Question: Which acquaintance of Thomas DeMark is the founder of Point72 Asset Management and S.A.C. Capital Advisors?

Context articles: Billions (TV series)
Thomas DeMark
Mathew Martoma
S.A.C. Capital Advisors
Deliveroo
Steven A. Cohen
Kevin J. O'Connor (attorney)
Point72 Asset Management
Investment control
Palisades Hudson Financial Group

Billions is an American television drama series created by Brian Koppelman, David Levien, and Andrew Ross Sorkin, starring Paul Giamatti and Damian Lewis, that premiered on Showtime on January 17, 2016.
 The series is loosely based on the activities of crusading federal prosecutor of financial crimes Preet Bharara, the former U.S. Attorney for the Southern District of New York, and his legal battles with hedge fund manager Steve Cohen of S.A.C. Capital Advisors.
 The second season premiered on February 19, 2017.
 On March 8, 2017, Showtime renewed the series for a third season.
Thomas DeMark is the founder and CEO of DeMark Analytics, LLC, creator of the DeMark Indicators, and has been a special consultant to Steven A. Cohen of Point 72 Asset Management, formerly known as S.A.C. Capital Advisors, for 20 years.
 DeMark's indicators are used in the market timing and technical analysis of financial markets.
 Some of his indicators include the following: Sequential®, Combo®, Setup®, Setup Trend (TDST)®, Countdown®, Range Expansion Index™, D-Wave®, TD Lines™, Differential™ and Camouflage®.
 DeMark’s recent stock market predictions include having forecast months in advance the October 4, 2011 US market bottom to within 1 point of the exact low and the precise Shanghai Composite market low on December 4, 2012, precise subsequent February 6, 2013 high, then June low and September 2013 high to the exact day.
Mathew Martoma (born May 18, 1974 as Ajai Mathew Mariamdani Thomas) is an American former hedge fund trader.
 As a former portfolio manager at S.A.C. Capital Advisors, a Stamford, Connecticut-based hedge fund, he was accused of generating possibly the largest single insider trading transaction profit in history at a value of $276 million.
 On November 20, 2014, he began serving a nine-year prison sentence.
SAC Capital Advisors was a group of hedge funds founded by Steven A. Cohen in 1992.
 The firm employed approximately 800 people in 2010 across its offices located in Stamford, Connecticut and New York City, and various international satellite offices, but reportedly lost many of its traders in the wake of various investigations by the SEC.
 In 2010, the SEC opened an insider trading investigation of SAC and in 2013 several former employees were indicted by the U.S. Department of Justice.
 In November 2013, the firm itself pleaded guilty to insider trading charges and paid $1.2 billion in penalties, although no formal charges have been filed against Mr. Cohen himself.
 The firm has shrunk after returning the vast majority of its outside (i.e. not controlled by Steven Cohen personally) investor capital.
 Point72 Asset Management was established as a separate family office in 2014.
 SAC ceased to exist as a separate entity in 2016.
Deliveroo is a British online food delivery company with operations spread across eighty-four cities in the UK, the Netherlands, France, Germany, Belgium, Ireland, Spain, Italy, Australia, Singapore, United Arab Emirates, and Hong Kong.
 It was founded in London in 2013 by Will Shu (a former economical analyst for S.A.C. Capital Advisors and ESO Capital and former investment banker at Morgan Stanley) and Greg Orlowski (who previously worked as a software developer and as a director of technology).
Steven A. Cohen (Born June 11, 1956) is an American investor, hedge fund manager, and philanthropist.
 He is the founder of Point72 Asset Management and S.A.C. Capital Advisors both based in Stamford, Connecticut.
Kevin J. O'Connor serves as general counsel at Point72 Asset Management.
 Previously, he served as an attorney appointed by President George W. Bush and was unanimously confirmed by the United States Senate as Connecticut’s 48th United States Attorney in 2002.
 From January to April 2006, O'Connor served as Associate Deputy Attorney General of the United States.
 In 2007, O'Connor served as Chief of Staff to United States Attorney General Alberto R. Gonzales.
 In 2008, O'Connor was unanimously confirmed as Associate Attorney General of the United States, the number three position at the U.S. Department of Justice (DOJ), a post he held until 2009, when he left the DOJ to join the law firm of Bracewell and Giuliani.
Point72 Asset Management, L.P., is an American family controlled investment company or family office managing the assets of its founder, Steven A. Cohen, and eligible employees.
 S.A.C. Capital Advisors was founded in 1992 and converted its investment operations to the Point72 Asset Management family office in 2014.
 As of 2015, Point72 employed approximately 1,000 people.
 The Firm's long/short investment divisions are Point72 Asset Management and EverPoint Asset Management.
 Cubist Systematic Strategies is its quantitative investing business.
 Point72 also operates Aperio, a "big data" research and investing unit.
 Point72 has its main office in Stamford, Connecticut and there are several satellite offices around the world.
Investment control or investment controlling is a monitoring function within the asset management, portfolio management or investment management.
 It is concerned with independently supervising and monitoring the quality of asset management accounts with the aim of ensuring performance and quality in order to provide the required benefit for the asset management client.
 Dependent on setup, investment controlling not only encompasses controlling activities but also can include areas from compliance to performance review.
 Investment controlling aspects can also be taken into consideration by asset management clients or investment advisers/consultants and consequently it is likely that these stakeholders also run certain investment controlling activities.
Palisades Hudson Financial Group LLC, was founded in 1993 by Larry M. Elkin.
 The fee-only financial and tax-planning firm also has an affiliated Registered Investment Adviser arm, Palisades Hudson Asset Management, L.P., which began in 1997.
 Palisades Hudson Asset Management had more than $1.1 billion in assets under management as of April 2013.
 It offers services including personal financial planning, estate planning, tax planning and tax return preparation, and (through Palisades Hudson Asset Management, L.P.) investment management and asset allocation.