Alphatec Holdings is a holding company. Through its wholly owned subsidiaries, Alphatec Spine, Inc. and SafeOp Surgical, Inc., the company is a medical technology company that designs, develops, and markets technology for for the treatment of spinal disorders associated with disease and degeneration, congenital deformities, and trauma. The company's principal procedural offerings include a variety of Spine Approach Technologies?. The company's Spine Approach Technologies are comprised of intra-operative information and neuromonitoring technologies, access systems, interbody implants, fixation systems, and various biologics offerings.

Amneal Pharmaceuticals is a holding companies. Through its subsidiaries, the company is a pharmaceutical company enganged in developing, manufacturing, marketing and distributing pharmaceutical products in a variety of dosage forms and therapeutic categories. The company's pharmaceutical research includes analytical and formulation development and stability. The company has two business segments: Generics, which products are sold either as branded or generic products; and Specialty, which is engaged in the development, promotion, sale and distribution of proprietary branded pharmaceutical products, with a focus on products addressing central nervous system disorders, including migraine and Parkinson's disease.

Aspen Aerogels is an aerogel technology company that designs, develops and manufactures aerogel insulation used primarily in the energy infrastructure and building materials markets. The company also conducts research and development related to aerogel technology. The company's product lines include: Pyrogel XT-E, which is designed for use in refineries and petrochemical facilities; Pyrogel XTF, which is designed to provide protection against fire; Cryogel Z, which is designed for sub-ambient and cryogenic applications in the energy infrastructure market; and Spaceloft Subsea, which is designed for use in pipe-in-pipe applications in offshore oil production.

Aurinia Pharmaceuticals is a biopharmaceutical company engaged in the business of development and commercialization of therapeutic drugs.

AXT is a developer and producer of compound and single element semiconductor substrates, also known as wafers. The company's compound substrates combine indium with phosphorous (indium phosphide: InP) or gallium with arsenic (gallium arsenide: GaAs). InP is a semiconductor substrate used in, among others, fiber optic lasers and detectors, passive optical networks, metro and data center connectivity, silicon photonics, infrared motion control and infrared thermal imaging. The company also makes semi-insulating GaAs substrates used in making semiconductor chips in applications such as power amplifiers for wireless devices, transistors and solar cells for drones. In addition, the company sells certain raw materials.

Bio-Rad Laboratories is a manufacturer and distributor of its own life science research and clinical diagnostics products. The company has two primary segments: Life Science, which is engaged in the life sciences market and develops, manufactures and markets reagents, apparatus and laboratory instruments; and Clinical Diagnostics, which designs, manufactures, sells and supports test systems, informatics systems, test kits and quality controls that serve clinical laboratories in the diagnostics market. The company sells its products and services to a client base comprised of scientific research, healthcare, education and government customers.

BJ's Restaurants operates in the casual dining segment of the restaurant industry. The company's restaurants feature a number of menu offerings including: slow roasted entrees, such as, prime rib; EnLIGHTened Entrees? such as its Cherry Chipotle Glazed Salmon; its deep-dish pizza; the Pizookie? dessert; and its BJ's proprietary craft beers. The company owns and operates restaurants located in various states, and its proprietary craft beer is produced at various locations, its Temple, TX brewpub locations and by independent third party brewers using its proprietary recipes. The company also produces its proprietary non-alcoholic craft sodas including root beer, ginger beer, cream, orange and black cherry soda.

Bruker is a developer, manufacturer and distributor of scientific instruments and analytical and diagnostic solutions. Majority of the company's products are used to detect, measure and visualize structural characteristics of chemical, biological and industrial material samples. The company also develops, manufactures and distributes a range of field analytical systems for chemical, biological, radiological, nuclear and explosives detection. The company also develops, manufactures and markets high and low temperature superconducting materials and devices based primarily on metallic low temperature superconductors. The company's segments include: Bruker Scientific Instruments and Bruker Energy and Supercon Technologies.

