Tuesday, July 21, 2026

Pile of Famous Athletes Quietly Invested in Kalshi Months Ago

Giannis Antetokounmpo was not the company’s first athlete-investor.

D. Ross Cameron-Imagn Images

Giannis Antetokounmpo shook the sports world when he announced in February he was investing in prediction-market platform Kalshi. 

But Kalshi already had famous athlete-investors. 

As part of the company’s December Series E round—which in total raised $1 billion at an $11 billion valuation—Kalshi picked up the following investors: 

  • Two-time WNBA MVP Breanna Stewart
  • WNBPA president Nneka Ogwumike
  • WNBA legend Diana Taurasi
  • Ajay Mitchell of the NBA’s Thunder
  • Jaime Jaquez Jr. of the Heat
  • Former NFL stars Marshawn Lynch and Richard Sherman
  • UCLA standout Gabriela Jaquez (who is expected to be selected in the first round of the WNBA draft next week)

The athletes invested as part of a $4.7 million slice of the total $1 billion investment. Their investment came through Factory Holdings, which bills itself as a “family office platform built for athletes, entertainers, and next-generation wealth creators,” according to a Thursday statement.

Kalshi did not name any of the athlete-investors when it announced the Series E. The round was led by existing Kalshi backer Paradigm and featured participation from other major venture-capital firms like Sequoia and Andreessen Horowitz.

Kyle Kuzma of the Bucks is also a Kalshi investor, and Kevin Durant is invested in the platform through 35V, the venture fund he cofounded with agent Rich Kleiman.

There is no specific policy prohibiting NBA players from endorsing prediction markets, a person familiar with the matter previously told Front Office Sports, although players are not allowed to promote specific NBA-related event contracts.

Thursday’s press release comes as Kalshi is reportedly raising an additional $1 billion at a staggering $22 billion valuation.

Evolving Prediction-Market Ecosystem

Kalshi has stacked up the standout list of athlete-investors as it deals with numerous lawsuits over the legality of sports event contracts. Earlier this week, Kalshi scored a major legal win in one of those cases, with an appeals court ruling New Jersey cannot stop it from offering sports event contracts while its case against state gambling regulators plays out. Experts say the issue will ultimately reach the U.S. Supreme Court. The prediction-market industry has also recently begun to face significant pushback from lawmakers on both sides of the aisle who are concerned about sports event contracts and potential insider trading.

While Kalshi continues grabbing athlete-investors, it has thus far trailed in the sports partnership battle with rival Polymarket. Both are official partners of the NHL, but Polymarket landed MLB and also has agreements with UFC, MLS, and Spanish soccer league LaLiga. Kalshi has deals of its own with Pro Padel League and 6-on-6 soccer association Baller League.

Eagles running back Saquon Barkley is reportedly an investor in Polymarket, although a person familiar with the matter tells FOS that NFL rules prohibit players from investing in, and promoting, sportsbooks and prediction-market platforms. It’s unclear whether the league has taken action over Barkley’s Polymarket stake, and the league has declined to comment.

The war to win prediction-market supremacy has ramped up over the last year, with traditional sports betting giants like DraftKings and FanDuel launching their own platforms and other companies, like Robinhood and Crypto.com, also getting in on the game.

Kalshi currently has a dominant position in the U.S., according to a recent report from Bank of America, which says Kalshi’s market share is more than 90%. The platform has seen weekly trading volume rise from roughly $100 million a year ago to more than $3 billion, “making it one of the fastest growing non-AI companies,” according to Bank of America.

This field is for validation purposes and should be left unchanged.

Sign up for
The Memo Newsletter

Get the biggest stories and best analysis on the business of sports delivered to your inbox twice every weekday and twice on weekends.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.
Linkedin
Whatsapp
Copy Link
Link Copied
Link Copied

What to Read

Dec 29, 2025; Atlanta, Georgia, USA; ESPN MNF broadcaster Ryan Clark shown on set prior to the game between the Los Angeles Rams against the Atlanta Falcons at Mercedes-Benz Stadium. Mandatory Credit: Dale Zanine-Imagn Images

ESPN Layoffs Begin With Ryan Clark

More ESPN layoffs are expected this week.

Why WNBA Union Won’t Monetize Viral Sophie Cunningham Incident  

Cunningham can still use her own NIL to license the image.

Judge Hits Brakes on CBS Sports, TNT Sports Parent Merger

A judge approves a request for a temporary restraining order.
Soccer Football - Serie A - AC Milan v Hellas Verona - San Siro, Milan, Italy - December 28, 2025 Former footballer Zlatan Ibrahimovic before the match REUTERS/Daniele Mascolo

After Breakout World Cup, Zlatan Leaves Fox With Leverage

The former striker said his Fox Sports stint was one-and-done.
podcast thumbnail mobile
Front Office Sports Today

CFB Analyst ⁨Josh Pate⁩ on Michigan Chaos, ESPN, McAfee, the Trump Interview, & More

0:00

Featured Today

Tom's Watch Bar

Sports Bars Are Cashing In From Summer of Soccer

The World Cup has brought a windfall to America’s biggest sports bars.
Jun 16, 2026; East Rutherford, New Jersey, USA; France forward Michael Olise (11) controls the ball against Senegal during a Group I match of the 2026 FIFA World Cup at New York New Jersey Stadium
July 16, 2026

Where World Cup Stars Go to Customize Their Cleats

The world’s best players turn to a Scottish craftsman for perfect cleats.
July 10, 2026

What the World Cup Means to Erling Haaland’s Tiny Hometown

The tournament’s breakout star is from a rural Norwegian town.
July 10, 2026

Why So Many Media Outlets Are Rushing Into Sports

Sports coverage has ballooned in every corner of media.
Pillow Fight Championship
July 8, 2026

How Obscure Sports Get Mainstream TV Deals

For niche sports, getting on TV often matters more than getting paid.
July 13, 2026

NBA Execs Split on Where LeBron James Will End Up

James will play a record 24th NBA season. 
July 14, 2026

DeChambeau Has Last Chance at 2026 Major Cut—With 3D-Printed Irons

LIV Golf’s biggest star continues to stay busy off the course.
Sponsored

Inside the EY 2026 Sports Engagement Index: The Real Map of American Sports Participation

EY’s latest index explores how shifting U.S. fan behaviors are expanding the definition of sports engagement.
Cycling - Tour de France - Stage 9 - Malemort to Ussel - Malemort, France - July 12, 2026 UAE Team Emirates - XRG's Tadej Pogacar wearing the yellow jersey, UAE Team Emirates - XRG's Isaac Del Toro wearing the white jersey and Team Visma | Lease a Bike's Jonas Vingegaard wearing the polka-dot jersey in action as a spectator dressed in a costume cheers on during stage 9
July 13, 2026

Tadej Pogačar Says Heat Demands Tour de France Overhaul

Stage 9 was cut by 18.6 miles under a red alert.
July 12, 2026

Sinner Defeats Zverev at Wimbledon, Claims $4.8M Prize

Sinner won his first Grand Slam tournament of the year.
July 11, 2026

Ohtani, Judge Both Out of MLB All-Star Game

The two superstars will miss the midseason showcase.
July 11, 2026

White Sox Take UCLA’s Roch Cholowsky No. 1 in Draft

The White Sox selected the two-time Big Ten player of the year.