Wilks Family
$15.0 million
Energy and natural resources
The Wilks family of Texas — brothers Farris and Dan and their spouses, Jo Ann and Staci — earned billions in the fracking boom.
Mercer Family
$11.3 million
Finance
Robert Mercer, a Wall Street hedge fund magnate, and his daughter, Rebekah Mercer.
Toby Neugebauer
$10.0 million
Finance
Co-founder of a private equity firm and son of Representative Randy Neugebauer, Republican of Texas.
Kelcy Warren
$6.0 million
Energy and natural resources
Dallas billionaire and chief executive of an energy company.
Ricketts Family
$5.1 million
Finance
Joe Ricketts founded the online brokerage TD Ameritrade and is the patriarch of the family that owns the Chicago Cubs.
Deason Family
$5.0 million
Technology
Darwin Deason is a Dallas-based billionaire who made his fortune by selling a data processing company to Xerox.
Diane Hendricks
$5.0 million
Real estate and construction
Co-founder of a Wisconsin-based roofing company.
Norman Braman
$5.0 million
Transportation
Billionaire auto dealer in Florida, and a longtime patron of Marco Rubio.
Fernandez Family
$3.1 million
Health
Miguel "Mike" Fernandez built a series of health care services firms and now runs a private equity company.
Ronald M. Cameron
$3.0 million
Food, beverage, agriculture
Chief executive of the agribusiness giant Mountaire.
Larry Ellison
$3.0 million
Technology
Former chief executive of Oracle Corporation.
Richard and Elizabeth Uihlein
$2.7 million
Retail and manufacturing
Owners of a Wisconsin packaging supply company, Mr. Uihlein also is descended from a founder of the Joseph Schlitz Brewing Co.
Benjamin León
$2.5 million
Health
Health care executive and owner of Besilu stables.
Energy and natural resources
Heirs to the late oil billionaire H. L. Hunt.
Jeffrey S. Yass
$2.3 million
Finance
Executive of the Susquehanna International Group, an investment company.
Richard D. and Nancy Kinder
$2.0 million
Energy and natural resources
Mr. Kinder is executive chairman of a Houston pipeline company; Mrs. Kinder is president of the Kinder Foundation
Rooney Family
$2.0 million
Real estate and construction
Family of Francis Rooney, a longtime supporter of the Bush family and owner of Manhattan Construction Group.
Saban Family
$2.0 million
Media and entertainment
The billionaire media investor Haim Saban and his wife, Cheryl, a philanthropist.
McNair Family
$2.0 million
Energy and natural resources
Family of Robert C. McNair, owner of the Houston Texans in the N.F.L.
Ansary Family
$2.0 million
Energy and natural resources
Hushang Ansary, a Houston businessman and former Iranian ambassador to the United States, and his wife, Shahla.
Rees-Jones Family
$2.0 million
Energy and natural resources
The oil billionaire Trevor D. Rees-Jones and his wife, Jan.
Cohen Family
$2.0 million
Finance
The hedge fund billionaire Steven A. Cohen and his wife, Alexandra.
Perlmutter Family
$2.0 million
Media and entertainment
Isaac Perlmutter is chief executive of Marvel Entertainment.
Donald J. Trump
$1.8 million
Real estate and construction
Presidential candidate, second-generation real estate developer and entertainer.
Len Blavatnik
$1.8 million
Finance
A Russian-born American citizen who is the richest man in Britain, according to Forbes.
Perenchio Family
$1.7 million
Media and entertainment
A. Jerrold Perenchio, former chairman of Univision, and his wife, Margaret.
Bernard Marcus
$1.6 million
Retail and manufacturing
Co-founder of Home Depot.
William E. Oberndorf
$1.5 million
Finance
Founding partner of SPO Partners, an investment firm.
Helen Schwab
$1.5 million
Finance
Wife of Charles R. Schwab, the brokerage company founder.
Scott Banister
$1.3 million
Technology
Technology entrepreneur and investor.
Buchwald Wright Family
$1.2 million
Energy and natural resources
Karen Buchwald Wright, chief executive of an Ohio natural gas-compressor manufacturing company, and her husband, Tom Rastin.
Thomas H. Lee
$1.2 million
Finance
Private equity and leveraged-buyout pioneer.
Robert A. Day
$1.1 million
Finance
Grandson of the founder of Superior Oil and a longtime Bush family fund-raiser.
George Macricostas
$1.1 million
Technology
Nevada-based businessman and technology entrepreneur.
Gregory W. Wendt
$1.1 million
Finance
Equity portfolio manager.
Julian Robertson
$1.1 million
Finance
Founder of Tiger Management, a hedge fund.
Charles B. Johnson
$1.0 million
Finance
Financier and part-owner of the San Francisco Giants baseball franchise.
Soros Family
$1.0 million
Finance
Family of George Soros, billionaire philanthropist and hedge fund investor.
Gary Chouest
$1.0 million
Transportation
President of Louisiana shipping company.
James L. Robo
$1.0 million
Energy and natural resources
Mr. Robo gave $2,700; NextEra Energy, where he is chairman and chief executive, made corporate contributions of more than $1 million.
