| WYMAN-GORDON FORGINGS LP | Berkshire Hathaway | 56,696.56 |
| SALZGITTER MANNESMANN STAINLESS TUBES USA | Salzgitter | 8,664.38 |
| HUNTSMAN PETROCHEMICAL LLC | Huntsman | 2,362.62 |
| NOV RIG SYSTEMS WEST LITTLE YORK | NOV Inc. | 1,680.60 |
| NOURYON SURFACE CHEMISTRY LLC | Carlyle Group | 649.55 |
| GOODMAN MANUFACTURING CO LP | Daikin | 263.57 |
| AMACS PROCESS TOWER INTERNALS | AMACS PROCESS TOWER INTERNALS | 176.04 |
| PRECISION SPRAY & COATINGS LLC | PRECISION SPRAY & COATINGS LLC | 157.50 |
| FLOW AMERICA | SPX FLOW | 124.85 |
| BAKER HUGHES CO - JFK CAMPUS | Baker Hughes | 123.04 |
| BAKER HUGHES - NHR FACILITY | Baker Hughes | 84.81 |
| UNITED GALVANIZING INC | UNITED GALVANIZING INC | 82.71 |
| ELLWOOD TEXAS FORGE | Ellwood Group | 77.83 |
| H & M PLATING CO INC | H & M PLATING CO | 72.82 |
| MIRROR INDUSTRIES | MIRROR ACQUISITIONS LLC | 63.66 |
| HOUSTON REFINING LP | LyondellBasell | 41.95 |
| SCHLUMBERGER TECHNOLOGY CORP RESLINK | Schlumberger | 40.70 |
| BAKER HUGHES - HUGHES CHRISTENSEN | Baker Hughes | 31.81 |
| TARGA DOWNSTREAM LLC - GALENA PARK MARINE TERMINAL | Targa Resources | 27.47 |
| THE GOODYEAR TIRE & RUBBER CO | Goodyear Tire & Rubber | 25.00 |
| TPC GROUP LLC | TPC Group | 24.51 |
| CB&I LLC | McDermott International | 20.08 |
| DANIEL MEASUREMENT & CONTROL INC | Emerson Electric | 19.98 |
| VALERO REFINING - TEXAS LP HOUSTON REFINERY | Valero Energy | 15.26 |
| SOUTHWESTERN PLATING CO INC | SOUTHWESTERN PLATING CO | 12.14 |
| KOCH HEAT TRANSFER CO LP | Koch Industries | 11.15 |
| SCHUMACHER CO | SCHUMACHER CO | 11.12 |
| DIXIE ELECTRO PLATING CO | DIXIE ELECTRO PLATING CO | 10.89 |
| REGIS TECHNOLOGIES INC | REGIS TECHNOLOGIES INC | 10.80 |
| HALLIBURTON DRILL BITS & SERVICES | Halliburton | 7.67 |
| TEXAS HONING INC - NORTH FACILITY | Berkshire Hathaway | 7.55 |
| AMERICAN ACRYL LP | AMERICAN ACRYL LLC | 7.41 |
| FLINT HILLS RESOURCES HOUSTON CHEMICAL LLC | Koch Industries | 6.95 |
| ALLOY & STAINLESS FASTENERS | ALLOY & STAINLESS FASTENERS | 6.48 |
| ECO SERVICES OPERATIONS CORP | PQ Group Holdings | 5.82 |
| APPLETON GROUP LLC | Emerson Electric | 5.62 |
| O'NEAL MANUFACTURING SERVICES | O'Neal Industries | 5.51 |
| VALERO ENERGY PARTNERS LP | Valero Energy | 5.49 |
| EMERSON AUTOMATION SOLUTIONS FINAL CONTROLS | Emerson Electric | 4.07 |
| TRECORA CHEMICAL INC | TRECORA Resources | 4.02 |
| NALCO CO LLC | Ecolab | 3.10 |
| INTERNATIONAL PAINT LLC | Akzo Nobel | 2.85 |
| OIL STATES INDUSTRIES INC - MMC | Oil States International | 2.78 |
| WELL STIMULATION | AFGLOBAL CORP | 1.82 |
| QUALITY ELECTRIC STEEL CASTINGS LP | QUALITY ELECTRIC STEEL CASTINGS LP | 1.82 |
| ITW POLYMERS SEALANTS NA | Illinois Tool Works | 1.76 |
| POWEROHM RESISTORS INC A DIV OF HUBBELL INDUSTRIAL CONTROLS | Hubbell | 1.39 |
