Saturday, September 26, 2026
  • -
    days
  • -
    hours
  • -
    minutes
  • -
    seconds

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

Jan 19, 2026; Miami Gardens, FL, USA; United States President Donald Trump (left) and Ivanka Trump (right) before the College Football Playoff National Championship game at Hard Rock Stadium. Mandatory Credit: Mark J. Rebilas-Imagn Images

White House Denies Trump Movements Impacted CFP Game

The topic has been widely discussed ahead of Texas-Tennessee.
Nov 7, 2015; New Orleans, LA, USA; The American Athletic Conference logo at Yulman Stadium before the game between the Tulane Green Wave and the Connecticut Huskies. Mandatory Credit: Chuck Cook-USA TODAY Sports

American ‘Not Proactively Seeking’ New Members Despite Overtures

Three schools reportedly have interest in joining the league.
A Bar of Their Own

Women’s Sports Bars: Novelty Has Worn Off, ‘That’s a Good Thing’

They’re leveling up, but sustainability remains the first consideration.
Polymarket logo appears in this illustration taken April 22, 2026.

New York Takes Aim at Polymarket With $4.6B Suit

“Our gambling laws exist to protect New Yorkers.”
podcast thumbnail mobile
Front Office Sports Today

9/25/26 – Trump Skips ‘GameDay,’ Sun Leave Connecticut, Juszczyk’s ‘Juice’ Fine

0:00

Featured Today

Aug 9, 2026; Bedminster, New Jersey, USA; President Donald Trump walks out of the clubhouse during the final round of the LIV Golf New York tournament at Trump National Bedminster.

Trump’s Year of Sports Gets Busier With CFB, Presidents Cup

The impact of Trump’s attendance varies across each sporting event.
Hot & Social/Mets
September 18, 2026

Sports Teams Are Playing a New Role: Matchmaker

The latest promotion at the stadium? Love.
Exclusive
September 18, 2026

Vicious Infighting Is Jeopardizing the Future of Women’s Baseball

The WPBL’s own CEO admits there’s a “power struggle.”
September 17, 2026

Fantasy Football Drafts Are Turning Into Full-Blown Vacations

Leagues are forgoing solo drafts and replacing them with in-person getaways.
Oct 4, 2025; Tempe, AZ, USA; General action during the first period of the game between the Arizona State Sun Devils and the Penn State Nittany Lions at Mullett Arena
September 10, 2026

How Military-Style Workouts in College Sports Get Dangerous

For elite athletes, high-intensity training can be “very appealing.”
First at FOS

Albert Pujols Says He Pursued MLB Ownership

The three-time MVP said his group was outbid for multiple franchises.
September 22, 2026

Why Kerri Walsh Jennings Picked a Side in the Volleyball War

The Olympian co-owns the expansion team NorCal Rumble.
September 24, 2026

Draymond Green on LeBron’s Polymarket Deal: ‘I Think It’s Great’

James announced a partnership with Polymarket earlier this month.
Sponsored

How Ryan Smith Is Building the Future of Sports in Utah

Utah Jazz and Mammoth owner talks from tech to team ownership.
September 21, 2026

Presidents Cup International Team Wants ‘Separation’ From PGA Tour

The U.S. leads the Presidents Cup 13-1-1 all-time.
Kylian Mbappe On
September 18, 2026

Mbappé Leaves Nike for On As Brand Launches Soccer Division

Thierry Henry joins as the company’s new director of football.
Jul 15, 2026; New York, NY, USA; Kevin Hart arrives on the red carpet before the 2026 ESPY Awards at Lincoln Center.
September 17, 2026

LeBron James and Kevin Hart Planning YouTube Golf Collab

Both celebrities recently launched golf content channels.
asset class
September 16, 2026

Ndamukong Suh Says He Almost Invested in the Seahawks

He also “looked at” the Portland Blazers and Thorns.