Katzenberg Family
$1.0 million
Media and entertainment
Family of Jeffrey Katzenberg, chief executive of DreamWorks Animation.
Thomas F. Stephenson
$1.0 million
Finance
Silicon Valley venture capitalist.
Paul Fireman
$1.0 million
Finance
Reebok founder and owner of a Nevada ranch.
Johnson Family
$1.0 million
Health
Woody Johnson, owner of the New York Jets, and his mother, Betty.
Al Hoffman Jr.
$1.0 million
Real estate and construction
Retired Florida developer who served as ambassador to Portugal under President George W. Bush.
Brad Freeman
$1.0 million
Finance
Chairman of a California private equity firm.
Abrams-McGrath Family
$1.0 million
Media and entertainment
The film director J.J. Abrams and his wife, Katie McGrath.
Leslie H. Wexner
$1.0 million
Retail and manufacturing
Chairman and chief executive of L Brands (formerly Limited).
Stephen M. Silberstein
$1.0 million
Technology
Co-founder of a company that develops data systems for libraries.
Steven Spielberg
$1.0 million
Media and entertainment
Film director and co-principal of DreamWorks.
Herbert M. Sandler
$1.0 million
Finance
Founder, with his late wife, Marion, of Golden West Financial, the giant California savings and loan bought by the Wachovia Corporation in 2006.
Ronald O. Perelman
$1.0 million
Finance
Billionaire businessman and art collector.
Raul Rodriguez
$1.0 million
Health
Founder of a home medical equipment company.
Louis Moore Bacon
$1.0 million
Finance
Founder of the hedge fund Moore Capital Management.
S. Donald Sussman
$1.0 million
Finance
Founder of Paloma Partners, a hedge fund in Greenwich, Conn.
Jay Schottenstein
$1.0 million
Real estate and construction
President of the real estate company Schottenstein Management.
Christopher Cline
$1.0 million
Energy and natural resources
Billionaire coal mogul.
Finance
The Republican candidate Jeb Bush and family, including two ex-presidents, his father, George, and his brother George W.
Finance
Computer scientist and hedge fund founder.
Willis J. Johnson
$800,000
Transportation
Founder of Copart, a vehicle auction website.
Douglas L. Foshee
$765,400
Energy and natural resources
Chairman and chief executive of Sallyport Investments; former chief executive of El Paso Corp.
Finance
Duke Buchan III, founder of the hedge fund Hunter Global Investors, and his wife, Hannah.
Patricia A. Stryker
$755,300
Health
Heir to medical supply company fortune.
Real estate and construction
Founder of Quicken Loans.
Duchossois Family
$710,600
Finance
The horse racing magnate Richard L. Duchossois and his children.
Finance
Venture capital executives.
Lawrence F. DeGeorge
$600,000
Finance
Financial advisory executive.
Technology
Kenny A. Troutt, founder of a long-distance phone company, and his wife, Lisa.
Finance
Chicago investor and former Goldman Sachs executive.
Finance
Marc Stern is chairman of the TCW Group, a Los Angeles-based asset management firm.
Finance
Family of James H. Simons, founder of the hedge fund Renaissance Technologies.
Finance
Founder of Houston investment firm.
Morton S. Bouchard
$525,000
Transportation
President and chief executive of an oil barge company.
Health
Owners of Jackson Healthcare LLC.
Herschend Family
$513,672
Media and entertainment
Family that owns Herschend Family Entertainment, a theme park operator.
Peter and Julianna Holt
$510,000
Real estate and construction
Principal owners of the N.B.A.'s San Antonio Spurs.
Finance
Doug Leone is partner in the venture capital firm Sequoia Capital.
Finance
Founder of Bridger Management, a hedge fund.
Finance
Hedge fund manager and activist investor.
Food, beverage, agriculture
Chief executive of Silver Eagle Distributors.
Energy and natural resources
Pakistan-born founder of a West Texas energy company.
Howard E. Cox Jr.
$500,000
Finance
Partner at Greylock, a venture capital firm.
Philip H. Geier Jr.
$500,000
Other/unknown
Former chairman and chief executive at the Interpublic Group of Companies.
Insurance
Former chief executive of the insurance broker Willis Group Holdings.
Rex A. Sinquefield
$500,000
Finance
An early pioneer of index funds, now retired and active in Missouri politics.
James A. Rubright
$500,000
Retail and manufacturing
Retired chairman and chief executive of Rock-Tenn Company, a manufacturer of consumer packaging.
John P. McConnell
$500,000
Real estate and construction
Chairman and chief executive of a steel company.
Transportation
Chairman of the cruise operator Carnival Corporation and owner of pro basketball's Miami Heat.
Bruce S. Sherman
$500,000
Finance
Co-founder of Private Capital Management.
Finance
Senior partner at the Silicon Valley venture capital firm Kleiner Perkins Caufield & Byers.
Technology
Co-founder of Compuware.
Robert D. Walter
$500,000
Health
Founder of Cardinal Health.
Other/unknown
A retiree living in Hong Kong -- but public records reveal little else about him.
The Goldman Family
$455,400
Insurance
John D. Goldman, a San Francisco insurance executive, is a son of the late philanthropist Richard N. Goldman.