| KINDER MORGAN CRUDE & CONDENSATE LLC | Kinder Morgan | 1.32 |
| ALLIED AVIATION FUELING CO OF HOUSTON INC | ALLIED AVIATION HOLDING CO | 1.23 |
| TEXMARK CHEMICALS INC | CHEMICAL EXCHANGE INDUSTRIES INC | 1.22 |
| PILOT INDUSTRIES OF TEXAS INC | PILOT CHEMICAL CORP | 1.13 |
| LAMBERTI USA CONROE PLANT 8910 | Lamberti | 1.02 |
| MAUSER CORP | Stone Canyon Industries | 0.82 |
| HUNTSMAN INTERNATIONAL LLC | Huntsman | 0.72 |
| POLYNT COMPOSITES USA INC - HOUSTON | Polynt-Reichhold | 0.62 |
| KOCIDE LLC | Mitsui | 0.59 |
| OFFSHORE OPERATIONS HOUSTON | United States Steel | 0.58 |
| VALERO HOUSTON ASPHALT TERMINAL | Valero Energy | 0.50 |
| MOTIVA ENTERPRISES LLC PASADENA TERMINAL | Saudi Arabian Oil Company (Saudi Aramco) | 0.46 |
| CROWN BEVERAGE PACKAGING | Crown Holdings | 0.45 |
| SOLVAY SPECIALTY POLYMERS USA LLC | Solvay | 0.33 |
| GALENA PARK TERMINAL CHEVRON USA INC | Chevron | 0.32 |
| SMI MANUFACTURING-HARDY ROAD FACILITY | AFGLOBAL CORP | 0.29 |
| CROWN BEVERAGE PACKAGING | Crown Holdings | 0.26 |
| BALL METAL BEVERAGE CONTAINER CORP | Ball Corp. | 0.26 |
| US ZINC - METAL | US ZINC CORP | 0.25 |
| BASF CORP - HOUSTON EBN SITE | BASF | 0.24 |
| EXXON MOBIL CORP NORTH HOUSTON TERMINAL | Exxon Mobil | 0.23 |
| US ZINC- DUST | US ZINC CORP | 0.22 |
| EXXON MOBIL CORP SOUTH HOUSTON TERMINAL | Exxon Mobil | 0.19 |
| ICP BUILDING SOLUTIONS GROUP TOMBALL | ICP ADHESIVES & SEALANTS INC | 0.17 |
| OWENS CORNING ROOFING & ASPHALT LLS HOUSTON | Owens Corning | 0.13 |
| ELECTRO-COATINGS OF TEXAS INC | ACME Holdings | 0.12 |
| QUALITY PRODUCT FINISHING INC | QUALITY PRODUCT FINISHING INC | 0.10 |
| STAUFFER PIPE SERVICES | STAUFFER PIPE SERVICES | 0.09 |
| TENARIS COILED TUBES LLC | Techint | 0.09 |
| LYONDELL CHEMICAL CO | LyondellBasell | 0.08 |
| S + S INDUSTRIES | S + S INDUSTRIES | 0.07 |
| HOUSTON RETAIL SUPPORT CENTER | H-E-B Grocery | 0.06 |
| DEE FOUNDRIES INC | DEE FOUNDRIES INC | 0.05 |
| REFINERY SPECIALTIES HEMPSTEAD FACILITY | RSI HOLDINGS LLC | 0.04 |
| MONUMENT CHEMICAL BAYTOWN LLC | Monument Chemical | 0.03 |
| QUIETFLEX MANUFACTURING CO LP | Daikin | 0.03 |
| TOSHIBA INTERNATIONAL CORP | Toshiba | 0.02 |
| 443 - RICHMOND OILSEEDS | Archer Daniels Midland | 0.02 |
| EVONIK CORP - PASADENA PMD PLANT | Evonik Industries | 0.02 |
| MERCHANT METALS LLC | Sterling Group | 0.02 |
| USGYPSUM CO GALENA PARK | Knauf | 0.02 |
| LARK HEAT TREATING INC | LARK HEAT TREATING INC | 0.02 |
| NELCO | NELCO | 0.02 |
| SEKISUI SPECIALTY CHEMICALS AMERICA LLC - PASADENA PLANT | Sekisui Chemical | 0.01 |
| FORTERRA PIPE & PRECAST - JERSEY VILLAGE | Lone Star Funds | 0.01 |
| SIGMA LIFE SCIENCES | Merck KGaA (EMD) | 0.01 |
| SWS HOLDINGS-PASADENA LP | SOUTHWEST SHIPYARD LP | 0.01 |
| HENRY CO | HENRY CO | 0.01 |
| SWS HOLDINGS-BRADY ISLAND LP | SOUTHWEST SHIPYARD LP | 0.01 |
