What is the name of the race horse that Tony Soprano becomes attached to?

The racehorse that Tony Soprano becomes attached to is named Pie-O-My. Tony becomes emotionally invested in the horse due to its winning streak and also develops a strong bond with it. Pie-O-My represents a source of hope and escape for Tony from his stressful and often violent world of organized crime. Furthermore, Tony connects Pie-O-My to the innocence and purity that seems lacking in his own life, making the horse a symbol of something good and wholesome amidst the darkness surrounding him.