STONE RUN CAPITAL, LLC — 13F Holdings & Portfolio
CIK 1512746 · latest 13F-HR filed 2025-11-14
STONE RUN CAPITAL, LLC manages $253.9M in 13F-reported U.S. long-equity assets across 71 reported positions as of its 2025-09-30 13F-HR filing. Its largest disclosed positions are APH (4.65%), HEI (4.51%), BRK.B (4.07%). Quarter over quarter (versus its 2025-06-30 filing) the fund opened 5 new positions, exited 2, added to 25, and trimmed 21.
AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.
$253.9M
Long-equity book
71
Distinct positions
2025-09-30
Filed 2025-11-14
+5 / −2 / ↑25 / ↓21
vs 2025-06-30
| Name | Title / Status | Ownership | Type |
|---|
Top Adds (vs prior quarter)
- SYNOPSYS INC$3.1M +477.3%
- ARISTA NETWORKS INC$2.9M +42.0%
- CORNING INC$2.5M +55.9%
- AMPHENOL CORP NEW$2.1M +22.1%
- THERMO FISHER SCIENTIFIC INC$1.7M +35.7%
Top Trims
- GARTNER INC-$2.2M -35.2%
- MIDDLEBY CORP-$2.0M -88.1%
- FISERV INC-$1.7M -31.0%
- ROPER TECHNOLOGIES INC-$1.3M -14.4%
- S&P GLOBAL INC-$1.3M -12.8%
New Positions
- RALLIANT CORP$306.8K
- SEMPRA$224.9K
- GE AEROSPACE$212.9K
- SHELL PLC$201.0K
- DUKE ENERGY CORP NEW$200.6K
Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).
| # | Issuer | Symbol | CUSIP | Value | Weight | Shares | Type |
|---|---|---|---|---|---|---|---|
| 1 | AMPHENOL CORP NEW | APH | 032095101 | $11.8M | 4.65% | 95,320 | SH |
| 2 | HEICO CORP NEW | HEI | 422806109 | $11.4M | 4.51% | 35,466 | SH |
| 3 | BERKSHIRE HATHAWAY INC DEL | BRK.B | 084670702 | $10.3M | 4.07% | 20,575 | SH |
| 4 | AUTODESK INC | ADSK | 052769106 | $10.0M | 3.95% | 31,535 | SH |
| 5 | ARISTA NETWORKS INC | ANET | 040413205 | $9.7M | 3.81% | 66,400 | SH |
| 6 | MARTIN MARIETTA MATLS INC | MLM | 573284106 | $9.6M | 3.79% | 15,263 | SH |
| 7 | WATTS WATER TECHNOLOGIES INC | WTS | 942749102 | $8.9M | 3.52% | 32,000 | SH |
| 8 | S&P GLOBAL INC | SPGI | 78409V104 | $8.8M | 3.46% | 18,061 | SH |
| 9 | LINDE PLC | LIN | G54950103 | $8.4M | 3.30% | 17,645 | SH |
| 10 | LENNOX INTL INC | LII | 526107107 | $8.3M | 3.28% | 15,715 | SH |
| 11 | ROPER TECHNOLOGIES INC | ROP | 776696106 | $8.0M | 3.15% | 16,021 | SH |
| 12 | STERIS PLC | STE | G8473T100 | $7.0M | 2.76% | 28,330 | SH |
| 13 | CORNING INC | GLW | 219350105 | $6.9M | 2.74% | 84,724 | SH |
| 14 | SHERWIN WILLIAMS CO | SHW | 824348106 | $6.4M | 2.52% | 18,490 | SH |
| 15 | THERMO FISHER SCIENTIFIC INC | TMO | 883556102 | $6.3M | 2.49% | 13,012 | SH |
| 16 | ECOLAB INC | ECL | 278865100 | $5.9M | 2.34% | 21,660 | SH |
| 17 | EMERSON ELEC CO | EMR | 291011104 | $5.8M | 2.27% | 43,896 | SH |