| ANHEUSER-BUSCH LLC | Anheuser-Busch InBev | 0.01 |
| K-T GALVANIZING CO | K-T GALVANIZING CO | 0.01 |
| SCAN PAC MANUFACTURING INC | SCAN-PAC MANUFACTURING INC | 0.01 |
| DRIL-QUIP INC | Dril-Quip | 0.01 |
| AZZ GALVANIZING SERVICES - HOUSTON WEST | AZZ Inc. | 0.01 |
| ROYAL BATHS MANUFACTURING CO | ROYAL BATHS MANUFACTURING CO LTD | 0.01 |
| GOODYEAR TIRE & RUBBER CO | Goodyear Tire & Rubber | 0.01 |
| SOUTHWEST GALVANIZING INC | SOUTHWEST GALVANIZING INC | 0.01 |
| MADDEN GALVANIZING LLC | MADDEN GALVANIZING LLC | 0.01 |
| EASTEX FOREST PRODUCTS | EASTEX FOREST PRODUCTS | 0.01 |
| HB FULLER CONSTRUCTION PRODUCTS INC | H.B. Fuller | 0.01 |
| NOV RIG SYSTEMS FM 529 | NOV Inc. | 0.01 |
| CUSTOM CRETE - BRITTMORE | U.S. Concrete Inc. | 0.01 |
| ALEGACY EQUIPMENT LLC | ALEGACY GROUP | 0.00 |
| NOV MONOFLO BREEN & BREEN ISE | NOV Inc. | 0.00 |
| KING FABRICATION LLC | KING FABRICATION LLC | 0.00 |
| NATURAL GAS SOLUTIONS NA | First Reserve | 0.00 |
| KIK (HOUSTON) INC | KIK Custom Products | 0.00 |
| SOUTHERN FOODS GROUP LLC DBA OAK FARMS DAIRY | Dairy Farmers of America (DFA) | 0.00 |
| SECE SCHLUMBERGER TECHNOLOGY | Schlumberger | 0.00 |
| TOYOTA MOTOR MANUFACTURING TEX AS INC | Toyota | 0.00 |
| INTERCOASTAL PAINT CO INC | INTERCOASTAL PAINT CO INC | 0.00 |
| HOBAS PIPE USA LP | HOBAS PIPE USA LP | 0.00 |
| METALPLATE GALVANIZING LP | METALPLATE GALVANIZING LP | 0.00 |
| METALPLATE GALVANIZING LP | METALPLATE GALVANIZING LP | 0.00 |
| JERSEY VILLAGE PLANT | Argos | 0.00 |
| AZZ GALVANIZING SERVICES-HOUSTON | AZZ Inc. | 0.00 |
| ROYAL BATHS MANUFACTURING CO | ROYAL BATHS MANUFACTURING CO LTD | 0.00 |
| NOV COATING HOUSTON | NOV Inc. | 0.00 |
| ENDURO COMPOSITES INC-HOUSTON CENTRAL GREEN FACILITY | ENDURO SYSTEMS INC | 0.00 |
| EXTERRAN ENERGY SOLUTIONS LP - BRITTMOORE FACILITY | Exterran Corp. | 0.00 |
| BLENTECH CORP | BLENTECH CORP | 0.00 |
| CRAIG BAKER MARBLE CO INC | CRAIG BAKER MARBLE CO INC | 0.00 |
| EXTERRAN ENERGY SOLUTIONS LP - NHR FACILITY | Exterran Corp. | 0.00 |
| CLOCK SPRING | CSC OPERATING CO LLC | 0.00 |
| AKER BIOMARINE | AKER BIOMARINE | 0.00 |
| THORPE PLANT SERVICES | CAPSTREET GROUP | 0.00 |
| MODERN WELDING CO OF TX INC | MODERN WELDING CO INC | 0.00 |
| AXALTA COATING SYSTEMS USA LLC | Axalta Coating Systems | 0.00 |
| SYNTECH CHEMICALS INC | SYNTECH CHEMICALS INC. | 0.00 |
| RENWICK PLANT | Argos | 0.00 |
| PETROMAX REFINING CO LLC | PETROMAX REFINING CO LLC | 0.00 |
| LATTIMORE MATERIALS CORP - BARKER RM | LafargeHolcim | 0.00 |
| TOMBALL PLANT | Argos | 0.00 |
| PRAXAIR DISTRIBUTION INC (FORMERLY TEXAS WELDERS SUPPLY) | Linde | 0.00 |
| HOLMES RD PLANT | Argos | 0.00 |
| FULTON PLANT | Argos | 0.00 |
| KATY BAGGING FACILITY | CRH PLC | 0.00 |
| W R GRACE & CO - CONN | W.R. Grace | 0.00 |
