Aercap Holdings is an integrated global aviation company engaged in aircraft leasing. Co. acquires aviation assets at attractive prices, lease the assets to suitable lessees, and manage the funding and other lease related costs efficiently. Co. also provides aircraft management services. Co. operates its business on a global basis, providing aircraft to customers in every major geographical region. As of Dec 31 2017, Co. owned 980 aircraft and managed 113 aircraft.

Allstate is a holding company. Through its subsidiaries, the company is engaged in the property and casualty insurance business. The company's segments include: Allstate Protection, which provides private passenger auto, homeowners, other personal lines and commercial insurance; Service Businesses, which includes SquareTrade that provides consumer protection plans and related technical support; Allstate Life, which provides interest-sensitive and variable life insurance products, as well as distributes non-proprietary retirement products; and Allstate Benefits, which provides voluntary benefits products, including life, accident, critical illness, and other health insurance products.

ATN International is a holding company that, directly and through its subsidiaries, owns and operates telecommunications and renewable energy businesses in North America, India, Bermuda and the Caribbean. The company has three segments: U.S. Telecom, which provides wholesale wireless voice and data roaming services to national, regional, local and selected international wireless carriers in rural markets located mainly in the Southwest and Midwest U.S.; International Telecom, which includes voice and data services to retail customers in Bermuda, Guyana and the U.S. Virgin Islands; and Renewable Energy, which provides distributed generation solar power to corporate, utility and municipal customers.

Berkshire Hathaway is a holding company. Co.'s subsidiaries are engaged in several business activities which include: underwriting private passenger automobile insurance; operation of a railroad system in North America; regulated electric and gas utility; manufacturing of products including industrial, consumer and building products; wholesale distribution of groceries and non-food items; provider of services including aviation pilot training, electronic components distribution and retailing businesses, including automotive dealerships; and manufactured housing and related consumer financing, transportation equipment, manufacturing and leasing, and furniture leasing.

Canadian National Railway, together with its wholly-owned subsidiaries, is engaged in the rail and related transportation business. Co.'s network of approximately 20,000 route miles of track spans Canada and mid-America, from the Atlantic and Pacific oceans to the Gulf of Mexico. Co.'s network and connections to all Class I railroads provide access to all three North American Free Trade Agreement nations. Co. handles and carries cargo, serving exporters, importers, retailers, farmers and manufacturers. Co. is engaged in the movement of a portfolio of goods, including petroleum and chemicals, grain and fertilizers, coal, metals and minerals, forest products, intermodal and automotive.

Cboe Global Markets is an exchange holding company. Through its subsidiaries, the company provides trading and investment solutions to investors. The company provides trading across a range of products in various asset classes and geographies, such as options, futures, United States and European equities, exchange-traded products, global foreign exchange and multi-asset volatility products based on the Cboe Volatility Index exchange-traded options and futures products. In addition to its exchanges providing a marketplace and listing venue for the trading of securities and derivatives the company calculates proprietary indices that are used as the basis for proprietary products or licensed for use by third parties.

Dollar General is a discount retailer. The company's consumables products includes paper and cleaning products, packaged food, perishables, snacks, health and beauty, pet, and tobacco products. The company's seasonal products include decorations, toys, batteries, small electronics, greeting cards, stationery, prepaid phones and accessories, gardening supplies, hardware, automotive and home office supplies. The company's home products include kitchen supplies, cookware, small appliances, light bulbs, storage containers, frames, candles, craft supplies and kitchen, bed and bath soft goods. The company's apparel includes casual everyday apparel, as well as socks, underwear, disposable diapers, shoes and accessories.

Donegal Group is an insurance holding company. Through its insurance subsidiaries, the company provides personal and commercial lines of property and casualty insurance. The company has three segments: its investment function, its commercial lines of insurance and its personal lines of insurance. The company's insurance operations consist of two segments: commercial lines of insurance and personal lines of insurance. The commercial lines its insurance subsidiaries write consist primarily of commercial automobile, commercial multi-peril and workers' compensation insurance. The personal lines its insurance subsidiaries write consist primarily of private passenger automobile and homeowner's insurance.