| 18 | WABTEC | WAB | 929740108 | $5.7M | 2.24% | 28,335 | SH |
| 19 | GE VERNOVA INC | GEV | 36828A101 | $5.5M | 2.17% | 8,956 | SH |
| 20 | EDWARDS LIFESCIENCES CORP | EW | 28176E108 | $5.5M | 2.16% | 70,400 | SH |
| 21 | PAYCHEX INC | PAYX | 704326107 | $5.4M | 2.14% | 42,853 | SH |
| 22 | XYLEM INC | XYL | 98419M100 | $5.1M | 2.01% | 34,545 | SH |
| 23 | DANAHER CORPORATION | DHR | 235851102 | $5.0M | 1.98% | 25,388 | SH |
| 24 | TRIMBLE INC | TRMB | 896239100 | $4.9M | 1.91% | 59,440 | SH |
| 25 | LABCORP HOLDINGS INC | LH | 504922105 | $4.8M | 1.89% | 16,705 | SH |
| 26 | BIO-TECHNE CORP | TECH | 09073M104 | $4.3M | 1.71% | 78,195 | SH |
| 27 | ALPHABET INC | GOOGL | 02079K305 | $4.2M | 1.66% | 17,350 | SH |
| 28 | NORDSON CORP | NDSN | 655663102 | $4.2M | 1.64% | 18,315 | SH |
| 29 | GARTNER INC | IT | 366651107 | $4.1M | 1.62% | 15,602 | SH |
| 30 | BECTON DICKINSON & CO | BDX | 075887109 | $4.0M | 1.56% | 21,139 | SH |
| 31 | MCCORMICK & CO INC | MKC | 579780206 | $4.0M | 1.56% | 59,050 | SH |
| 32 | SYNOPSYS INC | SNPS | 871607107 | $3.7M | 1.46% | 7,498 | SH |
| 33 | FISERV INC | FISV | 337738108 | $3.7M | 1.45% | 28,625 | SH |
| 34 | ENTEGRIS INC | ENTG | 29362U104 | $3.7M | 1.45% | 39,830 | SH |
| 35 | REVVITY INC | RVTY | 714046109 | $3.4M | 1.36% | 39,283 | SH |
| 36 | TERADYNE INC | TER | 880770102 | $2.8M | 1.11% | 20,450 | SH |
| 37 | PALO ALTO NETWORKS INC | PANW | 697435105 | $2.7M | 1.08% | 13,500 | SH |
| 38 | VERALTO CORP | VLTO | 92338C103 | $2.2M | 0.87% | 20,824 | SH |
| 39 | PTC INC | PTC | 69370C100 | $1.9M | 0.74% | 9,230 | SH |
| 40 | EPAM SYS INC | EPAM | 29414B104 | $1.8M | 0.72% | 12,140 | SH |
| 41 | APPLE INC | AAPL | 037833100 | $1.8M | 0.70% | 6,980 | SH |
| 42 | AXOGEN INC | AXGN | 05463X106 | $1.7M | 0.66% | 94,526 | SH |
| 43 | SMITH A O CORP | AOS | 831865209 | $1.6M | 0.64% | 22,300 | SH |
| 44 | BROOKFIELD INFRAST PARTNERS | BIP | G16252101 | $1.6M | 0.63% | 48,930 | SH |
| 45 | FORTINET INC | FTNT | 34959E109 | $1.3M | 0.52% | 15,650 | SH |
| 46 | INTUITIVE SURGICAL INC | ISRG | 46120E602 | $1.1M | 0.44% | 2,500 | SH |
| 47 | ABBVIE INC | ABBV | 00287Y109 | $856.7K | 0.34% | 3,700 | SH |
| 48 | 3M CO | MMM | 88579Y101 | $650.0K | 0.26% | 4,189 | SH |
| 49 | RTX CORPORATION | RTX | 75513E101 | $597.9K | 0.24% | 3,573 | SH |
| 50 | ILLINOIS TOOL WKS INC | ITW | 452308109 | $508.5K | 0.20% | 1,950 | SH |
| Period | Filed | AUM | Holdings | Accession |
|---|---|---|---|---|
| 2025-09-30 | 2025-11-14 | $253.9M | 71 | 0001420506-25-003349 |
| 2025-06-30 | 2025-08-14 | $250.1M | 68 | 0001420506-25-002087 |