| ALLCHEM SERVICES INC | ALLCHEM SERVICES INC | 0.00 |
| PRAXAIR SURFACE TECHNOLOGIES INC | Linde | 0.00 |
| CAMPBELL RMC JERSEY VILLAGE | HeidelbergCement | 0.00 |
| CAMPBELL RMC HARWIN | HeidelbergCement | 0.00 |
| UNIVAR USA INC HOUSTON FM 529 | Univar Solutions | 0.00 |
| CINCO PLANT | Argos | 0.00 |
| LATTIMORE MATERIALS CORP - SPRING RM | LafargeHolcim | 0.00 |
| DYNA DRILL TECHNOLOGIES LLC | Schlumberger | 0.00 |
| WORLD ENERGY BIOX BIOFUELS | World Energy | 0.00 |
| BYK USA INC | Altana | 0.00 |
| CLARIANT CORP | Clariant | 0.00 |
| TUF-CRETE PLANT | Argos | 0.00 |
| MYKAWA PLANT | Argos | 0.00 |
| LAMBERTI USA CONROE PLANT 8920 | Lamberti | 0.00 |
| KATY PLANT | Argos | 0.00 |
| GREENSPOINT PLANT | Argos | 0.00 |
| CAMPBELL RMC HOCKLEY | HeidelbergCement | 0.00 |
| STOLLER ENTERPRISES INC | STOLLER ENTERPRISES INC | 0.00 |
| AJ HURT JR INC DBA THE HURT CO | Audax Group | 0.00 |
| SUMMIT REFRIGERANTS | Moira Capital Partners | 0.00 |
| PHILLIPS 66 PONCA CITY SITE | Phillips 66 | 0.00 |
| ENDURANCE COMPOSITES-PEARLAND | ANDRONACO INDUSTRIES | 0.00 |
| CAMPBELL RMC KATY | HeidelbergCement | 0.00 |
| CAMPBELL RMC HARDY STREET | HeidelbergCement | 0.00 |
| SEC ENERGY PRODUCTS & SERVICES LP | Energy Transfer | 0.00 |
| RICHMOND PLANT | Argos | 0.00 |
| ROSENBERG BLOCK PLANT | CRH PLC | 0.00 |
| CAMPBELL RMC PEARLAND | HeidelbergCement | 0.00 |
| BRASKEM AMERICA INC-LAPORTE SITE | Braskem | 0.00 |
| CAMPBELL RMC ROSENBERG | HeidelbergCement | 0.00 |
| CAMPBELL RMC SPRING | HeidelbergCement | 0.00 |
| CAMPBELL RMC CONROE | HeidelbergCement | 0.00 |
| CAMPBELL RMC MAGNOLIA | HeidelbergCement | 0.00 |
| TECHNIPFMC GREMP CAMPUS | TechnipFMC | 0.00 |
| EQUISTAR CHEMICALS LP | LyondellBasell | 0.00 |
| FORTERRA PIPE & PRECAST LLC | Lone Star Funds | 0.00 |
| CAMPBELL RMC HUMBLE | HeidelbergCement | 0.00 |
| EQUISTAR CHEMICALS LP-MATAGORDA FACILITY | LyondellBasell | 0.00 |
| CHEVRON PHILLIPS CHEMICAL CO - PASADENA PLASTICS COMPLEX | Chevron Phillips Chemical | 0.00 |
| LONE STAR HEAT TREATING CORP | LONE STAR HEAT TREATING CORP | 0.00 |
| PFP INDUSTRIES LLC | PFP INDUSTRIES LLC (A GLOBAL ENTERPRISE) | 0.00 |
| HOCKLEY PLANT | Argos | 0.00 |
| FMC ENERGY SYSTEMS | TechnipFMC | 0.00 |
| OXY VINYLS LP LA PORTE VCM PLANT | Occidental Petroleum | 0.00 |
| NALCO CHAMPION FREEPORT | Ecolab | 0.00 |
| BEST BLOCK EAST HOUSTON PLANT | Quikrete | 0.00 |
| THORPE PLANT SERVICES INC | CAPSTREET GROUP | 0.00 |
| GREIF PACKAGING LLC | Greif Inc. | 0.00 |
| SACHEM INC | SACHEM INC | 0.00 |
| FORUM ENERGY TECHNOLOGIES- VALVE SOLUTIONS PBV | Forum Energy Technologies | 0.00 |
| UNIVAR USA INC HOUSTON | Univar Solutions | 0.00 |
| LYONDELLBASELL ACETYLS LLC | LyondellBasell | 0.00 |
| MATHESON TRI-GAS INC-PALM | Mitsubishi Group | 0.00 |
| ALLIED POWER GROUP | AEA Investors | 0.00 |
