Panoramic Resources Limited, together with its subsidiaries, engages in the exploration, evaluation, development, and mining of mineral deposits. It holds 100% interests in the Savannah nickel project in Western Australia. The company also engages in greenfield exploration activities. The company was founded in 2001 and is based in Perth, Australia.

SSR Mining Inc., together with its subsidiaries, engages in the acquisition, exploration, development, and operation of precious metal resource properties in Turkey and the Americas. The company explores for gold, silver, lead, and zinc deposits. Its projects include the Çöpler Gold mine located in Erzincan, Turkey; the Marigold mine located in Humboldt and Lander Counties, Nevada, the United States; the Seabee Gold Operation located in Saskatchewan, Canada; and the Puna Operations in Jujuy, Argentina. The company was formerly known as Silver Standard Resources Inc. and changed its name to SSR Mining Inc. in August 2017. SSR Mining Inc. was incorporated in 1946 and is based in Vancouver, Canada.

Alumina Limited, through its 40% interest in Alcoa World Alumina and Chemicals, engages in bauxite mining, alumina refining, and aluminum smelting businesses. The company has a network of bauxite mines and alumina refineries in Australia, Guinea, Brazil, and Spain, and Saudi Arabia; and a 55% interest in the Portland aluminium smelter in Victoria, Australia. It is also involved in shipping operations. The company was formerly known as WMC Limited and changed its name to Alumina Limited in December 2002 as part of the demerger of the WMC Group. Alumina Limited was incorporated in 1970 and is headquartered in Southbank, Australia.

Deutsche Rohstoff AG, together with its subsidiaries, engages in the exploration and production of crude oil, and natural gas primarily in North America, Australia, and Europe. It also explores for and develops metal properties, including gold, copper, lithium, tungsten, and tin. The company was founded in 2006 and is based in Mannheim, Germany.

Alamos Gold Inc., together with its subsidiaries, engages in the acquisition, exploration, development, and extraction of gold in North America, Canada, and Mexico. It also explores for silver and precious metals. The company's flagship project is the Young-Davidson mine, which includes contiguous mineral leases and claims totaling 5,587 ha located in Northern Ontario, Canada. The company was formerly known as AuRico Gold Inc. and changed its name to Alamos Gold Inc. in July 2015. The company is headquartered in Toronto, Canada.

The investment seeks to track the performance of an index of extended-duration zero-coupon U.S. Treasury securities. The fund employs an indexing investment approach designed to track the performance of the Bloomberg Barclays U.S. Treasury STRIPS 20-30 Year Equal Par Bond Index. This index includes zero-coupon U.S. Treasury securities (Treasury STRIPS), which are backed by the full faith and credit of the U.S. government, with maturities ranging from 20 to 30 years. The fund invests by sampling the index. At least 80% of it's assets will be invested in U.S. Treasury securities held in the index.

Pretium Resources Inc. acquires, explores for, and develops precious metal resource properties in the Americas. The company primarily explores for gold and silver deposits. It holds 100% interests in the Brucejack project that consists of 4 mining leases and 6 mineral claims covering an area of 3,306 hectares located in northwestern British Columbia. The company was founded in 2010 and is headquartered in Vancouver, Canada.

Osisko Gold Royalties Ltd acquires and manages precious metal and other royalties, streams, and offtake and other interests in Canada and internationally. It also owns options on royalty/stream financings; and exclusive rights to participate in future royalty/stream financings on various projects. The company's primary asset is a 5% net smelter return royalty on the Canadian Malartic mine located in Canada. It is also involved in the exploration, evaluation, and development of mining projects. The company is headquartered in Montreal, Canada.

Capstone Mining Corp. engages in the exploration and production of base metals in the United States, Mexico, Canada, and Chile. The company explores for copper, molybdenum, silver, zinc, lead, iron, and gold deposits. It holds interests in the Pinto Valley, an open pit copper mine located in Arizona, the United States; and the Cozamin, an underground, copper-silver mine located in the state of Zacatecas, Mexico. The company also owns a 70% interest in copper-iron-gold Santo Domingo development project in Region III, Chile. The company was incorporated in 2009 and is headquartered in Vancouver, Canada.

Jupiter Mines Limited engages in the development and operation of mineral resource properties. It primarily explores for manganese deposits. The company's flagship project is the Tshipi Manganese mine located in South Africa. Jupiter Mines Limited was incorporated in 2003 and is based in Perth, Australia.