Castle Biosciences is a commercial-stage dermatological cancer company focused on providing physicians and their patients with personalized, clinically actionable genomic information to make treatment decisions. The company's main product, DecisionDx-Melanoma, is a proprietary multi-gene expression profile (GEP) test that predicts the risk of metastasis or recurrence for patients diagnosed with invasive cutaneous melanoma, a deadly skin cancer. The company also markets DecisionDx-UM, which is a proprietary GEP test that predicts the risk of metastasis for patients with uveal melanoma, a rare eye cancer. The company is developing additional products in treating their patients' skin cancer, such as DecisionDx-SCC.

El Pollo Loco Holdings is a holding company. Through its subsidiary, El Pollo Loco, Inc., the company develops, franchises, licenses and operates quick-service restaurants under the name El Pollo Loco ?. The restaurants, which are located principally in California but also in Arizona, Nevada, Texas, Utah and Louisiana, engaged in flame-grilled chicken in a variety of contemporary Mexican-influenced entrees, including chicken burritos, chicken quesadillas, chicken tortilla soup, variations on its Pollo Bowl? and Pollo Salads. The company serves individual and family-sized chicken meals, a variety of Mexican-inspired entrees, and sides, and, on a limited-time basis, additional proteins like shrimp.

Exponent is a science and engineering consulting firm. The company serves clients in chemical, construction, consumer products, energy, food, beverage and nutrition, government, life sciences, insurance, manufacturing, technology, industrial equipment, transportation and other sectors of the economy. The company's service offerings are provided on a project-by-project basis. The company has two segments: Engineering and Other Scientific, which is a service group providing technical consulting in different practices primarily in engineering; and Environmental and Health, which provides a range of consulting services relating to environmental hazards and risks and the effect on both human health and the environment.

First Solar is a provider of photovoltaic (PV) solar energy solutions. The company designs, manufactures and sells PV solar modules with a thin film semiconductor technology, and also develops and sells PV solar power systems that mainly use the modules it manufactures. The company also provides operations and maintenance (O&M) services to system owners. The company's modules segment involves the design, manufacture and sale of cadmium telluride solar modules, which convert sunlight into electricity. The company's second segment is its systems segment, through which it provides power plant solutions, which include project development, engineering, procurement, and construction services and O&M services.

Galectin Therapeutics is a clinical stage biopharmaceutical company engaged in drug research and development to create therapies for fibrotic disease, severe skin disease, and cancer. The company is using its galectin-3 inhibitor, GR-MD-02 to treat liver fibrosis and liver cirrhosis in non-alcoholic steatohepatitis patients. The company has established several collaborative scientific discovery programs in carbohydrate chemistry and characterization. The company also has established through its subsidiary, Galectin Sciences LLC, a discovery program for the targeted development of small molecules (generally, non-carbohydrate) that bind galectin proteins.

Hallador Energy is engaged in the production of steam coal from mines located in western Indiana. The company also owns a 50% interest in Sunrise Energy, LLC, a private gas exploration company with operations in Indiana. Additionally, the company owns 100% of Hourglass Sands, LLC, a frac sand mining company in the State of Colorado.

Illumina is engaged in sequencing- and array-based solutions for genetic and genomic analysis. The company provides whole-genome sequencing, genotyping, noninvasive prenatal testing (NIPT), and product support services. Using the company's services, customers can perform whole-genome sequencing projects and microarray projects (including large-scale genotyping studies and whole-genome association studies). The company provides NIPT services through its partner laboratories that direct samples to the company on a test send-out basis in its Clinical Laboratory Improvements Amendments-certified, College of Pathologists-accredited laboratory. The company also provides support services to customers who have purchased its products.

LightPath Technologies manufactures optical components and assemblies, including precision molded glass aspheric optics, molded and diamond-turned infrared aspheric lenses and other optical materials used to produce products that manipulate light. The company designs, develops, manufactures and distributes optical components and assemblies utilizing optical manufacturing processes. The company's products are incorporated into sqveral applications. These applications include defense and medical devices, laser aided industrial tools, automotive safety applications, barcode scanners, optical data storage, hybrid fiber coax datacom, telecommunication optical networks, machine vision and sensors, among others.

