Question: Who founded the American investment management firm that managed Numerai's investment group?

Context paragraphs:
Numerai: Numerai is an AI-run, crowd-sourced hedge fund based in San Francisco.  It was created by South African technologist Richard Craib in October 2015.  Numerai’s trades are determined by an AI, which is fueled by a network of thousands of anonymous data scientists.  Numerai's investment group was led by Howard Morgan of Renaissance Technologies, and its investors include Naval Ravikant.

Renaissance Technologies: Renaissance Technologies LLC is an East Setauket, New York-based American investment management firm founded in 1982 by James Simons, an award-winning mathematician and former Cold War code breaker, which specializes in systematic trading using only quantitative models derived from mathematical and statistical analyses.  Renaissance is one of the first highly successful hedge funds using quantitative trading—known as "quant hedge funds"—that rely on powerful computers and sophisticated mathematics to guide investment strategies.

Fortress Investment Group: Fortress Investment Group is an investment management firm based in New York City.  When, Fortress launched on the NYSE on February 9, 2007 with Goldman Sachs and Lehman Brothers underwriting the IPO, it was the first large private equity firm in the United States to be traded publicly.  As of June 30, 2016, the firm managed approximately $70.2 billion alternative assets in private equity, liquid hedge funds and credit funds.  In 2014, Fortress Investment Group was named "Hedge Fund Manager of the Year" by "Institutional Investor" and "Management Firm of the Year" by "HFMWeek".  Fortress has previously been recognized by "Institutional Investor" as “Discretionary Macro-Focused Hedge Fund of the Year” for 2012, and “Credit-Focused Fund of the Year” for both 2011 and 2010.

Separately managed account: A separately managed account (SMA) is a term within the investment management industry encompassing several different types of investment accounts.  For example, an SMA often is used to refer to an individual managed investment account often offered by a brokerage firm through one of their brokers or financial consultants and managed by independent investment management firms (often called money managers for short) and have varying fee structures.  These particular types of SMAs may be called "wrap fee" or "dual contract" accounts, depending on their structure.  There is no official designation for the SMA, but there are common characteristics that are represented in many types of SMA programs.  These characteristics include an open structure or flexible investment security choices; multiple money managers; and a customized investment portfolio formulated for a client's specific investment objectives or desired restrictions.

PIMCO: Pacific Investment Management Company, LLC (commonly called PIMCO), is an American investment management firm headquartered in Newport Beach, California, with over 2,000 employees working in 13 offices across 12 countries, and $1.51 trillion in assets under management as of 30 June 2016.  The company provides mutual funds and other portfolio management and asset allocation solutions for millions of investors worldwide.  PIMCO offers a broad list of investment strategies that encompass the entire risk spectrum and capital structure, including core bonds and credit, structured credit, alternatives, real assets, equities and currencies.

Brandywine Asset Management: Brandywine Asset Management, Inc. is an American investment management firm founded and managed by Michael Dever.  The firm is registered as a commodity trading advisor.

Richard C. Blum: Richard Charles Blum (born July 31, 1935) is an American investment banker.  He is the husband of United States Senator from California Dianne Feinstein.  He is the chairman and president of Blum Capital, an equity investment management firm that acts as general partner for various investment partnerships and provides investment advisory services.  Blum also serves in various boards of directors of several companies, including CB Richard Ellis.  He is also a regent of the University of California, where until May 2009 he served as the chairman of that board.

VanEck: Founded in 1955, VanEck is an investment management firm headquartered in New York, NY and having satellite offices in Frankfurt, Germany and Australia.  Van Eck Associates Corporation and Van Eck Securities Corporation are also referred to as VanEck.  VanEck Vectors ETFs (about 75% of assets under management) and VanEck Mutual Funds (about 25% of assets under management) represent the company's flagship investment offerings.  The majority of VanEck's assets are gold investments.  The actively managed VanEck Mutual Funds cover the natural resource equities and commodities markets, emerging markets equities, emerging markets bonds, and liquid alternatives asset classes.  The index-based VanEck Vectors ETFs are purpose-built, aimed at providing exposure to asset classes that are underrepresented in investor portfolios, or, offering an alternative approach to established investment categories.  The firm's products are sold nationwide through retail brokers, financial planners, and investment advisors.

Orbis Investment Management: Orbis Investment Management is an investment management firm headquartered in Bermuda, with offices in London, Vancouver, Sydney, San Francisco, Hong Kong, Tokyo and Luxembourg.  The company has a close relationship with Allan Gray Investment Management in South Africa and Allan Gray Australia.  Orbis manages approximately $25 billion on behalf of both institutional and individual investors.  Orbis Access, its direct-to-consumer platform, was launched in the UK in January 2015.

Strategic Investment Group: Strategic Investment Group (also known as Strategic Investment Partners, Inc. or SIP) is an American investment manager with approximately US$ 37 billion of assets under management.  The company is credited for pioneering the fund of funds investment strategy.  SIP was founded in 1987 by six executives from the pension investment group of the World Bank.

Supporting paragraphs: Numerai Renaissance Technologies
Answer: James Simons