NovaGold Resources Inc. explores for and develops gold mineral properties in the United States. It primarily owns 50% interest in the Donlin Gold project consisting of 493 mining claims covering an area of 71,420 acres located in the Kuskokwim region of southwestern Alaska. The company was formerly known as NovaCan Mining Resources (1985) Limited and changed its name to NovaGold Resources Inc. in March 1987. NovaGold Resources Inc. was founded in 1984 and is based in Vancouver, Canada.

Eldorado Gold Corporation and its subsidiaries engage in the exploration, discovery, acquisition, financing, development, production, sale, and reclamation of mineral products, primarily in Turkey, Canada, Greece, Brazil, and Romania. The company primarily produces gold, as well as silver, lead, zinc, and iron ore. It holds 100% interest in the Kisladag and Efemcukuru gold mines located in western Turkey; Lamaque gold mines located in Canada; and Olympias, Stratoni, Skouries, Perama Hill, and Sapes gold mines located in Greece, as well as 80.5% interest in the Certej and Bolcana development projects located in Romania; and 100% interest in the Tocantinzinho development project located in Brazil. The company was formerly known as Eldorado Corporation Ltd. and changed its name to Eldorado Gold Corporation in April 1996. Eldorado Gold Corporation was incorporated in 1992 and is headquartered in Vancouver, Canada.

Equinox Gold Corp. engages in the acquisition, exploration, and development of mineral deposits. The company primarily explores for gold and silver deposits. Its properties include the Aurizona gold mine located in Maranhão State; the Fazenda gold mine located in Bahia State; the RDM gold mine located in Minas Gerais State; and the Santa Luz gold mine located in Bahia State, Brazil. The company also hold interests in the Mesquite gold mine and the Castle Mountain property situated in California, the United States; and the Los Filos Gold Mine located in Guerrero State, Mexico. In addition, it holds a 60% interest in the Greenstone project located in Ontario, Canada. The company was formerly known as Trek Mining Inc. and changed its name to Equinox Gold Corp. in December 2017. Equinox Gold Corp. was incorporated in 2007 and is headquartered in Vancouver, Canada.

IRC Limited, an investment holding company, develops, produces, and sells industrial commodities products in the Russia, People's Republic of China, and internationally. The company operates through four segments: Mines in Production, Mines in Development, Engineering, and Other. The Mines in Production segment comprises iron ore projects in production phase, which include the Kimkan and Sutara project located in the Obluchenskoye district of the Jewish Autonomous Region in the Russian Far East. The Mines in Development segment consists of iron ore projects in the exploration and development phase comprising the Garinskoye project that focuses on iron ore deposits in the Amur region; and the Bolshoi Seym project that explores for ilmenomagnetite, magnetite, and ilmenite located in the located in the Tynda district of Amur region in the Russian Far East region. The Engineering segment provides technical mining research and consultancy services. The Other segment primarily includes the Kuranakh project that produces titanomagnetite and ilmenite concentrate products located in the Tynda district of Amur region in the Russian Far East region. IRC Limited is also involved in the provision of general trading, financing, engineering, and procurement services; and development of titanium sponge. The company was incorporated in 2010 and is headquartered in Central, Hong Kong.

IAMGOLD Corporation explores for, develops, and operates gold mining properties in North and South America, and West Africa. The company owns interests in the Rosebel mine located in Suriname, South America; the Essakane mine situated in Burkina Faso, West Africa; the Westwood mine located in Quebec, Canada. Its exploration and development projects include the Boto gold project in Senegal; the Diakha-Siribaya gold project in Mali; the Pitangui project in Brazil; the Côté gold project in Ontario; and the Karita gold project in Guinea, as well as holds interest in the Loma Larga, a gold, silver, and copper project in southern Ecuador. IAMGOLD Corporation was incorporated in 1990 and is headquartered in Toronto, Canada.

Osisko Mining Inc., a mineral exploration company, engages in the acquisition, exploration, and development of gold resource properties in Canada. Its flagship project is the Windfall Lake property that consists of 285 mining claims covering an area of approximately 12,467 hectares located in the Abitibi greenstone belt, Urban Township, Eeyou Istchee James Bay, Quebec. The company was formerly known as Oban Mining Corporation and changed its name to Osisko Mining Inc. in June 2016. Osisko Mining Inc. was incorporated in 2010 and is headquartered in Toronto, Canada.