LPL Financial Holdings is a holding company. Through its subsidiaries, the company is engaged in the retail financial advice market and independent broker-dealer. The company's product and solution access includes: Commission-Based Products, which include variable and fixed annuities, mutual funds, equities, and insurance, among others; Fee-Based Advisory Platforms and Support, which include wrap-fee programs, mutual fund asset allocation programs, financial planning services, and retirement plan consulting services; and Cash Sweep Programs, which manage their clients' cash balances through a money market sweep vehicle involving money market fund providers and insured sweep vehicles involving banks.

Merit Medical Systems manufactures and markets proprietary disposable medical devices used in interventional, diagnostic and therapeutic procedures, particularly in cardiology, radiology, oncology, critical care and endoscopy. The company conducts its business through two segments: Cardiovascular, which includes its Peripheral Intervention, Cardiac Intervention, Cardiovascular and Critical Care, Interventional Oncology and Spine and Breast Cancer Localization and Guidance product groups; and Endoscopy, which provides non-vascular stents to treat gastrointestinal and pulmonary disease including AERO?, AEROmini? and AERO DV? Fully Covered Tracheobronchial Stents and Alimaxx-B? Biliary Stent Systems.

Ninh Van Bay Travel Real Estate Joint Stock Company is a Vietnam-based company engaged in the development and operations of resorts. The Company also operates restaurants and provides real estate management services. It trades construction materials, metals and supplies, sanitary wares and interior decorations, as well as constructs infrastructures. Through its subsidiaries, it is involved in the provision of tourism services. The Company has two subsidiaries, namely Hai Dung Company Limited and Hong Hai Tourism Joint Stock Company.

Northwest Pipe is a manufacturer of engineered welded steel pipe water systems in North America. The company's solution-based products serve a range of markets including water transmission, plant piping, tunnels, and river crossings. The company manufactures Permalok? steel casing pipe, which is a pipe joining system that employs a press-fit interlocking connection system. The company added T-Lock? and Arrow-Lock? Sheet Lining Systems to its product line. T-Lock? is applied during concrete casting and permanently locks into place as a part of the substrate. Arrow-Lock? can be used in both new and rehabilitation projects.

Omega Healthcare Investors is a real estate investment trust. The company has one reportable segment consisting of investments in healthcare-related real estate properties located in the United States and the United Kingdom. The company's main business is to provide financing and capital to the long-term healthcare industry with a particular focus on skilled nursing facilities, and assisted living facilities, and to a lesser extent, independent living facilities, and rehabilitation and acute care facilities and medical office buildings. The company's main portfolio consists of long-term leases and mortgage agreements.

OSI Systems, together with its subsidiaries, is a designer and manufacturer of electronic systems and components for applications. The company sells its products and provides related services in various markets, including homeland security, healthcare, defense and aerospace. The company's operating divisions are: Security, which provides security and inspection systems, security screening solutions and related services; Healthcare, which provides patient monitoring, diagnostic cardiology, and anesthesia delivery and ventilation systems; Optoelectronics and Manufacturing, which provides electronic components and electronic manufacturing services for the Security and Healthcare divisions.

Peabody Energy is a coal company, engaged in the mining of thermal coal for sale primarily to electric utilities and metallurgical coal for sale to industrial customers. The company owns interests in several coal mining operations located in the U.S. and Australia. The company has a majority interest in several of those mining operations and an equity interest in Middlemount Coal Pty Ltd. (Middlemount), which owns the Middlemount Mine in Queensland, Australia. In addition to its mining operations, the company markets and brokers coal from other coal producers, both as principal and agent, and trade coal and freight-related contracts through trading and business offices in the U.S., Australia, China, and the U.K.

Quaker Chemical develops, produces, and markets a range of formulated specialty chemical products and provides chemical management services for various industrial and manufacturing applications throughout its four segments: Americas; Europe, Middle East and Africa; Asia/Pacific; and Global Specialty Businesses. The primary product lines of the company include metal removal fluids, cleaning fluids, corrosion inhibitors, metal drawing and forming fluids, die cast mold releases, heat treatment and quenchants, metal forging fluids, hydraulic fluids, specialty greases, offshore sub-sea energy control fluids, rolling lubricants, rod and wire drawing fluids and surface treatment chemicals.

