STONE RUN CAPITAL, LLC
Reported holdings as of Q3 2025, from 28 quarterly filings.
This filer last reported in Q3 2025; the most recent quarter on file across all filers is Q2 2026. Firms that restructure stop filing under one CIK and start under another, so a successor entity may hold these positions now under a similar name.
Holdings
| Security | Ticker | Value | Shares | Weight | Weight change | Held | Change |
|---|---|---|---|---|---|---|---|
| AMPHENOL CORP | APH | $11.8M | 95,320 | +0.78pp | 23q | -2.6%-$309.4K | |
| HEICO CORP NEW | HEI | $11.4M | 35,466 | -0.14pp | 28q | HELD | |
| BERKSHIRE HATHAWAY INC DEL | BRKB | $10.3M | 20,575 | +0.08pp | 28q | HELD | |
| AUTODESK INC | ADSK | $10.0M | 31,535 | -0.09pp | 28q | -3.2%-$333.6K | |
| ARISTA NETWORKS INC | ANET | $9.7M | 66,400 | +1.09pp | 4q | HELD | |
| MARTIN MARIETTA MATLS INC | MLM | $9.6M | 15,263 | +0.32pp | 28q | -3.4%-$337.2K | |
| WATTS WATER TECHNOLOGIES INC | WTS | $8.9M | 32,000 | +0.27pp | 28q | -3.2%-$293.2K | |
| S&P GLOBAL INC | SPGI | $8.8M | 18,061 | -0.57pp | 15q | -5.5%-$514.0K | |
| LINDE PLC | LIN | $8.4M | 17,645 | -0.01pp | 11q | HELD | |
| LENNOX INTL INC | LII | $8.3M | 15,715 | -0.28pp | 28q | +1.4%+$111.2K | |
| ROPER TECHNOLOGIES INC | ROP | $8.0M | 16,021 | -0.59pp | 28q | -2.7%-$223.9K | |
| STERIS PLC | STE | $7.0M | 28,330 | +0.05pp | 23q | +0.5%+$37.1K | |
| CORNING INC | GLW | $6.9M | 84,724 | +0.96pp | 28q | HELD | |
| SHERWIN WILLIAMS CO | SHW | $6.4M | 18,490 | -0.02pp | 28q | HELD | |
| THERMO FISHER SCIENTIFIC INC | TMO | $6.3M | 13,012 | +0.63pp | 28q | +13.4%+$746.9K | |
| ECOLAB INC | ECL | $5.9M | 21,660 | flat | 28q | HELD | |
| EMERSON ELEC CO | EMR | $5.8M | 43,896 | -0.08pp | 28q | HELD | |
| WABTEC | WAB | $5.7M | 28,335 | -0.22pp | 8q | -3.4%-$200.5K | |
| GE VERNOVA INC | GEV | $5.5M | 8,956 | +0.22pp | 6q | -2.9%-$162.9K | |
| EDWARDS LIFESCIENCES CORP | EW | $5.5M | 70,400 | -0.05pp | 28q | HELD | |
| PAYCHEX INC | PAYX | $5.4M | 42,853 | -0.35pp | 28q | HELD | |
| XYLEM INC | XYL | $5.1M | 34,545 | +0.21pp | 28q | -0.6%-$33.2K | |
| DANAHER CORP DEL | DHR | $5.0M | 25,388 | -0.02pp | 28q | HELD | |
| TRIMBLE INC | TRMB | $4.9M | 59,440 | +0.10pp | 12q | HELD | |
| LABCORP HOLDINGS INC | LH | $4.8M | 16,705 | -0.01pp | 3q | -7.5%-$387.5K | |
| BIO-TECHNE CORP | TECH | $4.3M | 78,195 | +0.10pp | 28q | HELD | |
| ALPHABET INC | GOOGL | $4.2M | 17,350 | +0.58pp | 3q | +13.0%+$486.2K | |
| NORDSON CORP | NDSN | $4.2M | 18,315 | -0.12pp | 11q | -10.6%-$491.1K | |
| GARTNER INC | IT | $4.1M | 15,602 | -0.91pp | 28q | HELD | |
| BECTON DICKINSON & CO | BDX | $4.0M | 21,139 | -0.12pp | 28q | -13.3%-$608.1K | |
| MCCORMICK & CO INC | MKC | $4.0M | 59,050 | -0.25pp | 28q | -1.2%-$46.8K | |
| SYNOPSYS INC | SNPS | $3.7M | 7,498 | +1.20pp | 6q | +499.8%+$3.1M | |
| FISERV INC | FISV | $3.7M | 28,625 | -0.68pp | 28q | -7.7%-$309.4K | |
