22 U.S. states, plus Washington D.C., offer some form of legalized sports betting, and many of those companies are publicly traded.
Since the U.S. Supreme Court struck down the Professional and Amateur Sports Protection Act in 2018, sports-betting companies have boomed in popularity.
As of the end of August, 22 U.S. states, plus Washington D.C., offer some form of legalized sports betting. Companies in those states are constantly competing for customers by offering in-person sportsbook experiences, betting capability for nearly every sport and mobile wagering.
See also: Twitter unveils 'Super Follows,' allowing people to make money off tweets -- see if you qualify
Many sports-betting operators are also publicly held companies. Some of these companies have non-sports betting aspects of their business, like entertainment and casino operations.
Here is how sports-betting stocks performed in August:
DraftKings
Shares of DraftKings $(DKNG)$ spiked 22.25% in the month of August amid a strong second-quarter earnings report. DraftKings also announced it acquired Golden Nugget Online Gaming in $1.56 billion deal, and held an exclusive Tom Brady NFT release.
In a recent interview with MarketWatch, DraftKings CEO Jason Robins said a strong 2021 for his company can happen regardless of the dangers of the COVID-19 pandemic.
"We couldn't tell how much of that was general momentum with DraftKings and how much of that was people being bored at home," Robins told MarketWatch. "We think it shows we have strong momentum."
Crypto: 'Everything is getting bigger': Naomi Osaka says Dogecoin got her interested in crypto
During its earnings call in August, DraftKings disclosed an investigation by the Securities and Exchange Commission concerning allegations over "black-market gaming" and money laundering made by short seller Hindenburg Research.
Caesars
Shares of Caesars Entertainment Inc. $(CZR)$ jumped 16.33% in August with news it was upgraded to a buy from neutral at BofA Securities.
Caesars also entered betting partnerships with the NFL's Houston Texans and college football's Fiesta Bowl last month.
See also: This fake 'Maderna' vaccine card sees woman facing a year in prison and $5,000 fine in Hawaii
The Wall Street Journal reported that Walt Disney's $(DIS)$ ESPN was exploring deals to license its brand with sports-betting operators Caesars and DraftKings in a agreement worth at least $3 billion. Both sides are still in negotiations, according to the report.
Penn National Gaming
Shares of Penn National Gaming $(PENN)$ were up 18.6% in August.
On Aug. 5, Penn National announced it would acquire theScore from Score Media for about $2 billion in cash and stock.
There have also been recent discussions between Major League Baseball and Penn-owned Barstool Sports to broadcast games. Both sides are still in negotiations, according to The New York Post.
Wynn
Shares of Wynn Resorts Ltd. $(WYNN)$ increased 3.41% in August after news its online gaming organization WynnBet reached an agreement with the NFL to become an approved sports-betting operator for the league.
FOX Bet, BetMGM, PointsBet were also made approved sports-betting operators by the NFL.
"We are pleased to announce this select group as Approved Sportsbook Operators," Nana-Yaw Asamoah, Vice President of Business Development for the NFL, said in a statement "Along with our three Official Sports Betting Partners, this group of operators will help the league to engage fans in responsible and innovative ways this season as the sports-betting landscape continues to evolve."
MGM
Shares of MGM Resorts $(MGM)$ jumped 13.56% in August.
As previously stated, the MGM-operated BetMGM was one of the sports-betting operators that was approved by the NFL for the 2021 season.
On Aug. 6, it was reported that MGM Resorts is selling $17.2 billion worth of land on the Las Vegas Strip to a New York-based firm VICI Properties Inc. $(VICI)$.
The NFL season, which begins in September, is one of the busiest times of the year for U.S. sportsbooks, as no sport has more bets placed on it than football.
The Roundhill Sports Betting & iGaming ETF $(BETZ)$, a tier-weighted index of global sports-betting & iGaming companies, is up 13.87% over the past month, compared to the S&P 500 , which is up 2.98% over that same period.