QuickLogic is a fabless semiconductor company that develops low power multi-core semiconductor platforms and intellectual property for artificial intelligence, voice and sensor processing. The company's solutions are created from its silicon platforms including its EOS?, QuickAI?, SensiML Analytics Studio, ArcticLink? III, PolarPro?3, PolarPro II, PolarPro, and Eclipse II products. The company's mature products include primarily FPGA families named pASIC?3 and QuickRAM? as well as programming hardware and design software. The company's solutions typically fall into one of three categories: Sensor Processing, Display and Visual Enhancement, and Smart connectivity.

StealthGas is an owner of a fleet of liquified petroleum gas (LPG) carriers providing international seaborne transportation services to LPG producers and users, as well as crude oil and product carriers chartered to oil producers, refiners and commodities traders. Co.'s LPG carriers carry various petroleum gas products in liquefied form, including propane, butane, butadiene, isopropane, propylene and vinyl chloride monomer, which are all byproducts of the production of crude oil and natural gas. As of Apr 1 2018, Co.'s fleet consisted of 51 LPG carriers, including three chartered-in LPG carriers, three product carriers, and one Aframax crude oil tanker.

Sunrun is engaged in the design, development, installation, sale, ownership, and maintenance of residential solar energy systems. The company's main solar service offerings are provided through its lease and power purchase agreements, which it refers to as its Customer Agreements. While homeowners have the option to purchase a solar energy system outright from the company, a majority of its customers choose to buy solar as a service through its Customer Agreements. With its solar service offerings, the company installs solar energy systems on its customers' homes and provides them the solar power produced by those systems. In addition, the company monitors, maintains and insures the system during the term of the contract.

TTM Technologies is a printed circuit board (PCB) manufacturer. The company provides a range of PCB products, radio-frequency (RF) components, and electro-mechanical solutions, including conventional PCBs, RF and microwave circuits, high density interconnect PCBs, substrate-like PCBs, flexible PCBs, rigid-flex PCBs, custom assemblies and system integration, integrated circuits substrates, passive RF components, advanced ceramic RF components, hi-reliability multi-chip modules, and beamforming and switching networks. The company also provides certain services, which includes design-for-manufacturability, PCB layout design, simulation and testing services, and quick turnaround production.

Twilio provides a cloud communications platform that enables developers to build, scale and operate communications within their software applications via the company's Application Programming Interfaces (APIs). The company's platform consists of three layers: Engagement Cloud, which provides functionality for a specific purpose, such as two-factor authentication or a contact center; Programmable Communications Cloud, which provides a range of products that enables developers to embed voice, messaging and video capabilities into their applications; and Super Network, which contains a set of API's giving the company's customers access to components of its platform.

Warrior Met Coal is a holding company. Through its subsidiaries, the company is a producer and exporter of met coal. The company sells its coal product to steel producers in Europe and South America. The company's mining operations consist of two underground met coal mines in Southern Appalachia's coal seam (Mines No. 7 and No. 4) and other surface met and thermal coal mines. The company's natural gas operations remove and sell natural gas from the coal seams owned or leased by the company and others as a byproduct of coal production. The company's degasification operations improve mining operations and safety by reducing natural gas levels in its mines. The company also owns mineral rights for recoverable reserves at its Blue Creek Energy Mine.

Western Digital is a developer, manufacturer, and provider of data storage devices and solutions. The company's portfolio of technology and products address the following markets: Client Devices, which consist of hard disk drives (HDDs) and solid state drives (SSDs) for computing devices, flash-based embedded storage products, and flash-based memory wafers and components; Data Center Devices and Solutions, which consist of enterprise HDDs and enterprise SSDs, data center software and system solutions; and Client Solutions, which consist of HDDs and SSDs embedded into external storage products and removable flash-based products, such as cards, universal serial bus flash drives and wireless drives.

Yandex is an internet and technology company that operates an internet search engine in Russia. Co. builds intelligent products and services powered by machine learning. Co.'s products and services are based on complex, unique technologies that are not easily replicated. Co. generates substantially all of its revenues from online advertising. Co. also generates revenues from its e-commerce offerings, classifieds and e-hailing service. Co.'s businesses are organized in the following operating segments: Search and Portal; E-commerce; Taxi; Classifieds and Experimental businesses.