| ENTEGRIS INC | ENTG | $3.7M | 39,830 | +0.38pp | 5q | +20.0%+$614.9K | |
| REVVITY INC | RVTY | $3.4M | 39,283 | -0.17pp | 28q | HELD | |
| TERADYNE INC | TER | $2.8M | 20,450 | +0.37pp | 7q | -0.7%-$20.6K | |
| PALO ALTO NETWORKS INC | PANW | $2.7M | 13,500 | +0.19pp | 21q | +23.6%+$524.3K | |
| VERALTO CORP | VLTO | $2.2M | 20,824 | -0.26pp | 8q | -26.0%-$778.3K | |
| PTC INC | PTC | $1.9M | 9,230 | +0.12pp | 28q | +2.8%+$50.8K | |
| EPAM SYS INC | EPAM | $1.8M | 12,140 | -0.18pp | 28q | -5.2%-$99.5K | |
| APPLE INC | AAPL | $1.8M | 6,980 | +0.13pp | 28q | HELD | |
| AXOGEN INC | AXGN | $1.7M | 94,526 | +0.27pp | 8q | +2.7%+$44.6K | |
| SMITH A O CORP | AOS | $1.6M | 22,300 | -0.05pp | 3q | -16.2%-$315.7K | |
| BROOKFIELD INFRASTRUCTURE PA | BIP | $1.6M | 48,930 | -0.02pp | 28q | HELD | |
| FORTINET INC | FTNT | $1.3M | 15,650 | -0.15pp | 8q | -1.3%-$16.8K | |
| INTUITIVE SURGICAL INC | ISRG | $1.1M | 2,500 | -0.10pp | 28q | HELD | |
| ABBVIE INC | ABBV | $856.7K | 3,700 | +0.06pp | 28q | HELD | |
| 3M CO | MMM | $650.0K | 4,189 | flat | 28q | HELD | |
| RTX CORPORATION | RTX | $597.9K | 3,573 | +0.03pp | 22q | HELD | |
| ILLINOIS TOOL WKS INC | ITW | $508.5K | 1,950 | +0.01pp | 28q | HELD | |
| ABBOTT LABORATORIES | ABT | $442.0K | 3,300 | -0.01pp | 28q | HELD | |
| FORTIVE CORP | FTV | $411.7K | 8,404 | -0.01pp | 28q | HELD | |
| WOODWARD INC | WWD | $379.1K | 1,500 | flat | 8q | HELD | |
| ONEOK INC NEW | OKE | $332.0K | 4,550 | -0.02pp | 20q | HELD | |
| JOHNSON & JOHNSON | JNJ | $309.7K | 1,670 | +0.02pp | 28q | HELD | |
| RALLIANT CORP | RAL | $306.8K | 7,016 | - | new | NEW | |
| CATERPILLAR INC | CAT | $286.3K | 600 | +0.02pp | 2q | HELD | |
| MIDDLEBY CORP | MIDD | $277.2K | 2,085 | -0.82pp | 12q | -87.1%-$1.9M | |
| MCDONALDS CORP | MCD | $273.5K | 900 | flat | 28q | HELD | |
| CANADIAN NATL RY CO | CNI | $273.5K | 2,900 | -0.01pp | 28q | HELD | |
| BWX TECHNOLOGIES INC | BWXT | $263.3K | 1,428 | +0.02pp | 2q | HELD | |
| AIR PRODUCTS AND CHEMICALS I | APD | $259.1K | 950 | -0.01pp | 28q | HELD | |
| CDW CORP | CDW | $258.0K | 1,620 | +0.01pp | 2q | +22.3%+$47.0K | |
| AMGEN INC | AMGN | $254.0K | 900 | flat | 28q | HELD | |
| CANADIAN PACIFIC KANSAS CITY | CP | $227.9K | 3,060 | -0.01pp | 8q | HELD | |
| SEMPRA | SRE | $224.9K | 2,500 | - | new | NEW | |
| BROOKFIELD INFRASTRUCTURE CO | BIPC | $213.5K | 5,191 | flat | 2q | HELD | |
| GE AEROSPACE | GE | $212.9K | 708 | - | new | NEW | |
| CONSTELLATION ENERGY CORP | CEG | $209.3K | 636 | flat | 2q | HELD | |
| SHELL PLC | SHEL | $201.0K | 2,810 | - | new | NEW | |
| DUKE ENERGY CORP NEW | DUK | $200.6K | 1,621 | - | new | NEW |
By sector
Industry comes from the SIC code on each company's own SEC filings, which is self-reported and sometimes out of date. Derivative exposure is counted with the shares. Securities the SEC assigns no industry - funds, trusts, foreign issues - are shown as not classified rather than dropped.
