.2% | 1.84% | +0.03 |
| ORLY O'reilly Automotive Inc. | Reduce -0.6% | 2.33% | +0.06 |
| XOM Exxon Mobil Corp. | Reduce -3.8% | 0.43% | +0.12 |
| PWR Quanta Services Inc. | Reduce -4.4% | 3.10% | +0.66 |
| LRCX Lam Research Corp. | Reduce -9.6% | 5.06% | +0.66 |
Portfolio Buys Q4 2025 → Q1 2026
| MSI Motorola Solutions Inc. | Add +56.5% | 1.91% | +0.85 |
| WMT Walmart Inc. | Add +171.7% | 1.23% | +0.83 |
| LIN Linde PLC | Add +48.9% | 1.82% | +0.79 |
| TJX TJX Companies Inc. | Add +137.2% | 1.11% | +0.67 |
| MPWR Monolithic Power Systems Inc. | Add +1.7% | 3.15% | +0.63 |
| BRK.A Berkshire Hathaway Inc. Class A | New | 0.53% | +0.53 |
| APD Air Products & Chemicals Inc. | Add +17.9% | 1.78% | +0.52 |
| FSS Federal Signal Corp. | Add +119.4% | 0.91% | +0.50 |
| COST Costco Wholesale Corp. | Add +2.4% | 2.39% | +0.41 |
| INTC Intel Corp. | New | 0.35% | +0.35 |
| L Loews Corp. | New | 0.32% | +0.32 |
| AME Ametek Inc. | Add +3.9% | 2.41% | +0.23 |
| GWW WW Grainger Inc. | Add +1.9% | 1.65% | +0.18 |
| NVDA Nvidia Corp. | Add +13.4% | 2.31% | +0.17 |
| DRI Darden Restaurants Inc. | New | 0.15% | +0.15 |
| ITW Illinois Tool Works | Add +2.4% | 1.56% | +0.14 |
| JPM JPMorgan Chase & Co. | Add +244.2% | 0.16% | +0.11 |
| PH Parker Hannifin Corp. | Add +0.6% | 2.50% | +0.11 |
| WDFC WD-40 Co. | New | 0.10% | +0.10 |
| WSO Watsco Inc. | Add +29.3% | 0.33% | +0.10 |
| BRK.B Berkshire Hathaway Inc. Class B | Add +91.1% | 0.18% | +0.08 |
| GIS General Mills Inc. | New | 0.07% | +0.07 |
| IR Ingersoll-Rand Inc. | Add +2.8% | 1.28% | +0.07 |
| ACGL Arch Capital Group Ltd. | Add +2.2% | 1.69% | +0.07 |
| BMY Bristol-Myers Squibb Co. | New | 0.06% | +0.06 |
| KO The Coca-Cola Co. | New | 0.05% | +0.05 |
| CMG Chipotle Mexican Grill Inc. | Add +14.5% | 0.06% | +0.00 |
| SYK Stryker Corp. | Add +4.5% | 1.65% | −0.01 |
| MNST Monster Beverage Corp. | Add +2.2% | 2.09% | −0.03 |
| WCN Waste Connections Inc. | Add +1.3% | 1.35% | −0.06 |
| AAPL Apple Inc. | Add +2.7% | 3.30% | −0.08 |
| STE Steris PLC | Add +4.5% | 2.12% | −0.16 |
| DHR Danaher Corp. | Add +4.0% | 1.19% | −0.16 |
| LDOS Leidos Holdings Inc. | Add +1.3% | 1.38% | −0.17 |
| CDNS Cadence Design SYS Inc. | Add +0.5% | 1.87% | −0.18 |
| INTU Intuit Inc. | Add +31.2% | 1.66% | −0.24 |
| MA Mastercard Inc. Class A | Add +2.3% | 2.83% | −0.27 |
| LLY Eli Lilly & Co. | Add +3.3% | 2.86% | −0.31 |
| ADP Automatic Data Processing | Add +2.6% | 1.73% | −0.36 |
| TMO Thermo Fisher Scientific Inc. | Add +1.2% | 2.58% | −0.37 |
| HEI Heico Corp. | Add +0.6% | 2.54% | −0.38 |
| ISRG Intuitive Surgical Inc. | Add +1.6% | 2.11% | −0.39 |
| MSFT Microsoft Corp. | Add +2.5% | 2.46% | −0.62 |
All Filings
| Quarter | Positions | 13F Reported Value | Top Holdings |
|---|---|---|---|
| Q2 2026 | 67 | $455.8M | LRCX, GOOGL, APH, LLY, AAPL |
| Q1 2026 | 73 | $404.8M | LRCX, GOOGL, APH, AAPL, MPWR |
| Q4 2025 | 69 | $412.7M | GOOGL, LRCX, APH, AAPL, LLY |
| Q3 2025 | 72 | $411.3M | APH, LRCX, MSFT, GOOGL, HEI |
| Q2 2025 | 139 | $390.4M | APH, MSFT, HEI, LRCX, MA |
| Q1 2025 | 70 | $377.3M | MA, AAPL, ISRG, FISV, CTAS |
| Q4 2024 | 73 | $398.7M | AAPL, MSFT, MA, GOOGL, APH |
| Q3 2024 | 73 | $423.6M | AAPL, MSFT, CTAS, PH, FICO |
| Q2 2024 | 69 | $382.2M | MSFT, AAPL, GOOGL, APH, LRCX |
| Q1 2024 | 68 | $356.8M | MSFT, MA, PH, CTAS, LRCX |