The Stars Group's PokerStars brand has revealed that its first tournament series in which players from Portugal, France and Spain could compete against one another exceeded its advertised €5m guarantee, with a total prize pool of more than €6.4m.

Over 40,000 players took part in the 78-event PokerStars Trio Series, launched to celebrate PokerStars becoming the first online operator to offer a shared player pool between the three countries since Portugal joined the union last month.

Held between June 3rd and 13th, the main event surpassed its €500,000 guarantee to reach €615,195, with winner 'Ineed1000ETH' from Spain beating 2,645 other players to take home €71,917.

PokerStars said that its success with the Trio Series followed France and Spain's very own Spring Championship of Online Poker (SCOOP), which surpassed its record-breaking €10m guarantee to reach €11.7m.

Earlier in the year, PokerStars FRESH (France Espania Hold'em) Series for French and Spanish players also exceeded its €5m guarantee, reaching €6.1m.

"We've had great success with our various series in shared liquidity regions and it's brilliant to see the Trio Series carry on this trend," said Severin Rasset, director of product innovation and operations at The Stars Group.

"We believe that this has strengthened our offering in Southern Europe and we will continue to work hard to give our players the best experience in the market. Players benefit from the shared player pool between Portugal, Spain and France in all aspects of the poker offering and we hope that Italian players will benefit from the same great offer soon."

In January, PokerStars became the first operator to enable players from France and Spain to play together online.

The operator noted that the Italian regulator has reiterated its intention to join the shared market with Portugal, France and Spain. The Stars Group intends to seek approval to link Italian players to its existing player pool as soon as it is possible to do so.

Shares in The Stars Group Inc (TSX:TSGI) closed up 4.72 per cent at CAD$51.74 per share in Tornto Thursday, having set a new 52-week high of CAD$51.75 per share during the day's trading.