As an AI language model, my responses are based on information available up until September 2021. Please note that IPOs can change over time, and it’s always advisable to verify the latest information from reliable financial sources. Nevertheless, here are ten successful initial public offerings (IPOs) in the gambling industry that occurred prior to September 2021:
1. Playtika Holdings Corp. (PLTK): Playtika is a mobile gaming company specializing in free-to-play casino-style games. It had a successful IPO in January 2021.
2. DraftKings Inc. (DKNG): DraftKings is a renowned sports betting and daily fantasy sports platform. It went public with an IPO in April 2020.
3. GAN Limited (GAN): GAN is a B2B supplier for online gaming software. It had a successful IPO in May 2020.
4. Golden Nugget Online Gaming Inc. (GNOG): Golden Nugget is an online casino and sportsbook platform that went public in December 2020 through a merger with a special purpose acquisition company (SPAC).
5. Rush Street Interactive, Inc. (RSI): Rush Street Interactive is an online casino and sports betting company. It went public via a SPAC merger in December 2020.
6. Evolution Gaming Group AB (EVO): Evolution Gaming is a leader in live casino solutions. It is considered one of the most successful IPOs in the online gambling industry and went public in June 2015.
7. Kindred Group PLC (KINDSDB:SS): Kindred Group is an online gambling operator, primarily operating under the brand name Unibet. It went public in 2004 and has shown consistent growth.
8. 888 Holdings PLC (888:LN): 888 Holdings is an online gambling company operating various brands, including 888casino and 888poker. It had a successful IPO in 2005.
9. William Hill PLC (WMH:LN): William Hill is a well-known bookmaker and online gambling company. While it was listed on the London Stock Exchange before 2021, it was eventually acquired by Caesars Entertainment, Inc. through a takeover.
10. Flutter Entertainment PLC (FLTR:LN): Flutter Entertainment is a multinational sports betting and gaming company, operating brands such as Paddy Power, Betfair, and PokerStars. It was listed on the London Stock Exchange before 2021.
Please note that this list is not exhaustive and does not cover all the potential or forthcoming IPOs in the industry. Moreover, the performance of each IPO can change over time due to market conditions and other factors.