Jonathan Mariner

IEX Group, Inc. operates an online trading platform for registered broker dealers. It operates as equity trading venue owned by a consortium of buy-side investors, including mutual funds, hedge funds, and family offices. The firm provides balanced marketplace via simplified market structure design and cutting-edge technology. It also offers a fair-access platform to broker dealer. The IEX ATS is a fully automated electronic order book for orders to buy and sell national market system equity securities with a continuous, automated matching function. The company was founded by Ronan Ryan, Bradley Katsuyama, Robert Park and John Schwall in 2012 and is headquartered in New York, NY.

Mpowerd, Inc. develops, manufactures and markets transformative energy products. Its products include micro solar lantern and task light, and inflatable LED solar lantern. The company was founded by John Salzinger, Jason Alan Snyder, Jacques-Philippe Piverger, Jill Van den Brule, Charles Andrews and Steven Gundersen in 2012 and is headquartered in New York, NY.

McGraw-Hill Education, Inc. publishes and distributes educational content, software and services. The firm operates through four segments: Higher Education, K-12, International and Professional. The higher education segment relates to the development of product across all disciplines, the K-12 segment relates to content development and the international segment relates to locally developed products or adaptations and translations of existing higher education, K-12 and professional products in both digital and print format. The professional segment relates to new titles and revisions, similar to the higher education segment, and include activities related to the creation of the actual product. The company was founded by James Hill McGraw in 1888 and is headquartered in New York, NY.

MLB Advanced Media LP engages in the provision of interactive media Internet services with regards to baseball. The firm delivers news, schedules, standings, and statistics from around the league as well as information on each of MLB's teams. It also offers baseball information on the web, including up-to-date statistics, game summaries, historical information, and features about events and programs. The company was founded in June 2000 and is headquartered in New York, NY.

Major League Baseball Blue, Inc. engages in the operations of baseball clubs. It owns and manages sports related activities and events including professional and amateur sports teams, leagues, and associations. It also sells national broadcasting rights and distributes fees to the teams. The company was founded in 1876 and is headquartered in New York City, NY.

Rocket Mortgage LLC provides retail mortgage lending services. It offers fixed and adjustable rate loans, refinancing, reverse mortgage, and federal and veteran housing plans. The company was founded by Dan Gilbert in 1985 and is headquartered in Plymouth, MI.

Little League Baseball, Inc. operates and organizes baseball and softball leagues. The firm provides physical facilities and volunteer services. The company was founded by Carl E. Stotz in 1939 and is headquartered in Williamsport, PA.

Miami Marlins LP owns and operates a professional baseball franchise. The company was founded on December 22, 1999 and is headquartered in Miami, FL.

The Knight Commission on Intercollegiate Athletics is an organization that advocates for reforms to enhance the educational aspect of college sports. The non-profit company is based in Washington. The commission aims to support and strengthen the educational mission of college sports.

Florida Panthers Hockey Club Ltd. operates as a professional ice hockey team. The company was founded in 1993 and is headquartered in Sunrise, FL.

Charter Schools USA, Inc. provides education services. The private company is based in Fort Lauderdale, FL and has subsidiaries in United States.

Ron Brown Scholar Program operates as a non-profit organization. provides scholarship programs. The company is headquartered in Charlottesville, VA.

Affiliated FM Insurance Co. provides property insurance services. It offers risk identification, risk management, and risk improvement. The company was founded on May 6, 1949 and is headquartered in Montreal, Canada.

Technology Frontiers (India) Pvt Ltd. designs and develops LED digital solutions for the sports, entertainment and media sectors. It offers Integra series, Alpha series, IFX series, Brimhast, Kshetra, Fan Fare, Fan Engagement, Maplytiks, 3 Vu, Ground Reality and Bolite. The firm also offers LED display systems, digital suite LED perimeter systems, electronic scoreboards, customized sports software, arena management displays and gaming solutions. The company was founded in 1996 and is headquartered in Chennai, India.

The Florida Marlins, led by Jeffrey Loria, are a private group.

McGraw-Hill Global Education Holdings LLC provides educational materials and learning services to the college, university, professional, and adult education markets. It offers online access to articles, research updates, illustrations, news headlines, and biographies. The firm also publishes in the traditional way for the Pre-K through 12th grade, assessment, higher education and professional markets. The company is headquartered in New York, NY.

Enjoy Technology LLC operates a personal commerce platform. It offers mobile store, customer experience, personal commerce, technology, and retail sales. The company was founded by Ronald B. Johnson in 2014 and is headquartered in Menlo Park, CA.

Investors Exchange LLC provides stock exchange services. The private company is based in New York, NY. The company was founded in 2013. The CEO is Bradley Katsuyama.

OneStream Software LLC engages in the development of corporate performance management software. It enables the enterprise to simplify financial consolidation, reporting, budgeting, and forecasting. Its services include support, training, and implementation. The company was founded by Thomas Shea, Robert Powers, Matt Baranowski, Jeff DeGrieck, and Craig Colby in 2010 and is headquartered in Rochester, MI.

Overtime Sports, Inc. operates a mobile application that allows users to film highlights and add slow-mo to capture the best moments in a sporting event. The company was founded by Daniel Porter and Zach Weiner in 2016 and is headquartered in Brooklyn, NY.

Legacy Enjoy, Inc. operates mobile stores that provide home delivery, set up, and a full shopping experience for premium companies. It operates through the North America and Europe geographical segments. The North America segment consists of operations within the United States and Canada. The Europe segment includes operations within the United Kingdom. The company was founded by Ronald B. Johnson and Tom Suiter in May 2014 and is headquartered in Palo Alto, CA.

Ultimate Software Group, Inc. provides cloud-based human capital management software. The private company is based in Weston, FL.