Finance
Founders of Harbour Group, a St. Louis-based investment firm, and longtime Bush family allies.
R. William Becker
$450,000
Food, beverage, agriculture
Owner of Peace River Citrus Products.
Health
Founder of 5-hour Energy drinks.
Real estate and construction
Family of Itzhak Ezratti, president of G.L. Homes of Florida.
Technology
Heirs to the Motorola fortune.
Other/unknown
Candidate for the Democratic presidential nomination.
Food, beverage, agriculture
Family behind the grocery retailing chain Publix Super Markets.
Finance
Walter W. Buckley, founder of a Bethlehem, Pa., investment management firm, and his wife, Marjorie.
William C. Edwards
$350,000
Finance
Venture capital executive.
Real estate and construction
Family behind Kojaian Management Corp., a real estate investment firm based in Michigan.
Stephen M. Lessing
$315,263
Finance
Partner for Aqueduct Capital Group and former George W. Bush fund-raiser.
Health
Owners of a dental benefits company.
Food, beverage, agriculture
Florida sugar barons, led by four brothers born in Cuba.
Stanley F. Druckenmiller
$313,376
Finance
Investor and hedge fund manager.
Finance
Florida-based founder of a Massachusetts-based private equity firm.
Lee Roy Mitchell
$308,500
Media and entertainment
Chairman of Cinemark, a chain of movie theaters.
Media and entertainment
Media investors.
Kenneth C. Griffin
$305,000
Finance
Hedge fund manager ranked as the richest man in Illinois.
Retail and manufacturing
Heirs to Kohler manufacturing fortune.
John C. Cushman III
$302,700
Real estate and construction
Chairman of Cushman & Wakefield, a commercial real estate firm.
Transportation
Detroit businessman and owner of the Ambassador International Bridge, the only privately-owned border crossing between the U.S. and Canada.
Media and entertainment
President and chairman of the board of the P.G.A. Tour.
Hillary Rodham Clinton
$278,821
Other/unknown
Candidate for the Democratic presidential nomination.
Other/unknown
Washington lawyer and conservative activist.
Media and entertainment
Former professional wrestling executive, who spent close to $100 million on two failed Senate bids in Connecticut.
Finance
Chairman of asset management firm.
Finance
Former Goldman Sachs banker.
Media and entertainment
Children of the late McHenry Tichenor Sr., a media mogul and pioneer of Spanish-language radio.
Finance
Co-founder of a private equity firm that focuses on the oil and gas industry.
Finance
Chief executive of tax services firm.
Abessinio Family
$260,000
Finance
Owners of Roch Capital, a Pennsylvania-based investment firm.
Thomas F. Petway III
$259,700
Insurance
Insurance executive.
Finance
Executive at Kohlberg Kravis Roberts, the New York-based private equity firm.
Energy and natural resources
Oil executive.
Brandon T. Steele
$255,400
Finance
Financial services executive.
Technology
Founder of Falcon Cable.
Real estate and construction
Chairman and chief executive of Epoch Residential, a luxury construction company.
Finance
Arkansas commodity executive.
Energy and natural resources
Head of a petroleum distributor.
Finance
Co-founded an investment firm.
Real estate and construction
The daughter of the late Sol Goldman, a wealthy New York real estate investor, Ms. Goldman has written three books about growing heirloom fruits and vegetables.
Transportation
Beverly Hills car dealer.
Jeffery Hildebrand
$252,700
Energy and natural resources
Founder of oil and natural gas exploration and production company.
Finance
Chairman emeritus of Dodge & Cox.
Jonathon Jacobson
$252,700
Finance
Hedge fund founder.
Kenneth M. Garschina
$252,700
Finance
Founder of a New York hedge fund and longtime backer of Rand Paul.
Finance
Private equity investor.
Finance
Investment banker who served as deputy secretary of Treasury during the Clinton administration.
Robert J. Bishop
$251,500
Finance
Hedge fund founder.
Kenneth G. Langone
$250,000
Finance
A founder of Home Depot and longtime supporter of Chris Christie.
Finance
One of the highest-earning hedge fund founders in the country, specializing in distressed assets.
Energy and natural resources
Auto racing enthusiast and founder of W&T; Offshore, and independent oil and natural gas company.
Richard T. Farmer
$250,000
Retail and manufacturing
Founder of Cintas Corp.
Health
Former chief executive of a mail-order pharmacy company.
Transportation
Owners of Crown Equipment Corp.
Transportation
Founder and chairman of Penske Corp.
Real estate and construction
Owners of Miller & Long Real Estate in Bethesda, Md.
Fred Cunningham II
$250,000
Finance
Investor.
George M. Rapier
$250,000
Health
Chairman and chief executive of WellMed Medical Management.
Finance
Former owners of The Columbus Dispatch.
Real estate and construction
Founder of Performance Contractors.
The Lipsky Family
$250,000
Health
New Jersey hospital owners.
Robert E. Murray
$250,000
Energy and natural resources
Republican activist and chief executive of an Ohio coal mining company.
Technology
Co-founder of PCS Wireless.