| Issuer | % book | Business |
|---|
| $BRK.B · BERKSHIRE HATHAWAY INC DEL | 25.8% | Buffett conglomerate — insurance, railroads, utilities, equities |
| $WM · WASTE MGMT INC DEL | 20.1% | Waste collection, disposal and recycling |
| $CNR · CANADIAN NATL RY CO | 16.8% | Canadian freight railroad |
| $CAT · CATERPILLAR INC | 14.2% | Construction and mining machinery |
| $DE · DEERE & CO | 6.3% | Agricultural and construction machinery (John Deere) |
| $ECL · ECOLAB INC | 4.4% | Water, hygiene and infection-prevention solutions |
| $WMT · WALMART INC | 3.3% | World's largest retailer; stores and e-commerce |
| $FDX · FEDEX CORP | 2.7% | Express shipping and logistics |
| $KOF · COCA-COLA FEMSA SAB DE CV | 1.9% | Largest Coca-Cola bottler (Latin America) |
| $WCN · WASTE CONNECTIONS INC | 1.0% | Solid waste collection and disposal services |