MAG Silver Corp. engages in the exploration and development of silver mining properties. It also explores for gold, lead, and zinc deposits. It primarily holds 44% interest in the Juanicipio project located in the Fresnillo District, Zacatecas State, Mexico. The company was incorporated in 2003 and is headquartered in Vancouver, Canada.

Wesdome Gold Mines Ltd. engages in the exploration, extraction, processing, and reclamation of gold in Canada. It principally produces gold in the form of doré bars; and silver as a by-product. The company's principal assets include the Eagle River Mine, which consists of 3 contiguous mining leases and 442 contiguous active mining claims covering an area of 7,958 hectares; the Mishi Mine that consists of 19 patented mining claims, 5 mining leases, and 5 staked claims covering an area of 3,055 hectares; and the Eagle River Mill located near Wawa, Ontario, as well as the Kiena Mining and Milling Complex and exploration properties located in Val D'Or, Quebec. Wesdome Gold Mines Ltd. was founded in 1976 and is headquartered in Toronto, Canada.

Southern Copper Corporation engages in mining, exploring, smelting, and refining copper and other minerals in Peru, Mexico, Argentina, Ecuador, and Chile. The company is involved in the mining, milling, and flotation of copper ore to produce copper and molybdenum concentrates; smelting of copper concentrates to produce blister and anode copper; refining of anode copper to produce copper cathodes; production of molybdenum concentrate and sulfuric acid; production of refined silver, gold, and other materials; and mining and processing of zinc and lead. It operates the Toquepala and Cuajone open-pit mines, and a smelter and refinery in Peru; and La Caridad, an open-pit copper mine, as well as a copper ore concentrator, a SX-EW plant, a smelter, refinery, and a rod plant in Mexico. The company also operates Buenavista, an open-pit copper mine, as well as two copper concentrators and two operating SX-EW plants in Mexico. In addition, it operates five underground mines that produce zinc, lead, copper, silver, and gold; a coal mine that produces coal and coke; and a zinc refinery. The company has interests in 59,252 hectares of exploration concessions in Peru; 503,104 hectares of exploration concessions in Mexico; 229,312 hectares of exploration concessions in Argentina; 27,353 hectares of exploration concessions in Chile; and 7,299 hectares of exploration concessions in Ecuador. Southern Copper Corporation was incorporated in 1952 and is based in Phoenix, Arizona. Southern Copper Corporation is a subsidiary of Americas Mining Corporation.

Ero Copper Corp., a mining company, focuses on the production, exploration, and development of mining projects in Brazil. The company also explores for copper, gold, and silver deposits. Its principal property is the Vale do Curaçá property covering an area of approximately 153,741 hectares located in the northeastern Bahia State, Brazil. The company also holds interests in the Boa Esperança project covering an area of approximately 4,034 hectares located in Pará, Brazil; and NX gold mine covering an area of approximately 31,096 located in Mato Grosso, Brazil. Ero Copper Corp. was incorporated in 2016 and is headquartered in Vancouver, Canada.

Seabridge Gold Inc., together with its subsidiaries, engages in the acquisition and exploration of gold properties in North America. The company also explores for copper, silver, rhenium, and molybdenum ores. Its principal projects are 100% owned Kerr-Sulphurets-Mitchell property and Iskut project located in British Columbia, Canada; Courageous Lake property situated in Northwest Territories, Canada; Snowstorm project located in the Getchell Gold Belt of Northern Nevada; and 3 Aces project located in the Yukon Territory. The company was formerly known as Seabridge Resources Inc. and changed its name to Seabridge Gold Inc. in June 2002. Seabridge Gold Inc. was incorporated in 1979 and is headquartered in Toronto, Canada.

Aurelia Metals Limited explores for and develops mineral properties in Australia. The company primarily explores for gold, silver, lead, zinc, and copper deposits. It owns 100% interests in the Hera mine located to the south-east of Cobar, New South Wales; and the Peak mine situated in the northern part of the Cobar Basin, New South Wales, as well as the Dargues mine located in southeastern New South Wales. The company was formerly known as YTC Resources Limited and changed its name to Aurelia Metals Limited in June 2014. Aurelia Metals Limited was incorporated in 2004 and is headquartered in Brisbane, Australia.