In November 2017, Mercer announced he would step down from Renaissance Technologies and sell his stake in Breitbart News to his daughters.[10] He was the majority owner of SCL Group, a self-described "global elections management agency",[11] before it was dissolved in 2018.[3] In 2021, Mercer was involved in possibly the largest tax settlement in U.S. history, as he, James Simons, and other executives at the hedge fund Renaissance Technologies were ordered to pay as much as $7 billion to the IRS in back taxes.[12]
Mercer grew up in New Mexico. He developed an early interest in computers and in 1964 attended a National Youth Science Camp in West Virginia where he learned to program a donated IBM computer.[13] He went on to get a bachelor's degree in physics and mathematics from the University of New Mexico.[2] While working on his degree, he had a job at the Air Force Weapons Laboratory at Kirtland Air Force Base writing programs where, though he felt he produced good work, he felt it was not optimized. He later said the experience left him with a "jaundiced view" of government-funded research.[13] He earned a Ph.D. in computer science from the University of Illinois at Urbana–Champaign in 1972.[2]
In 1993, Mercer joined hedge fundRenaissance Technologies after being recruited by executive Nick Patterson.[15][17] The founder of Renaissance, James Harris Simons, a mathematician, preferred to hire mathematicians, computer scientists, and physicists rather than business school students or financial analysts.[14][18][19] Mercer and a former colleague from IBM, Peter Brown, became co-CEOs of Renaissance when Simons retired in 2009.[15] Renaissance's main fund, Medallion, earned 39% per year on average from 1989 to 2006.[6] A bipartisan Senate panel estimated in 2014 that Medallion investors underpaid their taxes by some $6.8 billion over more than a decade by masking short-term gains as long-term returns.[20][21] As of 2014, Renaissance managed $25 billion in assets.[2] In November 2017, Mercer announced that he would be stepping down from his position at Renaissance Technologies. The decision was taken after the hedge fund faced a backlash over Mercer's political activism.[22]
Mercer appears in the Paradise Papers as a director of eight Bermuda companies, some of which appear to have been used to legally avoid US taxes.[23]
In 2015, The Washington Post called Mercer one of the ten most influential billionaires in politics.[24] Since 2006, Mercer has donated about $34.9 million to Republican political campaigns in the US.[25]
Mercer has given $750,000 to the Club for Growth, $2 million to American Crossroads,[26] and $2.5 million to Freedom Partners Action Fund.[27] In 2010, he financially supported fringe biochemist[28]Art Robinson's unsuccessful efforts to unseat Peter DeFazio in Oregon's 4th congressional district.[29] In the 2013-2014 election cycle, Mercer donated the fourth largest amount of money among individual donors and the second most among Republican donors.[2]
Mercer was the main financial backer of the Jackson Hole Summit, a "shadow" conference (not to be confused with a similarly named Federal Reserve conference) that took place in Wyoming in August 2015 to advocate for the gold standard.[6] He has also supported Doctors for Disaster Preparedness, Fred Kelly Grant (an Idaho activist who encourages legal challenges to environmental laws), a campaign for the death penalty in Nebraska, and funded ads in New York critical of the so-called "ground-zero mosque".[6] According to associates interviewed by Bloomberg, Mercer is concerned with the monetary and banking systems of the United States, which he believes are in danger from government meddling.[6] Mercer is a major source of funds of Breitbart News.[33] He gave at least $10 million to the media outlet, according to Newsweek.[34]
In 2015 Mercer also gave $400,000 to Black Americans for a Better Future, a conservative think tank led by Raynard Jackson.[35] Since 2017 Mercer has donated $87,100 to the same Super PAC.[36]
Mercer was an activist in the campaign for the United Kingdom to end its membership of the European Union, also known as Brexit. Andy Wigmore, communications director of Leave.EU, said that Mercer donated the services of data analytics firm Cambridge AnalyticatoNigel Farage, the head of the United Kingdom Independence Party (UKIP). The firm was able to advise Leave.EU through its ability to harvest data from people's Facebook profiles in order to target them with individualized persuasive messages to vote for Brexit.