Employers Holdings is a holding company. Through its wholly owned insurance subsidiaries, the company is engaged as a providers of workers' compensation insurance and services focused on select, small businesses engaged in low-to-medium hazard industries. The company provides insurance through Employers Insurance Company of Nevada, Employers Compensation Insurance Company, Employers Preferred Insurance Company, Employers Assurance Company and Cerity Insurance Company. Workers' compensation provides insurance coverage for the statutorily prescribed benefits that employers are required to provide to their employees who may be injured or suffer illness in the course of employment.

Fidelity National Financial is a provider of title insurance, escrow and other title-related services, including trust activities, trustee sales guarantees, recordings and reconveyances and home warranty products and transaction services to the real estate and mortgage industries. The company has two segments: Title, which consists of the operations of the company's title insurance underwriters and related businesses which provide title insurance and escrow and other title-related services including trust activities, trustee sales guarantees, and home warranty products; and Corporate and Other, which includes the operations of the parent holding company, and the company's real estate technology subsidiaries.

Flatex AG, formerly known as Fintech Group AG, is a Germany-based company engaged in the financial technology sector. The Company divides its business into two operational segments: Securities Trading and Financial Services (ST & FS) and Transaction Processing and White-Label Banking Services (TP & WLBS). The ST & FS segment includes online brokerage in the business-to-consumer (B2C) sector in Germany (on trading platforms such as flatex.de, vitrade.de) and Austria (flatex.at). The operations are conducted by the subsidiaries flatex GmbH and ViTrade GmbH. The TP & WLBS segment includes the business-to-business (B2B) activities of subsidiaries XCOM AG and FinTech Group Bank AG that focus on research and development in the area of financial technology and provide back-end execution of securities transactions for the Company's own platforms and for other banks, as well as offer business process outsourcing services.

Freeport-McMoRan is a holding company. Through its subsidiaries, the company is a mining company. The company operates assets with proven and probable reserves of copper, gold and molybdenum, and the company is a publicly traded copper producer. The company's portfolio of assets includes the Grasberg minerals district in Indonesia, copper and gold deposits; and mining operations in North America and South America, including the Morenci minerals district in Arizona and the Cerro Verde operation in Peru. The company has organized its mining operations into four primary divisions: North America copper mines, South America mining, Indonesia mining and Molybdenum mines.

The Hanover Insurance Group is a holding company. Through its subsidiaries, the company business operations are property and casualty insurance products and services. The company markets its products and services through independent agents and brokers. The company conducts three operating segments: Commercial Lines, which includes commercial multiple peril, commercial automobile, workers' compensation, and other commercial coverages; Personal Lines, which includes personal automobile, homeowners, and other personal coverages; and Other, which provides investment advisory services to affiliates and also manages assets for unaffiliated institutions such as insurance companies, retirement plans and foundations.

Heritage Insurance Holdings is a property and casualty insurance holding company. Through its subsidiaries, the company writes personal residential property insurance for single-family homeowners and condominium owners, and rental property insurance in Alabama, Connecticut, Florida, Georgia, Hawaii, Massachusetts, New Jersey, New York, North Carolina, Rhode Island and South Carolina. The company also provides commercial residential insurance for Florida properties and is also licensed in Maryland, Mississippi, Pennsylvania, and Virginia. The company controls or manages substantially all aspects of insurance underwriting, customer service, actuarial analysis, distribution and claims processing and adjusting.

Kroger operates as a retailer. The company also manufacture and process some of the food for sale in its supermarkets. Supermarkets are operated under one of the following formats: combination food and drug stores (combo stores); multi-department stores; marketplace stores; or price impact warehouses. The combo stores provide food and organic sections, pharmacies, general merchandise, pet centers and perishables such as seafood and organic produce. Marketplace provide grocery, pharmacy and health and beauty care departments as well as perishable offering and general merchandise area that includes apparel, home goods and toys.

LifeVantage is a company focused on biohacking the aging code through nutrigenomics, the study of how nutrition and naturally occurring compounds affect its genes to support good health. The company is engaged in the identification, research, development and distribution of nutraceutical dietary supplements and personal care products, including its scientifically-validated Protandim? line of dietary supplements, LifeVantage? Omega+ and ProBio dietary supplements, TrueScience?, its line of skin and hair care products, Petandim? for Dogs, its companion pet supplement formulated to combat oxidative stress in dogs, Axio?, its Smart Energy Drink mixes, and PhysIQ?, its Smart Weight Management System.

