The Atlanta Thrashers never won the Stanley Cup while they were in Atlanta. They were moved to Winnipeg in 2011 and renamed the Jets.
A group called "Atlanta Spirit" bought the Atlanta Thrashers, Atlanta Hawks, and the rights to Philips Arena in 2003 and the deal was finalized in 2004. AOL Time Warner was the previous owner, but sold the teams and arena to reduce its large debt. Of course, since the above was written, the Atlanta Thrashers have been sold to True North Sports & Entertainment of Winnipeg and have moved from Atlanta to Winnipeg.
They haven't won a Stanley Cup yet. Actually the last time Ottawa won the Stanley Cup was in 1927 and before that it was 1923, with multiple wins before that.
The last Canadian team to win the Stanley Cup was the Montreal Canadians, during the 1992,93 season.
The Ducks went to and won the Stanley Cup in 2007.
To date, they have never won the Stanley Cup.
1927
1992
1927
5
The Blues have never won Lord Stanley's Cup :(
2004
2017