The Boston Celtics are an American professional basketball team based in Boston, Massachusetts. They play in the Atlantic Division of the Eastern Conference in the National Basketball Association (NBA). Founded in 1946 and one of eight NBA teams (out of 23 total teams) to survive the league's first decade, the team is currently owned by Boston Basketball Partners LLC. The Celtics play their home games at the TD Garden, which they share with the National Hockey League's Boston Bruins. The franchise's seventeen championships are the most for any NBA franchise, and account for 25.4% of all NBA championships since the league's founding in 1946. This makes the Boston Celtics the most successful franchise to date in the major four traditional North American professional sports.