MarketAxess Holdings operates an electronic trading platform that enables fixed-income market participants to trade corporate bonds and other types of fixed-income instruments using its patented technology. Through its Open Trading? protocols, the company executes trades in certain bond between and among institutional investor and broker-dealer clients. The company also provides trading-related products and services, including: Composite+ pricing and other market data products to assist clients with trading decisions; auto-execution and other execution services for clients requiring specialized workflow solutions; connectivity solutions that facilitate straight-through processing; and technology services.

Mercury Systems is a commercial provider of sensor and safety processing subsystems. The company delivers solutions for a range of aerospace, commercial aviation, defense and intelligence programs. The company's products and solutions have been deployed in various programs with different defense prime contractors. The company's technologies and capabilities include embedded processing modules and subsystems, mission computers, rack-mount servers, avionics, radio frequency components, multi-function assemblies and subsystems. The company delivers subsystem level engineering capability and ongoing systems integration services to the subsystem market within the defense embedded electronics market segment.

OptimizeRx is a digital health company. The company provides electronic clinical information via electronic health record companies. The company's principal products and applications include: financial messaging, which is a virtual Patient Support Center that allows doctors and staff to access sample vouchers, co-pay coupons and other patient support through their EMR and/or e-Prescribe systems to search, print or electronically dispense directly; brand and clinical messaging, which includes a variety of brand awareness and clinical messaging services that can be tailored; and digital therapeutics, which consist of delivering patient programs with treatment and affordability information, and among others.

Southern Copper is a copper producer. The company's mining, smelting and refining facilities are located in Peru and Mexico and the company conducts exploration activities in those countries and in Argentina, Chile and Ecuador. The company's Peruvian copper operations involve mining, milling and flotation of copper ore to produce copper concentrates and molybdenum concentrates, the smelting of copper concentrates to produce blister and anode copper, and the refining of anode copper to produce copper cathodes. The company's Mexican operations are conducted through its subsidiary, Minera Mexico, S.A. de C.V., which engages primarily in the mining and processing of copper, molybdenum, zinc, silver, gold and lead.

Sturm, Ruger & Company is primarily engaged in the design, manufacture, and sale of firearms to domestic customers. The company has two reportable operating segments, which are firearms and castings. The firearms segment manufactures and sells rifles, pistols, and revolvers under the Ruger name and trademark. Most firearms are available in several models based upon caliber, finish, barrel length, and other features. The castings segment manufactures and sells investment castings made from steel alloys and metal injection molding (MIM) parts for internal use in the firearms segment. The castings and MIM parts sold to outside customers, either directly or through manufacturers' representatives.

Synalloy is engaged in the following segments, the Metals segment and the Specialty Chemicals segment. The Metals segment manufactures welded pipe and tube, primarily from stainless steel, duplex, and nickel alloys; manufactures fiberglass and steel storage tanks; distributes hot finish, seamless, carbon steel pipe and tubing; and manufactures ornamental stainless steel tubing. The Specialty Chemicals segment manufactures lubricants, surfactants, defoamers, reaction intermediaries, and sulfated fats and oils, and provides chemical tolling manufacturing resources to global and regional companies and contracts with other chemical companies to manufacture certain pre-defined products.

Verizon Communications is a holding company. Through its subsidiaries, the company provides communications, information and entertainment products and services to consumers, businesses and governmental agencies. The company has two reportable segments, Verizon Consumer Group (Consumer) and Verizon Business Group (Business). The company's Consumer segment provides consumer-focused wireless and wireline communications services and products under the Verizon brand and through wholesale and other arrangements. The company's Business segment provides, among others, wireless and wireline communications services and products, video and data services, corporate networking solutions, security and managed network services.

Zimmer Biomet Holdings is engaged in musculoskeletal healthcare. The company's products are: Knees, which includes knee replacement surgeries; Hips, which includes hip replacement surgeries; S.E.T., which includes surgical, sports medicine, biologics, foot and ankle, extremities and trauma products; Spine and Craniomaxillofacial and Thoracic, which designs, manufactures and distributes medical devices and surgical instruments, as well as provides face and skull reconstruction products; Dental, which manufactures and/or distributes dental reconstructive implants, dental prosthetic products and dental regenerative products; and Other, which includes bone cement and office based technology products.