| Sector | Value | Share |
|---|---|---|
| Instruments & Controls | $29.9M | 11.8% |
| Industrials | $27.8M | 11.0% |
| Semiconductors & Electronics | $25.3M | 10.0% |
| Business Services | $22.0M | 8.7% |
| Software & IT Services | $21.6M | 8.5% |
| Medical Devices | $19.9M | 7.8% |
| Chemicals | $18.3M | 7.2% |
| Autos & Aerospace | $17.7M | 7.0% |
| Mining & Metals | $16.6M | 6.5% |
| Computer Hardware | $15.5M | 6.1% |
| Insurance | $10.3M | 4.1% |
| Biotech & Pharma | $9.7M | 3.8% |
| Other sectors | $19.2M | 7.6% |
Quarter by quarter
| Quarter | Value | Positions | New | Added | Trimmed | Exited | Top 10 | Days to file |
|---|---|---|---|---|---|---|---|---|
| Q3 2025 | $253.9M | 71 | 5 | 10 | 20 | 2 | 38.3% | 45 |
| Q2 2025 | $250.1M | 68 | 6 | 13 | 15 | 4 | 37.9% | 45 |
| Q1 2025 | $237.3M | 66 | 4 | 7 | 30 | 6 | 36.7% | 44 |
| Q4 2024 | $254.5M | 68 | 2 | 11 | 26 | 4 | 35.7% | 45 |
| Q3 2024 | $268.6M | 70 | 6 | 12 | 19 | 1 | 36.1% | 45 |
| Q2 2024 | $250.4M | 65 | 2 | 10 | 26 | 3 | 35.5% | 45 |
| Q1 2024 | $261.7M | 66 | 3 | 17 | 24 | 2 | 35.5% | 44 |
| Q4 2023 | $233.4M | 65 | 11 | 17 | 27 | 3 | 37.9% | 45 |
| Q3 2023 | $204.0M | 57 | 2 | 6 | 24 | 2 | 40.4% | 45 |
| Q2 2023 | $225.1M | 57 | 1 | 15 | 18 | 1 | 39.4% | 45 |
| Q1 2023 | $209.2M | 57 | 3 | 13 | 23 | 4 | 39.2% | 45 |
| Q4 2022 | $197.9M | 58 | 4 | 7 | 30 | 5 | 40.8% | 45 |
| Q3 2022 | $185.6M | 59 | 3 | 9 | 17 | 4 | 42.4% | 45 |
| Q2 2022 | $198.8M | 60 | 2 | 3 | 36 | 6 | 41.0% | 46 |
| Q1 2022 | $270.6M | 64 | 3 | 17 | 23 | 1 | 38.0% | 46 |
| Q4 2021 | $309.6M | 62 | 3 | 7 | 43 | 5 | 38.0% | 45 |
| Q3 2021 | $291.6M | 64 | 0 | 30 | 11 | 0 | 38.0% | 46 |
| Q2 2021 | $283.5M | 64 | 3 | 12 | 20 | 3 | 37.5% | 47 |
| Q1 2021 | $261.7M | 64 | 4 | 7 | 23 | 0 | 36.9% | 47 |
| Q4 2020 | $251.6M | 60 | 1 | 15 | 14 | 2 | 37.6% | 47 |
| Q3 2020 | $218.8M | 61 | 5 | 8 | 17 | 1 | 37.8% | 44 |
| Q2 2020 | $202.1M | 57 | 2 | 9 | 24 | 4 | 37.6% | 45 |
| Q1 2020 | $174.4M | 59 | 9 | 12 | 24 | 9 | 36.7% | 45 |
| Q4 2019 | $225.1M | 59 | 2 | 8 | 30 | 1 | 37.4% | 45 |
| Q3 2019 | $209.9M | 58 | 0 | 15 | 17 | 2 | 38.3% | 45 |
| Q2 2019 | $219.0M | 60 | 0 | 7 | 22 | 1 | 36.2% | 45 |
| Q1 2019 | $203.3M | 61 | 2 | 10 | 7 | 0 | 35.9% | 44 |
| Q4 2018 | $160.6M | 59 | 0 | 0 | 0 | 0 | 37.0% | 45 |
Rows marked UNVERIFIED ID, PLACEHOLDER ID, TICKER AS ID or NON-CUSIP ID carry an identifier that is not a valid CUSIP. They are shown because the filer reported that money, but treat the security named with caution - hover the chip for what is wrong with it, and see the methodology.
Held counts consecutive filings in which this manager reported the position, and can reach further back than the quarters listed above: the tabs begin at Q4 2018 because earlier coverage is too sparse to describe a market, but tenure is counted over every filing we hold, some reaching to 2007. A position sold and later rebought starts again from one.
Weight change is the shift in this position's share of the whole book, in percentage points. It is the more useful column: when money flows into or out of a broad fund, almost every holding is bought or sold at once, so added and trimmed largely track flows. A weight that rose while the book shrank is a decision. Both compare with the previous quarter this filer reported, not the previous calendar quarter.