According to the [wiki][1],

> Damage +50%   

> Damage Reduction 50%  

>  Speed +30%

>  Duration 8 seconds

As for whether her abilities can stack with other heroes, I have not been able to test this as I am having problems logging into Battle.Net currently. Will update this answer when I am able to get data.


  [1]: http://overwatch.gamepedia.com/Ana