It has been reported that Cambridge Analytica also has undisclosed links to Canadian digital firm AggregateIQ, which also played a pivotal role in Dominic Cummings' Vote Leave campaign, where he delivered an estimated one billion individually curated targeted adverts to voters in the lead up to the Brexit referendum, in contravention of established voting rules. Neither Vote Leave nor Leave.EU informed the UK electoral commission of the donation despite the fact that a law demands that all donations valued over £7,500 must be reported. In 2018, the Electoral Commission found the Vote Leave campaign guilty of breaking electoral law.[37]
Mercer was one of the biggest donors in the 2016 U.S. elections, donating $22.5 million to Republican candidates and PACs.[17] Mercer was a major financial supporter of the 2016 presidential campaign of Ted Cruz,[38] contributing $11 million to a super PAC associated with the candidate.[39]
Mercer was a major supporter of Donald Trump's 2016 campaign for president.[8] Mercer and his daughter Rebekah helped to obtain senior roles in the Trump campaign for Steve Bannon and Kellyanne Conway.[31] Rebekah worked with Conway on the Cruz Super-PAC Keep the Promise in the 2016 Republican primaries.[13] Mercer also financed a Super PAC, Make America Number One, which supported Trump's campaign.[31] Nick Patterson, a former colleague of Mercer's said in 2017 that Trump would not have been elected without Mercer's support.[17]
Mercer's family donated an undisclosed amount to the super PAC Protect Ohio Values which was established to support J. D. Vance for his 2022 election to a Senate seat in Ohio.[40] After Mercer support for Parler beginning in 2018, Vance, who founded Narya Capital, allegedly provided advice concerning Parler to Mercer's daughter Bekah.[41][a][b]
Mercer has said that the Civil Rights Act of 1964, the landmark federal statute arising from the civil rights movement of the 1960s, was a major mistake. In 2017, David Magerman, a former Renaissance employee, alleged in a lawsuit that Mercer had said that African Americans were economically better off before the civil rights movement, that white racists no longer existed in the United States, and that the only racists remaining were black racists.[17]
Mercer and his wife Diana Lynne Dean have three daughters:[30] Jennifer ("Jenji"), Rebekah ("Bekah"), and Heather Sue. Rebekah runs the Mercer Family Foundation. The three Mercer daughters formerly owned a bakery called Ruby et Violette.[55]
Mercer plays competitive poker and owns an HO scale model railroad.[6] In 2009, Mercer filed suit against RailDreams Custom Model Railroad Design, alleging that RailDreams overcharged him by $2 million.[56]
Mercer lives at "Owl's Nest" mansion in Head of the Harbor, New York.[57] He has commissioned a series of yachts, all named Sea Owl.[58] The most recent one is 203 feet (62 metres) in length, and has a pirate-themed playroom for Mercer's grandchildren and a chandelier of Venetian glass.
In Florida, Mercer built a large stable and horse riding center. He has acquired one of the country's largest collections of machine guns and historical firearms, including a weapon Arnold Schwarzenegger wielded in The Terminator.[6]
In 2013, Mercer was sued by several members of his household staff, who accused him of docking their wages and failing to pay overtime compensation.[57] The lawsuit was settled, according to a lawyer who represented the staff members.[38]
Mercer's net worth is estimated to be hundreds of millions of dollars, and he is often referred to as a billionaire.[59][60]
^After Vance graduated from law school in 2013, Peter Thiel had employed Vance at Thiel’s venture capital firm Mithril Capital Management LLC and, later, Thiel, Scott Dorsey who was a co-founder of ExactTarget, Google's Eric Schmidt, and the tech entrepreneur Marc Andreessen financially backed with large sums Vance’s Narya Capital which was co-founded by Colin Greenspon and was established on June 19, 2019, in Columbus with headquarters in Cincinnati as part of Vance's campaign to counter "woke capital" but apparently was shut down in April of 2021 by Delaware regulators only one month after Narya Capital's registered agent "Cogency Global" had resigned.[40][42][43][44][45][46][47] As of June 2024, Narya Capital has investments in at least 19 ventures including investments with a real estate assessment software company ValueBase; a farmland-focused real estate investing company AcreTrader; the Longboat Key-based high-growth neutral video platform Rumble through Ethan Fallang who is a partner with Narya Capital Management, LLC, and oversees its audits, accounting and taxes; insurtech Branch; and the aerospace startup True Anomaly with Jonathan Lacoste of "Space.VC".[48][49][50][51]
